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Design of a reduced-rule self-organizing fuzzy logic controller for water hydraulic applications

Lookup NU author(s): Alan Dobson, Professor Tony Roskilly

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Abstract

The use of self-organizing fuzzy logic controllers (SOFLCs) in high-speed multi-variable systems has been largely limited by the high number of rules generated, and by the application specific nature of the learning process. This paper concerns the development of a more generically applicable form of an SOFLC that uses a limited rule base of predetermined size, resulting in improved generalization properties and a reduction in the processing time. A simulation study on a four-valve water hydraulic actuator for a subsea robotic arm shows how this method can be applied to system modeling, the resulting 48-rule fuzzy model then providing the necessary process model for training the SOFLC. Using this fuzzy model the SOFLC was able to tune a set of 12 rules to control the actuator and then to adapt these rules to compensate for a simulated leak of hydraulic fluid.


Publication metadata

Author(s): Jones E, Dobson A, Roskilly AP

Publication type: Article

Publication status: Published

Journal: Proceedings of the Institution of Mechanical Engineers. Part I, Journal of systems and control engineering

Year: 2000

Volume: 214

Issue: 5

Pages: 371-382

ISSN (print): 0959-6518

ISSN (electronic): 2041-3041

Publisher: Sage Publications

URL: http://dx.doi.org/10.1243/0959651001540726

DOI: 10.1243/0959651001540726


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