Browse Publications Technical Papers 2019-01-0165
2019-04-02

Model Reference Control for Active Suspension System 2019-01-0165

The objective of this paper is to develop a Model Reference Control (MRC) Strategy for active suspension System. The MRC Strategy employs both the suspension lock ahead preview and Wheelbase preview concepts, and the methodology of the MRC based on the ideal hybrid skyhook-groundhook principal. The study performed using a 13 DoF vehicle vertical dynamics model including the active suspension actuators masses. The engine mass, driver seat and anti-roll bar have been considered in the model. The MRC strategy uses eight Proportional-Integral-Derivative (PID) controllers for both body and wheel controls. A gradient-based optimization algorithm is applied to obtain the controller parameters using a cost function including both ride comfort and road holding performance. A comparison is performed between the active suspension system provided with proposed MRC strategy, the ideal hybrid skyhook-groundhook suspension system, and the passive suspension system in terms of ride comfort and road holding. The results showed that, the proposed MRC strategy and controllers are able to track the ideal hybrid skyhook-groundhook, and provide significant improvements in both ride comfort and road holding.

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