Faculty of Mechatronics, Armament and Aerospace, Military University of Technology, 00-908 Warsaw, Poland.
Airworthiness Division, Air Force Institute of Technology, 01-494 Warsaw, Poland.
Sensors (Basel). 2023 Feb 20;23(4):2332. doi: 10.3390/s23042332.
This paper presents laboratory results on the influence of the magnetic field of an active magnetic bearing (AMB) on the eddy-current sensor operation. The magnetic suspension technology enables continuous diagnostics and monitoring of a rotary machine and eliminates drawbacks of classical bearing properties. The magnetic bearing system usually consists of two radial and one axial magnetic bearing. It is combined with a control unit, amplifiers and sensors for measuring the instantaneous position of the shaft. For this purpose, eddy-current sensors are frequently used. They operate in close proximity to the electromechanical actuators; therefore, the question arises whether the actuators do not interfere with the correct operation of these sensors. In the paper, the test rig and research plan prepared for that investigation are delivered. Measurement signals were registered from four control channels for different configurations of power supplies for system elements, e.g., with sensors and AMBs turned off, with sensors turn on and at normal work. Recorded time courses are presented and discussed in the paper. For the prepared test rig and AMB/eddy-current sensor configuration, no significant influence of the generated magnetic field from the support is found for the eddy-current sensor output.
本文介绍了主动磁轴承（AMB）磁场对电涡流传感器运行影响的实验室结果。磁悬浮技术可实现旋转机械的连续诊断和监测，并消除传统轴承性能的缺点。磁轴承系统通常由两个径向和一个轴向磁轴承组成。它与控制单元、放大器和用于测量轴瞬时位置的传感器相结合。为此，通常使用电涡流传感器。它们与机电执行器近距离工作；因此，出现了一个问题，即执行器是否不会干扰这些传感器的正确运行。本文提供了为此项研究准备的测试台和研究计划。从四个控制通道记录了测量信号，用于系统元件的不同电源配置，例如，关闭传感器和 AMB、打开传感器和正常工作。本文呈现并讨论了记录的时间过程。对于准备好的测试台和 AMB/电涡流传感器配置，未发现支撑产生的磁场对电涡流传感器输出有重大影响。
