Research On Sensor Fault Diagnosis

The paper first summarizes the phylogeny of the sensor fault diagnosis, and then introduces the academic achievements during recent years. Emphasizes on the two methods of sensor fault diagnosis: the method based on observer and the method bases on NN. By using them realizes the sensor fault diagnosis of power plant main-stream temperature system. On the basis of the study a new means is presented--estimation of the unknown inputs, this means can enhance the robustness of the method based on observer. Through simulation the means is proved to be effective. At last discusses the puzzles awaited to be solved and the developing direction of sensor fault diagnosis.Chang Hong(Control Theory and Control Engineering)Directed by Prof. Tian Pei...