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Online dynamic balance detector based on hardware phase lock high precision magnetic suspension flying wheel

A detection device and magnetic levitation technology, which are used in static/dynamic balance testing, measuring devices, and machine/structural component testing. Improve the detection accuracy, reduce the computational complexity of the processing chip, and achieve the effect of small size

Inactive Publication Date: 2009-01-14
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to overcome the shortcomings of the existing off-line dynamic balance that cannot measure large-volume rotors and the detection accuracy of off-line dynamic balance is not high, and provide a high-precision maglev flywheel on-line dynamic balance detection device using rotor displacement signals

Method used

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  • Online dynamic balance detector based on hardware phase lock high precision magnetic suspension flying wheel
  • Online dynamic balance detector based on hardware phase lock high precision magnetic suspension flying wheel
  • Online dynamic balance detector based on hardware phase lock high precision magnetic suspension flying wheel

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Embodiment Construction

[0020] Such as figure 1 As shown, the hardware module of the present invention is mainly composed of a photoelectric switch 1, a phase-locking and frequency multiplication module 5, a DSP development module 8, a displacement signal interface circuit 11, a displacement sensor 12, and a level conversion chip 13. Wherein the phase-locking and frequency multiplication module 5 includes a pulse shaping circuit 2, a monostable trigger circuit 3, a phase-locking circuit 4 and an external frequency division circuit 14, and the DSP development module 8 mainly includes a DSP chip 9, an AD chip 10, an externally expanded RAM 6 and Composed of externally expanded FLASH7.

[0021] Such as figure 2 As shown, the control principle of the present invention is given. Blacken a certain position of the rotor, which is called the reference position. The photoelectric switch generates a reference pulse signal when the rotor turns over the reference position, and the pulse signal generates a fr...

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Abstract

The high precision on-line dynamic balance detector based on hardware phase locking for magnetic suspension flywheel rotor has one photoelectronic sensor to generate one pulse once the rotor rotates through the reference position, one pulse phase locking and frequency doubling module to generate one phase locking frequency doubling signal, one A / D converter chip, one displacement signal processing module to sample the signal, one DSP module to process the data in certain algorithm so as to calculate the amplitude and phase of the unbalance amount. The present invention can detect the unbalance amount of the magnetic suspension flywheel under set rotation speed, and has powerful data processing capacity, high operation speed, capacity of reaching high balance precision and capacity of raising the control precision of magnetic suspension flywheel rotor.

Description

technical field [0001] The invention relates to a high-precision maglev flywheel online dynamic balance detection device based on hardware phase-locking, which is used for high-precision on-line detection of the unbalanced amount of the maglev flywheel rotor. The device is also suitable for other flywheel rotor dynamic balance online detection with displacement sensors. . Background technique [0002] The flywheel is the basic attitude control actuator on small and medium-sized satellites. Compared with the traditional mechanical bearing flywheel, the maglev flywheel has the advantage of active vibration control, so it has broad application prospects on high-precision satellites. In addition, the magnetic bearing has no friction, which avoids the wear of the mechanical bearing itself due to friction. Its reliability depends on the reliability of the electronic components of the control system, so it has a longer service life than the mechanical bearing flywheel. [0003] Du...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M1/14G01M1/16
Inventor 房建成韩辅君刘刚刘虎田希晖
Owner BEIHANG UNIV
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