CA2605891A1 - Controller for a motor and a method of controlling the motor - Google Patents

Controller for a motor and a method of controlling the motor Download PDF

Info

Publication number
CA2605891A1
CA2605891A1 CA002605891A CA2605891A CA2605891A1 CA 2605891 A1 CA2605891 A1 CA 2605891A1 CA 002605891 A CA002605891 A CA 002605891A CA 2605891 A CA2605891 A CA 2605891A CA 2605891 A1 CA2605891 A1 CA 2605891A1
Authority
CA
Canada
Prior art keywords
motor
pump
pumping apparatus
fluid
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002605891A
Other languages
French (fr)
Other versions
CA2605891C (en
Inventor
Ronald P. Bartos
Brian Thomas Branecky
Howard Richardson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Regal Beloit America Inc
Original Assignee
AO Smith Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AO Smith Corp filed Critical AO Smith Corp
Publication of CA2605891A1 publication Critical patent/CA2605891A1/en
Application granted granted Critical
Publication of CA2605891C publication Critical patent/CA2605891C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0055—Rotors with adjustable blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
    • F04D15/0236—Lack of liquid level being detected by analysing the parameters of the electric drive, e.g. current or power consumption

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Abstract

A pumping apparatus for a jetted-fluid system includes a pump having an inle t connectable to the drain, and an outlet connectable to the return. The pump is adapted to recei ve the fluid from the drain and jet fluid through the return. The pumping apparatus includes a mot or coupled to the pump to operate the pump, a sensor connectable to the power source and configured to generate a signal having a relation to a parameter of the motor, and a switch coupled to the motor and configured to control at least a characteristic of the motor. The pumping apparatus also includes a microcontroller coupled to the sensor and the switch. The microcontroller is configured to generate a derivative value based on the signal, and to control the motor based on the derivative value.

Claims (36)

