自动变速器电磁阀通用控制算法设计

Universal Control Algorithm Development of Automatic Transmission Solenoid Valve

为了简化自动变速器电磁阀控制算法的开发,提出建立控制算法的模块化和通用化设计流程。以无级变速器系统压力电磁阀为例,对控制算法的设计流程进行论述。试验获取电磁阀的稳态响应特性、阶跃响应特性和滞后特性,在此基础上设计开环控制表、比例控制器和滞后补偿模块,共同组成模块化的通用控制算法。相对于将误差作为唯一输入的常规闭环控制算法,通用控制算法同时将误差和目标值作为输入,有效利用被控对象和系统状态信息。试验结果验证了所述控制算法的控制精度和动态响应性能。

To simplify the design process of automatic transmission solenoid valve control algorithm,a development process of modularized and universal control algorithm was present. Taking continuously variable transmission system line pressure valve as an example,control algorithm development process was described. Steady-state characteristics,step-pulse respond characteristics and lag characteristics of solenoid valve were tested. Based on these characteristics,open-loop control table,closed-control algorithm and lag compensation model were designed and made up modularized and universal compound control algorithm. Compared to error as the single input in normal control algorithms,the error and target value were taken as the input parameters and system information was used more effectively in the proposed algorithm. According to the experimental results,the control accuracy and dynamic property of the proposed algorithm are proved.