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:
Feb. 10, 2009
Filed:
Mar. 26, 2007
Isao Fujiwara, Nagoya, JP;
Zhiqian Chen, Anjo, JP;
Isao Fujiwara, Nagoya, JP;
Zhiqian Chen, Anjo, JP;
Aisin AW Co., Ltd., Anjo, JP;
Abstract
An electric drive control apparatus and method calculates a current command value based on an electric machine target torque that represents a target value of a torque of an electric machine; calculates a current deviation between the current command value and a current applied to the electric machine; calculates a first inductance and a second inductance that each have a different amount of change caused by a change in the current; calculates an interference term based on the first inductance; calculates a proportional term and an integral term based on the current deviation and the second inductance; and calculates a voltage command value based on the interference term, the proportional term and the integral term.