本文介绍了一种步进电机的锁相控制系统，为实现这一系统提出了步进电机速度误差阻尼方法，并给出了便于工程使用的设计方法。
A step motor phase locking control system and it's velocity error damping method is presented in this paper. A convenient method for engineering design is also given.
根据指数波试验和计算，文中给出了XZF-900精密电阻分压器和ZRF-1200低阻尼电容分压器的冲击测量误差。
The impulse measurement errors of the XZF—900 precision resistor divider and the ZRF—1200 low damped capacitor divider are given from exponential wave tests and calculations.
采用非量纲分析法，验证了统一模型的误差仅依赖于阻尼系数。
It is demonstrated that the errors of the unified valve model are dependent on the damping coefficient alone using a non-dimensional approach.
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