电液复合伺服系统

 飞行模拟转台的伺服系统要求阀-马达组合的连续调速比很大（例如1100以上）,负载惯量大的（例如30千克·厘米·秒²）模拟转台只能采用电液伺服系统。本文介绍一种电液复合伺服系统,使阀-马达组合的调速比由原来的180提高到1800左右,系统的其它指标也有改善,满足了转台伺服系统的要求。 文章列举了国内用于模拟转台的马达的调速比,分析了柱塞式马达调速比低的原因及改善办法,提出了电液复合伺服系统。文中介绍了电液复合伺服系统的工作原理并进行了理论分析,推导出复合系统方块图及传递函数,对复合系统进行动态分析并与原系统对比。最后给出了一系列实验的典型数据和曲线。

A NEW COMPLEX ELECTROHYDRAULIC SERVOSYSTEM

The servosystem of a flight motion simulator requires its servovalve-motor combination to possess a great ratio of continuous adjustable rate （e. g. more than 1100）. In general, only the electrohydraulic servosystem is available to the simulator with a great load inertia （e. g. 30 kg.cm.sec2）. This paper presents a new complex electrohydraulic system, which increases the ratio of adjustable rates from 180 to about 1800 and improves other technical performances so as to meet the requirements of the servosystem in the flight motion simulator.- The paper lists some ratios of adjustable rates of domestic servomotors used in simulators, analyses the reasons of the low ratio of adjustable rates of the piston type motor and puts forward some measures to improve it. The paper also describes the principles of the complex electrohydraulic servosystem, gives the theoretical analysis and derives the block diagrams and transfer functions. Then, it Rives the dynamic analysis of the complex system and makes a comparison with the original one. Finally, it provides the typical data and plots of experiments.