1. A pumping apparatus for a jetted-fluid system comprising a vessel for holding a fluid, a drain, and a return, the pumping apparatus being connectable to a power source and comprising:
a pump including an inlet connectable to the drain, and an outlet connectable to the return, the pump adapted to receive the fluid from the drain and jet fluid through the return;
a motor coupled to the pump to operate the pump;
a sensor connectable to the power source and configured to generate a signal having a relation to a parameter of the motor;
a switch coupled to the motor and configured to control at least a characteristic of the motor; and a microcontroller coupled to the sensor and the switch, the microcontroller configured to generate a derivative value based on the signal, and to control the motor based on the derivative value.
2. The pumping apparatus of claim 1, wherein the microcontroller is configured to calculate a value indicative of the parameter, and to generate the derivative value based on the value.
3. The pumping apparatus of claim 1, wherein the sensor includes a voltage sensor configured to generate a first signal having a relation to a voltage applied to the motor, and a current sensor configured to generate a second signal having a relation to a current applied to the motor, and wherein the microcontroller is configured to generate the derivative value based on the first signal and the second signal.
4. The pumping apparatus of claim 1, wherein the sensor includes a voltage sensor and a current sensor, the parameter includes a motor input power, and the derivative value includes a derivative value of the motor input power.
5. The pumping apparatus of claim 4 wherein the microcontroller is configured to determine the motor input power based on signals from the voltage and current sensors, and to determine the derivative value based on the motor input power.
6. The pumping apparatus of claim 1, wherein the parameter includes a motor torque, and the derivative value includes a derivative value of the motor torque.
7. The pumping apparatus of claim 1, wherein the parameter includes a motor power factor, and the derivative value includes a derivative value of the motor power factor.
8. The pumping apparatus of claim 1, wherein the microcontroller is further configured to monitor the derivative value, determine whether the monitored derivative value indicates an undesired flow of fluid through the pump, and control the motor to cease operation of the pump when the determination indicates an undesired flow of fluid through the pump and zero or more other conditions exist.
9. A pumping apparatus for a jetted-fluid system comprising a vessel for holding a fluid, a drain, and a return, the pumping apparatus being connectable to a power source and comprising:
a pump including an inlet connectable to the drain, and an outlet connectable to the return, the pump adapted to receive the fluid from the drain and jet fluid through the return;
a motor coupled to the pump to operate the pump;
a sensor coupled to the motor and configured to generate a signal having a relation to a power of the motor;
a switch coupled to the motor and configured to control at least a characteristic of the motor; and a microcontroller coupled to the sensor and the relay circuit, the microcontroller configured to generate a derivative value of a parameter based on the signal, and to control the motor based on the derivative value.
10. The pumping apparatus of claim 9, wherein the microcontroller is configured to calculate a value indicative of the parameter, and to generate the derivative value based on the value.
11. The pumping apparatus of claim 9, wherein the sensor includes a voltage sensor configured to generate a first signal having a relation to a voltage applied to the motor, and a current sensor configured to generate a second signal having a relation to a current applied to the motor, and wherein the microcontroller is configured to generate the derivative value based on the first signal and the second signal.
12. The pumping apparatus of claim 9, wherein the sensor includes a voltage sensor and a current sensor, the parameter includes a motor input power, and the derivative value includes a derivative value of the motor input power.
13. The pumping apparatus of claim 12 wherein the microcontroller is configured to determine the motor input power based on signals from the voltage and current sensors, and to determine the derivative value based on the motor input power.
14. The pumping apparatus of claim 9, wherein the microcontroller is further configured to monitor the derivative value, determine whether the monitored derivative value indicates an undesired flow of fluid through the pump, and control the motor to cease operation of the pump when the determination indicates an undesired flow of fluid through the pump and zero or more other conditions exist.
15. A method of controlling a motor operating a pumping apparatus of a fluid-pumping application, the pumping apparatus comprising a pump having an inlet to receive a fluid and an outlet to exhaust the fluid, and the motor coupled to the pump to operate the pump, the method comprising:
sensing a motor current;
sensing a motor voltage;
obtaining a derivative value of the motor power based on the sensed voltage and the sensed current;
determining whether the derivative value indicates a condition of the pump;
and controlling the motor to operate the pump based on the condition of the pump.
16. The method of claim 15, further comprising obtaining a power value of the motor power based on the sensed voltage and the sensed current.
17. The method of claim 15, wherein the condition of the pump is an undesired flow of fluid through the pump.
