Introduction to Model Based Fuzzy Control

A fuzzy logic controller (FLC) defines a static nonlinear control law by employing a set of fuzzy if-then rules, or fuzzy rules for short. The if-part of a fuzzy rule describes a fuzzy region in the state space. The then-part of a fuzzy rule specifies a control law applicable within the fuzzy region from the if-part of the same fuzzy rule. During control with an FLC a point in the state space is affected to a different extent by the control laws associated with all the fuzzy regions to which this particular point in the state space belongs.