Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0009-2509(97)00413-2
Title: An on-line monitoring procedure for 2 x 2 and 3 x 3 full multivariable control systems
Authors: Ju, J. 
Chiu, M.-S. 
Keywords: Full multivariable controller
Maximum closed-loop log modulus
Monitoring procedure
PI controller
Relay feedback
Robustness
Issue Date: 3-Mar-1998
Source: Ju, J., Chiu, M.-S. (1998-03-03). An on-line monitoring procedure for 2 x 2 and 3 x 3 full multivariable control systems. Chemical Engineering Science 53 (6) : 1277-1293. ScholarBank@NUS Repository. https://doi.org/10.1016/S0009-2509(97)00413-2
Abstract: A monitoring procedure is proposed to assist engineers in deciding whether a redesign of the controller is necessary. The maximum closed-loop log modulus, L(c,max), considered because it measures the robustness of the control systems and thereby can indicate the appropriateness of controller design with respect to the current operating condition. The proposed method extends previous results on monitoring L(c,max) for SISO control systems and multiloop control systems to 2 x 2 and 3 x 3 full multivariable control systems. The proposed monitoring procedure identifies L(c, max) on-line without requiring a priori information of process conditions. This procedure is applied to both linear and nonlinear systems. The results show that the proposed method is efficient and accurate in on-line identification of L(c, max).
Source Title: Chemical Engineering Science
URI: http://scholarbank.nus.edu.sg/handle/10635/67363
ISSN: 00092509
DOI: 10.1016/S0009-2509(97)00413-2
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