Vlsi Implementation of a Universal Fuzzy Controller
نویسندگان
چکیده
ABSTRACT: In this paper a non-conventional structure for a “fuzzy” controller is proposed. It does not require signal division, and it produces control surfaces similar to classical fuzzy controllers. The structure combines fuzzification, MIN operators, normalization and weighted sum blocks. The fuzzy architecture is implemented as a VLSI chip using 2um n-well technology. A new fuzzification circuit, which requires only one differential pair per membership functions is proposed. Eight equally spaced membership function are used in the VLSI implementation. Simple voltage MIN circuits are used for rule selection. A modified TakagiSugeno approach with normalization and weighted sum is used in the defuzzification circuit. Weights in the defuzzifier are digitally programmable with 6 bit resolution.
منابع مشابه
Universal Triple I Method for Fuzzy Reasoning and Fuzzy Controller
As a generalization of the triple I method, the universal triple Imethod is investigated from the viewpoints of both fuzzy reasoningand fuzzy controller. The universal triple I principle is putforward, which improves the previous triple I principle. Then,unified form of universal triple I method is established based onthe (0,1)-implication or R-implication. Moreover, the reversibilityproperty o...
متن کاملA VLSI Design and Implementation for a Real-Time Approximate Reasoning
AB STRACT. The role of inferencing with uncertainty is becoming more important in rule-based expert systems (ES) , since knowledge given by a human expert is often uncertain or imprecise. We have succeeded in designing a VLSI chip which can perform an entire inference process based on fuzzy logic. The design of the VLSI fuzzy inference engine emphasizes simplicity, extensibility, and efficiency...
متن کاملDesign and PLC Implementation for Speed Control of DC Motor using Fuzzy Logic
In this article, a speed control of DC motor is designed and illustrated using fuzzy logic-based programmable logic controller (PLC). The DC motor is an attractive part of electrical equipment in many industrial applications requiring variable speed and load specifications due to its ease of controllability. The designed system is consisted of three main parts including programmable logic contr...
متن کاملIdentification and Analysis of Factors Effecting the Implementation of Universal Banking Based on Fuzzy Cognitive Map
This study aims to determine the factors affecting the Implementation of Universal Banking. For this purpose, 50 factors were identified through the study of literature and interviews with experts and managers of the banking industry who had experienced in Universal banking implementation. These factors were classified into six categories: customer, infrastructure, process, structure, human re...
متن کاملA New Implementation of Maximum Power Point Tracking Based on Fuzzy Logic Algorithm for Solar Photovoltaic System
In this paper, we present a modeling and implementation of new control schemes for an isolated photovoltaic (PV) using a fuzzy logic controller (FLC). The PV system is connected to a load through a DC-DC boost converter. The FLC controller provides the appropriate duty cycle (D) to the DC-DC converter for the PV system to generate maximum power. Using FLC controller block in MATLABTM/Simulink e...
متن کامل