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快反镜是光电跟踪系统中精跟踪系统的核心部件。精密光电跟踪系统要求快反镜闭环控制系统既具有高的扰动抑制能力又具有快的响应速度和高的跟踪精度。运用理论建模方法得出了快反镜的四阶模型结构,通过实验建模方法建立了仿真中用到的快反镜的三阶模型。在拟定快反镜为三阶模型后,选择了响应速度很快,响应精度很高的三阶理想模型作为模型参考自适应控制算法中的参考模型。在快反镜之前叠加正弦信号模拟干扰,通过大量仿真研究,说明用这种自适应控制算法能有效地抑制干扰,使快反镜输出很好地跟随参考模型。由于参考模型响应速度很快,响应精度很高,所以基于该自适应控制算法的快反镜控制系统具有很快的响应速度与很高的响应精度。
Fast reflex mirror photoelectric tracking system in the fine tracking system’s core components. Precision photoelectric tracking system requires fast reflector closed-loop control system with high disturbance rejection and fast response speed and high tracking accuracy. Using the method of theoretical modeling, the fourth-order model of the fast-reflex mirror is obtained. The third-order model of the fast-reflex mirror used in the simulation is established by the experimental modeling method. After the third-order model was constructed, the third-order ideal model with high response speed and high response accuracy was selected as the reference model in the model reference adaptive control algorithm. In front of the fast reflex mirror superimposed sinusoidal signal simulation interference, through a large number of simulation studies show that the use of this adaptive control algorithm can effectively suppress the interference, the fast reflex mirror output to follow the reference model. Due to the fast response speed and high response accuracy of the reference model, the fast-response mirror control system based on the adaptive control algorithm has fast response speed and high response accuracy.