The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 2019
Filed:
Aug. 04, 2017
Jtekt Corporation, Osaka-shi, Osaka, JP;
JTEKT CORPORATION, Osaka-shi, JP;
Abstract
There is provided a motor control device capable of preventing occurrence of a difference in command value between control systems and reducing torque ripples and noise and vibration of a motor, unlike in a case where a motor is controlled by control systems that are independent from each other. In a motor control device, at least one of parameters for a first control system is shared by both of the systems, and a first control calculation circuit and a second control calculation circuit calculate the assist command values based on the parameter. Thus, motor drive circuits of the control systems drive motor coils based on the assist command values. Namely, when the steering torques and the vehicle speeds for the control systems are all normal, assist control circuits of the control systems calculate the assist command values based on the steering torque and the vehicle speed.