Designer Instruction Manual

29 Publication LOGIX-UM004A-EN-P - March 2007
Chapter 2
FuzzyDesigner Component Library
Introduction
The FuzzyDesigner Component Library offers eight components from
which you can efficiently build distributed fuzzy systems.
Component Interface
The connection between components is called a link. Generally, a
Hierarchical Fuzzy System (HFS) computes with data in the form of a
crisp (real) value and/or a fuzzy set. Not all components enable both
types of data to be transferred over the link. The data type on both
ends of a link should match. FuzzyDesigner uses icons to define a link
type as follows.
Topic Page
Component Interface 29
Library of Components 30
Supported Membership Functions 30
Input Port 32
Input Linguistic Variable 34
Output Linguistic Variable 36
Output Takagi-Sugeno Variable 42
Intermediate Linguistic Variable 46
Rule Block 47
PID Controller 52
Output Port 56
FuzzyDesigner Icons
Icon Description
Crisp value (input or output value link) – input crisp values and crisp values
resulting from defuzzification are transferred over the link
Crisp value (input or output value link) – crisp values are transferred over
the link
DOF value (input or output logical link) – degrees of fulfillment of fuzzy
terms of a fuzzy variable are transferred over the link to a rule block
DOF value (input or output logical link) – degrees of fulfillment of fuzzy
terms resulting from rule block evaluation are transferred over the link to a
fuzzy variable