Author(s)

M.N. Polkinghorne, R.S. Burns & G.N. Roberts

Abstract

The dynamic characteristics of marine vessels will alter with changes in environmental conditions and/or operating conditions. For a course-keeping autopilot to maintain a high level of performance it is necessary to achieve a form of on-line learning to enable the autopilot to determine any internal adjustments necessary as compensation. Considering a fuzzy logic design of autopilot, the formulation of a performance index is proposed to assess the level of vessel performance achieved, and to suggest suitable modifications as appropriate. 1 Introduction In general, ship autopilo

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