JIN Yuan-qiang, LIU Li-hua, MA Hui-ping, et al. Fiber sensor used in detecting radial vibration of high rotating speed shaft[J]. Optics and precision engineering, 2007, 15(1): 95-99.
JIN Yuan-qiang, LIU Li-hua, MA Hui-ping, et al. Fiber sensor used in detecting radial vibration of high rotating speed shaft[J]. Optics and precision engineering, 2007, 15(1): 95-99.DOI:
Optical fiber measuring technique is adopted to detect radial vibration of a high speed rotating shaft in aerial impeller pump and the principle of the detecting system is introduced in detail in this paper. A new type fiber gauge head has been developed
and relevanted compensatory approach is given. Also
the displacement characteristic modulating function is educed and the emulator curve is provided through studying of the system. Experimental results show that the system can eliminate the infection from light intensity fluctuation
fiber flexural loss and surface reflection index and detect the radial vibration of high speed rotating shaft in aerial impeller pump under the surrounding of strong electromagnetic interference and high temperature. Experiments also show that amplitude of radial vibration increases monotonously with rotation speed of the shaft ranging from 1 000 r/min to 10 000 r/min
it agrees with the physical situation.
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references
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