Mathematical Problems in Engineering Research on Composite Fault Separation of Rolling Bearing Based on Functional Mixing Decoupling Model

Table 4

Screening and calculation of the frequency base.

Order	First order, Hz	Second order, Hz	Third order, Hz
Group a	30 44.7 161.9	14.7 60 74.7 89.4 117.2 131.9 191.9 206.6 323.8	15.3 30 44.7 59.4 72.5 87.2 90 101.9 104.7 119.4 134.1 147.2 161.9 176.6 221.9 236.6 241.3 279.1 293.8 353.8 368.5 485.7
Group b	30 141.4 161.1	19.7 60 111.4 131.1 171.4 191.1 282.8 302.5 322.2	10.3 30 49.7 81.4 90 101.1 121.7 141.4 161.1 180.8 201.4 221.1 252.8 272.5 292.2 312.8 332.5 352.2 424.2 443.9 463.6 483.3
Group c	14.6 30 263.7	15.4 29.2 44.6 60 233.7 249.1 278.3 293.7 527.4	0.8 14.6 30 43.8 45.4 59.2 74.6 90 203.7 219.1 234.5 248.3 263.7 279.1 292.9 308.3 323.7 497.4 512.8 542 557.4 791.1