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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 pa

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040]Example one

[0041]This embodiment provides a method of magnetic levitation shaft in a multi-parameter uncertainty, including:

[0042]S101: Gets the amplitude and air gap parameters of the magnetic levitation bearing, and calculate the amplitude air gap ratio of the magnetic levitation bearing.

[0043]S102: Compare the calculated amplitude air gap ratio compared to the set amplitude air gap threshold, if the former is greater than or equal to the latter, the magnetic levitation bearing model in the case of the high-order truncation error and other uncertain parameters; if the former Small than the latter, the magnetic levitation bearing model in the case of the magnetic support uncertainty error and other uncertainty parameters; the constructed corresponding magnetic levitation bearing model is used to simulate the matching control strategy to accurately control the magnetic suspension. Bearings and assess the power response of the magnetic suspension bearing.

[0044]Other uncertainti...

Example Embodiment

[0110]Example 2

[0111]This embodiment provides a magnetic levitation bearing system in the case of multi-parameter uncertainty, including:

[0112]The amplitude air gap ratio calculation module is used to acquire the rotor amplitude and air gap parameters of the magnetic levitation bearing, and calculate the amplitude air gap ratio of the magnetic levitation bearing;

[0113]Model build module, which is used to compare the calculated amplitude air gap ratio to the set amplitude air gap threshold, if the former is greater than or equal to the latter, the magnetic suspension of the high-order truncation error and other uncertainty parameters are constructed. Bearing model; if the former is less than the latter, the magnetic levitation bearing model is constructed in the case of the magnetic support uncertainty error and other uncertain parameters; the constructed corresponding magnetic levitation bearing model is simulated by matching control strategy To accurately control the magnetic suspe...

Example Embodiment

[0116]Example three

[0117]This embodiment provides a computer readable storage medium, which stores a computer program that implements the multi-parameter uncertainty mode method in the case of the above embodiment as the processor is executed. 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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