FEATURES OF OBTAINING DIGITALLY RECORDED DIESEL VIBRATION SIGNAL DIAGNOSTIC PARAMETERS

Abstract

Operation of diesel power plants can be improved through the organization of in-place diagnostics by vibration parameters. The PURPOSE of the work is to develop a method of digital processing of diesel vibration signals taking into account engine features as an object of analysis. METHODS. The methods of fast Fourier transform, common-mode accumulation and averaging, frequency filtration and phase strobing have been used to identify a useful vibration signal and determine diagnostic parameters. RESULTS. Substantiation is given to the obtained diagnostic parameters of vibration signals generated by diesel dynamic processes. CONCLUSIONS. A method has been developed to obtain diagnostic parameters of diesel digital vibration signals including frequency and amplitude of the peak values of power spectral density that correspond to the dynamic processes in the diesel engine. Conducted test of diesel 2Ch8,5/11 operation assessment has showed a 4% error of the method.