A motor device includes: a motor body including a rotor, multi-phase coils for rotating the rotor, and an oil-retaining bearing supporting the rotor for rotation; and a drive control unit detecting a position of the rotor based on counter electromotive force of any of the multi-phase coils, and controlling energization of the multi-phase coils according to the position of the rotor, wherein the drive control unit feedback-controls energization of the multi-phase coils such that rotational speed of the rotor does not fall below a threshold value at which detection of rotational position of the rotor based on the counter electromotive force is impossible.
MOTOR DEVICE AND VEHICLE-MOUNTED SEAT AIR CONDITIONER
2020-01-23
Patent
Electronic Resource
English
IPC: | H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |
Seat system using vehicle-mounted air conditioner and vehicle
European Patent Office | 2023
|SEAT CUSHION CONFIGURED TO USE VEHICLE-MOUNTED AIR CONDITIONER
European Patent Office | 2022
|