磁滯轉矩 的英文怎麼說
中文拼音 [cízhìzhuǎnjǔ]
磁滯轉矩
英文
hysteresis torque-
In the proposed technique the bemf waveform of bldcm need to be measured in advance at first, through computer simulation and frame transformation, the optimum q - axis current command is achieved. in order to minimize the torque ripple, the d and 0 - axis current command should be zero. furthermore, through reference frame transformation from dqo - axis to abc - axis, we can get the optimum current command in static abc reference frame
在這種控制方法中首先測量出電機的實際反電動勢波形，然後通過計算機擬合和坐標變換，求得產生恆定電磁轉矩所需的q軸電流，令i _ d ~ * = i _ 0 ~ * = 0 ，通過坐標變換，得到三相靜止坐標系a - b - c下的參考電流i _ a ~ * ， i _ b ~ * ， i _ c ~ * ，利用電流滯環控制來產生pwm信號，由於這種控制方法中電流不會突變，從而可以較好的抑制轉矩脈動。This paper makes the feasibility design and study of the dtc ( direct torque control ) system based on analyzing some important parts, such as the arithmetic model of asynchronous motor in - coordinates, the choice of voltage vectors, and flux - linkages models, etc. the research work in this paper is described as follows : 1 analyzing of the dtc theory : material about the development and theory of dtc, the composing of dtc - system are presented in this paper
本文在詳細分析了定子坐標系下的異步電動機數學模型、電壓空間矢量和磁鏈觀測器的基礎上，利用直接轉矩控制技術，構建了基於dsp的直接轉矩控制系統。論文的主要工作包括以下三個方面： 1直接轉矩理論分析研究：針對直接轉矩控制理論在低速范圍轉矩觀測器和轉速波動等問題，採取了滯環模式切換，矢量細分等改進措施。In the simulation system, the performances have been analyzed when the parameter of torque hysterelic comparator or the hysteretic band of stator flux is changed. the simulat ion of switching between hexagon flux control and circle flux control is also compl eted. in addition, the traditional pi regulator is improved in the paper
在模擬中分析了轉矩滯環和磁鏈滯環參數的變化對系統控制性能的影響，並且對兩種控制方法在基速范圍內的切換進行了模擬研究，同時在模擬中採用積分分離式pi調節演算法對傳統的pi調節器進行了改進。
分享友人