Hybrid Control For Shape Memory Alloy Actuators

Abstract

The intelligence exhibits self adaptively, self understanding, memory of the materials or structures. The intelligent and complex behaviour of these materials can not be often synthesized in formal way or suppose strong nonlinear characteristics (eg. the hysterezis exhibits by the functionality of shape memory alloys) becoming difficult to model and control by conventional methods. The fuzzy sets theory provides some proper tools for handling heuristic algorithms by linguistic description. Furthermore sliding mode control theory offers certain paradigms to control nonlinearities from the systems. In this paper a hybrid control method (fuzzy sliding mode control) is used to control a rotational joint with shape memory alloy actuation.