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Based on the principle of acoustic emission, piezoelectric sensor is used in valve leakage signal acquisition. After signal conditioning module for acquisition of the original signal, filtering and amplification would be done. On this basis, using DSP TMS320LF2407 as the core of the micro-control system to achieve signal acquisition, signal filtering and processing functions, as well as communication...
Considering the characteristics of the mechanical equipment and the disadvantages of the existing diagnosis method, a new failure detection method based on pattern recognition is defined. Short time signal and linear distinguish function is adopted. Alone feature is combined for deciding. The method of sensitive and efficient is provided for detecting bearing fault. From the analysis result of the...
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