Topic
Ring laser gyroscope
About: Ring laser gyroscope is a research topic. Over the lifetime, 2070 publications have been published within this topic receiving 18609 citations. The topic is also known as: Sagnac interferometer.
Papers published on a yearly basis
Papers
More filters
Patent•
16 Jul 1982TL;DR: In this paper, a resilient serpentine shaped tungsten wire is formed to match a short wire section to hold a ring laser gyroscope getter, positioned within a stepped oblong bore so that the getter is in firm contact with the bore surface at two points.
Abstract: A resilient serpentine shaped tungsten wire is formed to match a short wire section to hold a ring laser gyroscope getter. The getter-holder assembly is positioned within a stepped oblong bore so that the getter is in firm contact with the bore surface at two points. This prevents resonances of the getter or holder that might otherwise destroy the getter while subjected to vibrations.
11 citations
Patent•
14 May 1969TL;DR: In this article, the output of a laser gyroscope operated with a large amplitude oscillatory bias was obtained after an integer number of bias cycles, and the output was then used to calculate the number of cycles needed to obtain the desired output.
Abstract: Electronic apparatus processes the output of a laser gyroscope which is operated with a large amplitude oscillatory bias, to obtain the output after an integer number of bias cycles.
11 citations
25 Nov 2008
TL;DR: In this paper, the bias drift compensation of ring laser gyro (RLG) against external environment, especially thermal effects, was studied, and analytically the temperature change rate and temperature gradient has same effect on the gyro.
Abstract: This thesis studies the bias drift compensation of ring laser gyro (RLG) against external environment, especially thermal effects. Bias drift is linearly proportional to temperature, and temperature gradient. So thermal effects can be removed from gyro in terms of temperature, temperature gradient. This study also shows analytically the temperature change rate and temperature gradient has same effect on the gyro.
11 citations
TL;DR: In this article, a trapped energy gyroscope using energy trapping of thickness-shear vibrations excited by a parallel electric field is proposed, which is useful for highly reliable applications such as a yawing sensor for the vehicle stability control systems.
Abstract: A new type of gyroscope using energy trapping of thickness-shear vibrations excited by a parallel electric field is proposed. The vibrator of a trapped-energy gyroscope is constructed using a partially polarized piezoelectric ceramic plate and three electrodes on its surface, and the driving-detecting circuit includes the current detecting circuit. Prior to designing the trapped-energy gyroscope, a method of controlling the resonant frequency of the vibrator by means of the electrode dimensions was identified from the measured impedance characteristics. Based on this method, the trapped-energy gyroscope on a 25-mm-square and 1.5-mm-thick PZT plate is constructed. The detection sensitivity of 2.8 mV/deg/s, which is proportional to the applied angular velocity, is obtained when the driving voltage is 2 Vp-p and the gain of the detecting circuit is 72 dB. Although the edge of the vibrator is firmly attached to the base, the Qm of the resonance is over 900 because of the energy trapping effect. This trapped-energy gyroscope is useful for highly reliable applications such as a yawing sensor for the vehicle stability control systems.
11 citations
TL;DR: In this paper, the authors proposed and analyzed a gyroscope using active three-dimensional vertically coupled resonators (3D-VCRs), which allows for loss compensation, unidirectional propagation, and a larger sensing area while maintaining the same bulk volume.
Abstract: We propose and analyze a gyroscope using active three-dimensional vertically coupled resonators (3D-VCRs), which allows for loss compensation, unidirectional propagation, and a larger sensing area while maintaining the same bulk volume. For the ideal uniform case, the minimum detectable rotation rate ΔΩmin of the active 3D-VCR gyroscope can be decreased by above three orders of magnitude after optimization compared with the passive case. The minimal measurable rotation rates of the 3D-VCR gyroscope, the loss-compensated coupled resonator optical waveguide (LC-CROW) gyroscope, and the equivalent resonant waveguide optical gyroscope (RWOG) decrease with a higher number N of the resonators. Finally, it is shown that the uniform active 3D-VCR gyroscope has a better resolution ΔΩmin than the equivalent LC-CROW and RWOG.
11 citations