Table 3 Time costs of extraction of the unbalance signal.

From: Real-time static unbalance evaluation of the Cardan shaft equipped in high-speed train based on nonzero frequency filter

Method

Time cost (140 km/h)

Time cost (160 km/h)

NZFF

0.0013 s

0.0006 s

DDDR

0.1866 s

0.1836 s

DDDR + SVD

0.1882 s

0.1853 s

EEMD

5.8846 s

6.4442 s

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