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. 14, 2012
Filed:
Aug. 27, 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 Automotive Systems, Ltd., Ibaraki, JP;
Kobe University, Kobe, JP;
Abstract
A first observer gain of an actual damping force estimating observercalculates a dynamic characteristic compensating signal, and a second observer gain of an actual vehicle model state amount estimating observercalculates a vehicle model compensating signal, from an output deviation corresponding to a difference between a sprung speed (observation output) provided from a vehicleand an estimated sprung speed (estimated observation output) provided from a vehicle approximation model of the actual vehicle model state amount estimating observer. The dynamic characteristic compensating signal is input into a dynamic characteristic providing unit of the actual vehicle model state amount estimating observer, and is used for adjustment of the setting of the dynamic characteristic providing unit. Therefore, it is possible to curb time lag occurrence in a control, and thereby perform a vibration control with improved accuracy.