零相移FIR滤波器在重复控制器中的应用

Application of Repetitive Control Strategy With Zero-phase Shift FIR Filter

重复控制(RC)策略是一种有效的高频信号处理方法,能显著提高被控对象跟踪精度,被广泛应用于高精度电机控制、风力发电、光伏发电和电能质量控制等领域,RC不仅能实现控制指令的高精度跟踪,而且能最大限度地抑制外部干扰。然而,RC技术存在跟踪精度和稳定裕度的平衡问题。此处引入零相移FIR滤波器到重复控制器结构中,并根据RC参数的特性,提出了一种零相移FIR滤波器的参数设计方法。最后,通过实验验证了上述设计方法的有效性。

Repetitive control(RC) strategy is an effective method to improve tracking precision when dealing with high frequency signal,it’s wildly applied in high-precision motor control,wind turbine control,photovoltaic power generation and power quality control,etc.RC can not only achieve high-accuracy tracking of control instruction,but also minimize the influence of external disturbances.However,RC control exists the balance problem of tracking precision and stability margin.A zero-phase shift FIR filter to deal with the problem mentioned above,then,a set of the design method is also proposed.Finally,experiment is implemented to verify effectiveness of the design method.