The Study on Fuzzy Logic Temperature Control for a liquid System

• Main Authors: Cuong-Tu Nguyen, 阮子強
• Other Authors: Chen-Jung Li
• Format: Others
• Language: en_US
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/zfw833

碩士 === 國立高雄第一科技大學 === 工程科技研究所 === 96 === This thesis investigates the technique of PID and Fuzzy Logic control by means of control temperature system. In the acrylic reactor system, the temperature control is very important. But the heating and cooling process can be very complex, and are often poorly understood. What works and what does not works is generally know, but what things works is often known. The Fuzzy Controller is one of the most popular controllers in the industry. Now, temperature control of an exothermic tank reaction using Fuzzy Logic Controller is studied here. We propose a weighted function to tune the weights of the system error into the fuzzy controller. Then, output of the fuzzy logic is transmitted into controller to control plant. The controllers can stabilize a process with a minimal amount of prior knowledge and improve rise time, settling time and overshoot effectively. The temperature control process of acrylic reaction is a multivariable and nonlinear dynamic system. Facing this plant, this paper presents a theoretical analysis and study on optimal controller design for stability and accuracy of control temperature system. This paper is also present to design PID and Fuzzy Logic controller temperature strategy which is able to enhance the capacity of the system. Simulation research and physical analog experiment prove the feasibility of this control strategy.