| 基于模型参考自适应辨识的直接转矩控制研究 |
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| 引用本文： | 李莉,孙启国,孔贵芹.基于模型参考自适应辨识的直接转矩控制研究[J].甘肃科学学报,2006,18(1):103-106. |
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| 作者姓名： | 李莉 孙启国 孔贵芹 |
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| 作者单位： | 兰州交通大学,系统分析与集成研究所,甘肃,兰州,730070 |
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| 基金项目： | 铁道部专项基金
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引进国际先进农业科技计划(948计划) |
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| 摘 要： | 针对在直接转矩控制系统中参数变化引起的电机特性不稳定问题,提出了一种基于模型参考自适应的定子磁链和转速的辨识方法,并将其应用在无速度传感器的直接转矩控制系统中.仿真结果表明:该方法有效地减小了定子电阻变化对系统特性的影响,并将由于转子常数变化引起的转速辨识误差限制在很小的范围内,从而提高了系统稳定性.
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| 关 键 词： | 直接转矩控制 模型参考自适应辨识 定子磁链辨识 转速辨识 |
| 文章编号： | 1004-0366（2006）01-0103-04 |
| 收稿时间： | 2005-03-10 |
| 修稿时间： | 2005年3月10日 |
A Direct Torque Control System Based on MRAC |
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| LI Li,SUN Qi-guo,KONG Gui-qin.A Direct Torque Control System Based on MRAC[J].Journal of Gansu Sciences,2006,18(1):103-106. |
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| Authors: | LI Li SUN Qi-guo KONG Gui-qin |
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| Abstract: | Due to the variation of motor parameters with time in a DTC system, a method for identifying stator flux and rotor speed based on MRAC is proposed and is introduced into a sensorless DTC system. The results of simulation show that this method can effectively reduce the influence of variation of stator resistance on motor performance and limit to a very small range the identification error of rotor speed, which is caused by the variation of rotor parameters, thus improving greatly the stability of the system. |
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| Keywords: | direct torque control(DTC) model reference adaptive identification(MRAI) stator flux identification rotor speed identification |
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