Enhanced Orthogonal Matching Pursuit Algorithm and Its Application in Mechanical Equipment Fault Diagnosis

Figure 2

Simulated signal analysis results: Gabor dictionary and Ilfm dictionary are used to match the simulated signal 100 times in the OMP algorithm, the combinations of the QGA and the OMP algorithm, and the combinations of the IQGA and the OMP algorithm: (a) SER is changed with the iterations (the higher value shows the faster decomposition), (b) is changed with the iterations (the closer value to 1 shows the better reconstruction of signal), and (c) MSE is changed with the iterations (the lower value shows the more stability of decomposition and reconstruction).

(a)

(b)

(c)