【摘要】 为了实现转子的轴向振动测量，提出了一种磁聚焦式的转子振动传感器，介绍了传感器的结构和工作原理，结合磁聚焦技术和电磁感应定律推导了传感器的输出电压数学模型。利用MATLAB和COMSOL软件对传感器进行了理论计算和建模仿真，结合设定的转速、频率等定量分析了线圈输出电信号与转子振动和旋转参数之间的关系，并进行了旋转实验验证。仿真结果表明在1 A激励电流下传感器的激励装置可产生中心磁感应强度为0.02 T的聚焦磁场，且当转子振动时，线圈输出电信号与振幅、频率、转速间存在较强的线性关系。实验结果表明传感器输出电信号为类正弦电压，验证了本传感器测振的可行性。更多还原

【Abstract】 In order to achieve axial vibration measurement of the rotor, a magnetic focusing type rotor vibration sensor was proposed.The structure and working principle of the sensor were introduced, and the output voltage mathematical model of the sensor was derived by combining magnetic focusing technology and electromagnetic induction law.Theoretical calculations and modeling simulations were conducted on the sensor using MATLAB and COMSOL software, and the relationship between the coil output electrical signal and rotor vibration and rotation parameters was quantitatively analyzed based on the set speed, frequency and so on.Rotation experiments were conducted to verify the results.The simulation results show that the excitation device of the sensor can generate a focused magnetic field with a central magnetic induction intensity of 0.02 T under 1 A excitation current, and there is a strong linear relationship between the coil output electrical signal and amplitude, frequency, and speed when the rotor vibrates.The experimental results indicate that the output electrical signal of the sensor is a sinusoidal voltage, which verifies the feasibility of the vibration measurement of this sensor.更多还原