WO1997038487A1 - Dispositif d'actionnement de moteur electrique - Google Patents
Dispositif d'actionnement de moteur electrique Download PDFInfo
- Publication number
- WO1997038487A1 WO1997038487A1 PCT/JP1997/001276 JP9701276W WO9738487A1 WO 1997038487 A1 WO1997038487 A1 WO 1997038487A1 JP 9701276 W JP9701276 W JP 9701276W WO 9738487 A1 WO9738487 A1 WO 9738487A1
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- motor
- driving
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/20—Arrangements for starting
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P8/00—Arrangements for controlling dynamo-electric motors of the kind having motors rotating step by step
- H02P8/02—Arrangements for controlling dynamo-electric motors of the kind having motors rotating step by step specially adapted for single-phase or bi-pole stepper motors, e.g. watch-motors, clock-motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P8/00—Arrangements for controlling dynamo-electric motors of the kind having motors rotating step by step
- H02P8/04—Arrangements for starting
- H02P8/08—Determining position before starting
Definitions
- the present invention relates to a motor drive device that performs high-speed rotation by phase detection control.
- Rotating the motor at high speed and high torque is one of the most important factors in improving the basic performance of the motor, and R & D has been carried out for many years.
- electronic watches which are products that use motors, have become increasingly multifunctional in recent years, and have functions other than the normal time display, such as a stopwatch, an alarm, and dual time. It has been developed and commercialized.
- the system is initialized in the initial state such as when the battery is turned on, or when the mode is changed or the hand position is returned to zero during normal use, it is necessary to perform the fast-forward operation of the hands.
- High-speed rotation of the motor is an important factor from the viewpoint of improvement of operability and so on.
- a flat weight is attached to the motor to use it as a vibration alarm to notify the time using the vibration generated when the motor rotates, or to attach a disk instead of a pointer to the clock motor.
- a high-torque motor was indispensable.
- the motor stops immediately even if the output of the drive pulse is stopped due to the inertia of the motor or the components connected to the motor (for example, in the case of a timepiece, a reduction gear train or hands). It is possible that a situation will not occur. Normally, when trying to obtain a predetermined number of revolutions, the number of pulses corresponding to the number of pulses is output, but in the above case, the output pulse number does not match the number of revolutions of the motor. .
- Fig. 1 is a block diagram of a conventional motor-drive system consisting of a two-pole step motor.
- Figs. 2 to 7 are plan views showing the positional relationship between the magnetic poles of the stay and the rotor.
- a two-pole step motor consists of a driving coil 101, a flat stator 102, and a rotor 103 force as shown in Fig.
- a step 102a is provided as shown in FIG.
- motor drivers 104a and 104b are provided, and by changing the potential of both ends of the drive coil 101, a current is caused to flow through the drive coil 101 and the flat stator 1 0 2 is excited.
- the magnetic pole position of the rotor 103 with respect to the flat stay 102 when no current flows through the drive coil 101 is shown in FIG.
- the flat stator 10 2 of the contactor 103 when a current is applied to the position of the static stable point 110 and the drive coil 101 is excited to excite the flat stay 110 2. Is the position of the electromagnetically stable point 1 1 1 shown in FIG.
- an electronic timepiece outputs a drive pulse signal for changing the potential between both ends of the drive coil 101 during 4 to 5 ms from the motor driver 104 a or 10413 to output the drive coil 1.
- a pulse current is passed through 01, and the row 103 is rotated.
- the rotor 103 rotates while a current is applied to the drive coil 101, and the rotor 103 comes to the magnetic pole position shown in FIG. 4 with respect to the flat stay 102.
- the current flowing through the drive coil 101 stops, but the rotor 103 rotates to the position shown in FIG. 5 due to inertia, and then the rotor 103 stops moving. Damping oscillation occurs around the fixed point 110 and finally stops.
- a drive pulse signal is output from the motor driver 104 a to supply a current to the drive coil 101, and as shown in FIG.
- the rotor 103 rotates 180 degrees in the rotation direction shown in A of FIG.
- a drive pulse signal is output from the motor driver 104b on the opposite side from the last time the drive pulse signal was output. Rotate an additional 18 degrees in direction A.
- the next drive pulse signal is generated before the damping oscillation immediately after the rotor 103 rotates does not stop. Must be output.
- next drive pulse signal is output while the rotor 103 is in a damped oscillation position shown in FIG. 7, that is, the positional relationship between the rotor 103 and the electromagnetically stable point 111 is shown in FIG.
- the mouth 103 rotates in the direction opposite to the direction indicated by A in FIG. 6, that is, in the direction opposite to the normal direction. Therefore, in order to stably rotate the rotor 103, the output interval of the drive pulse signal must be set within the range in which the damped oscillation after the rotation of the rotor 103 does not exceed the electromagnetic stable point 111. It needed to be longer than the time required to stabilize.
- the sum of the pulse width of the drive pulse signal and the stabilization time of the damped oscillation, that is, the output cycle of the drive pulse signal is at least about 1 OmS. This indicates that the current driving method has a limit of about 100 Hz as the output frequency of the driving pulse signal.
- the above problem has been improved by the method described in Japanese Patent Application No. 6-304440 filed earlier by the present applicant.
- FIG. 8 is a circuit diagram showing an example of a drive circuit in a conventional overnight drive device
- FIG. 9 is a waveform diagram showing the operation of the drive circuit in FIG.
- 25 ' is a drive circuit, which is composed of motor drivers 1a and 1b. 2 is a drive coil.
- Reference numeral 41 ′ denotes a back electromotive voltage detection circuit having a bias unit 3 and a voltage detection circuit 5.
- reference numeral 3 denotes a bias means, which comprises switch means 3a and 3b, and a bias resistor having the same resistance value of 3c and 3d.
- Numeral 4 is a flat stage
- 5 is a voltage detection circuit, which is composed of 5a invertor, 5b feedback resistor, and 5c input resistor.
- 6 is an inverter and 103 is a rotor.
- the motor drivers 1 a and 1 b buffer the input signals of 01 in and 02 in, respectively, when the signal 0 El force “H” level, and output the signal 0 E 1 force “L” level. Output to high impedance.
- the switch means 3a and 3b are switches which are turned off when the signal SE output from the inverter 6 is at the "L” level and turned on when the signal SE is at the "H” level.
- the signal OE1 is at the “H” level, and the driving pulse signal of the “H” level is output from the motor driver “la”. The flow then rotates the mouth 103. During this time, the switch means 3a and 3b are both in the OFF state because the signal SE power is at the "L” level.
- the signal () E 1 is at the “L” level, so that the outputs of the motor drivers la and 1 b are in a high impedance state, and the switch means 3 a and 3 Since b is turned on, the X terminal which is one end of the drive coil 2 is divided into the bias voltage Vb which is 1Z2 of the power supply voltage.
