Seminar

Engineering HDR Seminar Series 25_2013: Control Theory with Emphasis on the Development of Fault Reconstruction Schemes using the Sliding Mode Observer

Mr Jeremy Ooi, Mechatronics Eng postgraduate student


Date: 2013-05-28
Time: 11:00 to 12:00
Venue: Engineering Meeting Room 1, 5-4-22


Abstract

In many practical dynamic systems, some states are not available but yet are required for the design of a controller. An observer can be used to estimate those states based on the known inputs and outputs. However, many systems experience unknown faults which could cause standard observers to give inaccurate estimates. The Sliding Mode Observer (SMO) is a promising solution for its capability to robustly estimate those states despite the fault, and can also achieve fault reconstruction which is useful for prescribing suitable corrective action. The descriptor system (also known as a singular system) is a special class of state-space systems which can be used to represent certain systems that cannot be properly formulated by the normal state-space system. However, the implementation of the SMO for descriptor systems has hardly been researched. This research project seeks to contribute to this area of knowledge and further unfold the potential of SMOs.

About the Speaker

Mr Jeremy Ooi graduated from Monash University with a Bachelor of Engineering degree in the Mechanical discipline in 2010. He returned and enrolled in the Master of Engineering Science (Research) program under the guidance of Associate Professor Edwin Tan Chee Pin and Dr. Ng Kok Yew. He passed his conversion assessment in July 2012 and is now a Ph.D candidate. His research interest is in Control Theory with emphasis on the Development of Fault Reconstruction Schemes using the Sliding Mode Observer.