气液联控伺服系统的工作性能分析及试验研究  

Performance Analysis and Experimental Investigation to Pneumatic-Hydraulic-Combination-Control System

作　　者：徐秀芬[1] 赵克定[1] 袁立鹏[1] 

机构地区：[1]哈尔滨工业大学机电工程学院,哈尔滨150001

出　　处：《西安交通大学学报》2005年第3期266-269,共4页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金资助项目(50175016).

摘　　要：为从根本上克服常规气压伺服系统的缺点,将液体介质引入到气压伺服系统中,并对气、液进行闭环控制,从而构成了一种气、液复合介质控制系统———气液联控伺服系统.系统应用高速开关阀,用脉宽调制(PWM)的方法进行控制.采用单神经元自适应控制器,根据所建立的状态方程进行了系统的控制仿真,并进行了典型信号的跟踪试验.仿真和试验结果表明,气液联控伺服系统的正弦信号跟踪能力、低速性能均高于常规气压伺服系统,系统可实现无超调定位,且具有较高的位置刚度和精度.To remedy the disadvantages of conventional pneumatic servo system, pneumatic-hydraulic-combination-control (PHCC) servo system is put forward, where the liquid medium is led into the conventional pneumatic servo system and controlled in closed-loop simultaneously. High-speed on-off valves are used and controlled with pulse width modulation (PWM) in this system. The system is simulated and tested with typical signal input via a single neuron adaptive controller based on the established state equation. The results of simulation and experiments show that PHCC system achieves a better tracking performance of typical signals than conventional pneumatic servo system, also realizes location without overshoot as well as higher position stiffness and accuracy.

关 键 词：气液联控 非线性系统 仿真 控制 

分 类 号：TP271[自动化与计算机技术—检测技术与自动化装置]