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Magnetic suspension motor fault-tolerant control system and method based on self-sensing technology

A fault-tolerant control and magnetic levitation technology, applied in the control system, motor control, electronic commutation motor control, etc., can solve the complexity of mechanical structure design, increase the radial radius and axial length of electromagnetic bearings, increase the cost of motor equipment, etc. problems, to avoid safety accidents, increase integration, and reduce overall costs

Pending Publication Date: 2021-07-23
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Installing a large number of displacement sensors will not only increase the cost of the motor equipment, but also increase the radial radius and axial length of the electromagnetic bearing, which will complicate the overall mechanical structure design of the motor and bring a lot of inconvenience

Method used

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  • Magnetic suspension motor fault-tolerant control system and method based on self-sensing technology
  • Magnetic suspension motor fault-tolerant control system and method based on self-sensing technology
  • Magnetic suspension motor fault-tolerant control system and method based on self-sensing technology

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Embodiment Construction

[0034] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] On the one hand, a maglev motor fault-tolerant control system based on self-sensing technology, such as figure 1 As shown, including magnetic levitation permanent magnet synchronous motor, sampling module, host computer communication module, power amplifier module, and controller module;

[0036] The magnetic levitation permanent magnet synchronous motor includes a magnetic levitation bearing and a permanent magnet synchronous motor, and the magnetic levitation bearing includes two radial magnetic bearings and an axial magnetic bearing, such as image 3 As shown, two radial magnetic bearings control the radial displacement of the rotor, and the axial magnetic beari...

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Abstract

The invention provides a magnetic suspension motor fault-tolerant control system and method based on a self-sensing technology, and relates to the technical field of magnetic suspension motor control. The system comprises a magnetic suspension permanent magnet synchronous motor, a sensor module, an upper computer communication module, a power amplifier module and a controller module. When a displacement sensor in the sensor module has a fault, the controller module is integrated with the fault-tolerant control method for the displacement sensor of the magnetic levitation motor with a self-sensing technology, and the method can realize the estimation of displacement through calculation of collected current information and replace the fault displacement sensor to continuously collect displacement information. And major safety accidents caused by faults of the displacement sensor are avoided.

Description

technical field [0001] The invention relates to the technical field of magnetic levitation motor control, in particular to a fault-tolerant control system and method for a magnetic levitation motor based on self-sensing technology. Background technique [0002] The magnetic levitation motor levitates the rotor by controlling the electromagnetic force and drives the rotor to rotate at high speed. It has the advantages of no friction, high speed, and low loss. It has been widely used in blowers, flywheel systems and other fields. Its research and development have broad prospects. [0003] As one of the core components of the magnetic levitation motor system, the displacement sensor is responsible for collecting and feeding back the radial and axial displacement deviation data of the rotor, which is one of the keys to the normal and stable operation of the motor. If the displacement sensor fails, the displacement information of the rotor cannot be updated, and the controller ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P29/02H02P6/08
CPCH02P29/028H02P6/085H02P2207/05
Inventor 徐海松杨东升徐沛森罗重威
Owner NORTHEASTERN UNIV
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