推导并建立了陀螺系统和伺服执行机构的实物仿真模型，使之与角跟踪电路构成闭合控制回路。
Practical simulating models are deduced and built for the gyro system and the performing setting of the servo system to consist a close-control loop with angle-tracing circuit.
根据阀门的控制方式，可分为伺服型执行机构和开关型执行机构。
According to valve's control mode, it is divided into servo actuator and switch actuator.
在经济型数控车床的进给伺服系统中，广泛地采用步进电机做为执行机构。
The stepping motor is extensively used as the executive mechanism in the feed servo system of economical type NC lathe.
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