傅立叶变换光谱仪干涉控制系统的仿真研究

Simulation on Interference Control System in Fourier Transform Spectrograph

在分析了傅立叶变换光谱仪干涉系统的工作原理与应用特点的基础上,提出了一种干涉控制系统的建模仿真新方法。在Saber环境下,利用模型库和MAST语言,建立音圈电机、DSP控制器、激光反馈及PWM驱动等模型,实现了光、机、电一体化的干涉系统控制仿真。系统采用双闭环控制PI调节,实现光程差速度的高稳定性跟踪。同时,针对系统应用环境,进行微振动干扰仿真。仿真结果证明了该建模方法的合理性与有效性,为实际系统的设计与调试提供了方便。

A novel modeling and simulation for the interference control was proposed based on the analysis of the operation principle and application characteristics of the Fourier transform spectrometer. Under the Saber environment, the simulation models of voice coil motor, DSP controller, feedback laser and PWM driver circuit were built by the models and MAST language, and the simulation with opticalelectro-mechanical integration was carded out. In the double closed loop control system, the system tracked the desired optical path difference velocity stably with PI control strategy. Meanwhile, the disturbance caused by micro-vibration was simulated according to its application environment. The simulation results verify the rationality and effectiveness of the model of system. It provides the conveniences of design and debug for the physical system.