光电跟踪系统力矩波动干扰抑制的研究

光电跟踪系统的力矩波动是影响其跟踪精度的噪声的角度一个关键问题.基于某光电跟踪控制系统动态模型,从抑制噪声的角度分析了加入电流环对抑制力矩波动的影响,同时还分析了系统速度、电流两环闭环带宽与力矩波动抑制之间的关系.分析表明,加入电流环后的光电跟踪系统抑制力矩波动的能力明显增强,同时较高的速度回路带宽有利于抑制力矩波动引起的干扰,且在速度带宽一定的情况下增加电流用环带宽对抑制力矩波动也有一定作用.因此,在设计光电跟踪系统时,在不影响系统稳定性的前提下应选用尽可能大的速度及电流闭环带宽.

On Restraining of Disturbance Caused by Momentum Fluctuation of Optoelectronic Tracking System

Momentum fluctuation of the photoelectronic tracking system is one of the key problems that have effect on tracking accuracy.Based on the dynamical model of a photoelectronic tracking system,the influence of adding the current loop on restraining the momentum fluctuation and the relationship between the bandwidths of the speed loop and the current loop and the reduction of the momentum fluctuation were analyzed.The analytical results showed that the capability of the system added with current loop for restr...