A novel working angle recognition system of screw compressor valve using wavelets and Probabilistic Neural Networks for engineering application is proposed. According to tested valve vibration signal energy changing characteristic under different working angle of valve flake, the paper obtains vibration signal power distribution on different scales using continuous wavelet transform, that is, scale-wavelet power spectrum of vibration signal. Then, according to different wavelet power distribution on scales, a Probabilistic Neural Networks model is applied to classify corresponding working angle of valve flake using scale-wavelet power spectrum as feature parameters. The experimental results show that the methods of using continuous wavelets transform and extracting each scale-wavelet power spectrum as feature vectors can depict vibration signal changing rules along with valve flake angle of compressor changing correctly. The Probabilistic Neural Networks model applied can recognize different working angles and realize monitoring of valve working condition well. The methods provide a new effective tool for screw compressor valve states monitoring and fault diagnosis.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Working Angle Recognition of Screw Compressor Valve


    Contributors:
    Niu, Qun-Feng (author) / Wang, Li (author)


    Publication date :

    2008-05-01


    Size :

    439270 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    CONTROL VALVE FOR AN OIL-INJECTED SCREW-TYPE COMPRESSOR

    KOECK ENGELBERT / HOFSTETTER MICHAEL | European Patent Office | 2018

    Free access

    CONTROL VALVE FOR SCREW-ROTOR COMPRESSOR WITH OIL INJECTION

    KEK EHNGEL BERT / KHOFSHTETTER MIKHAEHL | European Patent Office | 2015

    Free access

    Control valve for an oil-injected screw-type compressor

    KÖCK ENGELBERT / HOFSTETTER MICHAEL | European Patent Office | 2016

    Free access

    COMPRESSOR UNIT SCREW COMPRESSOR AND OPERATING METHOD OF COMPRESSOR UNIT

    UEDA TATSUKI / YAMADA TAKASHI | European Patent Office | 2022

    Free access

    Geometrical Characteristics of Slide Valve Capacity Control Mechanism in Single Screw Refrigeration Compressor

    Wang, Z. / Liu, F. / Cheng, J. et al. | British Library Online Contents | 2014