This paper is concerned with the actuator fault detection problem for a process control experimental system using combined observers. That is, a fault detection system is designed for a water level control valve of a process experimental system by using a disturbance observer. Moreover, for the process experimental system with uncertainties, an adaptive observer using an unknown parameter identification mechanism combining with a disturbance observer is proposed to deal with the actuator fault detection problem. The effectiveness of the proposed method is confirmed by experimental results.
AlcortaE. G.FrankP. M.Deterministic nonlinear observer-based approaches to fault diagnosis, a survey. Control Engng Pract., 1997, 5(2), 663–700.
4.
IsermannR.Model-based fault-detection and diagnosis-status and applications. Ann. Rep. Control, 2005, 29, 71–85.
5.
GaoZ.WangH.Descriptor observer approaches for multivariable systems with measurement and application in fault detection and diagnosis. Syst. Control Lett., 2006, 55, 304–313.
6.
ChenJ.PattonR.ZhangH.Design of unknown input observer and robust fault detection filters. Int. J. Control, 1996, 63(1), 85–105.
7.
ViswanadhamN.SrichanderR.Fault detection using unknown-input observers. Control Theor. Adv. Technol., 1987, 3(2), 91–101.
8.
DuanG. R.WuA. G.Robust fault detection in linear systems based on full-order state observers. In Proceedings of the 23rd Chinese Control Conference, 2004, pp. 993–997.
9.
EdwardsC.SpurgeonS.PattonR.Sliding mode observers for fault detection and isolation. Automatica, 2000, 36(4), 541–553.
10.
EdwardsC.TanC. P.Robust fault detection using sliding mode observers. In Advances in variable structure and sliding mode control, Lecture Notes in Control and Information Sciences, Vol. 334, 2006, 293–312.
11.
InoueA.DengM.YoshinagaS.OkazakiS.Fault detection to a process control experimental system by using an adaptive observer. Trans. Japan Soc. Instrum. Control Engineers (SICE), 2007, 43, 621–623(in Japanese).
12.
InoueA.DengM.OgitaT.YoshinagaS.Adaptive observer-based fault detection to a process control experimental system. In Advances in dynamics, instrumentation and control, 2007, pp. 175–181 (World Scientific, Singapore).
13.
DengM.InoueA.EdahiroK.Fault detection in a thermal process control system with input constraints using robust right coprime factorization approach. Proc. IMechE, Part I: J. Systems and Control Engineering, 2007, 221(6), 819–831.
