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:
Mar. 27, 2013
Microspace Corporation, Tokyo, JP;
Taiyo Yuden Co., Ltd., Tokyo, JP;
Masato Tanaka, Tokyo, JP;
Kazuo Asanuma, Tokyo, JP;
Yasuo Hosaka, Tokyo, JP;
Hirokazu Shirakawa, Tokyo, JP;
MICROSPACE CORPORATION, Tokyo, JP;
TAIYO YUDEN CO., LTD., Tokyo, JP;
Abstract
A motor drive control device of an electric power-assisted vehicle that has a gear shifter and a motor, and in which a first ratio of the number of drive rotations in the motor to the number of drive rotations of a pedal changes based on changes in a gear ratio in the gear shifter, includes: a gear ratio obtaining part that obtains the gear ratio of the gear shifter; and a calculating part that calculates an assist torque, which is a target value for a drive torque of the motor, from the pedal input torque based on the gear ratio obtained by the gear ratio obtaining part.