在复合轴伺服系统有关理论和实验的基础上,针对无快速反射镜装置的普通光电跟踪平台机动目标跟踪问题,提出虚拟跟踪平台和虚拟跟踪探测器概念,与实际跟踪平台构成虚拟复合轴伺服系统,其系统结构与复合轴伺服系统完全相同.解决了虚拟跟踪探测器算法、虚拟平台对象特性、系统实现问题,从而将虚拟复合轴伺服系统转化为一种等效复合控制方法.采用传统PI控制器、PI+速度滞后补偿控制器与基于该方法的二维PI控制器分析比较跟踪结果.仿真结果显示二维PI控制大幅提高机动目标的稳态跟踪精度,比PI控制提高16倍以上,比速度滞后补偿提高3.7倍以上;测试结果表明,目标做10°/s,5°/s2等效正弦运动时稳态跟踪精度达到1’. Based on the theories and experiments of the composite axis servo system, this paper proposes the concept of virtual tracking platform and virtual tracking detector for the maneuvering target tracking problem of general optoelectronic tracking platform without quick-acting mirror device. The virtual composite axis servo system , The system structure is exactly the same as that of the composite axis servo system, the algorithm of virtual tracking detector, the object characteristics of the virtual platform and the system implementation are solved, so that the virtual compound axis servo system is transformed into an equivalent compound control method. PI and velocity lag compensation controller are compared with the two-dimensional PI controller based on the method to analyze and compare the tracking results.The simulation results show that the two-dimensional PI control greatly improves the steady-state tracking accuracy of maneuvering target, which is more than 16 times PI control, The hysteresis compensation increased more than 3.7 times. The test results show that the steady-state tracking accuracy reaches 1 ’when the target makes 10 ° / s, 5 ° / s2 equivalent sinusoidal motion.