Figure 18
From: Robust post-processing time frequency technology and its application to mechanical fault diagnosis

Renyi Entropy, mixed \(MSE{\text{s}}\) of IF and \(MSNR\)—output comparisons of of IF estimation of outer race DE fault signals employing FSTFT, FSST, FSET, FSSET, FSOSET, the 1st iteration FMSST and the 8th iteration FMSST methods under different \(MSNR\) (\(\alpha = 1.0\)). (a) Renyi Entropy; (b) Mixed \(MSE{\text{s}}\) of IF; (c) \(MSNR\)—output.