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:
Jul. 27, 2010
Filed:
Jul. 18, 2008
Shintaro Osaki, Nisshin, JP;
Hiroyuki Kodama, Kariya, JP;
Masayoshi Takeda, Kariya, JP;
Kazunori Kadowaki, Nagoya, JP;
Hajime Kumabe, Kariya, JP;
Yasuhiro Nakai, Kariya, JP;
Satoshi Niwa, Nagoya, JP;
Syotarou Fukuda, Obu, JP;
Shintaro Osaki, Nisshin, JP;
Hiroyuki Kodama, Kariya, JP;
Masayoshi Takeda, Kariya, JP;
Kazunori Kadowaki, Nagoya, JP;
Hajime Kumabe, Kariya, JP;
Yasuhiro Nakai, Kariya, JP;
Satoshi Niwa, Nagoya, JP;
Syotarou Fukuda, Obu, JP;
Advics Co., Ltd., Kariya, Aichi-Pref., JP;
Denso Corporation, Kariya, Aichi-Pref., JP;
Abstract
An estimated gradient value of a road is calculated based on a vehicle acceleration 'A' and a time varying portion 'A'' of a wheel speed. In a case that an acceleration corresponding value “Ggrad” for the estimated gradient value is not regarded as indicating an exact figure, due to influences of disturbances, the acceleration corresponding value “Ggrad” is corrected by a limiting value for rate-of-change with regard to the road gradient depending on respective vehicle speed, and by a limiting value for the road gradient. As a result, the acceleration corresponding value “Ggrad” for the estimated gradient value can be more exactly obtained.