There are provided a motor control device and an electric power steering device that are configured to perform correction to advance an estimated angle of a motor electrical angle in response to a steering torque, and thereby can correct an estimated angle error acting in a direction delayed with respect to a steering torque, in the simple structure. A motor control device (25) includes a backup electrical angle detection circuit (24B) in which an inter-sensor error correction unit (54) calculates an advance gain (Gad) equal to or more than 1 with respect to input of a steering torque (Th) equal to or more than a predetermined torque value (Tht), and multiplies an output shaft angular velocity (ωos) by the advance gain (Gad) to calculate a post-advance steering angular velocity (ωosc) for correcting the estimated angle error of the direction delayed with respect to the steering direction. Then, an estimated angle calculation unit (55) of the backup electrical angle detection circuit (24B) integrates the post-advance steering angular velocity (ωosc), and, on the basis of a value of the integration, calculates a second motor rotation angle (θm2) that is an estimated value of a motor rotation angle (θm).
MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING DEVICE PROVIDED WITH SAME
MOTORSTEUERUNGSVORRICHTUNG UND DAMIT AUSGESTATTETE ELEKTRISCHE SERVOLENKVORRICHTUNG
DISPOSITIF DE COMMANDE DE MOTEUR ET DISPOSITIF DE DIRECTION ASSISTÉE ÉLECTRIQUE ÉQUIPÉ DE CELUI-CI
2021-01-13
Patent
Electronic Resource
English
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