1990•Journal of the Korean Society of Fisheries and Ocean TechnologyRequires access

Control of DC-Servomotor Speed by Using Fuzzy Controller

Geun-Taek Kang, Young-Taek Kim

Abstract

DC-servomotor acts an important role in robots and manipulatirs. But the precise control of DC-motor is difficult by a using usual linear controller because of the nonlinear characteristics of DC-motor. This study suggests the use of fuzzy controller in the control of DC-servomotor speed. The fuzzy controller is designed from a fuzzy model which can represent nonlinear systems very well. Hence the fuzzy controller is very useful in the control of nonlinear systems such as DC-motor. We construct a fuzzy model of DC-servomotor, design a fuzzy controller from the fuzzy model, and compare that with a linear controller. When we use the fuzzy controller, the static ripples are reduced and the rise time is required 20% less than in using a linear controller.

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Key concepts: Control theory (sociology), Servomotor, Fuzzy logic, DC motor, Fuzzy control system, Controller (irrigation), Control engineering, Open-loop controller