在变速回转机械信号等转角采样过程中，采样频率随着机械转速的变化而变化，同时，为防止信号频谱混迭，抗频混滤波器的截止频率必须满足采样定理。而对于伪同步信号重采样，由于重采样频率（瞬时转速）和重采样时刻均为连续时变函数，因此，信号的重采样比也应为连续时变函数。本文将探讨重采样滤波器（自适应信号滤波器）的设计问题，并给出信号重采样公式及其数字阶比谱算例。 In the process of corner sampling such as variable speed rotary machinery signal, the sampling frequency changes with the change of mechanical rotation speed. Meanwhile, to prevent aliasing of signal spectrum, the cutoff frequency of anti-frequency mixing filter must meet the sampling theorem. For the resampled pseudo-sync signal, the re-sampling ratio of the signal should be a continuous time-varying function because both the resampling frequency (instantaneous speed) and the re-sampling time are continuous time-varying functions. This article discusses the design of resampling filters (adaptive signal filters) and gives examples of signal resampling and their digital order-ratio spectra.