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本文介绍一种跟踪型电液施力系统的优化设计理论。按此理论能设计出跟踪任意非直线型函数曲线的施力系统。例如文中介绍的函数负载模拟器具有6毫秒的过渡时间和135Hz的频带宽度,并能以0.5～0.7％的精度跟踪F_a=303t~4 (N)的力函数。这种优化理论与过去的设计方法不同,它包括研究跟踪问题的“动态消差法”,消除强干扰、交链影响和负载影响的“结构不变性原理”,提高系统快速性的“Ⅱ型伺服系统的优化设计”和选择伺服阀流量及油缸面积最佳参数的“P-Q计算尺”等几个独立的理论部分。
This article presents an optimization theory of tracking electro-hydraulic system. According to this theory can be designed to track any non-linear function curve of the force system. For example, the function load simulator introduced in this paper has a transition time of 6 ms and a frequency bandwidth of 135 Hz, and can track the force function of F_a = 303 t ~ 4 (N) with 0.5 to 0.7% accuracy. This kind of optimization theory is different from the past design methods. It includes “Dynamic Difference Difference Method” to study tracking problem, “Structure Invariance Principle” to eliminate strong interference, link influence and load influence, and “Type II Servo system optimization design ”and choose the best parameters of servo valve flow and cylinder area“ PQ slide rule ”and several independent theoretical parts.