- the induced voltage generated from the drive coil 2 becomes dominant immediately after the end of the output of the drive pulse signal, but the influence decreases over time, and Thus, the back electromotive force from the rotor 103 becomes dominant.
- the timing at which the waveform of Aout crosses the bias voltage Vb in the positive to negative direction (time P) is substantially equal to the timing at which the rotor 103 passes through the electromagnetically stable point already described. .
- the rotor 103 sets the magnetic pole position with respect to the flat stay 4 to the electromagnetic stable point. Since it has passed, it continues to rotate in the forward direction without reverse rotation.
- Fig. 10 shows detection of a back electromotive voltage generated from a motor by a detection coil wound coaxially with a drive coil.
- 6a and a comparator 108 that compares the output signal of the differential amplifier 106a with the reference voltage Vb and outputs a signal Aout that is the result of the comparison. Things.
- reference numeral 25 denotes a driving circuit including motor drivers 104 a and 104
- reference numeral 41 denotes a detection coil 105 wound around a stay 102
- a differential circuit a back electromotive voltage detection circuit composed of 106 a and a comparator 108
- 42 is a motor composed of a driving coil 101, a stay 102 and a rotor 103.
- the magnetic pole position of the rotor 103 with respect to the flat stator 102 when the rotor 103 is rotating is determined by the inverse of the rotation generated by the rotation of the rotor 103.
- An electromotive voltage is detected by the voltage detecting means via the detection coil 105, and the output timing of the drive pulse signal is controlled based on the output from the comparator 108.
- Driving of the motor according to the configuration of the conventional example can be performed in the same manner as the method of detecting the back electromotive voltage from the motor using the driving coil 2 in FIG. 8 described above, and the waveform is as shown in FIG. .
- the DC component of the current flowing through the drive coil 101 when the drive pulse is output is removed, so that the voltage waveform appearing at the output of the differential amplifier is a composite waveform of Vg and Vr.
- the back electromotive force is detected by a detection coil 105 wound coaxially with the drive coil 101.
- This method is disclosed in Japanese Patent Application Laid-Open No. No. has already been filed.
- the drive pulse conditions at the time of starting the motor and the drive pulse conditions at a time when the rotation speed is stabilized after a certain time has elapsed after the start are greatly different. Therefore, several types of drive pulse signals to be applied to the drive circuit are prepared in advance, and when the motor is started, a drive pulse signal having a large width is applied to the drive circuit, and the pulse width of the drive pulse signal to be applied is reduced as the rotational speed is improved. It had a configuration to go.
- the driving pulse conditions vary greatly depending on the motor power.
- the rotation axis is in the direction perpendicular to the gravity and the flat weight force ⁇ is required to start rotation against gravity and at the position where rotation starts due to gravity, it is necessary for starting.
- the energy is very different, and as a result, the condition of the drive pulse width output from the drive circuit changes.
- the pulse width at the time of starting was fixed under certain conditions, so that there was a problem that a smooth starting force could not be achieved.
- the pulse width was not enough to start the motor, and the motor could not rotate.
- the pulse width becomes excessive, resulting in an increase in current consumption.
- the driving method that is synchronized with the phase angle of the rotor which is a feature of the conventional driving method, it is necessary to output the next driving pulse signal at the timing when the motor rotates and reaches the opposite phase.
- the pulse width of the drive pulse signal is gradually narrowed at a predetermined time after the motor is started, the motor is not driven when the load on the motor is large or the drive voltage is low. The pulse width will be reduced before the rotation speed is sufficiently improved, which will not only reduce the acceleration performance of the motor, but in some cases may not be able to obtain the energy required for rotation and may cause the motor to stop.
- the drive pulse signal is not sufficiently reduced with respect to the rotation speed, that is, if the drive pulse signal is output with an excessive pulse width, the signal A out output from the voltage detection circuit 5 in FIG. Is as shown in Figure 12.
- the back electromotive voltage generated from the motor shifts to the negative side of the potential of Vb before the influence of the induced voltage occurs.
- the next drive pulse signal to be output is not output.
- the rotation speed does not increase even if the motor stops or does not stop The problem that had occurred.
- An object of the present invention is to solve the above problems and to obtain a reliable startability and stable rotation performance of a motor.
- a rotor having at least two poles of a stay and at least two poles of a permanent magnet, and a drive coil magnetically coupled to the stay.
- a drive pulse generator for outputting a drive pulse signal for driving the step motor, and a drive current supplied to the drive coil based on a signal from the drive pulse generator.
- a voltage detection circuit for detecting a back electromotive voltage generated by the rotation of the rotor; and a magnetic pole for detecting a magnetic pole position of the rotating rotor with respect to the stay based on a detection signal generated in the voltage detection circuit.
- the drive pulse generating means includes an output timing of the drive pulse signal based on a detection signal from the magnetic pole position detection means.
- the magnetic pole position detection means stops outputting the drive pulse signal based on the detection signal from the voltage detection circuit detected during the output period of the drive pulse signal.
- a driving pulse signal having a phase opposite to that of the driving pulse signal is output.
- the magnetic pole position is detected by detecting a back electromotive force generated in a detection coil wound coaxially with the drive coil. It is characterized in that it is performed by detecting in.
- the detection of the magnetic pole position is performed based on a comparison result between a back electromotive voltage detected by the magnetic pole position detecting means and a predetermined potential. It is characterized by.
- a plurality of the predetermined potential force s for detecting the magnetic pole position is set.
- the voltage detection circuit includes: a bias unit configured to bias a potential level at one end of the drive coil to an intermediate potential of a power supply voltage; Voltage to detect the back electromotive voltage generated at the other end of the coil
- the driving pulse generating means outputs a driving pulse signal composed of an intermittent pulse group having a plurality of pauses
- the magnetic pole position detecting means comprises Stopping the drive pulse signal based on a comparison result between the detected signal from the voltage detection circuit and the intermediate potential, and outputting a drive pulse signal having a phase opposite to the stopped drive pulse. I do.
- the magnetic pole position is detected by the back electromotive force detected by the magnetic pole position detecting means crossing a predetermined potential.
- a plurality of the predetermined potentials for detecting the magnetic pole position are set.
- the drive pulse signal composed of the intermittent pulse groups is composed of a plurality of pulse groups having different pulse widths. .
- the driving pulse signal composed of the intermittent pulse group includes a first pulse having a large pulse width and a pulse having a pulse width greater than the first pulse. And a second pulse group having a small width.
- the pulse width of the first pulse changes according to a rotation speed of the rotor.
- the pulse width of the first pulse changes according to the number of drive pulses output from the start of the mouth.