18. The method of claim 15, wherein the pumping apparatus further comprises a voltage sensor and a current sensor, wherein sensing a motor voltage comprises sensing a voltage applied to the motor with the voltage sensor, and wherein sensing a motor current comprises sensing a current through the motor with the current sensor.
19. A pumping apparatus for a jetted-fluid system comprising a vessel for holding a fluid, a drain, and a return, the pumping apparatus being connectable to a power source and comprising:
a pump including an inlet connectable to the drain, and an outlet connectable to the return, the pump adapted to receive the fluid from the drain and jet fluid through the return;
a motor coupled to the pump to operate the pump;
a sensor connectable to the power source and configured to generate a signal having a relation to a parameter of the motor;
a switch coupled to the motor and configured to control at least a characteristic of the motor; and a derivative device coupled to the sensor and the switch, the derivative device configured to generate a derivative value based on the signal to control the motor based on the derivative value.
20. The pumping apparatus of claim 20, wherein the derivative device includes an operational amplifier circuit.
21. The pumping apparatus of claim 20, wherein the sensor includes a voltage sensor configured to generate a first signal having a relation to a voltage applied to the motor, and a current sensor configured to generate a second signal having a relation to a current applied to the motor, and wherein the derivative device is configured to generate the derivative value based on the first signal and the second signal.
22. The pumping apparatus of claim 20, wherein the sensor includes a voltage sensor and a current sensor, the parameter includes a motor input power, and the derivative value includes a derivative value of the motor input power.
23. The pumping apparatus of claim 20, wherein the parameter includes a motor torque, and the derivative value includes a derivative value of the motor torque.
24. The pumping apparatus of claim 20, wherein the parameter includes a motor power factor, and the derivative value includes a derivative value of the motor power factor.
25. A pumping apparatus for a jetted-fluid system comprising a vessel for holding a fluid, a drain, and a return, the pumping apparatus being connectable to a power source and comprising:
a pump comprising an inlet connectable to the drain, and an outlet connectable to the return, the pump adapted to receive the fluid from the drain and jet fluid through the return;
a motor coupled to the pump to operate the pump;
a sensor configured to generate a signal having a relation to a parameter of the motor;
a switch coupled to the motor and configured to control a characteristic of the motor; and a microcontroller coupled to the sensor and the switch, the microcontroller configured to generate a value based on the signal, the value having a relation to the motor torque, and to control the motor based on the value.
26. The pumping apparatus of claim 25, wherein the sensor is connectable to the power source.
27. The pumping apparatus of claim 25, wherein the sensor is coupled to the motor.
28. The pumping apparatus of claim 25, wherein the sensor includes a current sensor configured to generate a signal related to the current of the motor.
29. The pumping apparatus of claim 26, and further comprising a second sensor configured to generate a signal indicative of the speed of the motor.
30. The pumping apparatus of claim 26, wherein the microcontroller is further configured to determine the speed of the motor, and wherein the value has a further relation to the speed of the motor.
31. The pumping apparatus of claim 27, wherein the microcontroller is further configured to determine a relationship between the speed of the motor and the signal related to the current of the motor to calculate the value.
32. The pumping apparatus of claim 25, wherein the microcontroller is further configured to monitor the value, determine whether the monitored value indicates an undesired flow of fluid through the pump, and control the motor to cease operation of the pump when the determination indicates an undesired flow of fluid through the pump and zero or more other conditions exist.
33. A method of controlling a motor operating a pumping apparatus of a jetted fluid system comprising a vessel for holding a fluid, a drain, and a return, the pumping apparatus comprising a pump having an inlet connectable to the drain, and an outlet connectable to the return, the pump adapted to receive the fluid from the drain and jet fluid through the return, and the motor coupled to. the pump to operate the pump, the method comprising:
controlling the motor to operate the pump;
sensing a current of the motor;
calculating a torque of the motor based on the sensed current;
determining whether the torque indicates a condition of the pump; and further controlling the motor to operate the pump based on the condition of the pump.
34. The method of claim 33, wherein monitoring the operation of the pump further comprises sensing a voltage applied to the motor;
determining a speed value related to the motor; and wherein the calculating a torque is further based on the speed value.
35. The method of claim 33, further comprising sensing a speed of the motor; and wherein the calculating a torque is further based on the sensed speed.
36. The method of claim 33, further comprising calculating a value indicative of input power to the motor; and determining a linear relationship between the torque and the input power to the motor.
CA2605891A 2006-10-13 2007-10-05 Controller for a motor and a method of controlling the motor Active CA2605891C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/549,499 2006-10-13
US11/549,499 US20080095639A1 (en) 2006-10-13 2006-10-13 Controller for a motor and a method of controlling the motor

