本文对飞行模拟器运动系统的静压伺服作动器进行了分析，介绍了系统主要元件的结构原理。
This paper analyzes hydrostatic servo actuator in motion system for flight simulator, and introduces structural principle of main component of the system.
通过与模拟交流伺服系统的比较，说明了全数字交流伺服系统可编程能力强、系统稳定性好、系统性能提高等特点。
By comparison with analogue AC servo system, some remarkable features of digital AC servo system, such op programming function, system stability and system performance are described.
第四章是伺服模拟卡的电路与逻辑设计。
The forth chapter is the circuitry and logic design of Servo Simulator Board.
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