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机载激光通信的动态视轴稳定是建立激光通信链路的首要前提,传统的粗跟踪控制方法不能克服载体扰动及参数变化对系统的不利影响,影响了视轴稳定精度。根据控制系统的任务,将论域自调整模糊控制与滑模变结构控制的思想相融合,在稳定的误差相平面内构造稳定的滑模面。理论分析和模拟实验结果表明,该方法消除了系统的抖振现象,改善了系统的瞬态性能,对机载通信平台受到的扰动及参数变化具有完全的自适应性。因此自调整模糊变结构控制具有一定鲁棒性,且控制算法简单,可望获得工程应用。
The dynamic boresight stabilization of airborne laser communication is the first prerequisite for establishing a laser communication link. The traditional coarse tracking control method can not overcome the adverse effects of carrier disturbance and parameter changes on the system and affects the accuracy of boresight stabilization. According to the task of the control system, the theory of self-adjusting fuzzy control in the domain and the idea of sliding mode variable structure control are integrated, and a stable sliding mode surface is constructed in a stable error phase plane. Theoretical analysis and simulation results show that this method eliminates the chattering of the system, improves the transient performance of the system, and completely adapts to the disturbance and parameter changes of the airborne communication platform. Therefore, self-adjusting fuzzy variable structure control has a certain robustness, and the control algorithm is simple, is expected to obtain engineering applications.