H/sub ∞/-optimal fault detection in a DC motor control loop

Induction Drive Motor's Fault Diagnosis Research with Application

“…Proceed motor's online fault diagnose mechanism research, give back can promote electrical machine systematic debug and monitor and control technical development, Much good field control electrical machine's normally execution [1] 。 At present, not a few domestic and abroad scholars already proceed plenty of research on electromotor breakdown Diagnose means chief have under several kind of:Base on parse model means is in need of establishing general work condition quantity under normal situation (stator voltage, current, energizing voltage, current, deserving, have not achievements' power, empty carry characteristic curve) with relational model between energizing current. Means validity consist in right establish electrical machine de mechanism mathematic model, because affecting factor complex, Difficult compare big [2,3] .Base on oscillatory means, this' a kind of means is take advantage of vibration transducer come to bearing of motor or machine de oscillation proceeding monitor. Vibration transducer's outcoming signal by signal disposal (many for spectral analysis) behind, With already know de breakdown's characteristic frequency compare with compare, Thus look for breakdown's nature and faulty part.…”

“…Base on parse model means is in need of establishing general work condition quantity under normal situation (stator voltage, current, energizing voltage, current, deserving, have not achievements' power, empty carry characteristic curve) with relational model between energizing current. Means validity consist in right establish electrical machine de mechanism mathematic model, because affecting factor complex, Difficult compare big [2,3] .…”