摘要
汽车传动液压控制系统是一个时变非线性的多元控制模型,传统的模糊控制算法不能有效满足控制精度,故提出一种基于改进PID算法的汽车传动过程中的液压控制模型设计方法。根据汽车传动液压伺服的助力传递模型构建压力-流量特性方程和活塞运动方程,得到汽车传动液压控制的约束参量体系。采用改进的PID控制策略进行控制约束参量的实时整定调整,进行动态流量和液位修正,提高液压控制的准确度,得出改进的模糊控制规则。仿真结果表明,该控制模型对液位响应的收敛性较好,液压超调量几乎为0,对汽车传动控制具有更好的动态性能。
Automotive transmission hydraulic control system is a multi-unit control model of time-varying nonlinear. The traditional fuzzy control algorithm cannot effectively meet the control precision, so a design method of the improved PID algorithmbased hydraulic control model used in the process of automotive transmission is presented. The pressure-flow characteristic equation and the piston motion equation were established according to the hydraulic servo assisted transfer model of automobile transmission. The constraint parameter system for automotive transmission hydraulic control was obtained. The improved PID control strategy is used to adjust the control parameters in real time, and modify the dynamic flow and liquid level to improve the accuracy of hydraulic control. The simulation results show that the control model has good convergence to the liquid level response, the hydraulic overshoot is almost 0, which has better dynamic performance for the vehicle transmission control.
出处
《现代电子技术》
北大核心
2017年第16期90-93,共4页
Modern Electronics Technique
基金
国家自然科学基金(11472107)
关键词
PID
模糊控制
汽车传动
液压控制
PID
fuzzy control
automobile transmission
hydraulic control
