Please use this identifier to cite or link to this item:
Title: Robust self-tuning PID controller for nonlinear systems
Authors: Tan, K.K. 
Huang, S. 
Ferdous, R.
Issue Date: 2001
Citation: Tan, K.K.,Huang, S.,Ferdous, R. (2001). Robust self-tuning PID controller for nonlinear systems. IECON Proceedings (Industrial Electronics Conference) 3 : 758-763. ScholarBank@NUS Repository.
Abstract: In this paper, we propose a robust self-tuning PID controller suitable for nonlinear systems. The control system employs a preload relay (P_Relay) in series with a PID controller. The P_Relay ensures a high gain to yield a robust performance. However, it also incurs a chattering phenomenon. In this paper, instead of viewing the chattering as an undesirable yet inevitable feature, we use it as a naturally occurring signal for tuning and re-tuning the PID controller as the operating regime digresses. No other explicit input signal is required. Once the PID controller is tuned for a particular operating point, the relay may be disabled and chattering ceases correspondingly. However, it is invoked when there is a change is setpoint to another operating regime. In this way, the approach is also applicable to time-varying systems as the PID tuning can be continuous, based on the latest set of chattering characteristics. Simulation results for the level control of fluid in a spherical tank using the scheme are also presented.
Source Title: IECON Proceedings (Industrial Electronics Conference)
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

checked on Dec 29, 2019

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.