Design of a Grey Decision Controller for Sensorless Induction Motor Vector Control System

• Main Authors: Chih-Hao Tsai, 蔡志浩
• Other Authors: Shun-Yuan Wang
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/76066470288243736612

碩士 === 國立臺北科技大學 === 電機工程系碩士班 === 89 === In this study, we propose a new controller — Grey Decision Controller (GDC) to improve the performance of conventional PI controller. The GDC is derived from grey decision theory, and is implemented in the speed sensorless vector-controlled system of induction motor. The proposed controller follows the prescribed goal, and utilizes the effect weight and the best decision factor of the control situation to achieve the decision. Experiment results show that the dynamic performance and stability of the proposed controller is better than that of the traditional PI controllers. When system’s parameters or loading varies, the performance of the GDC is robust. With good adaptability, the GDC is strongly recommended for the controller in the speed sensorless vector—controlled system of induction motor. Keyword: grey decision theory, the best decision factor, effect weight, field vector control