Study on the Method for Fault Detection and Isolation Based on Hybrid Diagnostic Inference

摘要

EMAT is short for Electro-Magnetic Acoustic Trans-ducer. It’s a new device for acoustic emission and receiv-ing. It has many advantages such as noncontact the ma-terial being tested directly in process of testing. It doesn’tneed couple agent, and has high speed testing and goodrepeatability, and performs well at high temperature, andis suitable to test material with special shape, and so on.This paper describes a simulation based on the electromagnetic ultrasonic pulse discharge experi-ment. Selecting each experimental parameter by the way of theory and Pspice simulate excitation signal. Fi-nally, simulation results obtained are consistent with the theoretical conclusions.