Short circuit abnormality between redundant systems with respect to motor redundant systems is detected. A motor actuator includes a first inverter circuit configured to control power supplied to a first motor stator, a second inverter circuit configured to control power supplied to a second motor stator, and a control unit portion including a calculation circuit. The control unit portion includes a first inverter control portion configured to output a control signal for controlling driving of the first inverter circuit, a second inverter control portion configured to output a control signal for controlling driving of the second inverter circuit, and a short circuit determination portion configured to, when the power is supplied only to one inverter circuit of the first inverter circuit and the second inverter circuit by the first inverter control portion or the second inverter control portion, determine presence/absence of a short circuit between the first motor stator and the second motor stator based on a conductive state of the other inverter circuit of the first inverter circuit and the second inverter circuit.


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    Title :

    Motor actuator and power steering apparatus using the same


    Contributors:

    Publication date :

    2019-11-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B62D MOTOR VEHICLES , Motorfahrzeuge



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