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, 2013
Filed:
Mar. 01, 2011
Jin-yan Hsu, Changhua County, TW;
Chih-jung Yeh, Changhua County, TW;
Tsung-hsien HU, Changhua County, TW;
Hsien-chang Chiu, Changhua County, TW;
Jin-Yan Hsu, Changhua County, TW;
Chih-Jung Yeh, Changhua County, TW;
Tsung-Hsien Hu, Changhua County, TW;
Hsien-Chang Chiu, Changhua County, TW;
Automotive Research & Test Center, Changhua County, TW;
Abstract
The present invention discloses a self-calibration method for an electric power steering system, which can self-calibrate the sensors to a normalized state to prevent from signal distortion, whereby to maintain stable steering sense of the driver and promote robustness and performance of the EPS system. The self-calibration method includes a signal offset compensation tactic and a zero-point signal self-calibration tactic. The present invention determines whether to undertake self-calibration according to judgement tactics, including a sensor power supply judgement tactic, a sensor correctness judgement tactic, and a self-calibration triggering condition. The self-calibration method can increase the correctness of sensors, maintain the original steering-assisting function and promote robustness of the EPS system.