Question

a) b) A fuzzy controller utilises three processes which include fuzzification, inference and de- fuzzification. Explain the requirement and operation of each of the three processes. 19 marks) The inputs to a fuzzy P+D controller are given as error and rate of change of error. The controller output is in the form of voltage. Sketch typical input and output membership functions (maximum of three for each input and output) supported by a fuzzy association map describing the rule base. [6 marks) c) The inference engine within a fuzzy controller has produced the following output memberships. 1 1.1 1.2 2 2.1 2.2 2.4 2.7 5 V Figure Q5c Calculate the crisp output voltage using an appropriate method. [5 marks)

Answer 1

Answer- 1

A fuzzy controller utilizes three process -

1)fuzzification

2)inference

3)defuzzification

Page No. Date / Haswell A fuzzy Controller is an arrangement of Physical components designed to alter another physical System so that this System enhibits curton desired Character -istics . fuzzy logic is applied with areat Sucrem in various control application. Almost all consumer products I have fuzzy Control. Some of the framples include o controlling your owom temporuthames with jign Conditioner A fuzzy Controllen which include fuzz utilizes three procenes Inferenca e defuzzification lesfcation, Fuzzification - By fuzzification, we mean the proran of converting an obgle in to fuzzy Inference - fuzzy Inference System is the key Cernit of a fuzzy logic system having O as its primary work en defa zifiration - De fuzz lication is the procen duision

of producing a Tomiss logi quentifiable result in given fuzzy sets & corresponding membership degrees