Journal ArticleDOI
A self-tuning robust controller
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TLDR
The self-tuning robust controller described in this paper has an error-driven, “robust” structure which guarantees asymptotic regulation and tracking in the presence of finite parameter perturbations and also incorporates an internal model of the external disturbances and set points.About:
This article is published in Automatica.The article was published on 1986-09-01. It has received 14 citations till now. The article focuses on the topics: Open-loop controller & Robust control.read more
Citations
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Journal ArticleDOI
Robustness of adaptive controllers—a survey
Romeo Ortega,Yu Tang +1 more
TL;DR: The survey is divided into three parts and treats robustness of standard model reference controllers with respect to reduced order modeling and bounded disturbances, and the results pertaining to other types of modeling uncertainties, namely: time variations, mismatched delay and nonlinearities.
Journal ArticleDOI
Multivariable adaptive control without a prior knowledge of the delay matrix
TL;DR: In this paper, the structure and role of the time-delay matrix in discrete-time multivariable processes are discussed, and it is shown that a finite-time horizon or multi-step cost function can be minimized subject to a suitable choice of output and control horizons and without prior knowledge of the system delay matrix.
Journal ArticleDOI
Theoretical Results of Robustness of Direct Adaptive Controllers: A Survey
Romeo Ortega,T. Yu +1 more
TL;DR: In this article, the authors survey theoretical results on robustness of direct adaptive control and other types of modeling uncertainties, namely, time-variations, mismatched delay, and nonlinearities.
Book ChapterDOI
Robust control of an evaporator through algebraic Riccati equations and d-k iteration
Javier Jiménez-Cabas,Farid Meléndez-Pertuz,David Ovallos-Gazabon,Jaime Vélez-Zapata,Hermes E. Castellanos,César A. Cárdenas,Joaquín F. Sánchez,Gonzalo Jiménez,César Mora,Fredy A. Sanz,César A. Collazos +10 more
TL;DR: The design of robust control systems for a simple effect evaporation system is presented and some tests carried out in simulation show the potentiality of the control system proposed.
Journal ArticleDOI
A Self-Tuning Controller for Processes with Time-Varying Delay: Application to a Paper Machine Head Box
TL;DR: In this paper, the authors developed a new method to estimate time-varying delay in self-tuning control for paper machine head boxes, which was tested with computer simulation and proved successful.
References
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Book
Adaptive filtering prediction and control
Graham C. Goodwin,Kwai Sang Sin +1 more
TL;DR: This unified survey focuses on linear discrete-time systems and explores the natural extensions to nonlinear systems and summarizes the theoretical and practical aspects of a large class of adaptive algorithms.
Journal ArticleDOI
Paper: The internal model principle of control theory
B. A. Francis,W. M. Wonham +1 more
TL;DR: The Internal Model Principle is extended to weakly nonlinear systems subjected to step disturbances and reference signals and is shown that, in the frequency domain, the purpose of the internal model is to supply closed loop transmission zeros which cancel the unstable poles of the disturbance andreference signals.
Journal ArticleDOI
The robust control of a servomechanism problem for linear time-invariant multivariable systems
TL;DR: In this paper, it was shown that there is a robust controller for a linear, time-invariant, multivariable system (plant) that asymptotic tracking/regulation occurs independent of input disturbances and arbitrary perturbations in the plant parameters of the system.
Journal ArticleDOI
The internal model principle for linear multivariable regulators
Bruce A. Francis,W. M. Wonham +1 more
TL;DR: In this paper, structural stability of linear multivariable regulators is defined and necessary and sufficient structural criteria are obtained for linear multi-variable regulators which retain loop stability and output regulation in the presence of small perturbations, of specified types, in system parameters.
Journal ArticleDOI
Self-tuning controller
David Clarke,Peter J. Gawthrop +1 more
TL;DR: In this paper, a cost function which incorporates system input, output and set-point variations is selected, and a control law for a known system is derived, and the control input is chosen to make the prediction zero.