- the pulse width of the second pulse changes according to a rotation speed of the rotor.
- the pulse width of the second pulse changes according to the number of drive pulses output from the start of the rotor. I do.
- the first pulse changes such that the pulse width decreases as the rotational speed force s' of the rotor increases.
- the first pulse changes so that the pulse width decreases with an increase in the number of drive pulse outputs from the start of the rotor. It is characterized by the following.
- the second pulse changes such that the pulse width decreases as the rotation speed of the rotor increases. I do.
- the second pulse changes so that the pulse width decreases with an increase in the number of driving pulse outputs from the start of the rotor. It is characterized by the following.
- the width of the plurality of pause periods of the drive pulse signal composed of the intermittent pulse group is determined according to the rotation speed of the rotor.
- the idle period width changes.
- the width of the plurality of idle periods of the drive pulse signal composed of the intermittent pulse group is a pulse from the start of the rotor. It is characterized in that the idle period width changes according to the number of outputs.
- the width of the idle period changes such that the width decreases as the rotational speed s of the rotor increases.
- the pause period width decreases as the number of drive pulse outputs from the start of the mouth-to-mouth increase increases. It is characterized by changing to.
- the motor drive device generates a timer signal after measuring a predetermined time after outputting the driving pulse and the driving pulse.
- the drive pulse generator The stage stops the output of the start pulse in response to the timer signal output from the timer circuit when the detection signal from the magnetic pole position detecting means is not generated even after a predetermined time has elapsed after the start of the output of the start pulse.
- a driving pulse signal is output in the opposite phase to the starting pulse.
- a step motor including a rotor having at least two poles, a rotor having at least two poles, and a drive coil magnetically coupled to the stay.
- a driving pulse generating means for outputting a driving pulse signal for driving the stepping motor; a driving circuit for supplying a driving current to the driving coil based on a signal from the driving pulse generating means;
- a voltage detecting circuit for detecting a back electromotive voltage generated by the evening rotation; and a magnetic pole position detecting means for detecting a magnetic pole position of the rotating rotor with respect to the stay based on a detection signal generated in the voltage detecting circuit.
- the drive pulse generating means includes: a motor drive device that controls output timing of the drive pulse signal based on a detection signal from the magnetic pole position detection means.
- the drive pulse generating means detects the magnetic pole position even if a predetermined time force s elapses after the start of the output of the drive pulse signal.
- a compensation pulse signal having a polarity opposite to that of the drive pulse signal is output.
- the compensation pulse signal has a pulse width s smaller than the drive pulse signal.
- a braking pulse generating means for outputting a braking pulse signal when stopping the rotation of the stepping motor.
- the braking pulse generating means may be the magnetic pole position detecting means. It is characterized in that the output timing of the braking pulse signal is controlled based on these detection signals.
- the braking pulse signal is output in a direction in which the step is excited to a polarity opposite to the magnetic pole of the rotor.
- the braking pulse signal is output with a pulse width larger than a driving pulse signal for driving the step motor.
- FIG. 1 is a circuit diagram of the drive unit of the conventional motor drive
- Fig. 2 is a plan view showing the static stable point of the 2-pole step motor in Fig. 1
- Fig. 3 is the electromagnetic stable point of the 2-pole step motor in Fig. 1.
- FIG. 4 is a plan view showing the magnetic pole position during rotation of the two-pole step motor in FIG. 1
- FIG. 5 is a plan view showing the rotation direction of the two-pole step motor in FIG. 1
- FIG. FIG. 7 is a plan view showing the rotation direction of the two-pole step motor in FIG. 1
- FIG. 7 is a plan view showing the rotation direction of the two-pole step motor in FIG. 1
- FIG. 8 is a circuit diagram of a drive circuit in a conventional motor drive device
- FIG. 8 is a circuit diagram of a drive circuit in a conventional motor drive device
- FIG. 10 is a circuit diagram of a drive circuit in another conventional motor drive device
- FIG. 11 is a waveform diagram showing the operation of the drive circuit of FIG.
- FIG. 12 shows the operation of the drive circuit of FIG. It is in the form view.
- FIG. 13 is a block diagram showing a first embodiment of the drive system in the motor drive device of the present invention
- FIG. 14 is a waveform diagram showing the operation of the drive system in FIG. 13
- FIG. 15 is a first pulse.
- FIG. 16 is a waveform diagram showing the state of each part of the circuit when the motor did not rotate with the first pulse
- FIG. 18 is a circuit diagram in which a hysteresis comparator is applied to the drive circuit of FIG. 10.
- FIG. 18 is a block diagram showing a second embodiment of the drive system in the motor-drive apparatus of the present invention.
- FIG. Waveform diagram showing the operation of the drive system Fig. 20 is a waveform diagram showing the operation of the drive system in Fig. 18, and
- Fig. 21 is a circuit diagram in which a hysteresis comparator is applied to the drive circuit in Fig. 8, Fig. 22 Is the drive in the motor-drive device of the present invention.
- 23 is a block diagram showing a third embodiment of the drive system, FIG. 23 is a waveform diagram showing the operation of the drive system of FIG. 22, and FIG.
- FIG. 24 is another configuration of the third embodiment shown in FIG. 22.
- FIG. 25 is a waveform diagram showing the operation of the drive system in FIG. 24
- FIG. 26 is a block diagram showing a fourth embodiment of the drive system in the motor drive device of the present invention
- FIG. 26 is a waveform diagram showing the operation of the drive system
- FIG. 28 is a waveform diagram showing the operation of the drive system in FIG. 26
- FIG. 29 is a fifth embodiment of the drive system in the motor drive device of the present invention.
- FIG. 30 is a waveform diagram showing the operation of the drive system of FIG. 29,
- FIG. 31 is a block diagram showing a sixth embodiment of the drive system in the motor drive device of the present invention, and FIG.
- FIG. 33 is a waveform diagram showing the operation of the drive system of FIG. 32
- FIG. 34 is a block diagram showing an eighth embodiment of the drive system in the motor drive device of the present invention
- FIG. FIG. 4 is a waveform chart showing the operation of the drive system of FIG.
- FIG. 13 is a block diagram showing a first embodiment of the drive system in the motor drive device of the present invention
- FIG. 14 is a waveform diagram showing the operation of the drive system of FIG.
- 21 is an oscillation circuit that oscillates the fundamental frequency signal OSC
- 22 is a frequency divider that outputs a signal F div obtained by dividing the fundamental frequency OSC
- 23 is a motor that drives the motor 42
- 24 is a signal 0 1 in or a signal 0 2 in as a driving pulse signal based on the signals 0E and Fd.
