快速倾斜镜的建模与模型参考自适应控制技术研究

Research of model and control for fast-steering mirrors

通过实验建模方法建立快速倾斜镜四阶模型,采用routh降阶方法将快速倾斜镜四阶模型降为二阶模型,数学仿真验证了简化模型较好的反映了原系统主要性能。提出的建模方法对快速倾斜镜的准确建模是简便、有效的,为现代控制理论的研究提供了数学基础。在建立二阶模型的基础上,设计了基于李亚普诺夫稳定理论的模型参考自适应控制器,并进行了全系统的计算机仿真。仿真结果表明,针对快速倾斜提出的基于李亚普诺夫稳定理论的模型参考自适应控制器能够减小系统稳态误差、提高系统响应速度。研究结果为倾斜镜的快速控制提供了一种新的思路。

Four-order model of the fast steering mirror is set up used experimental modeling method.The order of the fast steering mirror is reduced to tow-order model by routh approximation,because high order will make controller design complex.Based on Lyapunov stabilization theory,a modeling reference adaptive controller is designed to control the fast steering mirror.Simulation results testified that use modeling reference adaptive controller can minish error and make fast steering mirror track the output of the model more fast.It is a new,convenient and effective method for designing fast-steering mirrors controller.