Theory and applications of adaptive control-A survey

Paper: Theory and applications of self-tuning regulators

Adaptive control is now finding its way into the marketplace after many years of effort. This paper reviews some ideas used to design adaptive control systems. It covers early ideas which primarily attempt to compensate for gain variations and more general methods like gain scheduling, model reference adaptive control, and self-tuning regulators. It is shown that adaptive control laws can be obtained using stochastic control theory. Techniques for analyzing adaptive systems are discussed. This covers stability and convergence analysis. Issues of importance for applications like parameterization, tuning, and tracking, as well as different ways of using adaptive control are also discussed. An overview of applications which includes feasibility studies as well as products based on adaptive techniques concludes the paper.

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Adaptive feedback control

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Adaptive Feedback Control

There is a vast literature about adaptive (self-organizing, self-optimizing) control systems. The aim of this paper is to point out some of the main ideas. Since there exists good survey papers about several of the classes of adaptive controllers the main part of this paper will concentrate on recent developments. The paper will cover stochastic adaptive controllers. The problem of dual control is given particular attention.

Stochastic adaptive control methods: a survey

Successful adaptive control of paper machines

The main task when controlling continuous digesters is to find a suitable strategy to control the quality figure of the pulp (the kappa-number) in a way that minimizes the deviation of the kappa-number from a preselected set- point. To solve this problem one has to face many difficulties as the process is very complex and as the measurement difficulties are several.

A New Approach to Continuous Digester Control

Correspondence item: Authors' reply

A model of a computer network has been built to study its behaviour under different conditions. The purpose of the network is to serve as a totally integrated data acquisition and data communication system in the electrical power field.

Torbjörn Hedqvist

Papers

Successful adaptive control of paper machines

A New Approach to Continuous Digester Control

Correspondence item: Authors' reply

A Simulation Study of Data Acquisition and Data Communication in a Complex Power Transmission Network