NDLI: Novel gyroscopic mounting for crystal oscillator (payload) applied in high dynamic host vehicle (platform) to improve its output stability

Content Provider	IEEE Xplore Digital Library
Author	Abedi, M. Tian Jin
Copyright Year	2015
Description	Author affiliation: Sch. of Electron. & Inf., Beihang Univ., Beijing, China (Abedi, M.; Tian Jin)
Abstract	When crystal oscillator applied in high dynamic host vehicle, dynamic loads impact its short and medium-term stability. In order to suppression and/or reduction these impacts, gyroscopic mounting is proposed to install oscillator on it. One of the main parameters which affect dynamic loads impacts on oscillator output is crystal g-sensitivity vector. Therefore, at first, statistical study has been accomplished on this parameter for SC-cut crystals which used in high dynamic oscillators. This study reveals that the angle between this vector and crystal surface (φ) nearly follows Rayleigh distribution with 1σ=19°. Thus, this vector tends to be close to crystal surface not perpendicular to it. Furthermore the analysis results of using gyro-mounting shows the acceptable results for quartz crystals with \|φ\|<;2σ=38° (85%). To prove gyro efficiency, its effect on each dynamic load is analyzed separately. The results of related analyses reveal that gyro shows its best for attitude change of host vehicle, such that it totally suppresses relevant disturbances. In the case of steady state load, sinusoidal and random vibrations, gyro best effects appear for \|φ\|<;30° and β angles which are not too close to 90°. Totally when high dynamic crystal oscillator is installed on gyro-mounting, the probability of observing instability on its output is reduced.
Starting Page	139
Ending Page	144
File Size	2088345
Page Count	6
File Format	PDF
e-ISBN	9781479988662
DOI	10.1109/FCS.2015.7138809
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-04-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Crystals Vehicle dynamics Vibrations Vehicles Phase noise Stability analysis gyrscope crystal oscillator SC-cut high dynamic short-term instability frequency jitter phase noise random vibration sinusoidal vibrations steady state acceleration
Content Type	Text
Resource Type	Article

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