Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/70210
Title: Estimation of minimum conditions for forced oscillations in relay feedback systems
Authors: Lim, L.H.
Loh, A.P. 
Fu, J. 
Keywords: Forced and subharmonic oscillations
Relay feedback systems
Issue Date: 2005
Source: Lim, L.H.,Loh, A.P.,Fu, J. (2005). Estimation of minimum conditions for forced oscillations in relay feedback systems. Proceedings of the 5th International Conference on Control and Automation, ICCA'05 : 1262-1267. ScholarBank@NUS Repository.
Abstract: This paper examines the behaviour of a single loop relay feedback system (RFS) in the presence of an external forcing sinusoid. It is well known that such a closed loop system sometimes undergo a forced oscillation (FO) phenomenon while at other times, subharmonic oscillations (SO) may be observed. This paper examines the conditions under which these can occur. It was found that for either FO or SO to occur, the external forcing signal must satisfy a certain minimum amplitude. Whether a FO or SO occurs, the minimum amplitude of the external forcing signal can be determined accurately using a graphical approach and a numerical method. Simulation studies are presented to illustrate the results. © 2005 IEEE.
Source Title: Proceedings of the 5th International Conference on Control and Automation, ICCA'05
URI: http://scholarbank.nus.edu.sg/handle/10635/70210
ISBN: 0780391381
Appears in Collections:Staff Publications

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