- b is the signal A out force detected by the back electromotive voltage detection circuit 41 1 ⁇ Reference potential Vb in the negative direction ( A negative edge detection circuit that outputs a negative edge detection signal NE when the vehicle crosses in the negative direction.
- the reference numeral 31 denotes a 0 R circuit that outputs 0 R of the positive edge detection signal PE and the negative edge detection signal NE.
- I a timer circuit for counting the elapse of a predetermined time from the rise of the drive pulse signal.
- a pulse control circuit 27 outputs a signal Fd for controlling the operation and non-operation of the drive control circuit 24, and a signal Ptrg for controlling the output timing of the signal OE output from the waveform shaping circuit 23.
- the drive circuit 25, the back electromotive voltage detection circuit 41, and the motor 42 have the same configuration as that of FIG.
- Reference numeral 40 denotes a magnetic pole position detection circuit including a positive edge detection circuit 26a, a negative edge detection circuit 26b, an OR circuit 31, and a back electromotive voltage detection circuit 41. The operation will be described below with reference to FIG.
- the positive edge detection circuit 26a is activated when the signal 0E is at the "H" level, and outputs a positive edge detection signal PE when the signal Aout crosses the bias voltage Vb in the positive direction. Further, the negative edge detection circuit 26a Becomes active when the signal OE power is low, and outputs a negative edge detection signal NE when the signal A out crosses the bias voltage Vb in the negative direction during the signal OE power low level. .
- the signal 0E is "L"
- the negative edge detection circuit 26b is in operation.
- the output signal 01in from the drive control circuit 24 is "H”
- the signal Aout which is a signal from the drive circuit 25, has a waveform shown in a period t1 in FIG.
- the negative edge detection circuit 26b When the signal Aout crosses the potential of the bias voltage Vb from the positive to the negative direction during the period t1, the negative edge detection circuit 26b outputs the negative edge detection signal NE.
- the pulse control circuit 27 receives the negative edge detection signal NE via the OR circuit 31, it outputs a signal Ptrg.
- the timer circuit 28 resets the timer operation and stops.
- the waveform shaping circuit 23 sets the signal 0E to the “H” level during the period t2 in FIG. 14 in synchronization with the rise of the signal Ptrg.
- the drive control circuit 24 sets the signal 02 in to the “H” level during the signal 0E force “H”.
- the positive edge detection circuit 26a receives the signal Aout, and detects the positive edge when the level of the signal Aout crosses the bias voltage Vb from the negative direction to the positive direction. Outputs signal PE.
- the pulse control circuit 27 receives the positive edge detection signal PE via the OR circuit 31, it outputs a signal Pt rg. Thereafter, the same operation is repeated, and the rotor 103 keeps rotating.
- a stop signal ES is input to the pulse control circuit 27 from outside.
- the pulse control circuit 27 When receiving the positive edge detection signal PE or the negative edge detection signal NE immediately after the input of the stop signal ES, the pulse control circuit 27 outputs the last Ptrg. In the example shown in FIG. 14, the pulse control circuit 27 receives the negative edge detection signal NE and outputs the signal Ptrg.
- the "H” level is output to the signal 02in during the period t4 in FIG. 14, the positive edge detection circuit 26a is activated, and the signal A out crosses the bias voltage Vb from negative to positive.
- the positive edge detection signal PE is output at the timing.
- the signal control circuit 27 sets the signal Fd to the “H” level and outputs the motor drivers 104 a and 104 b. Is fixed to the same level, and the operation of the circuit ends.
- the relationship between the phase of the drive pulse signal and the magnetic pole position of the rotor 103 does not always match in actual use.
- the motor may continue to rotate due to inertia even after the rotation of the motor is stopped.
- the position of the magnetic pole is uncertain.
- FIG. 13 shows how the system of the present invention operates when the motor does not rotate in the first pulse.
- FIG. 15 is a waveform diagram showing the state of each part of the circuit when the motor does not rotate with the first pulse.
- the signal A out output from the drive circuit 25 becomes the state shown in FIG. 15 or FIG. That is, since the motor is not rotating, almost no back electromotive voltage Vr is generated during normal rotation of the motor, and as a result, the signal A out is induced by the detection coil when the drive pulse signal is output. Only voltage. In this case, after the influence of the induced voltage is eliminated, the potential difference between both ends of the differential amplifier 106a shown in FIG. 10 should be basically 0, but some potential difference actually occurs. Therefore, as a result, the potential of the signal A out becomes higher or lower than the bias voltage V b by a certain force S.
- the signal A out crosses the level of V b in the positive to negative direction even if the drive pulse signal continues to be output Therefore, there is no signal P trg which is the output timing of the next drive pulse signal.
- a driving pulse signal for starting is output and the timer 28 of the timer circuit 28 operates.
- the timer circuit 28 outputs the pseudo detection signal T up when no positive or negative edge detection signal is received from the magnetic pole position detection circuit 40 even after a predetermined time (tl ′ in FIG. 15) has elapsed. And stops one timer operation.
- the pulse control circuit 27 When the pulse control circuit 27 receives the signal TUP, it outputs the signal P trg, and as a result, an “H” level is immediately output to the signal 02 in, that is, the next drive pulse signal has the opposite polarity to the first drive pulse signal. , The rotor 103 rotates. Subsequent operations are performed under the same control as when the motor is rotated by the first pulse described above.
- the waveform of the signal A out will change V b from positive to negative immediately after the influence of the induced voltage has disappeared.
- the signal NE is immediately output from the negative edge detection circuit 26b. Therefore, in response to this, the timer one circuit 28 stops the timer one operation. Further, the pulse control circuit 27 outputs the signal Ptrg, and the subsequent operation is performed by the same control as when the motor is rotated by the first pulse described above.
- the motor can be reliably started regardless of the magnetic pole position of the rotor 103 at the time of starting.
- a voltage detecting means composed of a comparator 108 that compares the output signal of the differential amplifier 106 a with the reference voltage Vb and outputs a signal as a result of the comparison is added.
- a circuit 106 consisting of a differential amplifier 106a, a feedback resistor 106b, and an input resistor 106c, has a differential amplifier 107a and a feedback resistor 107
- a circuit 107 consisting of b and the input resistance 107 c to form a hysteresis comparator, whether the back electromotive force has crossed to detect the magnetic pole position May be provided with hysteresis.
- FIG. 18 shows a second implementation of the system of Fig. 13 described earlier with a slight improvement to enable detection of the back EMF from the motor even while the drive pulse signal is being output.
- FIG. 19 is a block diagram showing an example, and FIGS. 19 and 20 are waveform diagrams showing the operation of FIG. FIG. 20 is enlarged on the time axis as compared with FIG.
- reference numeral 32 denotes a signal T when a predetermined time is measured after the signal 0 E1 becomes "L" and the positive edge detection signal PE or the negative edge detection signal NE is not received within the predetermined time.
