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. 10, 2015
Filed:
Mar. 29, 2012
Tadayoshi Usami, Kariya, JP;
Nobuhiko Yoshioka, Anjyo, JP;
Tadayoshi Usami, Kariya, JP;
Nobuhiko Yoshioka, Anjyo, JP;
Advics Co., Ltd., Kariya-Shi, Aichi-Ken, JP;
Denso Corporation, Kariya-Shi, Aichi-Ken, JP;
Abstract
A temperature estimating unit includes an energy calculating unit that calculates a heat generation energy rate of a motor on the basis of a difference between power input to the motor and power output from the motor, a heat radiation energy calculating unit that calculates a heat radiation energy rate from a target member on the basis of a difference between a previous temperature estimation value Tm of the target member and an ambient temperature, and a thermal coefficient of the target member, and an amount calculating unit that calculates a temperature increase rate of the target member on the basis of a difference between the heat generation energy rate and the heat radiation energy rate, and an estimation value calculating unit that calculates a current temperature estimation value of the target member on the basis of the temperature increase rate and the previous temperature estimation value.