Radial/axial six-position integrated electric eddy transducer

Abstract

This invention relates to a radial and axial six digits integral electric vortex sensor, which characterized in that it is composed of the six digits integral electric vortex pick-off and the probe, wherein between the sensor probe and the probe there forms the radial probe space and the axial probe space, and the said sensor has six channels, whose probes are integrated in a sensor seat with the preamplifier, and the sensor is composed of the radial displacement probe, axial displacement probe, preamplifier, and power information output line, wherein the four radial probes probe the X direction and Y direction displacement information separately, and the axial probes probe the Z direction displacement information, the preamplifier and the probes of the six channels are integrated, which can be designed into the radial and axial six digits integral electric vortex sensor whose probe interfaces are external according to the structure demand. This invention improves the probe precision and stabilization, and reduces the volume and weight of the sensor greatly.

Description

technical field [0001] The invention relates to a non-contact eddy current sensor, especially a multi-bit integrated eddy current sensor, which can be used as a non-contact sensor with strict requirements on the volume, weight and precision of the system, such as a magnetic levitation flywheel, a magnetic levitation control torque gyroscope, etc. Motion detector. Background technique [0002] Magnetic bearings have the advantages of no mechanical friction and wear, no need for lubrication and maintenance, and allow high-speed rotation of the rotor. Therefore, they are used in satellite attitude control systems to support flywheels and control moment gyros, instead of mechanical bearings, to eliminate mechanical friction. , to increase the rotational speed of the rotor, thereby improving the control accuracy of the flywheel and the control moment gyroscope, prolonging the service life of the attitude control system and reducing the power consumption of the system. In the fiv...

AI Technical Summary

Problems solved by technology

In the five-degree-of-freedom magnetic levitation flywheel and the magnetic levitation control torque gyroscope, it is usually necessary to detect the displacement signals of five degrees of freedom. If an eddy current sensor is used, each degree of freedom needs a non-contact displacement sensor. In order to improve the accuracy of the sensor, it is usually adopted Differential structure, at this time each magnetic levitation system requires multiple eddy current sensors, and the existing sensors for magnetic bearings usually only integrate the probe and the preamplifier on a single channel or integrate them in the radial direction, so , the existing eddy current sensors have large volume, weight and power consumption, are not compact in structure, and have low assembly precision, which leads to large volume, weight and power consumption of the magnetic levitation flywheel or magnetic levitation control moment gyroscope, and low control precision

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