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Design and structural analysis of interval Type-2 fuzzy PI / PD controller(PDF)

[ISSN:1007-449X/CN:23-1 408/TM]

Issue:
2016年06
Page:
50-62
Research Field:
Publishing date:

Info

Title:
Design and structural analysis of interval Type-2 fuzzy PI / PD controller
Author(s):
LEI Bin-bin1 BAO Hong1 XU Qian2
 (1. Key Lab. of Electronic Equipment Structure Design,Ministry of Education,Xidian University,Xi’an 710071,China; 2. Xinjiang Observatory,National Astromomical Observatories,Chinese Academy of Sciences,Urumqi 830011,China)
Keywords:
Fuzzy control Interval type-2 fuzzy set structural analysis variable gain control nonlinear PID control
PACS:
TP 273
DOI:
10. 15938 / j. emc. 2016. 06. 007
Abstract:
Aiming at the problem of unknown internal working mechanism for the fuzzy controller,a class of interval type-2 ( IT2) fuzzy PI / PD controller was proposed,and the analytical structure of this IT2 fuzzy controller was derived. Mamdani rule form was used in fuzzy controller and each input variable only has two IT2 fuzzy sets. The fuzzy controller has the advantages of fewer rules,smaller uncertainty effects of fuzzy rules and smoothing control output. The proposed IT2 fuzzy controller is proved to be equivalent to a nonlinear proportional integral ( PI) or proportional differential ( PD) controller with variable gains by dividing the input space into 15 partitions and calculating the mathematical expression of the control signal on each partition. Finally,the effectiveness of the IT2 fuzzy controller were verified by comparing the control effects with its type-1 fuzzy controller and traditional PI controller in the simulation and experiment.

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Last Update: 2016-08-20