Publications (2)

Publication Number Publication Date
CA2605891A1 true CA2605891A1 (en) 2008-04-13
CA2605891C CA2605891C (en) 2015-04-14

Family

ID=39032383

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2605891A Active CA2605891C (en) 2006-10-13 2007-10-05 Controller for a motor and a method of controlling the motor

Country Status (5)

Country Link
US (2) US20080095639A1 (en)
EP (1) EP1914427B8 (en)
CA (1) CA2605891C (en)
DE (1) DE602007013339D1 (en)
ES (1) ES2363808T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113202812A (en) * 2021-05-31 2021-08-03 陈功强 Water pump of automobile engine

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8540493B2 (en) 2003-12-08 2013-09-24 Sta-Rite Industries, Llc Pump control system and method
US20110002792A1 (en) * 2004-04-09 2011-01-06 Bartos Ronald P Controller for a motor and a method of controlling the motor
US8177520B2 (en) * 2004-04-09 2012-05-15 Regal Beloit Epc Inc. Controller for a motor and a method of controlling the motor
US20080095639A1 (en) * 2006-10-13 2008-04-24 A.O. Smith Corporation Controller for a motor and a method of controlling the motor
US8133034B2 (en) 2004-04-09 2012-03-13 Regal Beloit Epc Inc. Controller for a motor and a method of controlling the motor
US7854597B2 (en) 2004-08-26 2010-12-21 Pentair Water Pool And Spa, Inc. Pumping system with two way communication
US7686589B2 (en) 2004-08-26 2010-03-30 Pentair Water Pool And Spa, Inc. Pumping system with power optimization
US7874808B2 (en) 2004-08-26 2011-01-25 Pentair Water Pool And Spa, Inc. Variable speed pumping system and method
US8602745B2 (en) 2004-08-26 2013-12-10 Pentair Water Pool And Spa, Inc. Anti-entrapment and anti-dead head function
US7845913B2 (en) 2004-08-26 2010-12-07 Pentair Water Pool And Spa, Inc. Flow control
US8480373B2 (en) 2004-08-26 2013-07-09 Pentair Water Pool And Spa, Inc. Filter loading
US8019479B2 (en) 2004-08-26 2011-09-13 Pentair Water Pool And Spa, Inc. Control algorithm of variable speed pumping system
US8469675B2 (en) 2004-08-26 2013-06-25 Pentair Water Pool And Spa, Inc. Priming protection
US8281425B2 (en) 2004-11-01 2012-10-09 Cohen Joseph D Load sensor safety vacuum release system
US20080095638A1 (en) * 2006-10-13 2008-04-24 A.O. Smith Corporation Controller for a motor and a method of controlling the motor
US7690897B2 (en) * 2006-10-13 2010-04-06 A.O. Smith Corporation Controller for a motor and a method of controlling the motor
US8104110B2 (en) * 2007-01-12 2012-01-31 Gecko Alliance Group Inc. Spa system with flow control feature
WO2010039580A1 (en) * 2008-10-01 2010-04-08 A.O. Smith Corporation Controller for a motor and a method of controlling the motor
MX2011003708A (en) 2008-10-06 2011-06-16 Pentair Water Pool & Spa Inc Method of operating a safety vacuum release system.
US8436559B2 (en) 2009-06-09 2013-05-07 Sta-Rite Industries, Llc System and method for motor drive control pad and drive terminals
US8564233B2 (en) 2009-06-09 2013-10-22 Sta-Rite Industries, Llc Safety system and method for pump and motor
GB2474691A (en) * 2009-10-23 2011-04-27 Inverter Drive Systems Ltd Pump Control System And Method
FR2952135B1 (en) * 2009-11-04 2013-02-22 Seb Sa METHOD FOR CONTROLLING A PIEZOELECTRIC PUMP OF HOUSEHOLD APPLIANCE AND HOUSEHOLD APPLIANCE IMPLEMENTING SAID METHOD
SG191067A1 (en) 2010-12-08 2013-08-30 Pentair Water Pool & Spa Inc Discharge vacuum relief valve for safety vacuum release system
US8920132B2 (en) * 2010-12-30 2014-12-30 Lennox Industries Inc. Automatic blower control
WO2013067206A1 (en) 2011-11-01 2013-05-10 Pentair Water Pool And Spa, Inc. Flow locking system and method
US9745974B2 (en) 2011-12-07 2017-08-29 Flow Control LLC Pump using multi voltage electronics with run dry and over current protection
WO2013086317A1 (en) 2011-12-07 2013-06-13 Flow Control Llc. Pump using multi voltage electronics with run dry and over current protection
US10209751B2 (en) * 2012-02-14 2019-02-19 Emerson Electric Co. Relay switch control and related methods
US9885360B2 (en) 2012-10-25 2018-02-06 Pentair Flow Technologies, Llc Battery backup sump pump systems and methods
ES2762510T3 (en) 2013-03-15 2020-05-25 Hayward Ind Inc Modular pool / whirlpool control system
US11000449B2 (en) 2016-01-22 2021-05-11 Hayward Industries, Inc. Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment
US11720085B2 (en) 2016-01-22 2023-08-08 Hayward Industries, Inc. Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment
US20190078570A1 (en) * 2017-09-14 2019-03-14 Milton Roy, Llc Automatic Initiation of Priming Sequence for Metering Pumps
EP4046867A1 (en) * 2021-02-23 2022-08-24 HMK Bilcon A/S Pump design and operation
CN114837924A (en) * 2022-04-11 2022-08-02 北京主线科技有限公司 Vehicle air pump control method and device, vehicle and storage medium
CN116085294A (en) * 2023-04-10 2023-05-09 江西清华泰豪三波电机有限公司 Control device and power supply system

