Optimal semi-active control for nonlinear random vibration of armored vehicle seat
HU Lingjun1, LIU Bin2, HUAN Ronghua1, ZHU Weiqiu1, LIU Yan3
1.College of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China;
2.China Electric Power Research Institute, Beijing 100192, China;
3.Zhejiang Provincial Electric Power Co, Ltd, State Grid, Hangzhou 310000, China
Abstract：When an armored vehicle drives on rough roads, its inside seat has violent vibration under random loads to significantly affect the comfort of crew members.Thus, it is of great importance to develop effective strategies for controlling seat random vibration.Here, an optimal semi-active control for nonlinear random vibration of armored vehicle seat was proposed.Firstly, the seat system of armored vehicle was taken as the study object, and its nonlinear stochastic dynamic model was established.Then, the stochastic average method and the random dynamic programming principle were applied to deduce the concrete form of the optimal semi-active control force.The statistics of the seat system steady-state response including probability density and mean square value, etc.under controlled and uncontrolled states were obtained.Finally, the correctness of the proposed method was verified with numerical simulation.Results showed that under controlled state, the control effect of the proposed control strategy on the mean square value of the seat system steady-state response reaches 85.0%, it has a good vibration reduction effect.
胡凌俊1，刘彬2，宦荣华1，朱位秋1，刘岩3. 装甲车辆座椅非线性随机振动的最优半主动控制[J]. 振动与冲击, 2020, 39(23): 220-224.
HU Lingjun1, LIU Bin2, HUAN Ronghua1, ZHU Weiqiu1, LIU Yan3. Optimal semi-active control for nonlinear random vibration of armored vehicle seat. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(23): 220-224.
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