PLC를 이용한 온도제어에서 선형함수와 시그모이드함수 제어기 성능 비교

• 영문명: Comparison of Linear and Sigmoid Functions for Controlling Temperature Using PLC System
• 발행기관: 한국산업기술융합학회(구. 산업기술교육훈련학회)
• 저자명: 김군진(Gun-Jin Kim)
• 간행물 정보: 『산업기술연구논문지』산업기술연구논문지 제23권 4호, 35~42쪽, 전체 8쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2018.12.30

영문 초록

Temperature control using Programmable Logic Controller(PLC) was normally implemented as Proportional Integral Derivative(PID) controller. While establishing the PID parameter, increasing the Proportional(P) gain to improve the response characteristics resulted in a smaller linear control region. When the linear region becomes smaller, the control changes from the desired PID control to the undesired on/off switching control. As a solution to this problem, a new control method using sigmoid function has been applied. To validate the new control method, an experiment was conducted to compare the sigmoid function control by controlling the P gain parameter. The experimental set-up comprised a heater, a cooler(fan), a temperature sensor, the PLC input and an ADC-modules. A TCP/IP communication was implemented using a communication socket for transferring data from the PLC to the PC. The data from the PLC was supplied to the PC using LabVIEW. With this experimental set-up, the resulting temperature variation was displayed graphically on the PC screen. Simultaneously, the data from each PLC was stored and analyzed in the PC. From the experimental results, the control performance as determined by the sigmoid function was found to be better than that by the linear function.

목차

Ⅰ. 서 론

Ⅱ. PLC를 이용한 온도 피드백 제어기

Ⅲ. 실험장치 및 방법

Ⅳ. 실험결과

Ⅴ. 고찰 및 결론

키워드

PLC 프로그래밍 논리 제어기 Temperature Control 온도제어 Chamber Temperature 챔버 온도 PID Controller 비례 적분 미분 제어기 Linear Function 선형함수 Sigmoid Function 시그모이드 함수 P Gain 비례 제어기 이득 ADC 아날로그-디지털 변환기 TCP/IP Transmission Control Protocol/Internet Protocol