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:
Apr. 02, 2002
Filed:
Apr. 18, 2000
Satoru Ohsaku, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A damping force control device and method controls damping forces of dampers at locations of respective wheels. A first target damping force that inhibits vibrations of a vehicle body in the heave direction is calculated for each of the wheels, based on a single wheel model of the vehicle which employs the skyhook theory. A second target damping force that inhibits vibrations of the vehicle body in the pitch direction is calculated for each of the wheels, based on a model of front and rear wheels of the vehicle. A third target damping force that inhibits vibrations of the vehicle body in the roll direction is calculated for each of the wheels, based on a model of left and right wheels of the vehicle. One of the first through third target damping forces that has the greatest absolute value is selected for each of the wheels. The damping force exerted by the damper at the location of each wheel is set to the selected target damping force. Such a damping force control device inhibits the vehicle from making pitch or roll movements without damaging the control performance for attenuating vertical vibrations of the vehicle body.