- This is a timer circuit B that outputs up ', and a flip-flop circuit 46 inverts the output signal Q every time it receives the signal Tup'.
- Reference numeral 40 ' denotes a magnetic pole position detection circuit including a positive edge detection circuit 26a, a negative edge detection circuit 26b, an OR circuit 31 and a back electromotive voltage detection circuit 41'.
- the waveform shaping circuit 23 intermittently controls the driving pulse signal and outputs a signal 0 E 1 that is a signal for controlling the magnetic pole position detection circuit 40 ′ and the timer circuit B 32 from the pulse control circuit 27. It is output each time the received P trg signal is received.
- the drive control circuit 24 is configured to switch and output the signal 0 1 in and the signal 0 2 in based on the output signal Q from the flip-flop circuit 46. Further, the drive circuit 25 ', the back electromotive voltage detection circuit 4' and the motor 42 'have the same configuration as that of FIG. 8 described in the conventional example above. Other components are the same as those in FIG. 13 and will not be described.
- the driving pulse signal of signal 01 in is output during the signal 0 E1 force “H”, and during the signal 0 E1 force “L”, the motor driver 1 a, 1 in FIG.
- the output of b is set to high impedance and operating the bias means 3, the back electromotive force from the motor is detected.
- the waveform of A out during the period of t1 is the induced voltage Vr generated in the drive coil 2 by the output of the drive pulse signal of the signal 01 in, and the back electromotive voltage V generated by the rotation of the motor. It becomes a composite waveform of g.
- the induced voltage Vr is dominant immediately after the signal 01 in force becomes the same, and when the influence of the induced voltage Vr disappears with time, the back electromotive force Vg force s It will be observed.
- the timer circuit B32 starts the timer operation when the signal 0E becomes 1 "L". Since the output signal Q of the flip-flop circuit 46 is "L", the positive edge detection circuit 26a outputs the signal 0E1 "L”. It is in operation during the period. The positive edge detection circuit 26a outputs the positive edge detection signal PE when observing that the waveform of the signal A out crosses Vb from the negative direction to the positive direction at the point P1 in the period t2 in FIG. . Further, the timer circuit B 32 stops the operation of the timer when the signal PE is received via the OR circuit 31, while the pulse control circuit 27 stops the operation of the timer circuit B for a predetermined time (t 2).
- a Ptrg signal is output after a predetermined time has elapsed.
- the waveform forming circuit 23 Upon receiving the P trg signal, the waveform forming circuit 23 outputs "H" for 0E1 during the tc period, and then detects the back electromotive voltage during the t and 3 periods as in the t2 period.
- the waveform of the signal A out crosses the potential of Vb from negative to positive at points Pl, P2, and P3, respectively, so that P trg is output.
- the "H" signal is output as the signal 0E1.
- the rotor 103 rotates 180 degrees or more, and the waveform of the signal A out changes the potential of Vb. There is no crossing from negative to positive. Therefore, during the period of t5, the positive edge detection signal PE is not output from the positive edge detection circuit 26a during this period.
- the timer one circuit B32 outputs Tup 'when a predetermined time (t5) has elapsed without receiving the positive edge detection signal PE during the period of t5.
- the pulse control circuit 27 When receiving the signal Tup ', the pulse control circuit 27 outputs the signal Ptrg, and as a result, the signal 0E1 is output from the waveform shaping circuit 23.
- the signal Q of the flip-flop 46 is changed from "L” to "H” by the signal Tup ', so that the drive control circuit 24 outputs a drive pulse signal to the signal 02 in side. Subsequent operations are the same as in the first embodiment.
- the drive coil can be used also as the back electromotive voltage detection coil, and the configuration is simplified.
- the interval between the drive pulse signal and the next drive pulse signal can be eliminated, so that the motor can be driven at high speed and stably.
- the drive circuit in FIG. 21 is obtained by adding a hysteresis comparator 13 to the drive circuit in FIG. 8, and the hysteresis comparator 13 is provided downstream of the voltage detection circuit 5.
- the hysteresis comparator 13 includes an input resistance 13a, a feedback resistance 13b, an invar 13c, and an invar 13d. With this configuration, a hysteresis may be provided to the reference potential for determining whether the back electromotive force has crossed in order to detect the magnetic pole position.
- the reference potential By providing a delay in the detection timing of whether or not the pressure is released, it is possible to prevent malfunction due to the influence of an external magnetic field or the like, and furthermore, even if a physical impact is applied to the motor. This is effective for improving the rotation stability of the motor.
- the control method for the pulse output immediately after the start of the motor has been described above.
- a pulse output method until the rotational speed of the motor changes from the acceleration state to the constant speed state after the motor is started will be described. .
- FIG. 22 is a block diagram showing the configuration of the third embodiment, and description of items common to the first and second embodiments will be omitted.
- FIG. 23 is a waveform chart showing the operation of FIG.
- reference numeral 35 denotes a timer circuit C which starts a timer operation in synchronization with the fall of the signal OE1.
- the timer circuit C 35 starts operating when the signal OE 1 is low and outputs a signal Cup after a lapse of a predetermined time, and is reset by the signal Ptr g. 36 is a counter circuit, Counts the Cup signal from the timer circuit C35, switches and outputs the pulse width selection signals Ps1 to PsN 37 is a drive pulse control circuit, and based on the pulse width selection signals Psl to PsN, the signal OE1
- the drive circuit 25 ', the back electromotive voltage detection circuit 41' and the motor 42 'in Fig. 22 have the same configuration as that of Fig. 8 described in the conventional example. The description of the same configuration as that of the second embodiment is omitted.
- the count value of the counter circuit 36 has been cleared, and as a result, the signal Ps 1 has a power of “H.”
- the drive pulse control circuit 37 is output from the power control circuit 36. Change the pulse width of the drive pulse signal output according to the signal P s 1 from the signal P s 1.
- the signal P si 'H' that is, the widest drive pulse signal is output immediately after starting.
- the operation of reducing the pulse width of the drive pulse signal is performed as the signal which subsequently becomes level H changes in the order of the signals Ps2, Ps3,..., PsN.
- the state in which the signal SS is input and the motor starts, that is, the period of (a) in FIG. 23 is the same as that in FIG.
- the timer circuit C 35 is set in advance in a normal state, that is, in a state like the period of FIG. 23A, when the signal OE 1 becomes “L”, the timer starts operation. No signal is output because it is reset by the next signal P trg before the specified time to end the timer operation. However, as shown in the period (c) and (d) in Fig. 23, the signal Aout does not cross Vb even after the time ⁇ t elapses after the signal 0E1 force s falls. If P trg does not come, it is determined that the row driver 103 has already reached the position driven by the next drive pulse signal, and the timer circuit C 35 outputs the “H” level pulse to the signal C up. Output a signal.
