The tests results show that the controller is the effective control method for the variable pump & valve controlled system.
试验研究结果表明，前馈自适应控制是实现变量泵源阀控系统高精度跟踪控制的有效方法。
Because of the simple structure and small spatial volume, valve controlled asymmetric cylinder is widely applied in hydraulic servo system.
阀控非对称缸由于结构简单、空间体积小，广泛地应用于液压伺服系统中。
Introduces the working principle and the method of the selection about the type ZY47 Valve controlled by the pressure difference, and analyses its adaption condition.
介绍了ZY 47型自力式压差控制阀的工作原理和选型方法，分析了不同被控环路系统的适用条件。
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