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:
Dec. 27, 2011
Filed:
May. 19, 2009
Noriaki Itagaki, Yokohama, JP;
Nobuyuki Ichimaru, Yokohama, JP;
Takahide Kobayashi, Kawaguchi, JP;
Tatsuya Gankai, Chiba, JP;
Takanori Fukao, Kyoto, JP;
Noriaki Itagaki, Yokohama, JP;
Nobuyuki Ichimaru, Yokohama, JP;
Takahide Kobayashi, Kawaguchi, JP;
Tatsuya Gankai, Chiba, JP;
Takanori Fukao, Kyoto, JP;
Hitachi, Ltd., Tokyo, JP;
Kobe University, Kobe, JP;
Abstract
The present invention provides a suspension control apparatus capable of an excellent vibration control by a model thereof designed to incorporate nonlinearity and a time-lag element of a control damper. The present invention employs the backstepping method which is one of nonlinear control methods, and is designed so as to incorporate the nonlinearity of a damper. In addition, a nonlinear controlleruses a damping force Fu obtained by expressing the dynamics of a damping force characteristic variable portion [damping force Fu(v, i)] by a first-order lag system, so as to compensate the dynamics of the damper, whereby a control system is formed so as to incorporate the time-lag element of the control damper. As a result, it is possible to reduce time lag, and to practically adjust a control force according to the characteristics of the control damper.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile