Implementing of neuro-fuzzy system with high-speed, low-power CMOS circuits in current-mode

Authors:
S. Afrang;M. Daneshwar;S. Aminifar;Gh. Yosefi
Affiliations:
Department of Electrical Engineering, Islamic Azad University, Mahabad, West Azarbayjan, Iran;Department of Electrical Engineering, Islamic Azad University, Mahabad, West Azarbayjan, Iran;Department of Electrical Engineering, Islamic Azad University, Mahabad, West Azarbayjan, Iran;Department of Electrical Engineering, Islamic Azad University, Mahabad, West Azarbayjan, Iran
Venue:
MINO'10 Proceedings of the 9th WSEAS international conference on Microelectronics, nanoelectronics, optoelectronics
Year:
2010

Citing 6
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Abstract

This paper presents a new general purpose neuro-fuzzy controller to realize adaptive-network-based fuzzy inference system (ANFIS) architecture. ANFIS which tunes the fuzzy inference system with a back propagation algorithm based on collection of input-output data makes fuzzy system to learn. To implementing this idea we propose several improved CMOS analog circuits, including Gaussian-like membership function circuit, minimization circuit, and a defuzzification circuit. A two-input/one-output neuro-fuzzy system composed of these circuits is implemented. The control surfaces of controller are obtained by using ANFIS training and simulation results of integrated circuits in less than 0.045mm2 area in 0.35µm CMOS standard technology. Simulation results show that all the proposed circuits provide characteristics of high operation capacity, high speed, and simple structures. They are very suitable for rapid implementation of high-speed complex neuro-fuzzy system.