應用田口法實現感應電動機之參數量測與強健速度控制器設計

• Main Authors: Lee Cheng-Jen, 李成禎
• Other Authors: Chang Yeong-Hwa
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/25836093637516907670

碩士 === 中正理工學院 === 電機工程研究所 === 87 === Recently, due to the improvement of electronic techniques, the progress of micro-computer ability, and the development of vector control technique, a high performance control of induction motors has become realizable. However, some electrical parameters such as stator resistance and rotor resistance will be changed because of different operation environments, so that the precision of speed control will be degraded. Hence, how to establish an accurate mathematical model to provide subsequent controller design a necessary reference to conquer the effect of parameter variations is an important topic of the concern. In this thesis, the Taguchi method is first employed, where the speed, operating temperature, and load condition are selected as control factors. By a designated orthogonal array, the number of experiments is reduced and the mechanical parameters, moment of inertia ( ) and friction coefficient ( ), can be efficiently calculated. Also, we use the analysis table of variance to analyze and decide which factor is the dominant one affecting the parameter perturbation of vector control induction motors. To validate the correctness of the derived model, we compare the difference between the simulated and experimental results. Having obtained the perturbation information of mechanical parameters, and , our ultimate goal is to design a robust speed controller by utilizing quantitative feedback theory to overcome the effects of parameter variations and change of load. Finally, the derived controllers successfully implemented in a PC-based experimental induction motor/load system. The experimental results illustrate that the derived controller indeed provides good performance of robustness and capability of load rejection.