- the counter circuit 36 When receiving the signal Cup, the counter circuit 36 counts up the internal counter, and accordingly, sets the signal Ps1 to “L” and sets the signal Ps2 to "H". As a result, the signal ⁇ E 1 is output as a drive pulse signal having a smaller pulse width than the previous time.
- the drive pulse signal is not output at point P in Fig. 23. Although a slight decrease in rotation speed was observed, rotation did not stop immediately. Therefore, if the next drive pulse signal is output at Q point, the rotation itself does not stop. However, if the pulse width of the driving pulse signal output at the point in time Q is the same as the immediately preceding driving pulse signal, the rotation speed once decreased due to the absence of the driving pulse signal output at the point P increases again. However, the situation again occurs as shown at point P in FIG. 23, and as a result, further improvement in the rotation speed cannot be expected.
- the pulse of the next output driving pulse signal The width is reduced. If the rotation speed of the motor increases in this state, the same state as at point P in FIG. 23 also occurs. However, the same control as described above is performed here, and the pulse width of the driving pulse signal is reduced. When the same control is repeated with respect to the pulse width of the drive pulse signal, the rotation speed gradually increases, and finally a stable state is reached in which the rotation speed does not further increase. In this state, the pulse width of the drive pulse signal does not become excessive, and therefore, the point where the waveform of the signal A out crosses the bias voltage Vb can be detected, so that the drive pulse is output reliably and stable rotation can be obtained. .
- the stop of the motor is performed by the signal ES in the same manner as described above.
- the count circuit 36 is reset, and the counter value is initially set to four dogs. Therefore, the next time the motor is driven, the drive pulse signal having the widest width will be output from the signal P s1 force “H”.
- the drive pulse signal having the optimum width is selected according to the rotation speed of the motor, so that the motor can be rapidly accelerated and rotated stably. Speed improvements can be obtained.
- the drive circuit 25 ′, the back electromotive voltage detection circuit 41 ′, and the motor 42 ′ have the circuit configuration described in FIG. Even in this case, the same operation can be obtained.
- FIG. 24 is a block diagram showing another configuration of the third embodiment, and a description of the same configuration as that shown in FIG. 22 will be omitted.
- FIG. 25 is a waveform diagram showing the operation of FIG.
- a compensation pulse generating circuit 38 is newly provided. If the signal P trg does not come after the time At has elapsed after the fall of the signal OE 1 as in the period (d) of FIG. 25, the timer circuit C 35 outputs the signal C u Outputs an H "level pulse signal. Upon receiving this signal CuP, the compensation pulse generating circuit 38 outputs a compensation pulse signal FP.
- This signal FP is input to the drive control circuit 24 as a signal 0 E 1 via the 0 R circuit, and the output signal Q of the flip-flop circuit 46 is switched from “H” to “H” by the signal C up This conclusion As a result, the compensation pulse signal FP is output as a drive pulse signal of the signal 01 in. With this configuration, even if the signal P trg does not arrive, the compensation pulse signal FP is output, so that a temporary speed drop can be suppressed.
- the compensation pulse signal FP output here has a narrower pulse width than a normal drive pulse signal. This means that if the signal FP is wide, at time R in Fig. 25, the signal A out may miss the timing when the potential Vb crosses from the positive to the negative direction, and the compensation pulse signal This is because reducing the FP pulse width can prevent this.
- FIG. 26 is a block diagram showing the configuration of the fourth embodiment, and description of items common to the second embodiment will be omitted.
- FIG. 27 is a waveform diagram illustrating the operation of FIG. 26, and
- FIG. 28 is an enlarged waveform diagram of the signal ⁇ E1.
- This embodiment is a modification of the above-described second embodiment.
- a plurality of drive pulse signals having the same pulse width are output within the period tl.
- the counter electromotive voltage can be detected within the period tl.
- the time during which the drive pulse signal is output is reduced for the time for detecting the back electromotive force, and the rotation for the motor is reduced. This means sacrificing the time to supply the energy (time to output the drive pulse signal). Therefore, this embodiment, that is, the fourth embodiment is effective when faster acceleration and stable rotation of the motor are desired.
- the back electromotive force is not detected and the relative outputs a wider driving pulse signal having pulse width, and the time for supplying the Eneru ghee for rotation relative to the motor (time outputs a drive pulse signal) strength s becomes longer as.
- the present embodiment will be described in detail.
- the waveform shaping circuit 23 includes a large pulse generating circuit 23a and a small pulse generating circuit 23b. Also, the falling of signal OE 1 Thus, the timer circuit B32 is reset and restarted, and outputs a signal Tup 'after a predetermined time has elapsed.
- the pulse control circuit 27 which receives the signal T up 'outputs the signal C trg or the signal P trg, and the pulse control circuit 27 outputs the signal C trg or the signal P trg between the input of the previous signal T up' and the input of the current signal T up '.
- the signal C trg is output, and if it is received, the signal P trg is output.
- the waveform shaping circuit 23 outputs a signal ⁇ E 1 having a relatively wide pulse width when receiving the signal C trg and a signal 0 E 1 having a relatively narrow pulse width when receiving the signal P trg. Is output.
- the signal C trg is also input to the flip-flop circuit 46, whereby the signal 01 in and the signal 02 in are switched.
- the pulse control circuit 27 unconditionally outputs the signal C trg when receiving the signal SS. Also, the timer circuit B32 is reset at the fall of the signal OE1.
- control as shown in FIG. 27 can be performed. Referring to the period t1 in FIG. 27, it can be seen that a drive pulse signal having a relatively wide pulse width is output once at first, and thereafter a drive pulse signal having a relatively narrow pulse width is output. Referring to FIG. 28, as the signal OE1, a signal having a relatively wide pulse width is output once during the period tP1, and the pulse width is relatively narrow during the period tp3 after the lapse of the period tp2. It can be seen that a signal is being output.
- the back electromotive force is not detected, and
- the drive pulse signal with a relatively wide pulse width is output, and the time for supplying the motor with energy for rotation (the time during which the drive pulse signal is output) is increased so that the power of the motor is increased. Faster acceleration and stable rotation are possible.
- FIG. 29 is a block diagram showing the configuration of the fifth embodiment, and description of items common to the fourth embodiment will be omitted.
- FIG. 30 is a waveform diagram showing the operation of FIG.
- This embodiment is a modification of the above-described fourth embodiment.
- a large pulse The pulse width of the signal generated by the generation circuit 23a, the pulse width of the signal generated by the small pulse generation circuit 23b, and the time measured by the timer circuit B32 (t3, t4, t5, etc.) are always constant. there were. If these values are changed according to the rotation speed of the motor, for example, because the length of the period t1 shown in Fig. 27 changes according to the rotation speed of the motor, the speed of the motor will increase. It is possible to obtain high acceleration and stable rotation.
