Integrated magnetic suspension rotor dynamic displacement measuring device

A magnetic levitation rotor, dynamic displacement technology, which is applied to measurement devices, electrical devices, mechanical bearing testing, etc. In order to improve the measurement accuracy and reliability, improve the anti-interference ability and reliability, and improve the anti-interference ability

Inactive Publication Date: 2007-03-14
WUHAN UNIV OF TECH
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Problems solved by technology

This structure and measurement method has the following disadvantages: the weak analog signal output by the displacement sensor is easy to be connected with various interference signals during the long-distance transmission process, which increases the error of the measurement signal and reduces the reliability; the frequency of the excitation source of each channel is difficult. To be exactly the same, there will be mutual interference between channels during long-term transmission; the measurement errors ge

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  • Integrated magnetic suspension rotor dynamic displacement measuring device
  • Integrated magnetic suspension rotor dynamic displacement measuring device
  • Integrated magnetic suspension rotor dynamic displacement measuring device

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Embodiment Construction

[0022] In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the examples, but the content of the present invention is not limited to the following examples.

[0023] An integrated magnetic levitation rotor dynamic displacement measurement device includes a first measurement circuit board, a second measurement circuit board, a support frame, a radial displacement sensor and an axial displacement sensor.

[0024] In order to improve the real-time performance and measurement accuracy of the displacement measurement signal, in the present invention, the first microprocessor 12, the second microprocessor 17 select high-speed DSP chip TMS320VC5402PGE100 for use, and this chip clock cycle reaches 10ns; The first A / D converter 11, the second A / D converter 16 selects high-speed high-precision chip ADS5520 for use, and the sampling rate of this chip is up to 125MSPS; the resolution reaches 12 bits; the ...

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Abstract

The integrated dynamic displacement measurement device for magnetic suspension rotor comprises a measurement circuit, which includes: an input port connected with an output port of sine-wave generator, a drive module with output port connected at least four or more radial displacement sensors and one axial sensor. Besides, it also includes a full-bridge rectification filter module, a signal modulation module, a sampling holder, a multiplex switch, an A/D converter, and a CPU. This invention has well performance with low cost.

Description

technical field [0001] The invention relates to a digital measuring instrument, in particular to a dynamic displacement measuring device of a magnetic levitation rotor, which is especially suitable for measuring the dynamic displacement of the magnetic levitation rotor in various magnetic force bearing systems. Background technique [0002] Magnetic bearing is a new type of high-performance electromechanical integrated bearing that uses electromagnetic principles to stably suspend the supported part in space, so that there is no mechanical contact between the supported part and the supported part. It has high precision, low noise, less heat, and The incomparable advantages of ordinary bearings such as low power consumption. In the magnetic bearing system, the displacement signal of the magnetically suspended rotor is an important basis for controlling the stable suspension and high-speed rotation of the magnetic bearing. Therefore, the reliability, stability and accuracy of ...

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Application Information

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IPC IPC(8): G01B7/02G01M13/04
Inventor 王春麟胡业发王晓光周祖德江征风丁国平
Owner WUHAN UNIV OF TECH
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