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Bearingless magnetic levitation motor rotor radial position detection device and control method

A technology of motor rotor and detection device, which is applied in motor control, electromechanical device, estimation/correction of motor parameters, etc., can solve the problem of low radial position control accuracy, improve control stability and accuracy, and increase interval distance, the effect of increasing damping

Active Publication Date: 2021-01-05
SHANDONG UNIV
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Problems solved by technology

[0007] The main purpose of the present invention is to provide a bearingless magnetic levitation motor rotor radial position detection device and its control method in view of the above defects, so as to solve the problem of low radial position control accuracy of the bearingless magnetic levitation motor in the prior art when rotating at high speed question

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  • Bearingless magnetic levitation motor rotor radial position detection device and control method
  • Bearingless magnetic levitation motor rotor radial position detection device and control method
  • Bearingless magnetic levitation motor rotor radial position detection device and control method

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Embodiment Construction

[0033] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technology of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0034] It should be noted that the terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodimen...

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Abstract

The invention relates to the technical field of bearingless magnetic levitation motor detection devices and control, and the device comprises a magnetic levitation motor rotor radial position detection array sensor, a motor dsp controller, a stator, and a rotor, the magnetic levitation motor rotor radial position detection array sensor comprises a first eddy current displacement sensor, a second eddy current displacement sensor and a third eddy current displacement sensor, and the first eddy current displacement sensor, the second eddy current displacement sensor and the third eddy current displacement sensor are symmetrically arranged in the same radial plane, the center of the array sensor penetrates through the axis of the rotor. The control method comprises the steps: 1, using an arraysensor for obtaining a suspension displacement component; 2, obtaining a displacement deviation signal through comparison and transmitting the displacement deviation signal to the dsp; 3, outputtinga control instruction by the dsp, and changing the suspension force on the direction component; and 4, carrying out inspection type control to enable the rotor to suspend near the central position. High-speed and high-precision control over the radial displacement of a bearingless magnetic levitation motor is achieved.

Description

technical field [0001] The invention relates to the technical field of a bearingless magnetic levitation motor detection device and control, in particular to a bearingless magnetic levitation motor rotor radial position detection device and a control method, in particular to a bearingless magnetic levitation based on an array type eddy current displacement sensor A motor rotor radial position detection device and a position closed-loop control method. Background technique [0002] The bearingless magnetic levitation motor is a new type of motor that can realize torque control and suspension control at the same time. In the single-winding structure, there is only one set of windings in the stator slot, and each phase current in the winding contains two components: rotating current and suspension current, respectively. Used to generate rotational torque and suspension force. Compared with the traditional magnetic suspension bearing motor and the double-winding magnetic suspen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/21H02P23/14H02N15/00
CPCH02K11/21H02P23/14H02N15/00H02P2203/03
Inventor 俞军涛占昊王丽王松李雪莲王挺侹宋玉美
Owner SHANDONG UNIV
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