Numerical simulations were used for empirically assessing the relationship of sampling frequency and error, then pointed out that more extremum should be sampled to minish the error of the method.

• 通过仿真试验研究了采样频率和EMD分解误差的关系，指出为了减小EMD分解的误差，在采样时应尽可能获取信号的所有极值点；