Research on Compressed Sensing Method for Engine Vibration Signal
A Compressed Sensing Method for Engine Vibration Signal is proposed to address the issue of large redundant data transmission in current engine vibration signal acquisition.Firstly,the engine vibra-tion signal acquisition platform is used to complete high-speed signal acquisition.Then,the vibration sig-nal is compressed using the Discrete Cosine Transform basis and the Hadamard matrix.Finally,the com-pressed signal is reconstructed using the Orthogonal Matching Pursuit algorithm.The results show that,when compressing the vibration data of a car engine at 2 000 r/min with a sampling frequency of 10 kHz,with a compression ratio of 0.8 and a reconstruction iteration number K of 200,the reconstruction error is 0.030 8.Moreover,the reconstruction accuracy is positively correlated with the compression ratio and the reconstruction iteration number K.This method provides an effective data compression solution for wire-less transmission of engine vibration signals.
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维普
