Abstract

A new concept for a robust active rear steering(ARS)system is presented. The system exhibits good control performance even if the vehicle parameters and / or road surface conditions are changed. This system makes the vehicle follow the desired dynamic model by state feedback of both yaw rate and side slip angle. For utilization of a noisy yaw rate sensor and maintenance of high robust control performance, a controller with frequency-dependent gain characteristics was designed by μ synthesis. For estimatation of the side slip angle using a noisy sensor, a new time-variant observer employing a frequency filter was introduced. The results of the simulation and the experimental tests prove the great effect of the new ARS system.

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