Random-rotational angle sensor based on fiber Bragg gratings

Sheng, Hao-Jan; Lin, Guei-Ru; Tsai, Pei-Tsung; Yang, Chen-An; Kuo, Ming-Hao; Sun, Haitao; Fu, Ming‐Yue; Liu, Wen‐Fung

doi:10.1109/oecc.2012.6276436

Cited by 3 publications

(2 citation statements)

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“…In addition to the above methods, sensorless detection techniques have been used for the measurement of torsional vibration, in which conventional physical quantity sensors are no longer used, but the stator current of the drive motor is directly extracted and analyzed to monitor the working condition of the rotating equipment and the motor itself [ 14 , 15 , 16 ]. Shi et al [ 14 ] used sensorless detection techniques to carry out a vibration monitoring experiment and verified the feasibility of the stator current signal of the motor to measure the vibration fault, which was more sensitive to torsional vibration than transverse vibration.…”

Section: Introductionmentioning

confidence: 99%

“…Fiber Bragg grating (FBG) has been applied to the measurement of torsional vibration. Sheng et al [ 15 , 16 ] designed a two FBG rotary position sensor based system to detect the rotating angle of a rotor. The two FBGs are affixed to the metal rod along the axial direction and separated from each other by 90 degrees on the circumference.…”

Section: Introductionmentioning

confidence: 99%

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A Fiber Bragg Grating Based Torsional Vibration Sensor for Rotating Machinery

Wang

Wei

et al. 2018

Sensors

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This paper proposes a new type of torsional vibration sensor based on fiber Bragg grating (FBG). The sensor has two mass ball optical fiber systems. The optical fiber is directly treated as an elastomer and a mass ball is fixed in the middle of the fiber in each mass ball fiber system, which is advantageously small, lightweight, and has anti-electromagnetic interference properties. The torsional vibration signal can be calculated by the four FBGs’ wavelength shifts, which are caused by mass balls. The difference in the two sets of mass ball optical fiber systems achieves anti-horizontal vibration and anti-temperature interference. The principle and model of the sensor, as well as numerical analysis and structural parameter design, are introduced. The experimental conclusions show that the minimum torsional natural frequency of the sensor is 27.35 Hz and the torsional vibration measurement sensitivity is 0.3603 pm/(rad/s2).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%