英语语法分析

The system mainly consists of 21bit all quantity encoder feedback, digital PID computation and DC servo mechanism.

该系统主要由21位全量编码反馈、数字PID运算和直流伺服机构组成。

According to the structure of servo mechanism on HD2se-ries pump, their functions have been analyzed. The structure and control process of constant power valve are mainly discussed.

根据HD 2系列泵伺服机构的组成，分析了它们各自在HD 2系列泵中所起的作用，着重讨论了恒功率阀的结构和控制过程。

The parameter identification of joining stiffness of rudder hydraulic servo mechanism can be done by using the direct method of characteristic equation anti problem.

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。