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Chinese Journal of Mechanical Engineering

Table 4 Estimation error comparison 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

BBPSO

TR-MBPSO

Mean error

Max error

Mean error

Max error

Amplitude A1 (A)

7.284 × 10−2

2.385 × 10−1

2.826 × 10−4

7.915 × 10−4

Frequency f1 (Hz)

7.353 × 10−3

2.303 × 10−2

2.097 × 10−5

5.891 × 10−4

Phase φ1 (rad)

2.427 × 10−2

7.638 × 10−2

6.765 × 10−5

1.894 × 10−3

Amplitude A2 (A)

6.675 × 10−2

1.996 × 10−1

2.962 × 10−4

8.240 × 10−3

Frequency 2sf1 (Hz)

9.642 × 10−2

1.987 × 10−1

3.243 × 10−4

9.123 × 10−3

Phase φ2 (rad)

5.703 × 10−1

1.537

2.857 × 10−3

8.045 × 10−2

Amplitude A3 (A)

3.514 × 10−2

9.422 × 10−2

7.625 × 10−6

2.123 × 10−4

Phase φ3 (rad)

7.247 × 10−1

1.890

2.238 × 10−7

3.356 × 10−6

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