Family Cites Families (90)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2632468A (en) * 1946-08-09 1953-03-24 John A Maxwell Soda fountain draft head
US3617839A (en) * 1969-12-01 1971-11-02 Lear Siegler Inc Brushless motor and inverter
US3781925A (en) * 1971-11-26 1974-01-01 G Curtis Pool water temperature control
US4185187A (en) * 1977-08-17 1980-01-22 Rogers David H Electric water heating apparatus
US4371315A (en) * 1980-09-02 1983-02-01 International Telephone And Telegraph Corporation Pressure booster system with low-flow shut-down control
US4428434A (en) * 1981-06-19 1984-01-31 Gelaude Jonathon L Automatic fire protection system
US4420787A (en) * 1981-12-03 1983-12-13 Spring Valley Associates Inc. Water pump protector
US4998097A (en) * 1983-07-11 1991-03-05 Square D Company Mechanically operated pressure switch having solid state components
US4678404A (en) * 1983-10-28 1987-07-07 Hughes Tool Company Low volume variable rpm submersible well pump
US4514989A (en) * 1984-05-14 1985-05-07 Carrier Corporation Method and control system for protecting an electric motor driven compressor in a refrigeration system
US4581900A (en) * 1984-12-24 1986-04-15 Borg-Warner Corporation Method and apparatus for detecting surge in centrifugal compressors driven by electric motors
US4647825A (en) * 1985-02-25 1987-03-03 Square D Company Up-to-speed enable for jam under load and phase loss
US4697464A (en) * 1986-04-16 1987-10-06 Martin Thomas E Pressure washer systems analyzer
USRE33874E (en) * 1986-05-22 1992-04-07 Franklin Electric Co., Inc. Electric motor load sensing system
US4703387A (en) 1986-05-22 1987-10-27 Franklin Electric Co., Inc. Electric motor underload protection system
US4896101A (en) * 1986-12-03 1990-01-23 Cobb Harold R W Method for monitoring, recording, and evaluating valve operating trends
US4839571A (en) * 1987-03-17 1989-06-13 Barber-Greene Company Safety back-up for metering pump control
US5361215A (en) * 1987-05-27 1994-11-01 Siege Industries, Inc. Spa control system
US4781525A (en) * 1987-07-17 1988-11-01 Minnesota Mining And Manufacturing Company Flow measurement system
US4841404A (en) * 1987-10-07 1989-06-20 Spring Valley Associates, Inc. Pump and electric motor protector
US4996646A (en) * 1988-03-31 1991-02-26 Square D Company Microprocessor-controlled circuit breaker and system
US5167041A (en) * 1990-06-20 1992-12-01 Kdi American Products, Inc. Suction fitting with pump control device
US5347664A (en) * 1990-06-20 1994-09-20 Kdi American Products, Inc. Suction fitting with pump control device
US5255148A (en) * 1990-08-24 1993-10-19 Pacific Scientific Company Autoranging faulted circuit indicator
US5234286A (en) * 1992-01-08 1993-08-10 Kenneth Wagner Underground water reservoir
US5473497A (en) * 1993-02-05 1995-12-05 Franklin Electric Co., Inc. Electronic motor load sensing device
US5632468A (en) * 1993-02-24 1997-05-27 Aquatec Water Systems, Inc. Control circuit for solenoid valve
US5422014A (en) * 1993-03-18 1995-06-06 Allen; Ross R. Automatic chemical monitor and control system
US5959534A (en) * 1993-10-29 1999-09-28 Splash Industries, Inc. Swimming pool alarm
US5577890A (en) * 1994-03-01 1996-11-26 Trilogy Controls, Inc. Solid state pump control and protection system
US5624237A (en) * 1994-03-29 1997-04-29 Prescott; Russell E. Pump overload control assembly
US6768279B1 (en) * 1994-05-27 2004-07-27 Emerson Electric Co. Reprogrammable motor drive and control therefore
