On the centrality of disturbance rejection in automatic control
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TLDR
A novel, unifying concept of disturbance rejector is proposed to compliment the traditional notion of controller, leading to a Copernican moment where the model-centric design philosophy is replaced by the one that is control-centric in the following sense.Abstract:
In this paper, it is shown that the problem of automatic control is, in essence, that of disturbance rejection, with the notion of disturbance generalized to symbolize the uncertainties, both internal and external to the plant. A novel, unifying concept of disturbance rejector is proposed to compliment the traditional notion of controller. The new controller–rejector pair is shown to be a powerful organizing principle in the realm of automatic control, leading to a Copernican moment where the model-centric design philosophy is replaced by the one that is control–centric in the following sense: the controller is designed for a canonical model and is fixed; the difference between the plant and the canonical model is deemed as disturbance and rejected.read more
Citations
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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.
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Survey on methods of increasing the efficiency of extended state disturbance observers.
Rafal Madonski,Przemyslaw Herman +1 more
TL;DR: This survey presents various methods of improving the overall estimation quality in the class of extended state observers (ESO), which estimate not only the conventional states of the system, but the acting disturbance as well.
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Data-driven oxygen excess ratio control for proton exchange membrane fuel cell
TL;DR: In this article, an underlying difficulty for OER control is addressed by pointing out the overshoot response, and active disturbance rejection control is employed to handle the various difficulties in a data-driven manner.
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On Tuning and Practical Implementation of Active Disturbance Rejection Controller: A Case Study from a Regenerative Heater in a 1000 MW Power Plant
TL;DR: An automatic tuning tool, based on robust loop shaping, is developed to obtain a group of reasonable parameters that can guarantee the system safety when ADRC is put in loop and a quantitative retuning strategy is introduced to avoid the proportional kick in set-point tracking.
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Active Disturbance Rejection Control Approach to Output-Feedback Stabilization of a Class of Uncertain Nonlinear Systems Subject to Stochastic Disturbance
TL;DR: The active disturbance rejection control is considered as a powerful control strategy in dealing with large uncertainty covering unknown dynamics, external disturbance, and unknown part in coefficient of the control to uncertain nonlinear systems subject to external bounded stochastic disturbance described by an uncertain Stochastic differential equation driven by white noise.
References
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From PID to Active Disturbance Rejection Control
TL;DR: Active disturbance rejection control is proposed, which is motivated by the ever increasing demands from industry that requires the control technology to move beyond PID, and may very well break the hold of classical PID and enter a new era of innovations.
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Model-free control
Michel Fliess,Cédric Join +1 more
TL;DR: Model-free control and the corresponding ‘intelligent’ PID controllers (iPIDs), which already had many successful concrete applications, are presented here for the first time in an unified manner, where the new advances are taken into account.
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Microprocessor-Controlled DC Motor for Load-Insensitive Position Servo System
TL;DR: The conventional proportional P controller has been often used as the position controller of the dc servo motor when the unknown and inaccessible load torque is imposed on the dc Servo motor.
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Generalized controller canonical form for linear and nonlinear dynamics
TL;DR: In this article, a generalized controller canonical form for linear and nonlinear dynamics is proposed, which is obtained using the theorem of the primitive element from differential algebra and does not apply to multivariable constant linear systems.