A Modified IMC Control Scheme Applied for the Rotational Speed Control of DC Motor System

• Main Authors: Xing-Yao Huang, 黃興曜
• Other Authors: Chia-Ho Huang
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/95671843600758390492

碩士 === 龍華科技大學 === 工程技術研究所 === 101 === The rotational speed control of DC motor system is a high-order, nonlinear and time-variant system, and it would become to be an unstable system while outside disturbances or unknown load existed. Owing to the unstability of the controlled system, it was very difficult to derive a simple and accurate mathematical model for a traditional controller design such as PID control. This paper tries to combine a feedforward integrator and IMC control theory for the rotational speed control of DC motor system, in order to improve the performance and stability of the overall closed-loop system. Eventually, the robustness and response of the proposed modified IMC controller was proved to be better than those of a traditional PID control through the verification of experiment results and the proof of mathematical theory .