Applications of fuzzy set theory

A grey prediction fuzzy controller for constant cutting force in turning

“…These fuzzy rules are then transformed into a control type of human thinking via fuzzy logic and fuzzy set operation. The fuzzy set theory was first proposed by Zadeh [26], and numerous control applications subsequently have been developed using this theory [13,27]. The main design objective of most of these applications is to construct a fuzzy system to approximate the desired control action.…”

ITONUS: Expert system for machining on a lathe

“…Fuzzy controller algorithms are formed from the combination of such rules. Fuzzy control of processes is an alternative when systems cannot be well controlled by classical or modern control techniques (Maiers and Sherif, 1985).…”

Fuzzy Logic Attitude Control System for a Mini Helicopter Expanded Non Linear Mathematical Model

“…Also, it is very difficult to develop an autonomous flight control system of unmanned helicopter based on the conventional method because the dynamic of miniature helicopter is usually highly nonlinear and contains many uncertainties. In order to overcome these difficulties, one of the intelligent control theories has been investigated [14]. Fuzzy logic concepts are gracefully employed in unmanned helicopter control system design, the flight control system designed based on fuzzy logic concepts can be performed based on miniature helicopter nonlinear mathematical models at different reference flight conditions.…”