另外，根据日常使用经验，针对控制系统误差进行分析，有利于制造商改进控制系统，提高控制系统精度。
In addition, according to the usual using experience, the author analyzes the control system error and helps manufacturer improving it, increases the control system precision.
将重心的实际位置与理论位置相减，得到偏差量，将此偏差量消除系统误差，传给望远镜控制系统。
The error between the actual position and the theoretic position will be gotten and feed back the control computer.
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