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Journal ArticleDOI

Neural networks for nonlinear internal model control

Kenneth J. Hunt, +1 more
- Vol. 138, Iss: 5, pp 431-438
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TLDR
In this paper, a novel technique, directly using artificial neural networks, is proposed for the adaptive control of nonlinear systems, where the ability of neural networks to model arbitrary nonlinear functions and their inverses is exploited.
Abstract
A novel technique, directly using artificial neural networks, is proposed for the adaptive control of nonlinear systems. The ability of neural networks to model arbitrary nonlinear functions and their inverses is exploited. The use of nonlinear function inverses raises questions of the existence of the inverse operators. These are investigated and results are given characterising the invertibility of a class of nonlinear dynamical systems. The control structure used is internal model control. It is used to directly incorporate networks modelling the plant and its inverse within the control strategy. The potential of the proposed method is demonstrated by an example.

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Citations
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Journal ArticleDOI

Automatization of a penicillin production process with soft sensors and an adaptive controller based on neuro fuzzy systems

TL;DR: These modules are evaluated by training the FasArt and FasBack neuro-fuzzy systems first on simulated data and then applying the resulting IMC controllers to a simulated plant, showing that the trend of reference is captured, thus allowing high penicillin production.
Journal ArticleDOI

Inverse fuzzy-process-model based direct adaptive control

TL;DR: The proposed direct adaptive fuzzy logic controller is shown to be capable of handling non-linear and time-varying systems dynamics, providing good overall system performance.
Journal ArticleDOI

Internal Model Control for Shape Memory Alloy Actuators using Fuzzy Based preisach Model

TL;DR: In this paper, an extrema input hystory and a fuzzy inference is utilized to replace the classical Preisach model, which allows to reduce a large amount of experimental parameters and computation time.
Journal ArticleDOI

Nonlinear one-step-ahead control using neural networks: control strategy and stability design

TL;DR: Considering the case of the nonlinear processes with time delay, the extension of the mentioned neural control scheme to d-step-ahead predictive neural control is proposed to compensate the influence of the time-delay.
Journal ArticleDOI

Neural Control of the Movements of a Wheelchair

TL;DR: A new recurrent model is used as the neural network, for which the stability conditions of the complete control system are obtained and various practical tests are carried out, which show the correct performance of the actual system implemented.
References
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Journal ArticleDOI

Approximation by superpositions of a sigmoidal function

TL;DR: It is demonstrated that finite linear combinations of compositions of a fixed, univariate function and a set of affine functionals can uniformly approximate any continuous function ofn real variables with support in the unit hypercube.
Book

Feedback Systems: Input-output Properties

TL;DR: In this paper, the Bellman-Gronwall Lemma has been applied to the small gain theorem in the context of linear systems and convolutional neural networks, and it has been shown that it can be applied to linear systems.
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Robust process control

TL;DR: A state-of-the-art study of computerized control of chemical processes used in industry is presented in this article for chemical engineering and industrial chemistry students involved in learning the micro-macro design of chemical process systems.
Journal ArticleDOI

A multilayered neural network controller

TL;DR: A modified error-back propagation algorithm, based on propagation of the output error through the plant, is introduced, for learning several learning architectures for training the neural controller to provide the appropriate inputs to the plant.
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