Fault Diagnosis about Cylinder Gas Tightness Based on WA and RBFN
Rui Ma · Transactions of Csice · 2002
In this paper a new experiment method for analyzing cylinder gas tightness from the waveform of the storage battery voltage,which was collected when engine was driven,was discussed.The signal tendency and noise were canceled based on wavelet analysis.And 7 fault symptom parameters including two new parameters (period extension and main frequency delay) were put forward.The Radial Basis Function Network(RBFN)was trained by putting these symptom parameters in and this network could distinguish the fault modes preferably.Then a system scheme was formed to diagnose the cylinder compression ratio fault.