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
10.06.2020
Patent
Elektronische Ressource
Englisch
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