阐述液压桩机的控制系统；建立液压伺服机构的微分方程和导出传递函数。
This paper first illustrates the control system of hydraulic pile divers, establishes the differential equation of the hydraulic servo and determines the transfer function.
应用特征方程反问题的直接方法对舵面-液压伺服机构连接刚度参数进行了辨识。
The parameter identification of joining stiffness of rudder hydraulic servo mechanism can be done by using the direct method of characteristic equation anti problem.
结果表明，该方法简便且精度高，为舵面-液压伺服机构的动力学建模和分析提供了有效方法。
The results show that the method is simple and precise, and it provides an effective way to model and analyze dynamics of rudder hydraulic servo mechanism.
采煤机液压牵引部的性能取决于它的伺服机构的性能。
The performance of a hydraulic winch of shearer depends on that of its servo-mechanism.
采煤机液压牵引部的性能取决于它的伺服机构的性能。
The performance of a hydraulic winch of shearer depends on that of its servo-mechanism.
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