Transactions of the Institute of Measurement and Control

Linkens, D.A.; Abbod, M.F.

doi: 10.1177/014233129301500303pmid: N/A

A generic architecture for supervisory intelligent control based on fuzzy logic is presented. The structure consists of a multi-layer controller which incorporates a rule-based fuzzy logic controller for direct control at the lower level. Higher-level supervisory control is used for supervising the operation of the direct controller. Typical tasks of the supervisory controller are monitoring the process and the controller for determining the operating modes, assignment of initial conditions for the local controller, adaptation schemes, and fault detection and diagnosis. The controller structure is described, followed by its implementation on a real-time process to illustrate the performance and applicability, of the proposed structure.

Whalley, R.; Zeng, Z.

doi: 10.1177/014233129301500304pmid: N/A

Design and analysis procedures for multivariable multidimensional computer controlled systems are presented. An algorithm enabling relative stability to be assessed is derived and the stable portion of the gain space for a two-dimensional system is computed.

Caponetto, R.; Fortuna, L.; Graziani, S.; Xibilia, M.G.

doi: 10.1177/014233129301500305pmid: N/A

In this paper an overview on Genetic Algorithms (GAs) is reported. GAs are described from a theoretical point of view, important implementation problems are dealt with and a wide variety of GA applications reported in system engineering literature are described. The survey also includes some studies at present in progress in our laboratories, regarding the use of GAs in solving optimisation problems in the fields of neural networks and control theory.