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本文运用控制理论的基本观点,以力反馈型电液伺服阀为例,对控制系统数学模型的简化原则和条件进行了分析,得出了相应的结论,从而对某些文献在介绍数模简化方面存在的问题进行了修正.在此基础上,结合2QDY—6型电液伺服阀的研制,编制了数字计算机程序和SHARPEL型袖珍计算器程序.通过计算机(器)辅助计算,探讨了反馈杆刚度K_f、磁路气隙g及放大器内阻rp等参数对频率特性的影响,为某些参数预算提供了依据.
In this paper, the basic theory of control theory, the force feedback type electro-hydraulic servo valve is taken as an example to analyze the simplified principle and condition of the mathematical model of the control system, and the corresponding conclusions are drawn. In this paper, On the basis of which, a digital computer program and a SHARPEL pocket calculator program have been developed in combination with the development of the 2QDY-6 electro-hydraulic servo valve.Through the computer aided calculation, the feedback lever The influence of stiffness K_f, air gap g and amplifier internal resistance rp on the frequency characteristics provides the basis for some parameters’ budget.