Constant components and rotation fundamental mode components on the slide plane between a rotor and a stator are derived from a magnetic field distribution at a predetermined time. The analysis space is divided into a rotor space and a stator space. A fundamental mode on the slide plane is rotated by...http://www.google.ca/patents/US7069162?utm_source=gb-gplus-sharePatent US7069162 - Magnetic field analysis method and programs for rotating machines
