基于开关式Hall传感器的飞轮低速控制  

Low Speed Control for Flywheel Based on Switch-mode Hall

作　　者：郝敬然[1] 王舒雁[2] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100083 [2]北京控制工程研究所,北京100080

出　　处：《航天控制》2006年第1期29-32,共4页Aerospace Control

摘　　要：研究了基于TMS320LF2407A的飞轮用无刷直流电动机的数字化速度控制方案。为提高飞轮系统的可靠性,通常在电机定子上安装开关式Hall器件来检测转子的位置。但由于Hall所能提供的位置脉冲有限,在低速时,仅利用Hall提供的位置信息,很难得到精确的速度估计。为此,文中提出改善基于Hall的无刷直流电机速度估计性能的两种方法:一是增加Hall数量,二是标定Hall安装偏差。不同条件下的实验结果表明,本文所提的方法是有效的。This paper presents a TMS320LF2407A DSP-based digital speed-control scheme of brushless direct current （BLDC） motor used in flywheel. In order to improve the reliability of the flywheel system , the bang-bang Hall devices are usually mounted on the stator to detect the position of the rotor. Because of limited position pulses of the Halls, it is difficult to get the accurate speed estimation only using the information provided by the Halls at low speed. Therefore, two approaches are proposed to improve the estimating performance. One is adding more Halls, the other is calibrating the alignment error of the Halls. The experiment results in different conditions indicate that the methods are effective.

关 键 词：无刷直流电机 HALL 转速估计 

分 类 号：TM921.4[电气工程—电力电子与电力传动]