Whenever the optical fiber positional unit of LAMOST possesses zero position detection system,it will gain the absolute zero point for the position of optical fiber,thus simplified the control system and raised the reliability of the system.

• LAMOST光纤定位单元有了零位检测系统 ,就有了光纤位置的绝对零点 ,从而简化了控制方案 ,提高了系统的可靠性。