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:
Jun. 18, 2019
Filed:
Dec. 13, 2016
Denso Corporation, Kariya, Aichi-pref., JP;
Rei Ogata, Kariya, JP;
Junichi Ogoshi, Kariya, JP;
DENSO CORPORATION, Kariya, Aichi-pref., JP;
Abstract
A terminal voltage detection circuit of a motor control device detects first detection values of a first terminal of a DC motor and second detection values of a second terminal of the DC motor. An inter-terminal voltage calculation unit calculates inter-terminal voltage calculation values from the first detection values and the second detection values. The inter-terminal voltage calculation unit outputs one of the calculation values having the smallest absolute value as an inter-terminal voltage selection value. A steering angle speed estimation unit estimates a steering angle speed based on the selection value and a motor current. A compensation control unit executes a compensation control based on the steering angle speed estimated by the steering angle speed estimation unit. Accordingly, robustness of the compensation control is improved and excess assist is restricted.