Table 3.

Comparison of MSE of MBA-BPNN and other PHM models.

Fault Type	MBA-BPNN	BA-BPNN	BPNN	GA-BPNN	PSO-BPNN
MSE_Train Sample	0.0054	0.0092	0.0330	0.0196	0.0124
MSE_Test Sample	0.0190	0.0287	0.1571	0.0378	0.0484