Adaptive hierarchical optimization control for electrohydraulic suspension with resistor-capacitor operator
Adaptive hierarchical optimization control for electrohydraulic suspension with resistor-capacitor operator
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DOI：
10.1016/j.apm.2023.11.018
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发表时间：
2023-11
影响因子：
5
通讯作者：
Di Dai;Jie Zhang;Bangji Zhang;Penghao Li;Wen Hu
中科院分区：
文献类型：
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作者：
Di Dai;Jie Zhang;Bangji Zhang;Penghao Li;Wen Hu
为了使重型车辆具有最优的动力学性能，钢板弹簧集成电液悬架的控制器设计是一项复杂而具有挑战性的任务。针对钢板弹簧的迟滞特性、参数不确定性和非线性，提出了一种包含上下层控制器的递阶优化控制策略，以有效地抑制车身垂向振动。为了描述钢板弹簧的迟滞特性，通过实验辨识了一种新型的阻容算子迟滞模型，并利用遗传算法对其进行了优化。基于迟滞模型，设计了簧载质量不确定的滤波自适应反推控制器作为上层控制器，以产生期望的电液作动器主动力。然后，投影自适应模糊滑模控制被设计为底层控制器的非线性执行器与时变流体参数精确跟踪所需的目标力。针对钢板弹簧电液悬架系统的多目标优化问题，提出了分层采样算法对递阶控制策略的参数进行优化。仿真结果表明，该方法具有较好的鲁棒性和有效性，能够保证车辆行驶的舒适性、安全性和最优性能。
The controller design for integrated electrohydraulic suspension with leaf spring is a complicated and challenging task, aiming to achieve optimal dynamic performance for heavy vehicles. Considering the hysteresis property of leaf spring, parameter uncertainties and nonlinearity, a novel hierarchical optimization control strategy including upper and bottom controllers is proposed to effectively suppress the vertical vibration of vehicle body. To describe the hysteresis property of leaf spring, a novel resistor-capacitor operator hysteresis model is identified by experiment and optimized by genetic algorithm. Based on hysteresis model, the filter adaptive backstepping control with sprung mass uncertainty is designed as upper controller to generate the desired active force for electrohydraulic actuator. Then, the projection adaptive fuzzy sliding mode control is designed as bottom controller for nonlinear actuator with time-varying fluid parameter to accurately track the required target force. Additionally, a stratified sampling algorithm is investigated to optimize the parameters of hierarchical control strategy for addressing multi-objective optimization issue of electrohydraulic suspension with leaf spring. Finally, the results show that the proposed method has better robustness and effectiveness, and it can ensure ride comfort, safety and optimal performance.