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Table 3 Estimation results of the proposed detection method using different optimization algorithms

From: Broken Rotor Bar Fault Detection of Induction Motors Using a Joint Algorithm of Trust Region and Modified Bare-bones Particle Swarm Optimization

Parameter True value Average estimation value based on BPSO Average estimation value based on TR-MBPSO
Amplitude A1 (A) 10 10.0722 9.9998
Frequency f1 (Hz) 50 50.0035 50.0000
Phase φ1 (rad) − π/4 − 0.7971 − 0.7854
Amplitude A2 (A) 0.2 0.2176 0.2002
Frequency 2sf1 (Hz) 0.4 0.4849 0.3997
Phase φ2 (rad) π/2 1.8847 1.5683
Amplitude A3 (A) 0.2 0.1927 0.1999
Phase φ3 (rad) π 2.4169 3.1416