Engineering HDR Seminar Series 19, 2012: Design of Piecewise Linear Excitation Signal for Frequency Response Function Measurement

Mr Ong Tat Chern, PSCT postgraduate student

Date: 2012-09-28
Time: 15:00 to 16:00
Venue: Engineering meeting room 1, 5-4-22


In the application of system identification in frequency domain, multisine signal is often used as excitation to measure the frequency response function of the system-under-test. Besides giving the advantage of multi-frequencies identification, the use of multisine signals provides additional information in detection, characterization and quantification of system nonlinearities. However in certain engineering applications, the restriction of input does not allow the use of multisine signals, or the signal transducers are incapable to generate good quality multisine signals, hence limiting the implementation of nonlinearity detection framework. Therefore, the research aims to study the potential of piecewise linear signals to replace the use of multisine signals in nonlinearity detection, and consequently develop a new class of piecewise linear signals to be implemented in the existing framework.

About the Speaker

Ong Tat Chern graduated from Monash University Sunway Campus with Bachelor of Engineering in Electrical and Computer Systems in year 2010. He joined Monash University for postgraduate studies in year 2011 under the supervision of Dr. Kuang Ye Chow and Dr. Melanie Ooi. His research in Monash University is on the system identification in frequency domain for nonlinear systems. The present study aims to develop excitation signals which is best suited for the application of nonlinearity detection.