Cavity element for resonant micro optical gyroscope

Ford, C.; Ramberg, R.; Johnson, Klein; Bergulund, W.; Ellerbusch, Benjamin; Schermer, Ross T.; Gopinath, A.

doi:10.1109/62.891978

Cited by 10 publications

(2 citation statements)

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“…(Kikuchi et al 2005;Ford et al 2000;Tsai and Wu 2008;Seshia et al 2002;Clark et al 1996). Unlike the traditional gyroscope appearance, numerous modern gyroscopes, produced by micro-fabrication technique instead, have been reported so that miniaturization and compound thin films have become the trend at the commercial markets.…”

Section: Introductionmentioning

confidence: 94%

Magnetic actuator design for single-axis micro-gyroscopes

2009

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An innovative magnetically levitated system design is presented in this paper. The proof mass, used as the seismic detection components for gyroscopes, is levitated by the presented micro-coil actuator so that the concerns that mechanical fatigue, asymmetry and misalignments, which are inevitably present in the traditional mechanical springs design, can be ruled out. In addition, the limited range of dual-axis motion of the proof mass is completely relaxed and therefore the resolution and sensitivity of the gyroscope can be greatly upgraded. That is, the proof mass can be much at higher frequencies and the stroke of the sense-mode motion can be more enlarged, in comparison with the conventional design (i.e., mechanical springs). In addition, self-sensing technique is employed to replace the gap sensors which provide the feedback signal for position regulation of the proof mass, for the sake of cost-down for mass production. A sliding mode control strategy is included to account for the effects of nonlinearity of the maglev system dynamics and hysteresis uncertainty of the micro-coil actuator. The proposed controller is verified by computer simulations and experiments to illustrate its superior capability to stabilize the inherently unstable maglev system and ensure fast response for the lateral position regulation of the seismic proof mass.

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Section: Introductionmentioning

confidence: 94%

Magnetic actuator design for single-axis micro-gyroscopes

2009

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“…The Sagnac effect is enhanced by lightwave propagation in the resonator several times in the RMOG, leading to the same performance as the interferometer fiber optic gyro (IFOG) with a sensing coil that is almost 100 times longer. 12,13 Although the laser sources mentioned have superior performance such as narrow linewidth and low frequency noise, they are too large for the miniaturization of the RMOG system. Although the micro-electromechanical system (MEMS) gyro has captured many rate-gyro applications because of small size and low cost, it lacks the precision and dynamic performance needed for stabilization and navigation applications.…”

Section: Introductionmentioning

confidence: 99%

Experiments on resonator micro-optic gyro using external cavity laser diode

et al. 2012

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Based on the Sagnac effect, a resonator micro-optic gyro (RMOG) is a novel optical sensor used for measuring rotation velocity. Due to the advantages of small volume, narrow linewidth, and tunable wavelength, an external cavity laser diode (ECLD) is adopted. By analyzing the working mechanism of the ECLD, a new scheme of constant temperature and driving current tuning control is determined. First, a theoretical resonance curve is calculated. Then the laser frequency is successfully tracked in the RMOG. Finally, a bias stability of 1.6 deg ∕s over 600 s is obtained in the RMOG with a silica waveguide resonator of 12.8 cm.

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Research on integrated optical gyroscope

Wang

Xia

2008

2008 2nd International Symposium on Systems and Control in Aerospace and Astronautics

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Cavity element for resonant micro optical gyroscope

Cited by 10 publications

References 0 publications

Magnetic actuator design for single-axis micro-gyroscopes

Magnetic actuator design for single-axis micro-gyroscopes

Experiments on resonator micro-optic gyro using external cavity laser diode

Research on integrated optical gyroscope

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