为了验证以反作用轮为执行机构实现姿态机动，完成微纳卫星对运动目标跟踪的可行性，设计了基于单轴气浮台的微纳卫星光电跟踪物理仿真系统。首先，为提高物理仿真系统的性能，分别对反作用轮和气浮台的干扰力矩进行分析; 其次，针对反作用轮存在的干扰力矩和加、减速时间常数不对称的问题，设计了增益调度和力矩补偿相结合的反作用轮控制策略; 再其次，采用双闭环-速度前馈的控制结构，完成了微纳卫星光电跟踪物理仿真系统的控制系统的设计; 最后，为了验证仿真系统的跟踪性能，对作正弦运动的一维靶标进行跟踪。实验表明: 对于跟踪最大速度为9 (°)/s、最大角加速度为4.5 (°)/s2的正弦运动靶标，物理仿真平台的跟踪精度达到0.4°，从而说明以反作用轮为执行机构实现姿态机动，微纳卫星可以实现对运动目标的跟踪。

To verify the feasibility of tracking moving targets of micro-nano satellite using reaction wheel as actuator to adjust attitude, the physical simulation system of micro-nano satellite photoelectric tracking based on single-axis air-bearing platform was designed. Firstly, in order to improve the accuracy of physical simulation system, the disturbance torques of reaction wheel and air-bearing platform were analyzed separately; Secondly, aiming at disturbance torques and asymmetry of acceleration and deceleration time constants of reaction wheel itself, a flywheel control strategy combining gain scheduling and moment compensation was designed; Then, the tracking control system of analog micro-nano satellite was designed by using double closed-loop with velocity-forward control structure; Finally, in order to test the tracking performance of the simulation system, the tracking experiment of one-dimensional target with sinusoidal motion was completed. The experiment shows that the tracking accuracy reaches 0.4° for sinusoidal moving targets with maximum velocity of 9 (°)/s and maximum acceleration of 4.5 (°)/s2, which demonstrates that the micro-nano satellite using reaction wheel as actuator can track moving targets by attitude maneuver.