摘要
对液压泵控马达系统和液压泵斜坡倾角电液伺服控制系统进行了理论建模,分析了液压泵控马达系统与电液伺服串联液压泵控马达系统关于阶跃输入控制信号的响应特性;将最优二次控制理论与动态鲁棒补偿法相结合设计了复合控制系统,对系统进行了仿真计算。仿真结果表明:电液伺服控制系统对整个系统的影响较小,可简化成比例环节;复合控制系统可以有效减少静态误差、提高系统动态响应精度。
Theoretical models of hydraulic pump-motor and electro-hydraulic servo control system of hydraulic pump were built up. The response characteristics of the two systems about step-input were analyzed. The results show that electro-hydraulic servo con- trol system can be simplified as a proportional component. The compound control system of hydraulic pump-motor was designed based on LQ theory and dynamic robust compensation method. The simulation results show that using the compound controller, the static-er- ror of the system can be decreased and the system dynamic response precision can be improved effectively.
出处
《机床与液压》
北大核心
2013年第5期75-77,共3页
Machine Tool & Hydraulics
基金
四川省科技厅科技支撑项目(2010GZ0173)
西昌学院2009研究生项目(XY09-2×××)
关键词
液压泵控马达
电液伺服系统
最优二次型控制
动态鲁棒补偿
Hydraulic pump-motor
Electro-hydraulic servo system
Optimal quadratic control
Dynamic robust compensation
