针对光电系统跟踪目标时由复合控制模式向反馈控制模式切换过程中出现的误差变大现象,从控制原理、仿真及实验方面进行分析,提出采用模式切换时上一时刻复合控制所使用的一阶微分数据,对切换后的反馈控制在速度环路进行常值补偿,使控制模式切换引起的误差显著减小,同时确保跟踪系统在采用该补偿后不增大反馈控制的稳态误差,并对此方法进行了仿真,最后针对某型光电跟踪仪进行航路实验,结果表明该方法行之有效。

Control theory, simulation and experiment of EO system show that the tracking errors increase suddenly when the optoelectronic tracking platform switches the control mode from compound control to feedback control. To solve the problem, a constant compensation method was put forward. The method compensated the errors caused by the control mode switching and made the steady-state error state not increase after compensation, it decreased the tracking errors evidently. The simulation and experiment data prove the method is feasible.