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. 25, 2015
Filed:
May. 09, 2012
Bum Sik Kim, Gyeonggi-do, KR;
Tae Hwan Chung, Gyeonggi-do, KR;
Kang Ho Jeong, Gyeonggi-do, KR;
Hyundai Motor Company, Seoul, KR;
Abstract
Disclosed is a technique for compensating for an abnormal output of a resolver. More specifically, a central processing unit (CPU) sets a current motor position angle before compensation θas a current motor position angle θand obtains a motor position change Δθ[rad] between a current sampling [n] and a previous sampling [n−1] and a motor position change Δθ[rad] between the previous sampling [n−1] and a more previous sampling [n−2]. Subsequently, a variable A is calculated based on the above angles. The CPU determines whether to perform the compensation by comparing the calculated variable A and a calibration variable K and calculates a current motor position angle for compensation θ[rad]. Finally, the CPU compensates for the absence of motor rotor position information with the calculated current motor position angle for compensation θ[rad].