US 7,321,816 B2
Model free semi-active vehicle suspension system
Christophe Lauwerys, Kessel-Lo (Belgium); and Jan Swevers, Meldert (Belgium)
Assigned to Tenneco Automotive Operating Company, Inc., Lake Forest, Ill. (US)
Filed on Apr. 22, 2005, as Appl. No. 11/111,832.
Claims priority of provisional application 60/565512, filed on Apr. 27, 2004.
Prior Publication US 2005/0240326 A1, Oct. 27, 2005
Int. Cl. B60G 17/015 (2006.01); B60G 17/018 (2006.01); B60G 17/08 (2006.01)
U.S. Cl. 701—37  [280/5.5] 18 Claims
OG exemplary drawing
 
1. A method of controlling a shock absorber system of a vehicle comprising a plurality of controlled shock absorbers, said method comprising:
linearizing the system by transforming original control inputs of the shock absorbers into virtual damper force input signals based on a bilinear damper characteristic;
decoupling system dynamics into modal components using static decoupling matrices that comprise the virtual damper force input signals to modal body accelerations of the vehicle; and
controlling the system with a linear decentralized controller based on the modal components.