Analog Circuit Fault Diagnosis Based on Volterra Series

The Volterra series are a functional series.Its kernals both in time domain and frequency domain have definite physical significance and are independent with the system input. Thus the kernals can reflect intrinsic nature of the system. Thus the Volterra series can be used to analyze the nonlinear analog circuit.The fault feature can be extracted based on the direct analysis on the frequency response of nonlinear analog circuit so as to detect the fault in nonlinear analog circuit.