Magnetic suspension sensor rigidity testing system and method

Abstract

The invention discloses a magnetic suspension sensor rigidity testing system and method, and the system comprises a precise electrical control displacement platform, a controller, a force sensor, and a tool. The force sensor is connected between a rotor pasting tool and a vertical column tool through a force sensor connecting tool, precisely obtains the size of force on a rotor and determines a mechanical zero point, a balance point and a test initial position of the precise electrical control displacement platform through the controller, reads the values of the force sensor for many times at preset intervals, obtains the relation between the size of the force on the stator part of a to-be-tested magnetic suspension sensor and the displacement, and obtains the rigidity of the magnetic suspension sensor after displacement derivation. The system is suitable for the testing of the rigidity of the magnetic suspension sensor, and the testing method is accurate and simple.

Description

technical field [0001] The invention relates to a stiffness testing system and a testing method of a magnetic levitation sensor, belonging to the technical field of automatic testing systems. Background technique [0002] Magnetic levitation uses electromagnetic force to stably suspend the supported part in space, so that there is no mechanical contact between the supported part and the supported part. It has the characteristics of no lubrication, high speed, high precision and low power consumption. Not only has the centering function, but also can be used as a monitoring signal. As an important part, the magnetic levitation sensor's accuracy and reliability directly affect the accuracy and reliability of the superior product, so improving the accuracy and reliability of the magnetic levitation sensor is the top priority of the current work. The main parameter to measure the working quality of the magnetic levitation sensor is the quality factor. However, the higher the qu...

AI Technical Summary

Problems solved by technology

[0003] At present, the axial magnetic levitation sensor is tested with a manual displacement platform, and the inductance value under the corresponding displacement is tested according to the requirements. The ratio of inductance to resistance is the quality factor. Due to equipment limitations, the quality factor can only be used to represent the stiffness. Fitting) is determined by light and combined with hand feel. After that, every time a displacement is measured, the stage needs to be manually adjusted to the next position. This test method has low precision, low efficiency, and product consistency cannot be guaranteed.

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