In a motor control unit able to accurately estimate a motor rotation angle and a vehicle steering system including the motor control unit, a motor rotation direction estimation unit estimates the rough rotational position of a motor based on the combination of the signs of axis inductive voltage values (e± and e²) and the magnitude relation between the absolute values thereof when the absolute value of an inductive voltage value (E) is larger than a predetermined voltage value (Eth) , and estimates the rotation direction of the motor based on a change in the rough rotational position.
Motor control unit and vehicle steering system
Motorsteuereinheit und Fahrzeuglenksystem
Unité de commande de moteur et système de direction de véhicule
2020-06-10
Patent
Elektronische Ressource
Englisch
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