高技术通讯Issue(10)：106-116,11.DOI:10.3772/j.issn.10020470.2014.10.011
先导式大流量电液比例方向阀优化匹配研究
Research on optimization matching of high capacity electro hydraulic pilot proportional direction valves
摘要
Abstract
The control and structure design of a high capacity, electro hydraulic pilot proportional direction valve were studied, and a matching method for the dead zone nonlinear compensation and the optimization design of structure parameters was proposed based on the consideration that unreasonable control algorithms and structure designs for the valve can reduce its matching performance thus its position control performance is lowered. The mathematical model of the unmatched valve was established. The stability criterion of the valve was reached by using the describing function method, and the compensation circuit was used to compensate the dead zone to realize the match of the proportional controlling amplifier and the valve. Taking the superior position control performance as the target of optimization, a genetic algorithm was used to design the structure parameters of the throttling groove of the pilot valve, so the match of the pilot valve and the main valve was realized. A co simulation model for the valve was established based on AMESim and Simulink. The simulation results showed that the optimization and matching not only kept the stability of the system but also optimized the position control performance of the valve, and the method was verified to be feasible and have a certain reference value in the design of the valve.关键词
比例方向阀/死区非线性/参数匹配/联合仿真Key words
proportional direction valve/dead zone nonlinear/parameters matching/co simulation引用本文复制引用
艾超,孔祥东,宋豫,王娟,田德志..先导式大流量电液比例方向阀优化匹配研究[J].高技术通讯,2014,(10):106-116,11.基金项目
973计划(2014CB046405)，“十二五”国家科技支撑计划(2011BAF09B04)，国家自然科学基金(51375422)和燕山大学青年教师自主研究计划课题(13LGB005)资助项目。 （2014CB046405）
