Title :
Fault diagnosis of vibration control system for flexible structures (Simultaneous fault detection of actuators and sensors by fuzzy reasoning)
Author :
Isogai, Masahiro ; Fukuda, Toshio ; Arai, Fumihito
Author_Institution :
Aichi Univ. of Technol., Japan
Abstract :
The paper proposes a method for simultaneous actuator and sensor fault diagnosis for a vibration control system for flexible structures, using fuzzy reasoning. In a control system, actuators and sensors are connected serially. Therefore it is not easy to detect which components (either or both of them) have failed by measuring only one sensor´s output. In the proposed diagnosis method, firstly, the sensor´s faulty conditions are estimated by a diagnosis test and respective fuzzy reasoning procedure. Secondly, the actuators´ faulty conditions are estimated by fuzzy reasoning under the assumption of normal condition for the sensors. The effectiveness of the proposed method has been shown on a simulation example of a vibration control system for a 3-link flexible structure.
Keywords :
fault diagnosis; flexible structures; fuzzy set theory; inference mechanisms; intelligent control; vibration control; 3-link flexible structure; actuators; diagnosis test; fault diagnosis; faulty conditions; flexible structures; fuzzy reasoning; sensors; simultaneous actuator/sensor fault diagnosis; simultaneous fault detection; vibration control system; Actuators; Control systems; Fault detection; Fault diagnosis; Flexible structures; Fuzzy reasoning; Sensor systems; Servomechanisms; System testing; Vibration control;
Conference_Titel :
SICE 2002. Proceedings of the 41st SICE Annual Conference
Print_ISBN :
0-7803-7631-5
DOI :
10.1109/SICE.2002.1195534
