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:
Jul. 09, 2019
Filed:
Mar. 08, 2017
Nsk Ltd., Tokyo, JP;
Takahiro Tsubaki, Maebashi, JP;
Yuzuru Hoshi, Maebashi, JP;
NSK LTD., Tokyo, JP;
Abstract
A tuning device of an electric power steering apparatus assisting steering based on the correspondence relationship between a steering torque and a steering auxiliary command value according to the steering torque. The tuning device receives a plurality of candidate points represented by a steering torque and a candidate value of the steering auxiliary command value according to the steering torque, calculates a high order polynomial approximating the plurality of candidate points, calculates a plurality of adjustment points, the number of which is larger than the plurality of candidate points and which are represented by the steering torque and the steering auxiliary command value according to the steering torque, based on the high order polynomial, calculates a plurality of linear functions connecting two adjacent points in the plurality of adjustment points, and outputs information on the plurality of linear functions in order to adjust the correspondence relationship.