单探测器型复合轴系统设计中的若干问题

Some problems of the design of compound-axis servomechanism using single detector

针对单探测型复合轴系统设计中存在的控制回路耦合问题,脱靶量解算问题和实时稳定补偿问题,进行了详细分析和推导。首先,给出了系统设计中控制回路耦合的解耦控制方案;其次,推导了探测器获得的脱靶量和快速反射镜(Fast Steering Mirror,FSM)补偿角度之间精确的数学表达式;最后,提出了一种通过实时解算稳定误差,并利用高带宽和高精度的FSM对误差进行高精度补偿的方法。这些方案和表达式可有效地解决设计中的原理性问题和误差解算问题,进而提高系统精度,因此具有相当大的实用性。

The coupling problem of control loop,the problem of miss distance calculation and the problem of real-time stability compensation in the design of compound-axis servomechanism using single detector are analyzed and derived in detail,in this paper.Firstly,the decoupling control scheme of the compound-axis servomechanism using single detector is given.Secondly,the precise mathematical expression between the miss distance obtained by the single detector and the compensation angle of the FSM is deduced.Finally,a method of compensating the error by calculating the stability error in real time and using the high bandwidth and high precision FSM is proposed.These schemes and expressions can effectively solve the principled problems and error solution problems in design,and thus improve the accuracy of the system.