A Novel Method of Induction Motor Stator Fault Diagnosis

Based on Takagi-Sugeno (T-S) fuzzy observer, present a new type fault diagnosis method for induction motor stator. The residuals using observer estimation output error generated, constitute effective criterion for fault diagnosis. At first, use the Lyapunov stability theory analysis the observer's stabilities, then set the observer pole configuration in the S plane of the designated area, The simulation results show that the method has stronger performance of fault diagnosis, and have good identification performance in full speed range.