Method of generating and measuring static small force using down-slope component of gravity

Fujii, Yusaku

doi:10.1063/1.2746823

Cited by 21 publications

(15 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The wavelength division multiplexing (WDM) becomes invalid. Therefore, spatial frequency multiplexing (SFM) is often employed by using EFPIs with different cavity lengths [25]. However, the number of sensors multiplexed by the SFM method is limited.…”

Section: Fabrication and Principle Of Mafpimentioning

confidence: 99%

Simultaneous force and temperature measurement using optical microfiber asymmetrical interferometer

Chen

Gong

et al. 2014

Photonic Sens

View full text Add to dashboard Cite

A novel optical microfiber asymmetric Fabry-Perot interferometric (MAFPI) sensor is developed for simultaneous measurement of force and temperature. The MAFPI structure is formed by a weak fiber Bragg grating (FBG), a section of the microfiber, and a cleaved fiber end surface. The narrowband beam reflected from the low-reflectivity FBG and the broadband beam from the Fresnel reflection interfere lead to its unique sensing performance. The force sensing is performed by detecting the bending-loss induced fringe contrast changes, while the Bragg wavelength shift is employed for temperature measurement. Sensitivities of 9.8 pm/℃ and 0.025 dB/μN were obtained experimentally for temperature and force measurements, respectively.

show abstract

Section: Fabrication and Principle Of Mafpimentioning

confidence: 99%

Simultaneous force and temperature measurement using optical microfiber asymmetrical interferometer

Chen

Gong

et al. 2014

Photonic Sens

View full text Add to dashboard Cite

show abstract

“…The author has proposed a method, the "Levitation Mass Method" (LMM) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. In this method, the inertial force of a mass levitated using a pneumatic linear bearing is used as the reference force applied to the objects being tested, such as force transducers, materials and structures.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the dynamic properties of a Voice Coil Motor (VCM)

Fujii

Hashimoto

2007

2007 14th International Conference on Mechatronics and Machine Vision in Practice

Self Cite

View full text Add to dashboard Cite

The electrical and mechanical characteristics of a voice coil linear motor under moving conditions are evaluated using a method based on the Levitation Mass Method (LMM). The force generated by the actuator is measured as the inertial force of the mass, which is levitated with sufficiently small friction using a pneumatic linear bearing. The moving mass of the bearing is connected to the moving part of the actuator. During the measurement, only the Doppler shift frequency of the laser beam reflected by the mass is accurately measured using an optical interferometer. Then, the velocity, the position, the acceleration and the inertial force of the mass are calculated from the frequency. Simultaneously, the current and the voltage supplied to the actuator are measured.

show abstract

“…[4][5][6] In the dual-frequency laser Doppler interferometer, 1-6 one of the two frequencies of the laser is used as the signal beam and is changed by the Doppler shift, which is proportional to the velocity of the object. The other frequency is used as the reference beam.…”

Section: Introductionmentioning

confidence: 99%

Dual beat-frequencies laser Doppler interferometer

Takita

Ebara

Fujii

2011

Review of Scientific Instruments

View full text Add to dashboard Cite

A dual beat-frequencies laser Doppler interferometer which can measure high speed back and forth motion is proposed and demonstrated. In this interferometer, the two frequencies, f(1) and f(2), emitted by a Zeeman laser are introduced into the signal beams. They are changed to f(1)' and f(2)' by Doppler shift f(Doppler), which is proportional to the velocity of the object. The use of the two beat signals of |f(1)' - f(2)| and |f(1) - f(2)'| appearing at two photodetectors enables to measure the velocity over the limitation v(c) = λ(f(1) - f(2))/2.

show abstract

Method of generating and measuring static small force using down-slope component of gravity

Cited by 21 publications

References 15 publications

Simultaneous force and temperature measurement using optical microfiber asymmetrical interferometer

Simultaneous force and temperature measurement using optical microfiber asymmetrical interferometer

Evaluation of the dynamic properties of a Voice Coil Motor (VCM)

Dual beat-frequencies laser Doppler interferometer

Contact Info

Product

Resources

About