| 无传感器磁轴承转子位置检测与研究 |
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| 引用本文： | 王军,徐龙祥. 无传感器磁轴承转子位置检测与研究[J]. 机械工程与自动化, 2005, 0(1): 71-73,76 |
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| 作者姓名： | 王军 徐龙祥 |
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| 作者单位： | 1. 南京航空航天大学,自动化学院,江苏,南京,210016
2. 南京航空航天大学,机电学院,江苏,南京,210016 |
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| 基金项目： | 航空“十五”预研基金资助项目 (41 80 1 0 40 2 ) |
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| 摘 要： | 主要研究一种无传感器磁轴承转子位置自检测的方法,该方法不需要专用的位移传感器。由于线圈的电感是转子位移的函数,故其两端的电压也为转子位移的函数。在磁轴承系统的线性功率放大器的输入端注入一高频信号作为转子位置的测试信号,将线圈端电压经过谐振电路来提取含有位置信号的高频电压信号,再将电压信号进行精密半波整流后得到脉动的直流信号,最后通过低通滤波器得到平滑的转子位移直流信号,由PID控制器转换为转子位移的控制信号。仿真试验证明了该方法的可行性。
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| 关 键 词： | 磁悬浮轴承 自感应 位置自检测 |
| 文章编号： | 1672-6413(2005)01-0071-03 |
Detection and Research of the Rotor Displacement of Self-sensing Magnetic Bearing |
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| WANG Jun,XU Long-xiang. Detection and Research of the Rotor Displacement of Self-sensing Magnetic Bearing[J]. Mechanical Engineering & Automation, 2005, 0(1): 71-73,76 |
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| Authors: | WANG Jun XU Long-xiang |
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| Affiliation: | WANG Jun~1,XU Long-xiang~2 |
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| Abstract: | A method of automatically detecting rotor position of self-sensing magnetic bearing is studied, in this method, no special displacement sensors are used. Because the winding inductance is the function of the rotor displacement, the winding voltage is also the function of the displacement. A high frequency signal as the testing signal of the displacement was injected into the input of linear power amplifier.Through the resonance circuit,the output voltage contains the information of the displacement,then this signal is transformed to the voltage signal, which is proportional to the rotor displacement by full wave rectification circuit and low pass circuit. This signal is put into a PID controller to get the control signal of the rotor displacement. Finally the emulational experiment proves the feasibility of this method. |
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| Keywords: | magnetic bearing self-sensing position automatic detection |
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