广义脉码调制液压伺服控制的研究  

RESEARCH ON THE HYDRAULIC SERVO CONTROL WITH GENERALIZED PULSE CODE MODULATION

作　　者：王宣银[1] 陶国良[1] 

机构地区：[1]浙江大学流体传动及控制国家重点实验室,杭州310027

出　　处：《机械工程学报》2000年第12期14-17,20,共5页Journal of Mechanical Engineering

基　　金：国家自然科学基金资助项目!(59805016)

摘　　要：提出了广义脉码调制液压伺服控制，研究了用开关阀代替比例阀或伺服阀实现液压伺服控制的理论和方法。分析了开关阀控非对称液压缸伺服系统的动静态特性。为减少力负载对液压位置伺服控制精度的影响，设计了负载观测器；利用观测出来的等效负载进行反馈控制，抑制力负载干扰的影响，提高液压位置伺服控制的精度。The hydraulic servo control with generalized pulse code modulation is proposed, and the theory and method of realizing hydraulic servo control are researched by using on - off valves to substitute for servo valve or proportional valve, and the dynamic and static characteristics of the system are analyzed. To reduce the effect of force load on the control accuracy of the hydraulic position servo system, a load observer is designed. The equivalent lOad observed is fed back for resisting force lOad disturbance and raising the accuracy of the hydraulic position servo control.

关 键 词：广义脉码调制 开关阀 液压伺服控制 负载观测 

分 类 号：TH137[机械工程—机械制造及自动化] TP271.31[自动化与计算机技术—检测技术与自动化装置]