Volume 7 Number 3 (Mar. 2012)
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JCP 2012 Vol.7(3): 586-596 ISSN: 1796-203X
doi: 10.4304/jcp.7.3.586-596

Design and Implementation of an Effective Fuzzy Logic Controller based on Quantum Inspired Evolutionary Algorithm

Pintu Chandra Shill1, Md. Amjad Hossain2, Md. Kowsar Hossain2, Md. Faijul Amin1, Kazuyuki Murase1
1Department of System Design Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Japan
2Department of Computer science and Engineering, KUET, Khulna 9203, Bangladesh


Abstract—This paper proposes a new approach based on quantum inspired evolutionary algorithm (QIEA) for effective selection and definition of fuzzy if-then control rules as well as the shapes of membership functions (MFs) to design fuzzy logic controllers (FLCs). The majority of works done on designing FLCs rely on the knowledge base derived from imprecise heuristic knowledge of experienced operators or persons. These traditional methods, however, are cumbersome to implement and very time consuming to evaluate. Our proposed approach is a self-learning adaptive method and decomposes a problem in such a way that leads to more effective knowledge acquisition and improved control performance with the FLCs. In order to verify the effectiveness of this self-learning adaptive method, a standard test-bed, the truck backer-upper problem, is considered as the test problem. During each generation, the rules are updated and the MFs’ parameters are altered using a complementary double mutation operator (CDMO) and a discrete crossover (DC). This paper also demonstrates the effect of different fuzzification and defuzzification methods on the response of the FLC. The center of gravity (COG) and modified COG are used as defuzzifier to analyze the results of the fuzzy controller. The experimental results show that the proposed approach with different fuzzification and MCOG to design FLCs performs better than the traditional methods with triangular fuzzification and COG in terms of required time to backing up the truck.

Index Terms—Fuzzy Logic Controller, Fuzzy Rule base, Quantum Inspired Evolutionary Algorithm, Optimization, Defuzzification, Backing up a truck.

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Cite: Pintu Chandra Shill, Md. Amjad Hossain, Md. Kowsar Hossain, Md. Faijul Amin, and Kazuyuki Murase, "Design and Implementation of an Effective Fuzzy Logic Controller based on Quantum Inspired Evolutionary Algorithm," Journal of Computers vol. 7, no. 3, pp. 586-596, 2012.

General Information

ISSN: 1796-203X
Abbreviated Title: J.Comput.
Frequency: Bimonthly
Editor-in-Chief: Prof. Liansheng Tan
Executive Editor: Ms. Nina Lee
Abstracting/ Indexing: DBLP, EBSCO,  ProQuest, INSPEC, ULRICH's Periodicals Directory, WorldCat,etc
E-mail: jcp@iap.org
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