Magnetic suspension bearing modeling method and system under multi-parameter uncertainty condition

A magnetic bearing and uncertainty technology, which is applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as high-order truncation error, parameter uncertainty, and difficulty in establishing accurate mathematical models.

Active Publication Date: 2021-05-11
SHANDONG UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the magnetic levitation electric spindle system is a typical nonlinear system, the control system is usually more sensitive to actual disturbances, and the electromagnetic force acting as a support has parameter uncertainties whether it is calculated by magnetic circuit method or electromagnetic field analysis; while modeling Higher-order truncation errors also make it difficult to model accurately mathematically

Method used

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  • Magnetic suspension bearing modeling method and system under multi-parameter uncertainty condition
  • Magnetic suspension bearing modeling method and system under multi-parameter uncertainty condition
  • Magnetic suspension bearing modeling method and system under multi-parameter uncertainty condition

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Embodiment 1

[0041] This embodiment provides a method for modeling magnetic suspension bearings under the condition of multi-parameter uncertainty, which includes:

[0042] S101: Obtain the rotor amplitude and air gap parameters of the magnetic suspension bearing, and calculate the amplitude air gap ratio of the magnetic suspension bearing.

[0043] S102: Comparing the calculated amplitude-air-gap ratio with the set amplitude-air-gap threshold, if the former is greater than or equal to the latter, construct a magnetic suspension bearing model under the condition of high-order truncation error bounds and other uncertainty parameter bounds; if the former If it is less than the latter, construct the magnetic suspension bearing model under the condition of the magnetic bearing force uncertainty error bound and other uncertain parameter bounds; use the matching control strategy to simulate the corresponding magnetic suspension bearing model to accurately control the magnetic suspension Bearings...

Embodiment 2

[0111] This embodiment provides a magnetic suspension bearing modeling system under the condition of multi-parameter uncertainty, including:

[0112] Amplitude air gap ratio calculation module, which is used to obtain the rotor amplitude and air gap parameters of the magnetic suspension bearing, and calculate the amplitude air gap ratio of the magnetic suspension bearing;

[0113] A model building block, which is used to compare the calculated amplitude-air-gap ratio with the set amplitude-air-gap threshold, and if the former is greater than or equal to the latter, construct the maglev under the condition of high-order truncation error bounds and other uncertain parameter bounds Bearing model; if the former is less than the latter, construct the magnetic suspension bearing model under the condition of the magnetic bearing force uncertainty error bound and other uncertain parameter bounds; use the corresponding control strategy to simulate the corresponding magnetic suspension b...

Embodiment 3

[0117] This embodiment provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the method for modeling magnetic suspension bearings under the condition of multi-parameter uncertainty as described in the first embodiment above is implemented. A step of.

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Abstract

The invention belongs to the field of magnetic suspension modeling floating bearing modeling, and provides a magnetic suspension bearing modeling method and system under a multi-parameter uncertainty condition. The magnetic suspension bearing modeling method under a multi-parameter uncertainty condition comprises the steps of obtaining the rotor amplitude and air gap parameters of a magnetic suspension bearing, and calculating the amplitude air gap ratio of the magnetic suspension bearing; comparing the calculated amplitude air gap ratio with a set amplitude air gap threshold value, and if the former is greater than or equal to the latter, constructing a magnetic suspension bearing model under the condition of a high-order truncation error boundary and other uncertainty parameter boundaries; if the former is smaller than the latter, constructing a magnetic suspension bearing model under the condition of a magnetic bearing force uncertainty error boundary and other uncertainty parameter boundaries; and simulating the constructed corresponding magnetic suspension bearing model by adopting a matching control strategy so as to accurately control the magnetic suspension bearing and evaluate the dynamic response of the magnetic suspension bearing.

Description

technical field [0001] The invention belongs to the field of modeling of magnetic suspension bearings, and in particular relates to a modeling method and system of magnetic suspension bearings under the condition of uncertain multi-parameters. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Magnetic suspension bearings use electromagnetic force to suspend the rotor and ensure high-speed rotation of the rotor without mechanical friction and lubrication. It has broad application prospects in high-tech fields such as robots, precision machine tools, aerospace, and machinery manufacturing. Magnetic suspension bearings are favored when used in electric spindles because the speed can reach more than 60,000 revolutions and can be used for machining with special requirements. But such a high-speed rotor has higher requirements on the rotary driv...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F30/17G06F119/14
CPCG06F30/23G06F30/17G06F2119/14
Inventor 刘淑琴宗清会边忠国
Owner SHANDONG UNIV
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