田口式實驗法應用於向量控制感應電動機的模式建立與驗證

　　　　　近年來，由於電子技術的改進，再加上向量控制技術的發展，促使高性能的感應 電動機控制得以實現。但是，感應電動機的電氣參數會隨工作環境而改變，進而影響轉速控 制的精度；因此，在不同的工作條件下，如何建立一個正確的數學模式，以提供後續控制器 設計時的依據，進而克服電氣參數的影響，便是一個重要的研究子題。本文主要係應用田口 式實驗法則，以轉速、溫度、負載等為控制因子，針對不同的條件進行實驗，藉由直交表的 配置，得以簡化實驗次數，再經由向量控制感應馬達之等效模式，以計算其轉動慣量及黏滯 係數等機械參數，其次由相關實驗之回應表，可進一步分析何種因素是影響感應電機數學模 式的主要因子。最後，我們將比較實測及模擬結果，以驗證所得等效模式之正確性。
　　　　　Recently, because of the improvement of electronic techniques and the development of vector control technique, a high performance control of induction motors has become realizable. However, some electric parameters will be changed due to different environments so that the precision of speed control will be degraded. Hence, how to build an accurate mathematical model to provide the subsequent controller design a necessary reference and conquer the effect of variations of electrical parameters is an important topic of concern. In this paper, the taguchi method is used, where speed, temperature, and load are control factors. According to a scheduled orthogonal array, the number of experiments is reduced and the mechanical parameters, moment of inertia and friction coefficient, are calculated. We further use the analysis table of variance to decide which factor is the dominant factor affecting the modeling of vector-controlled induction motors. Finally, we compare the difference between the experiment results and simulation results to validate the correctness of the derived model.