Aeronautical Engineering

Advances in Gyroscope Technologies by Mario N. Armenise, Caterina Ciminelli, Francesco Dell'Olio,

By Mario N. Armenise, Caterina Ciminelli, Francesco Dell'Olio, Vittorio M. N. Passaro

This monograph collects and significantly reports the most effects received through the medical neighborhood in gyroscope applied sciences learn box. It describes architectures, layout suggestions and fabrication know-how of angular cost sensors proposed in literature. MEMS, MOEMS, optical and mechanical applied sciences are mentioned including attainable functionality. The ebook additionally consideres destiny learn developments aimed to hide particular purposes. The booklet is meant for researchers and Ph.D. scholars drawn to modelling, layout and fabrication of gyros. The booklet could be a priceless schooling aid in a few collage classes all in favour of gyro technologies.

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Resonator fiber optic gyro using digital serrodyne modulation. J. Lightwave Technol. 15, 466–473 (1997) 26. : Open-loop experiments in a resonator fiber-optic gyro using digital triangle wave phase modulation. IEEE Photonic Technol. Lett. 19, 1685–1687 (2007) 27. : The passive ring resonator fiber optic gyro using modulatable highly coherent laser diode module. Proc. SPIE 1585, 153–162 (1992) 28. : Passive fiber-optic ring resonator for rotation sensing. Optics Lett. 8, 644–646 (1983) 29. : Hollow core fiber optic ring resonator for rotation sensing.

Polarization instabilities in CW and CCW beams degrade IFOG performance. The use of polarization maintaining fibers allows to solve this problem. The main IFOG components are the fiber coil and the light source. 1 Interferometric Fiber Optic Gyros (IFOGs) 35 than standard telecom fiber. Polarization maintaining fiber enables to reach better accuracy and it is always used in high performance IFOGs. The employment of single-mode air-core photonic bandgap (PBG) fibers to replace conventional fibers has been recently proposed to enhance IFOG performance [17, 18].

When this locking is achieved, Dx1 - Dx2 is proportional to the angular rate. 2 Resonant Fiber Optic Gyros (RFOGs) 43 Fig. 12 Normalized quadrature component (B1) versus [(x0 ? Dx1)/2p - mCW q ] The read-out architecture based on phase modulation spectroscopy can also be modified with respect to that shown in Fig. 9. In particular the frequency shifting can be obtained by tuning the laser. In this case AOM1 and AOM2 are not necessary [24]. Moreover the modulating electric signal driving PM1 and PM2 may have either a digital serrodyne or a triangle waveform [25, 26].

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