US5727933A (en) * 1995-12-20 1998-03-17 Hale Fire Pump Company Pump and flow sensor combination
FR2744572B1 (en) * 1996-02-02 1998-03-27 Schneider Electric Sa ELECTRONIC RELAY
US5601413A (en) * 1996-02-23 1997-02-11 Great Plains Industries, Inc. Automatic low fluid shut-off method for a pumping system
US6074180A (en) * 1996-05-03 2000-06-13 Medquest Products, Inc. Hybrid magnetically suspended and rotated centrifugal pumping apparatus and method
KR20000015873A (en) * 1996-05-22 2000-03-15 로날드 지. 헬러 Method for detecting the occurrence of surge in a centrifugal compressor
US5883489A (en) * 1996-09-27 1999-03-16 General Electric Company High speed deep well pump for residential use
US6092992A (en) * 1996-10-24 2000-07-25 Imblum; Gregory G. System and method for pump control and fault detection
DE19804175A1 (en) * 1997-02-04 1998-09-03 Nissan Motor Automatic door or window operating system with incorporated obstacle detection
US6616413B2 (en) * 1998-03-20 2003-09-09 James C. Humpheries Automatic optimizing pump and sensor system
US5907281A (en) * 1998-05-05 1999-05-25 Johnson Engineering Corporation Swimmer location monitor
JPH11348794A (en) * 1998-06-08 1999-12-21 Koyo Seiko Co Ltd Power steering device
US6282370B1 (en) * 1998-09-03 2001-08-28 Balboa Instruments, Inc. Control system for bathers
JP2000179339A (en) * 1998-12-18 2000-06-27 Aisin Seiki Co Ltd Cooling water circulating device
TW470815B (en) * 1999-04-30 2002-01-01 Arumo Technos Kk Method and apparatus for controlling a vacuum pump
DE19931961A1 (en) * 1999-07-12 2001-02-01 Danfoss As Method for controlling a delivery quantity of a pump
US6227808B1 (en) * 1999-07-15 2001-05-08 Hydroair A Unit Of Itt Industries Spa pressure sensing system capable of entrapment detection
US6157304A (en) * 1999-09-01 2000-12-05 Bennett; Michelle S. Pool alarm system including motion detectors and a drain blockage sensor
US6481973B1 (en) * 1999-10-27 2002-11-19 Little Giant Pump Company Method of operating variable-speed submersible pump unit
FR2801645B1 (en) * 1999-11-30 2005-09-23 Matsushita Electric Ind Co Ltd DEVICE FOR DRIVING A LINEAR COMPRESSOR, SUPPORT AND INFORMATION ASSEMBLY
US6638023B2 (en) * 2001-01-05 2003-10-28 Little Giant Pump Company Method and system for adjusting operating parameters of computer controlled pumps
DE10116339B4 (en) * 2001-04-02 2005-05-12 Danfoss Drives A/S Method for operating a centrifugal pump
US6543940B2 (en) * 2001-04-05 2003-04-08 Max Chu Fiber converter faceplate outlet
US7046163B2 (en) * 2001-05-24 2006-05-16 Watkins Manufacturing Corporation Two-way RF remote control
US6534940B2 (en) * 2001-06-18 2003-03-18 Smart Marine Systems, Llc Marine macerator pump control module
US6676831B2 (en) * 2001-08-17 2004-01-13 Michael Lawrence Wolfe Modular integrated multifunction pool safety controller (MIMPSC)
US6625519B2 (en) * 2001-10-01 2003-09-23 Veeder-Root Company Inc. Pump controller for submersible turbine pumps
US7083392B2 (en) * 2001-11-26 2006-08-01 Shurflo Pump Manufacturing Company, Inc. Pump and pump control circuit apparatus and method
JP2003176788A (en) * 2001-12-10 2003-06-27 Matsushita Electric Ind Co Ltd Drive unit for linear compressor
US20030106147A1 (en) * 2001-12-10 2003-06-12 Cohen Joseph D. Propulsion-Release Safety Vacuum Release System
US7117120B2 (en) * 2002-09-27 2006-10-03 Unico, Inc. Control system for centrifugal pumps
US6806677B2 (en) * 2002-10-11 2004-10-19 Gerard Kelly Automatic control switch for an electric motor