- the pulse width of the signal generated by the large pulse generation circuit 23a, the pulse width of the signal generated by the small pulse generation circuit 23b, and the timer B It is possible to change the time measured at 32.
- a rotation speed detecting circuit 45 is newly provided as shown in FIG.
- the rotation speed detection circuit 45 obtains the generation interval of the signal C trg from the pulse control circuit 27 using the signal from the frequency division circuit 22 as a reference clock, and obtains the rotation speed of the motor from the generation interval of the signal C rg.
- the signal P se 1 is switched from “L” to “H.”
- This signal P se 1 is generated by the large pulse generating circuit 23 a and the small pulse generating circuit. Input to 23b and timer circuit B32.
- the large pulse generating circuit 23a when the signal Pse 1 is switched from “L” to “H”, a signal having a pulse width smaller than the pulse width of the signal that has been generated until now is output.
- the pulse generation circuit 23b when the signal Pse1 switches from “L” to “H”, a signal having a pulse width smaller than the pulse width of the signal that has been generated until now is output.
- the time measured so far time for detecting the back electromotive voltage
- the time measured by the timer circuit B32 (the time for detecting the back electromotive voltage) is shortened, so that the time for detecting the back electromotive voltage is reduced.
- the ratio of the time during which the driving pulse signal is output can be set within a predetermined range, so that more rapid acceleration and stable rotation of the motor can be achieved.
- the time measured by the timer circuit B32 (the back electromotive voltage) The time required for detection of) can be shortened.
- FIG. 31 is a block diagram showing the configuration of the sixth embodiment, and description of items common to the fifth embodiment will be omitted.
- This embodiment is a modification of the fifth embodiment.
- a rotation speed detection circuit 45 is provided to change the pulse width and the like of the signal generated by the large pulse generation circuit 23a and the like. The pulse width and the like of the signal generated by the large pulse generation circuit 23a are changed.
- the rotation speed of the motor is estimated by counting the number of signals C trg generated after the motor starts rotating. That is, since the motor rotation speed increases in accordance with the number of generated signals C trg immediately after the start of the motor, the motor rotation speed is estimated from the count number of the signal C trg. .
- the counter circuit B 47 counts the number of signals C trg from the pulse control circuit 27 and, when this count number becomes a predetermined value or more, changes the signal P se 1 from “L” to “H”. Switch to This signal Psel is input to the large pulse generation circuit 23a, the small pulse generation circuit 23b, and the timer circuit B32. When the stop signal ES is input to the power counter circuit B47, the power count value of the counter circuit B47 is reset. Other operations are the same as in the fifth embodiment. Therefore, the description is omitted.
- the same effect as in the fifth embodiment can be obtained by simply estimating the rotation speed of the motor by the number of counts of the signal Ctrg, and detecting the rotation speed of the motor.
- the circuit can be simplified because no circuit is required.
- FIG. 32 is a block diagram showing the configuration of the seventh embodiment, and description of items common to the fourth embodiment will be omitted.
- FIG. 33 is a waveform chart showing the operation of FIG.
- the pulse control circuit 27 outputs the signal C trg or the signal P trg only when receiving the signal Tup 'from the timer circuit B 32.
- the control circuit 27 outputs the signal P trg as soon as it receives the signal PE or NE from the magnetic pole position detecting circuit 40 ', and the timer circuit B without receiving the magnetic pole position detecting circuit 40' signal PE or NE. It is configured to output a signal C trg when receiving a signal T up ′ from the P. 32.
- the signals PE and NE from the magnetic pole position detection circuit 40 ' are input to the timer one circuit B32, and the timer one is reset.
- the other operations are the same as those in the fourth embodiment, and the description is omitted.
- the time for detecting the back electromotive voltage can be further shortened, and more rapid acceleration and stable rotation of the motor can be achieved. Become.
- FIG. 34 is a block diagram showing the configuration of the eighth embodiment, and description of items common to the second embodiment will be omitted.
- FIG. 35 is a waveform chart showing the operation of FIG.
- This embodiment is an embodiment relating to the braking control when the motor is stopped, and includes a braking pulse generating circuit 50 in addition to the configuration of the second embodiment shown in FIG.
- the pulse control circuit 27 normally outputs a signal Ptrg when receiving the signal Tup '. When receiving the signal Tup', it outputs a signal Etrg when receiving the signal Tup '.
- the braking pulse generating circuit 50 changes the signal Ep to "H" when receiving the signal Etrg. To output.
- This signal Ep is input to the drive control circuit 24 as the signal 0E1 via the OR circuit. Further, the signal Ep is directly input to the drive control circuit 24, and is used for determining whether to output the signal in1 in or the signal 22 in.
- the pulse control circuit 27 receives the signal Tup 'at the point Q, and outputs the signal Etrg. After the time point Q, the output signal Q of the flip-flop circuit 46 is “L”. At this time, since the signal Ep is “H”, the braking pulse signal P SE is output as 02 in.
- the motor can be stopped more quickly at a desired position.
- the present invention it is possible to obtain a more secure startability of the motor 1 according to the first or second embodiment, and to obtain faster acceleration and stable rotation performance according to the third embodiment.
- the first, second and third embodiments have been described separately, a higher-performance motor drive circuit can be realized by using each embodiment in combination.
- high-speed and high-torque rotation driving of the motor can be realized with a simple system configuration without changing the structure of the conventional flat two-pole motor.
- the present invention is applicable not only to electronic timepieces but also to any electronic device using a motor.
