Multiobjective and H2/H control of vehicle active suspension based on LMI
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Abstract:
A multiobjective and mixed H2/H controller based on LMI(linear matrix inequality) is developed to balance ride comfort and handling stability performance of vehicle. The multiobjective optimal control law is devised for an active suspension system of seven degreeoffreedom fullcar model. Norm H2 of the transfer function from road profile velocity disturbance to output evaluating signal is selected as the evaluating index of ride comfort performance, and norm H of the transfer function from road profile velocity disturbance to output evaluating signal is selected as the evaluating index of handing stability performance. The results from the simulation demonstrate that the controller obtains a good performance of ride comfort with the less expense of the handling stability.
