The Intelligent PID controller

• Main Authors: YunNan Ou, 歐雲南
• Other Authors: H.K Chiang
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/01146104327763048207

碩士 === 國立雲林科技大學 === 電機工程技術研究所 === 88 === Although the research about the PID controller has been existed for long time and control theory is progressing fast, in practical application, the tuning of the PID parameters is a troublesome and time-wasting process. It must be solved by practical experience of the engineers. Thus, the thoughts on controlling systems by expert systems have been developed, that is, the expert controller. In this paper, we propose the intelligent PID controller, which attains the following functions to solve those troublesome problems caused by tuning PID parameters. (1) able to stabilize a process based on limited knowledge about dynamic of process. (2) the more understanding about plant, the more possibilities to improve the control of the process. (3) able to select automatically an appropriate controller and parameters according to any user or system requirement. (4) able to monitor, control and display the system performance. (5) able to deal with any unexpected or unstable system performance. (6) all controller structure is open, which is easy to modify, extend, and improve its intelligence according to any user requirement. The whole system includes one PC, one DSP board, and its supporting software. In addition, the programming is coded by Matlab. Finally, we simulate the common plants by using the analogy circuit and use a system of fan and board to verify the performance of the intelligent PID controller.