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Online elastic mode testing system for magnetically suspended electromechanical equipment

A technology of elastic mode and electromechanical equipment, applied in the field of online testing system for elastic mode of magnetic levitation electromechanical equipment

Inactive Publication Date: 2011-08-31
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem of the present invention is: to overcome the deficiencies of the existing testing technology, to provide an online testing system for simulating the unbalanced vibration disturbance and random noise disturbance of the magnetic levitation rotor, and to detect the elastic mode of the magnetic levitation electromechanical equipment

Method used

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  • Online elastic mode testing system for magnetically suspended electromechanical equipment
  • Online elastic mode testing system for magnetically suspended electromechanical equipment
  • Online elastic mode testing system for magnetically suspended electromechanical equipment

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Embodiment Construction

[0041] like figure 1 As shown, the present invention includes a magnetic suspension rotor 13, a magnetic suspension system housing 14, a magnetic suspension control system 15, an excitation signal generation module 19, a vibration detection unit 7, and an elastic mode identification module 18; the magnetic suspension control system 15 consists of a position loop 16 and a current The position loop 16 is composed of a position detection unit 2 and a magnetic bearing controller 1, the current loop 17 is composed of a current detection unit 3, a current loop controller 4, a power amplifier 20 and a magnetic bearing coil 5, and elastic mode recognition Module 18 is composed of spectrum analysis unit 8 and modal parameter extraction unit 9 , and excitation signal generation module 19 is composed of white noise excitation unit 10 , sweep frequency excitation unit 11 and excitation mode selection unit 12 . Designate end A as any end of the maglev electromechanical equipment, and end B...

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Abstract

The invention discloses an online elastic mode testing system for magnetically suspended electromechanical equipment. The online elastic mode testing system mainly comprises a magnetically suspended system shell, a magnetically suspended rotor, a magnetically suspended control system, a signal excitation module, a vibration detection unit and an elastic mode recognizing module. The signal excitation module is integrated in the magnetically suspended control system, excitation force is applied to the rotor, unbalanced disturbance of translation and rotation and random environmental disturbance of the rotor are simulated, frequency sweeping excitation is increased under the gyroscopic action of a high-speed rotating rigid body, and output signals of a displacement sensor and the vibration detection unit are transmitted to the elastic mode recognizing module to obtain the translation and rotation elastic mode parameters of the rotor and the shell. By adopting the online elastic mode testing system, the influences of noise and unbalanced vibration on an elastic mode can be simulated close to the practical running state of a magnetically suspended, the frequency sweeping excitation output is increased, the near frequency discrimination of elastic modes is enhanced, a rotation elastic mode and a translation elastic mode can be distinguished, and the elastic modes of the rotor and the shell can be tested simultaneously.

Description

technical field [0001] The invention relates to an online testing system for the elastic mode of magnetic levitation electromechanical equipment. While simulating various disturbances of the magnetic levitation system, it can conduct online high-precision testing of the elastic mode parameters of the rotor part and the static part of the magnetic levitation electromechanical equipment, and is especially suitable for obtaining Elastic modal parameters of magnetic levitation supporting electromechanical equipment such as magnetic levitation motors, magnetic levitation control moment gyroscopes, etc. under actual working conditions. Background technique [0002] Compared with the traditional mechanical bearing support technology, the magnetic suspension bearing has the characteristics of no contact, no lubrication, no wear, small vibration, low power consumption, allowing the rotor to rotate at high speed and active control. It is used in machine tools, turbomachinery, centrifug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02G01H11/06
Inventor 房建成王英广郑世强任昌建曹国恩张袆
Owner BEIHANG UNIV
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