Method and device for detecting position of suspended substance in magnetic suspension device

A suspension device and detection method technology, applied in the direction of measuring devices, electric devices, special recording/indicating devices, etc., can solve the problems of very high precision of system modeling, difficulty in application, complex system, etc., and achieve the elimination of external superimposed magnetic field impact, easy to implement, and robust
CN102445220AInactive Publication Date: 2012-05-09中磁力(深圳)科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
中磁力(深圳)科技有限公司
Publication Date
2012-05-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method and device for detecting the position of a suspended substance in a magnetic suspension device. In the method, a sensor group is arranged in each controllable horizontal moving direction of the suspended substance, and comprises two sensors arranged symmetrically relative to the center of the suspension device, wherein each sensor is correspondingly used for detecting electromagnetic field intensity and suspended substance field intensity for controlling the horizontal moving direction of the suspended substance; and the position of the suspended substance is obtained by judging according to an offset difference value obtained by subtracting the detection values of the two sensors in the same group. The device comprises sensor groups which correspond to the quantity of controllable horizontal directions of the suspended substance in the suspension device and a processing unit, wherein each sensor group comprises two sensors which are arranged along the same horizontal direction and are arranged symmetrically relative to the center of the suspension device. The device has the advantages of simple and compact structure, low cost, stable and reliable work, capability of eliminating the influence of an external superposed magnetic field, increasing the detection accuracy and control accuracy, and the like.
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Description

technical field

[0001] The invention mainly relates to the field of magnetic levitation devices, in particular to a method and device suitable for detecting the position of suspended objects in the magnetic levitation device. Background technique

[0002] The magnetic levitation device can be divided into electromagnetic attraction type levitation device and permanent magnetic repulsion type levitation device from the principle of levitation. The electromagnetic suction levitation device attracts the ferromagnetic levitation through the controllable electromagnet, making it suspend in the air without contact. The permanent magnetic repulsion levitation device is equipped with permanent magnets with opposite magnetic properties on the base and the suspended object respectively, and realizes levitation by using the principle of "same-sex repulsion" of permanent magnets. In the above two types of magnetic levitation devices, it is necessary to accurately know the position of t...

Claims

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