Displacement sensor, method for acquiring displacement signal and computer readable storage medium

Abstract

The invention provides a displacement sensor, a method for acquiring a displacement signal and a computer readable storage medium. The displacement sensor comprises a control device and at least one group of sensor coils, wherein each group of sensor coils comprises a first winding and a second winding which are connected in series between two wiring ends; the control device comprises a driving unit, a main control unit and a sampling unit, and the main control unit is used for generating a driving control signal and a sampling control signal; the driving unit is used for respectively outputting two alternating-current voltages with complementary phases to the two wiring ends of the sensor coil according to the driving control signal; and the sampling unit is used for sampling the voltageof the connection point of the first winding and the second winding according to the sampling control signal, and the displacement signal of the displacement sensor is generated according to the sampled voltage. According to the embodiment of the invention, the integration level of the displacement sensor can be greatly improved, and fewer discrete devices are used while high-precision displacement detection is realized.

Description

technical field [0001] Embodiments of the present invention relate to the field of sensors, and more specifically, to a displacement sensor, a method for acquiring a displacement signal, and a computer-readable storage medium. Background technique [0002] In order to overcome the shortcomings of mechanical bearings and mechanical friction in traditional rotating electrical machines, various non-contact magnetic bearings, namely magnetic suspension bearings, have emerged. Typical magnetic suspension bearings include radial magnetic suspension bearings, radial thrust magnetic suspension bearings, electromagnetic suspension bearings with controllable radial degrees of freedom, and the like. Magnetic levitation motor is a motor that uses magnetic levitation bearings to assemble the rotor to the stator in a non-contact manner. With the development of technology and environmental protection requirements, the application of magnetic levitation high-speed motors is becoming more an...

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention aim at the problems of large-scale, low integration, high cost, and low reliability of the inductive sensor circuit described above, and provide a displacement sensor, a method for obtaining a displacement signal, and a computer-readable storage medium

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