Harris, C.J. and Moore, C.G.
Phase plane analysis tools for a class of fuzzy control systems.
1st Int. Conf. on Fuzzy Systems
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Although fuzzy controllers have been fully applied with success, one of the reasons they are not used more generally could be the lack of analysis tools. This paper describes a performance prediction and design tool, applicable to a class of systems that have quasi second order behaviour, which is analogous to the algebraic phase plane approach. Using this technique the response of a rule based system can be investigated and the influence of individual ruls on overall performance can be determined, allowing a stability analysis to be carried out directly on the rule based system. Implications for controller design are considered. The tools described are supported by a software package written at Southampton University and used by two UK Ministry of Defence establishments for autonomous vehicle control research.
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