Optimal Guaranteed Cost Control of Four-Wheel Steering Vehicle with Three Degree-of-Freedom

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Abstract:

A nonlinear model of 4WS vehicle with three degree-of-freedom is established, Considering the uncertain characteristic of the tire lateral stiffness, an guaranteed cost control scheme was proposed for vehicle stability control, the optimal guaranteed cost control laws is derived in terms of linear matrix inequalities (LMIs). The simulation results show that transient response amplitude of the yaw rate , center side-slip angle and lateral acceleration can be decreased greatly, a good steady-state response can be achieved at a high speed, which improves the driving safety and handling stability.

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557-563

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July 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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