Journal ArticleDOI
High-gain observers in nonlinear feedback control
Hassan K. Khalil,Laurent Praly +1 more
TLDR
This talk is a brief introduction to high-gain observers in nonlinear feedback control, with emphasis on the peaking phenomenon and the role of control saturation in dealing with it.Abstract:
In this document, we present the main ideas and results concerning high-gain observers and some of their applications in control. The introduction gives a brief history of the topic. Then, a motivating second-order example is used to illustrate the key features of high-gain observers and their use in feedback control. This is followed by a general presentation of high-gain-observer theory in a unified framework that accounts for modeling uncertainty, as well as measurement noise. The paper concludes by discussing the use of high-gain observers in the robust control of minimum-phase nonlinear systems.read more
Citations
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Journal ArticleDOI
Disturbance-Observer-Based Control and Related Methods—An Overview
TL;DR: This survey gives a systematic and comprehensive tutorial and summary on the existing disturbance/uncertainty estimation and attenuation techniques, most notably, DOBC, active disturbance rejection control, disturbance accommodation control, and composite hierarchical antidisturbance control.
Journal ArticleDOI
On the convergence of an extended state observer for nonlinear systems with uncertainty
Bao-Zhu Guo,Zhi-Liang Zhao +1 more
TL;DR: The main idea is to transform the error equation of objective system with its extended state observer into a asymptotical stable system with a small disturbance, for which the effect of total disturbance error is eliminated by the high-gain.
Journal ArticleDOI
A tutorial review of economic model predictive control methods
TL;DR: An overview of the recent results on economic model predictive control (EMPC) is presented and discussed addressing both closed-loop stability and performance for nonlinear systems as discussed by the authors, where a chemical process example is used to provide a demonstration of a few of the various approaches.
Journal ArticleDOI
Global Output Feedback Stabilization of a Class of Nonlinear Systems via Linear Sampled-Data Control
Chunjiang Qian,Haibo Du +1 more
TL;DR: This technical note shows that the same continuous-time system under the same assumption can be globally stabilized by a sampled-data output feedback controller whose observer and control law are discrete-time and linear, and hence can be easily implemented by computers.
Journal ArticleDOI
A Nonlinear High-Gain Observer for Systems With Measurement Noise in a Feedback Control Framework
A. A. Prasov,Hassan K. Khalil +1 more
TL;DR: The nonlinear-gain observer presented in this paper is shown to surpass the system performance achieved when using comparable linear-gain observers, and the proof argues boundedness and ultimate boundedness of the closed-loop system under the proposed output feedback.
References
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Nonlinear Control Systems
Alberto Isidori,M. Thoma,Eduardo D. Sontag,B. W. Dickinson,A. Fettweis,J. L. Massey,J. W. Modestino +6 more
TL;DR: In this paper, a systematic feedback design theory for solving the problems of asymptotic tracking and disturbance rejection for linear distributed parameter systems is presented, which is intended to support the development of flight controllers for increasing the high angle of attack or high agility capabilities of existing and future generations of aircraft.
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Digital control of dynamic systems
TL;DR: This well-respected, market-leading text discusses the use of digital computers in the real-time control of dynamic systems and thoroughly integrates MATLAB statements and problems to offer readers a complete design picture.
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Control of Electrical Drives
TL;DR: In this paper, the authors describe the motion of a drive with Lumped Inertia and two Axes Drive in Polar Coordinates, and the integration of the simplified Equation of Motion.
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Singular perturbation methods in control : analysis and design
TL;DR: This SIAM Classics edition of the 1986 book, the original text is reprinted in its entirety (along with a new preface), providing once again the theoretical foundation for representative control applications.
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A simple observer for nonlinear systems applications to bioreactors
TL;DR: In this paper, an observer for nonlinear systems is constructed under rather general technical assumptions (the fact that some functions are globally Lipschitz) and a tentative application to biological systems is described.
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