The invention discloses an optimization method for PID control parameters of an automobile semi-active suspension. The optimization method comprises the following steps: constructing a 1/4 automobile semi-active suspension model; determining a state variable, an output variable and a state space expression equation of the semi-active suspension model; a PID controller is constructed; a sparrow algorithm is improved, and PID parameters are optimized and imported into a PID controller; the output of a semi-active controller suspension system is calculated, and a comfort level value is calculated; the invention discloses an improved sparrow algorithm semi-active suspension control system. The method has the beneficial effects that the degree of freedom of the quarter semi-active suspension is taken as a research object, a comfort function is provided according to different influence weights, the optimal PID parameter and the maximum comfort value are searched through continuous iterative comparison of a semi-active suspension control algorithm, and finally, the driving smoothness, the operation stability and the riding comfort are ensured; the optimization capacity of the sparrow algorithm is optimized, so that the sparrow algorithm controller is more reasonable for PID control parameters, and control over the suspension is more facilitated.
本发明公开了一种汽车半主动悬架的PID控制参数的优化方法,包括构建1/4车辆半主动悬架模型;确定半主动悬架模型的状态变量,输出变量和状态空间表达式方程;构建PID控制器;改进麻雀算法,优化PID参数导入PID控制器;计算半主动控制器悬架系统输出,并计算舒适度值;改进麻雀算法半主动悬架控制系统。有益效果:本发明本文以四分之一半主动悬架自由度为研究对象,根据不同影响权重,提出舒适度函数,通过半主动悬架控制算法不断迭代比较寻找最优PID参数,寻找最大舒适度值,最终确保行驶平顺性、操作稳定性和乘坐舒适性;优化麻雀算法的寻优能力,使得麻雀算法控制器对于PID控制的参数更加合理,更加有利于对悬架实施控制。
Optimization method for PID (Proportion Integration Differentiation) control parameters of automobile semi-active suspension
一种汽车半主动悬架的PID控制参数的优化方法
2023-03-28
Patent
Electronic Resource
Chinese
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |
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