- it has high utility value in electronic devices that require miniaturization, and has significant effects such as miniaturization of motor drive devices and low current consumption.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Stepping Motors (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97915716A EP0833438B1 (en) | 1996-04-11 | 1997-04-11 | Motor driving device |
DE69719656T DE69719656T2 (de) | 1996-04-11 | 1997-04-11 | Antriebsvorrichtung für einen motor |
US08/981,033 US5973469A (en) | 1996-04-11 | 1997-04-11 | Motor driving apparatus |
JP53607697A JP3808510B2 (ja) | 1996-04-11 | 1997-04-11 | モーター駆動装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8918896 | 1996-04-11 | ||
JP8/89188 | 1996-04-11 | ||
JP8/98280 | 1996-04-19 | ||
JP9828096 | 1996-04-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997038487A1 true WO1997038487A1 (fr) | 1997-10-16 |
Family
ID=26430622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/001276 WO1997038487A1 (fr) | 1996-04-11 | 1997-04-11 | Dispositif d'actionnement de moteur electrique |
Country Status (5)
Country | Link |
---|---|
US (1) | US5973469A (ja) |
EP (2) | EP0833438B1 (ja) |
JP (1) | JP3808510B2 (ja) |
DE (2) | DE69719656T2 (ja) |
WO (1) | WO1997038487A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007094076A (ja) * | 2005-09-29 | 2007-04-12 | Seiko Instruments Inc | 2相ステップモータの回転検出装置、レンズ駆動装置及び電子機器 |
JP2008295246A (ja) * | 2007-05-28 | 2008-12-04 | Norio Miyauchi | ステップモータの駆動方法と、その駆動回路と、それを適用した振動モータとファンモータ |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2795886B1 (fr) * | 1999-06-29 | 2001-10-05 | Sonceboz Sa | Methode de calage d'un moteur electrique de type polyphase a fonctionnement pas a pas, ceci par rapport a une position de reference correspondant a une butee mecanique |
WO2001045247A1 (en) * | 1999-12-14 | 2001-06-21 | The Penn State Research Foundation | Detection of rotor angle in a permanent magnet synchronous motor at zero speed |
US6979972B2 (en) * | 2003-12-30 | 2005-12-27 | Xerox Corporation | Method and apparatus for detecting a stalled stepper motor |
US8125174B2 (en) | 2006-08-07 | 2012-02-28 | Norio Miyauchi | Motor driven electronic apparatus |
US7453230B1 (en) * | 2006-09-29 | 2008-11-18 | Cypress Semiconductor Corp. | Synchronization circuit and method of performing synchronization |
JP5715759B2 (ja) * | 2010-01-28 | 2015-05-13 | セミコンダクター・コンポーネンツ・インダストリーズ・リミテッド・ライアビリティ・カンパニー | リニア振動モータの駆動制御回路 |
JP6308788B2 (ja) * | 2013-03-27 | 2018-04-11 | セイコーインスツル株式会社 | 電子機器及び衝撃検出方法 |
JP6287997B2 (ja) * | 2015-08-06 | 2018-03-07 | カシオ計算機株式会社 | モータ駆動装置および電子時計 |
JP6772500B2 (ja) * | 2016-03-22 | 2020-10-21 | カシオ計算機株式会社 | 回転検出装置および電子時計 |
JP7052193B2 (ja) | 2016-09-26 | 2022-04-12 | カシオ計算機株式会社 | ステッピングモータ、回転検出装置、および電子時計 |
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JPS53132721A (en) * | 1977-04-25 | 1978-11-18 | Nichiden Kikai Kk | Selrrexcitation type driving circuit for pulse motor |
JPH02159999A (ja) * | 1988-12-14 | 1990-06-20 | Casio Comput Co Ltd | ステップモータ駆動回路 |
JPH05130800A (ja) * | 1991-10-31 | 1993-05-25 | Kyocera Corp | ステツピングモータのdc駆動制御方式 |
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FR2461399A1 (fr) * | 1979-07-09 | 1981-01-30 | Suisse Horlogerie | Detecteur de position d'un moteur pas a pas |
JPS56132196A (en) * | 1980-03-19 | 1981-10-16 | Seiko Epson Corp | Driving system for stepping motor |
CH648723GA3 (ja) * | 1982-09-10 | 1985-04-15 | ||
GB8528541D0 (en) * | 1985-11-20 | 1985-12-24 | Devon County Council | Fm demodulator |
JP2547061B2 (ja) * | 1988-03-15 | 1996-10-23 | 日本電産株式会社 | 直流ブラシレスモータの起動回転制御方法 |
WO1993019404A1 (en) * | 1992-03-18 | 1993-09-30 | Citizen Watch Co., Ltd. | Electronic machine with vibratory alarm |
US5604412A (en) * | 1993-03-19 | 1997-02-18 | Nidec Corporation | Brushless motor and a control circuit thereof |
WO1996018237A1 (fr) * | 1994-12-08 | 1996-06-13 | Citizen Watch Co., Ltd. | Dispositif de commande d'un moteur |
US5627444A (en) * | 1995-05-30 | 1997-05-06 | General Motors Corporation | Switched reluctance motor control |
KR100238026B1 (ko) * | 1997-02-06 | 2000-01-15 | 윤종용 | 센서리스 브러쉬리스 직류모터 |
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1997
- 1997-04-11 US US08/981,033 patent/US5973469A/en not_active Expired - Lifetime
- 1997-04-11 DE DE69719656T patent/DE69719656T2/de not_active Expired - Lifetime
- 1997-04-11 DE DE69735447T patent/DE69735447T2/de not_active Expired - Lifetime
- 1997-04-11 EP EP97915716A patent/EP0833438B1/en not_active Expired - Lifetime
- 1997-04-11 WO PCT/JP1997/001276 patent/WO1997038487A1/ja active IP Right Grant
- 1997-04-11 JP JP53607697A patent/JP3808510B2/ja not_active Expired - Lifetime
- 1997-04-11 EP EP00123475A patent/EP1083653B1/en not_active Expired - Lifetime
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JPS53132721A (en) * | 1977-04-25 | 1978-11-18 | Nichiden Kikai Kk | Selrrexcitation type driving circuit for pulse motor |
JPH02159999A (ja) * | 1988-12-14 | 1990-06-20 | Casio Comput Co Ltd | ステップモータ駆動回路 |
JPH05130800A (ja) * | 1991-10-31 | 1993-05-25 | Kyocera Corp | ステツピングモータのdc駆動制御方式 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007094076A (ja) * | 2005-09-29 | 2007-04-12 | Seiko Instruments Inc | 2相ステップモータの回転検出装置、レンズ駆動装置及び電子機器 |
JP2008295246A (ja) * | 2007-05-28 | 2008-12-04 | Norio Miyauchi | ステップモータの駆動方法と、その駆動回路と、それを適用した振動モータとファンモータ |
JP4565514B2 (ja) * | 2007-05-28 | 2010-10-20 | 則雄 宮内 | ステップモータの駆動方法と、その駆動回路と、それを適用した振動モータとファンモータ |
Also Published As
Publication number | Publication date |
---|---|
US5973469A (en) | 1999-10-26 |
EP0833438A4 (en) | 1998-11-25 |
DE69735447T2 (de) | 2006-11-30 |
JP3808510B2 (ja) | 2006-08-16 |
EP0833438B1 (en) | 2003-03-12 |
DE69719656T2 (de) | 2003-12-18 |
EP0833438A1 (en) | 1998-04-01 |
EP1083653B1 (en) | 2006-03-15 |
EP1083653A3 (en) | 2001-03-21 |
EP1083653A2 (en) | 2001-03-14 |
DE69719656D1 (de) | 2003-04-17 |
DE69735447D1 (de) | 2006-05-11 |
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