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Research on performance of vehicle semi-active suspension applied magnetorheological damper based on linear quadratic Gaussian control

机译：基于线性二次高斯控制的车辆半主动悬架施加磁流变测压性能研究

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摘要

With the development of automobile technology, the traditional passive suspension cannot meet people's requirements for vehicle comfort and safety. For this reason, a variable damping semi-active suspension applied magnetorheological damper is proposed. By collecting various performance parameters of the front suspension, the optimal feedback control matrix is obtained by applying linear quadratic Gaussian control strategy, and the optimal damping force output is also obtained to improve comfort and vehicle safety by reducing vibration. The semi-active suspension model of a quarter vehicles was established by MATLAB/Simulink, and the simulation experiment was carried out. The results show that the semi-active suspension system with magnetorheological damper is superior to the traditional passive suspension in terms of vibration absorption; meanwhile, the root mean square values of vehicle acceleration, suspension dynamic deflection, tire dynamic travel, and tire dynamic load are reduced, which effectively improve the vehicle ride stability.
机译：随着汽车技术的发展，传统的被动悬架不能满足人们对车辆舒适和安全的要求。因此，提出了一种可变阻尼的半主动悬架施加的磁流变测压器。通过收集前悬架的各种性能参数，通过施加线性二次高斯控制策略获得最佳反馈控制矩阵，并且还获得最佳阻尼力输出来通过减小振动来改善舒适性和车辆安全性。 Matlab / Simulink建立了四分之一车辆的半主动悬架模型，进行了仿真实验。结果表明，具有磁流变器的半主动悬架系统在振动吸收方面优于传统的被动悬架;同时，减少了车辆加速，悬架动力偏转，轮胎动态行程和轮胎动态载荷的根均方值，从而有效地改善了车辆骑行稳定性。

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