In a motor control unit able to accurately detect a current-carrying failure without adding a motor rotation angular velocity to determination conditions, a current-carrying failure detection unit (71) determines whether a first determination condition that a phase current value is smaller than or equal to a predetermined current value, a power supply voltage (Vps) is higher than or equal to a predetermined voltage value, and a duty command value is continuously larger than or equal to an upper limit of a predetermined range corresponding to the predetermined current value is satisfied, determines whether a second determination condition that the phase current value is smaller than or equal to the predetermined current value, the power supply voltage (Vps) is higher than or equal to the predetermined voltage value, and the duty command value is continuously smaller than or equal to a lower limit of the predetermined range is satisfied. The current-carrying failure detection unit (71) measures a duration of a state where the first determination condition is satisfied, and a duration of a state where the second determination condition is satisfied. When the first or second duration exceeds a predetermined reference period, the current-carrying failure detection unit (71) determines that a current-carrying failure has occurred.
Motor control unit and vehicle steering system
Motorsteuereinheit und Fahrzeuglenksystem
Unité de commande de moteur et système de direction de véhicule
2019-08-14
Patent
Elektronische Ressource
Englisch
IPC: | 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 / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES |
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