Mixed H2/H controller design for active suspensions based on pole placement constraints

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Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (2) : 136-140，.

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Mixed H2/H controller design for active suspensions based on pole placement constraints

SUN Tao;ZHENG Song-lin;Zhang Zhen-dong;Gan Yi

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Abstract

An investigation is made to the multiobjective suspension control problem for a heavy-duty vehicle based on mixed H2/H optimal control synthesis. The controller is designed in such a way that it minimizes a given H2 performance index, which keeps the maximum supported H perturbation below appropriate levels γ. The robustness and performance aspects of suspension system are proper to compromise; whist the dynamic performance is satisfied based on LMI region pole placement. In comparison with simulation results of H2 and H control synthesis, it is possible that system performance could be improved by combining both techniques into one mixed norm optimization method to exploit the strengths of each norm.

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Mixed H2/H control / Active suspension / Frequency weighting function / Unmodelled dynamics uncertainty

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SUN Tao;ZHENG Song-lin;Zhang Zhen-dong;Gan Yi. Mixed H2/H controller design for active suspensions based on pole placement constraints[J]. Journal of Vibration and Shock, 2010, 29(2): 136-140，