基于轨迹跟踪的飞行器大角度姿态机动物理仿真

针对空间飞行器大角度姿态机动控制具有非线性，并要求控制器具有较高的指向精度、姿态稳定度及鲁棒性等特点，应用轨迹跟踪控制算法，设计了比例微分控制器。系统采用DSP作为星载计算机、光纤陀螺作为姿态敏感器、反作用飞轮作为执行机构、系统程序采用C语言编程，利用单轴气浮仿真实验台实现了物理仿真实验。实验结果证明该控制方法能实现飞行器大角度机动控制，控制过程中能准确跟踪预定轨迹，还表现出较好的鲁棒性。

Physical Simulation for Spacecraft Large Angle Maneuver Based on Trajectory Control

Nonlinearity is the feature of the spacecraft with a large angle maneuver control. And the controller is necessarily provided with high pointing precision, satellite attitudes stability, robustness, etc. The author uses the analysis of trajectory control algorithm and designs the PD controller. DSP is adopted as the on-board computer, the fiber-optic gyroscope is used as the attitude sensor and the reaction wheels are used as the actuator. At the same time, in C language environment, the air flotation test table was utilized to accomplish the physical simulation. The result testified that this method can accomplish the controlling of the large angle maneuver; it can also exactly track the trajectory. In addition, the robustness is perfectly shown in the test.