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:
Mar. 29, 2016
Filed:
Aug. 18, 2014
Applicant:
Ntn Corporation, Osaka, JP;
Inventor:
Takayoshi Ozaki, Iwata, JP;
Assignee:
NTN CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K 7/00 (2006.01); B60L 15/20 (2006.01); B60K 17/04 (2006.01); B60L 3/10 (2006.01);
U.S. Cl.
CPC ...
B60K 7/0007 (2013.01); B60K 17/046 (2013.01); B60L 3/102 (2013.01); B60L 3/104 (2013.01); B60L 3/106 (2013.01); B60L 3/108 (2013.01); B60L 15/20 (2013.01); B60L 15/2081 (2013.01); B60K 2007/0038 (2013.01); B60K 2007/0092 (2013.01); B60L 2220/44 (2013.01); Y02T 10/7258 (2013.01); Y02T 10/7275 (2013.01);
Abstract
An electric vehicle having an in-wheel motor drive system including: a wheel bearing unit rotatably supporting a drive wheel; a motor unit; and a reducer unit interposed between the motor unit and the wheel bearing unit, a motor torque command value Tmr being calculated from: (i) an estimate ^Te of external force influence on the drive wheel, which is estimated from the motor torque command value Tmr and a rotational frequency ω1 of a driven wheel; and (ii) a correction value Tc which is calculated from a rotational frequency ω2 of the drive wheel, an accelerator signal Tr and the estimate ^Tc.