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:
May. 17, 2005
Filed:
Apr. 23, 2003
Yoshiyuki Yasui, Nagoya, JP;
Wataru Tanaka, Anjo, JP;
Eiichi Ono, Toyota, JP;
Yuji Muragishi, Nagoya, JP;
Katsuhiro Asano, Toyoake, JP;
Minekazu Momiyama, Chiryu, JP;
Syoji Ogawa, Chiryu, JP;
Kenji Asano, Toyota, JP;
Yuzo Imoto, Chita-gun, JP;
Hiroaki Kato, Nukata-gun, JP;
Yoshiyuki Yasui, Nagoya, JP;
Wataru Tanaka, Anjo, JP;
Eiichi Ono, Toyota, JP;
Yuji Muragishi, Nagoya, JP;
Katsuhiro Asano, Toyoake, JP;
Minekazu Momiyama, Chiryu, JP;
Syoji Ogawa, Chiryu, JP;
Kenji Asano, Toyota, JP;
Yuzo Imoto, Chita-gun, JP;
Hiroaki Kato, Nukata-gun, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Toyoda Koki Kabushiki Kaisha, Kariya, JP;
Advics Co., Ltd., Kariya, JP;
Abstract
The present invention is directed to a wheel grip factor estimation apparatus, which includes a steering factor detection unit for detecting at least one of steering factors including a steering torque and steering effort applied to a steering system extending from a steering wheel to a suspension of a vehicle, an aligning torque estimation unit for estimating an aligning torque produced on at least a wheel of the vehicle on the basis of the steering factor detected by the steering factor detection unit, and a vehicle state variable detection unit for detecting a state variable of the vehicle. The apparatus further includes a wheel factor estimation unit for estimating at least one of wheel factors including a side force and slip angle applied to the wheel on the basis of the vehicle state variable, and a grip factor estimation unit for estimating a grip factor of at least a tire of the wheel, in accordance with a relationship between the estimated alignment torque and the estimated wheel factor.