I/O Characteristics of Fuzzy Controllers

You can consider a fuzzy controller to be a nonlinear characteristic field controller. The rule base and membership functions of the fuzzy system determine the behavior of the controller. Because the controller has no internal dynamic aspects, the I/O characteristics can describe the transient response of the controller completely.

This section includes examples that show the I/O characteristics of a fuzzy controller under various of conditions. Select an item from the list for information about I/O characteristics of a fuzzy controller with the described conditions.

• Partially Overlapping Input Terms
• Fully Overlapping Input Terms
• Non-Overlapping Input Terms
• Undefined Input Term Intervals
• Singletons as Output Terms with Fully Overlapping Input Terms
• Different Overlapping Degrees of Membership Functions for Output Terms
• Wide and Small Membership Functions for the Output Terms
• Using the Mean of Maximum (MoM) Defuzzification Method
• Reproducing a Given I/O Characteristic
• Dual-Input Fuzzy Controllers

These examples show that you can use a fuzzy controller to perform arbitrary I/O operations. The number of input and output linguistic terms depends on the desired characteristic type and the precision to which you approximate the given I/O characteristic.