The paper presents a fuzzy static output feedback controller design approach for vehicle electrohydraulic active suspensions based on Takagi–Sugeno (T–S) fuzzy modeling technique. The T–S fuzzy model is first applied to represent the nonlinear dynamics of an electrohydraulic suspension. Then, the fuzzy static output feedback controller is designed for the obtained T–S fuzzy model to optimize the performance of ride comfort through the parallel distributed compensation scheme. The sufficient conditions for the existence of such a controller are derived in terms of linear matrix inequalities (LMIs) with an equality constraint. A computational algorithm is presented to convert the equality constraint into a LMI so that the controller gains can be obtained by solving a minimization problem with LMI constraints. To validate the effectiveness of the proposed approach, two kinds of static output feedback controllers, which use suspension deflection and sprung mass velocity, and suspension deflection only, respectively, as feedback signals, are designed. It is confirmed by the simulations that the designed controllers can achieve good suspension performance similar to that of the active suspension with optimal skyhook damper.
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September 2009
Research Papers
Static Output Feedback Control for Electrohydraulic Active Suspensions via T–S Fuzzy Model Approach
Haiping Du
,
Haiping Du
Mechatronics and Intelligent Systems, Faculty of Engineering,
hdu@eng.uts.edu.au
University of Technology, Sydney
, P.O. Box 123, Broadway, NSW 2007, Australia
Search for other works by this author on:
Nong Zhang
Nong Zhang
Mechatronics and Intelligent Systems, Faculty of Engineering,
nong.zhang@uts.edu.au
University of Technology, Sydney
, P.O. Box 123, Broadway, NSW 2007, Australia
Search for other works by this author on:
Haiping Du
Mechatronics and Intelligent Systems, Faculty of Engineering,
University of Technology, Sydney
, P.O. Box 123, Broadway, NSW 2007, Australiahdu@eng.uts.edu.au
Nong Zhang
Mechatronics and Intelligent Systems, Faculty of Engineering,
University of Technology, Sydney
, P.O. Box 123, Broadway, NSW 2007, Australianong.zhang@uts.edu.au
J. Dyn. Sys., Meas., Control. Sep 2009, 131(5): 051004 (11 pages)
Published Online: August 17, 2009
Article history
Received:
November 26, 2007
Revised:
December 18, 2008
Published:
August 17, 2009
Citation
Du, H., and Zhang, N. (August 17, 2009). "Static Output Feedback Control for Electrohydraulic Active Suspensions via T–S Fuzzy Model Approach." ASME. J. Dyn. Sys., Meas., Control. September 2009; 131(5): 051004. https://doi.org/10.1115/1.3117194
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