ENGINEERING HDR SEMINAR SERIES (53/2013) : Development of Common Observer Schemes using Sliding Mode Observers for Robust State Estimation and Fault Detection and Isolation

Mr. Ng Jiunn Yea , postgraduate student from School of Engineering, Monash University Sunway Campus

Date: 2013-11-25
Time: 10:00 to 11:00
Venue: Engineering Meeting Room 1, 5-4-22


In controlling dynamic engineering systems for optimal performance, the estimates of states are very useful as direct measurements of those states are impractical or at times may be impossible. The reasons for this impracticability are due to high cost of sensors and sensors may also suffer from inherent error such as noise. In addition, the physical surroundings may not event permit the installation of a sensor. An observer provides a solution as it uses the measured outputs and inputs of a system, together with a dynamic mathematical model of the system to estimate the states. However, the mathematical model is usually a representation of the system at only a certain operating point; at a different operating point the mathematical model changes and could cause the observer to give an inaccurate state estimation, or even worse raise a false alarm during a fault-free situation, or hide the effect of the fault during a faulty situation. An interesting solution to these problems is the common observer, which essentially is a bank of observers that can provide an accurate state estimation for various mathematical models. Preliminary research includes the analysis of a common observer scheme in the literature, as well as the investigation of its existence conditions. This presentation is in conjunction with the Mid-Candidature-Review of the PhD studies of the presenter.


For further information, kindly click here to visit the School website.


About the Speaker

 Mr. Ng Jiunn Yea graduated with Bachelor of Engineering (Mechatronics) with Honours from Monash University in 2009. He joined Monash University for postgraduate studies in 2011 under the supervision of A/Prof. Edwin Tan Chee Pin.