New Displacement-Sensing Techniques for Magnetic Bearings

摘要：

We report three new displacement-sensing techniques for magnetic bearings. An outstanding feature is that a carrier wave or demodulation is not needed, while performances comparable to that of existing techniques are obtained. The first is based on eddy-current energy loss, and has very simple sensor electronics. The second is capacitance type. It works by cyclic charge and discharge of a capacitor, and allows for direct fabrication on printed circuit board. The third is inductance type. It permits sensing across a 0.5-mm thickness wall of non-magnetic stainless-steel material, while the bandwidth is a few kHz.

关键词： Displacement Sensors Eddy-Current Testing Capacitive Testing Inductive Testing Displacement Measurement Switching Circuits

作者: Li Lichuan

作者单位: Department of Electrical Engineering, Xian Jiaotong University, Xian, China

会议类型: 国际会议

会议名称: The Twelfth International Symposium on Magnetic Bearings(第十二届国际磁悬浮轴承学术会议)

会议地点: 武汉

会议语种:英文

页码: 1-7

在线出版日期: 2010-08-22（万方平台首次上网日期，不代表论文的发表时间）