考虑到复合多尺度排列熵是多尺度排列熵的改进，且复合多尺度排列熵主要依赖

Considering that the compound multi-scale permutation entropy is an improvement of the multi-scale permutation entropy, and the compound multi-scale permutation entropy mainly depends on the calculation of the multi-scale permutation entropy, according to the literature, this paper sets the delay time to N = 1024, for m = 4- 7. The scale factor is s = 20, and the vibration signals of 4 different working conditions are respectively VMD decomposed to obtain 7 BLIMF. In FIG. 7, BLIMF1 is used to calculate different m separately, and the average value is taken 10 times. The change trend of scale factor s with CMPE is shown in Figure 6.

Considering that composite multi-scale arrangement entropy is an improvement of multi-scale arrangement entropy, and that composite multi-scale arrangement entropy mainly depends on the calculation of multi-scale arrangement entropy, according to the literature, this paper set the delay time to , N-1024, m-4-7, scale factor of s-20, VMD decomposition of the vibration signals of 4 different operating conditions, and obtained 7 IMF, and blBl 1 10 times in Figure 7 using BL1 to calculate the different m. Scale factor s changes with CMPE as shown in Figure 6.

Considering that the composite multiscale arrangement entropy is an improvement of the multiscale arrangement entropy, and the composite multiscale arrangement entropy mainly depends on the calculation of the multiscale arrangement entropy, according to the literature, this paper sets the delay time as, n = 1024, M = 4-7, scale factor as s = 20, VMD decomposition is carried out for four vibration signals under different working conditions, and seven blimf are obtained, In Figure 7, calculate different m with blimf1, and take the average value of 10 times. The change trend of scale factor s with cmpe is shown in Figure 6.<br>