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:
Aug. 06, 2019
Filed:
Jul. 18, 2017
Denso Corporation, Kariya, Aichi-pref., JP;
Motoaki Kataoka, Kariya, JP;
Yosuke Hirate, Kariya, JP;
DENSO CORPORATION, Kariya, Aichi-pref., JP;
Abstract
A steering control apparatus controls an assistance torque outputted by a motor connected to a steering system mechanism that generates a steering torque. In the steering control apparatus, a load calculating unit estimates or detects a load acting on a steering shaft of the steering system mechanism. A target steering torque calculating unit calculates a target steering torque that is a target value of the steering torque, based on the estimated or detected load. A servo controller calculates a command value of the assistance torque such that a torque deviation that is a difference between the steering torque and the target steering torque is zero. A band correcting unit includes a band correction filter that extracts a component of a specific frequency band during a process of calculation from the load to the target steering torque, and corrects a gain of a predetermined transfer function at the extracted band.