The use of self-organizing fuzzy logic controllers (SOFLCs) in high-speed multivariable 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 modelling, and the resulting 48-rule fuzzy model then provides 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.
Design of a reduced-rule self-organizing fuzzy logic controller for water hydraulic applications
2000
11 Seiten, 9 Quellen
Article (Journal)
English
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