US6875961B1 (en) * 2003-03-06 2005-04-05 Thornbury Investments, Inc. Method and means for controlling electrical distribution
US6895608B2 (en) * 2003-04-16 2005-05-24 Paramount Leisure Industries, Inc. Hydraulic suction fuse for swimming pools
JP3924548B2 (en) * 2003-04-22 2007-06-06 株式会社東海理化電機製作所 Window glass pinching presence / absence detection device
US6998807B2 (en) * 2003-04-25 2006-02-14 Itt Manufacturing Enterprises, Inc. Active sensing and switching device
US6989649B2 (en) * 2003-07-09 2006-01-24 A. O. Smith Corporation Switch assembly, electric machine having the switch assembly, and method of controlling the same
US7163380B2 (en) * 2003-07-29 2007-01-16 Tokyo Electron Limited Control of fluid flow in the processing of an object with a fluid
US8540493B2 (en) * 2003-12-08 2013-09-24 Sta-Rite Industries, Llc Pump control system and method
US20050133088A1 (en) * 2003-12-19 2005-06-23 Zorba, Agio & Bologeorges, L.P. Solar-powered water features with submersible solar cells
US20050193485A1 (en) * 2004-03-02 2005-09-08 Wolfe Michael L. Machine for anticipatory sensing and intervention to avoid swimmer entrapment
US8177520B2 (en) * 2004-04-09 2012-05-15 Regal Beloit Epc Inc. Controller for a motor and a method of controlling the motor
US20080095639A1 (en) * 2006-10-13 2008-04-24 A.O. Smith Corporation Controller for a motor and a method of controlling the motor
US8133034B2 (en) * 2004-04-09 2012-03-13 Regal Beloit Epc Inc. Controller for a motor and a method of controlling the motor
US20110002792A1 (en) * 2004-04-09 2011-01-06 Bartos Ronald P Controller for a motor and a method of controlling the motor
US7080508B2 (en) * 2004-05-13 2006-07-25 Itt Manufacturing Enterprises, Inc. Torque controlled pump protection with mechanical loss compensation
CA2683339C (en) * 2004-06-18 2010-08-17 Unico, Inc. Method and system for improving pump efficiency and productivity under power disturbance conditions
US7142125B2 (en) * 2005-01-24 2006-11-28 Hewlett-Packard Development Company, L.P. Fan monitoring for failure prediction
US7250736B2 (en) * 2005-03-30 2007-07-31 Asmo Co., Ltd. Opening and closing member control system
US8721295B2 (en) * 2005-04-08 2014-05-13 Ebara Corporation Vacuum pump self-diagnosis method, vacuum pump self-diagnosis system, and vacuum pump central monitoring system
US7417834B2 (en) * 2005-04-22 2008-08-26 Balboa Instruments, Inc. Shutoff system for pool or spa
US20070177985A1 (en) * 2005-07-21 2007-08-02 Walls James C Integral sensor and control for dry run and flow fault protection of a pump
US20070058314A1 (en) * 2005-09-09 2007-03-15 Maddox Harold D Controlling spas
US20070061051A1 (en) * 2005-09-09 2007-03-15 Maddox Harold D Controlling spas
US8011895B2 (en) * 2006-01-06 2011-09-06 Itt Manufacturing Enterprises, Inc. No water / dead head detection pump protection algorithm
US20070258827A1 (en) * 2006-05-02 2007-11-08 Daniel Gierke Sump pump system
US20080095638A1 (en) * 2006-10-13 2008-04-24 A.O. Smith Corporation Controller for a motor and a method of controlling the motor
US7690897B2 (en) * 2006-10-13 2010-04-06 A.O. Smith Corporation Controller for a motor and a method of controlling the motor
WO2010039580A1 (en) * 2008-10-01 2010-04-08 A.O. Smith Corporation Controller for a motor and a method of controlling the motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113202812A (en) * 2021-05-31 2021-08-03 陈功强 Water pump of automobile engine

