Engineering Research Seminar Series 37, 2011: Disturbance decoupled fault reconstruction using sliding mode observers in cascade

Dr Edwin Tan Chee Pin, School of Engineering, Monash University Sunway Campus

Date: 2011-11-10
Time: 11:00 to 12:00
Venue: Tutorial Room 6-4-01


This paper presents a disturbance decoupled fault reconstruction (DDFR) scheme using cascaded sliding mode observers. The processed signals from an observer are found to be the output of a fictitious system which treats the faults and disturbances as inputs; the `outputs' are then fed into the next observer. This process is repeated until a fictitious system which satisfies the conditions that guarantee DDFR is attained. It is found that the scheme in this paper is less restrictive and that it enables DDFR for a wider class of systems compared to previous work when only one or two observers were used. This paper also presents a systematic routine to check for the feasibility of the scheme and to calculate the required number of observers from the outset and also to design the DDFR scheme. A design example verifies its effectiveness.

About the Speaker

Dr Edwin Tan Chee Pin received the B.Eng. (1st class honours) in 1998, and a Ph.D. in 2002 from Leicester University, U.K. He was then appointed as Lecturer in 2002 at the School of Engineering, Monash University Sunway campus (Malaysia) and subsequently promoted to Senior Lecturer in 2008. His research interests include robust fault reconstruction and sliding mode observers. He has published over 50 internationally peer-reviewed research articles, of which 16 of them are journal papers that are ISI-indexed.