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:
Nov. 26, 2019
Filed:
Oct. 19, 2017
Jtekt Corporation, Osaka-shi, Osaka, JP;
Denso Corporation, Kariya, Aichi-pref., JP;
Takahiro Toko, Takahama, JP;
Hiromasa Tamaki, Okazaki, JP;
Akira Nambu, Okazaki, JP;
Takahiro Kojo, Gotenba, JP;
Nobuyori Nakajima, Kariya, JP;
JTEKT CORPORATION, Osaka, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A steering control device has a steering actuator as an operation target, the steering actuator includes a motor and a steering mechanism mechanically connected to a rotary shaft of the motor. The steering control device includes a controller configured to perform i) a low-temperature process of changing a torque of the motor when an estimated value estimated from a temperature of a lubrication target part of the steering mechanism is equal to or lower than a predetermined value with respect to when the estimated value is higher than the predetermined value and ii) an estimation process of calculating the estimated value which is set be lower than a detected value of a temperature sensor detecting a temperature of a predetermined member attached to the steering mechanism based on a heat emission parameter of the steering actuator associated with a current flow with the detected value as an input.