Also Published As

Publication number Publication date
DE602007013339D1 (en) 2011-05-05
EP1914427B1 (en) 2011-03-23
ES2363808T3 (en) 2011-08-17
EP1914427A1 (en) 2008-04-23
US20080095639A1 (en) 2008-04-24
CA2605891C (en) 2015-04-14
US20090288407A1 (en) 2009-11-26
EP1914427B8 (en) 2011-10-05

Similar Documents

Publication Publication Date Title
CA2605891A1 (en) Controller for a motor and a method of controlling the motor
US7795827B2 (en) Control system for controlling motors for heating, ventilation and air conditioning or pump
US5941690A (en) Constant pressure variable speed inverter control booster pump system
CA2606111A1 (en) Controller for a motor and a method of controlling the motor
EP1816352A3 (en) Controller for a motor and a method of controlling the motor
WO2004001515A3 (en) Speed and fluid flow controller
EP1911977A2 (en) Controller for A Motor and a Method of Controlling the Motor
US20110002792A1 (en) Controller for a motor and a method of controlling the motor
JP2012522182A5 (en)
KR970047710A (en) Refrigerator Control Unit Using Linear Compressor
WO2008081856A1 (en) Travel control device for hydraulic traveling vehicle
EP1808956A3 (en) Driving apparatus and driving system for electric motor
DK2222215T3 (en) Device for controlling or regulating the engine power of a vacuum cleaner.
CN102620387B (en) Temperature control system, temperature control method and air conditioning system
JP2005016460A (en) Control method and device for electric liquid pump
KR101300419B1 (en) Control apparatus for hydraulic system
CN102102681B (en) Fan control system
KR200387543Y1 (en) Inverter built-in type booster pump system
JP3558808B2 (en) Automatic water supply
JPH1162887A (en) Surging detector of blower, detecting method therefor and surging correcting method
WO2008138585A3 (en) Apparatus for controlling a water-pressurization system
JPH08284841A (en) Pump device
EP3388676B1 (en) Operation control device and operation control method for vacuum pump assembly
EP1858153A3 (en) Electric motor and method for actuating such a motor
JP3221920B2 (en) Automatic water supply

Legal Events

Date Code Title Description
EEER Examination request