考虑输入和输出约束的主动悬架系统自适应容错控制
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河海大学 人工智能与自动化学院

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E-mail: yinlonghu@outlook.com.

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国家自然科学基金项目(62173125).


Adaptive fault-tolerant control of active suspension systems with input and output constraints
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College of Artificial Intelligence and Automation,Hohai University,Changzhou 213200,China

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    摘要:

    针对具有约束的不确定主动悬架系统(active suspension system, ASS), 提出一种考虑输入和输出约束的自适应容错控制方案. 首先, 设计一个有界约束函数来同时约束车身和轮胎的垂向位移, 以实现驾驶舒适度与轮胎抓地力之间的平衡. 其次, 为了进一步提高驾驶舒适度, 针对不确定车身子系统, 提出一种考虑输入约束的自适应容错控制律, 并与设计的有界约束函数进行叠加, 得到最终的控制律. 其中, 考虑到执行器故障及ASS不确定性带来的未知项, 采用自适应控制来逼近未知项的上界, 同时引入辅助系统对输入饱和进行补偿. 最终, 分析ASS的稳定性, 并通过仿真对比验证所提出方案的有效性.

    Abstract:

    An adaptive fault-tolerant control scheme considering input and output constraints for uncertain active suspension system (ASS) with constraints is proposed. Firstly, a bounded constraint function is designed to constrain both the vertical displacement of the car-body and the tire in order to achieve a balance between ride comfort and tire grip. Then, to further improve the ride comfort, an adaptive fault-tolerant control law considering input constraint is proposed for the uncertain car-body subsystem, and the final control law is obtained by adding the bounded constraint function. Considering the unknown term caused by actuator fault and ASS uncertainties, the adaptive control is adopted to approach its upper bound. Meanwhile, the auxiliary system is introduced to compensate for input saturation. Finally, the stability of the ASS is analysed and the effectiveness of the proposed scheme is verified by simulation.

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胡银龙,彭佳薇.考虑输入和输出约束的主动悬架系统自适应容错控制[J].控制与决策,2025,40(2):693-698

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  • 收稿日期:2023-12-28
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  • 在线发布日期: 2025-01-10
  • 出版日期: 2025-02-20
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