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. 30, 2010
Filed:
Mar. 29, 2007
Hirohide Matsushima, Kobe, JP;
Yoji Fukami, Kakogawa, JP;
Takeshi Ikeda, Akashi, JP;
Kozo Suzuki, Kobe, JP;
Hirohide Matsushima, Kobe, JP;
Yoji Fukami, Kakogawa, JP;
Takeshi Ikeda, Akashi, JP;
Kozo Suzuki, Kobe, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe-shi, JP;
Abstract
A method of controlling a variable valve timing system comprising calculating, by a sliding mode control, a first control amount based on a deviation between a target value and an actually measured value of the position of the displacing member of the variable valve timing system, calculating a second control amount by integrating the deviation as an input when the deviation falls within a predetermined numeric value range containing a zero value, or by integrating the zero value as the input when the deviation falls outside the predetermined numeric value range; and adding the first control amount and the second control amount to set a compensation control amount for compensating the position of the displacing member.