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. 19, 2013
Filed:
Jan. 04, 2011
Masaki Fujimoto, Toyota, JP;
Masaki Fujimoto, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
An Assist Control Unitdetects a power generation state of an electric motor where the direction for generating torque of motor current im does not match the rotational direction of steering speed ωx (S), and calculates an Amount E Corresponding to Power Generation Energy during a period when the power generation state is detected continuously (S). When the Amount E Corresponding to Power Generation Energy exceeds a Criterion Value E(S: Yes), the state is judged as a reverse input state that a large reverse input is acting on a steering mechanism from a tire. Consequently, a small reverse input state not affecting the steering mechanism is excluded, and a large reverse input state having a risk of affecting the steering mechanism can be detected precisely.