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Academic literature on the topic 'Gyroscopes'
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Journal articles on the topic "Gyroscopes"
1
Usubamatov, Ryspek. "Physics of Gyroscope’s “Antigravity Effect”." Advances in Mathematical Physics 2019 (December 20, 2019): 1–7. http://dx.doi.org/10.1155/2019/4197863.
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The physics of gyroscopic effects are more complex than presented in existing mathematical models. The effects presented by these models do not match the real forces acting on gyroscopic devices. New research in this area has demonstrated that a system of inertial torques, which are generated by the rotating mass of spinning objects, acts upon a gyroscope. The actions of the system of inertial forces are validated by practical tests of the motions of a gyroscope with one side support. The action of external load torque on a gyroscope with one side support demonstrates that the gyroscope’s upward motion is wrongly called an “antigravity” effect. The upward motion of a gyroscope is the result of precession torque around its horizontal axis. The novelty of the present work is related to the mathematical models for the upward and downward motions of gyroscopes influenced by external torque around the vertical axis. This analytical research describes the physics of gyroscopes’ upward motion and validates that gyroscopes do not possess an antigravity property.
2
Kudelin, Igor, Srikanth Sugavanam, and Maria Chernysheva. "Rotation Active Sensors Based on Ultrafast Fibre Lasers." Sensors 21, no. 10 (2021): 3530. http://dx.doi.org/10.3390/s21103530.
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Gyroscopes merit an undeniable role in inertial navigation systems, geodesy and seismology. By employing the optical Sagnac effect, ring laser gyroscopes provide exceptionally accurate measurements of even ultraslow angular velocity with a resolution up to 10−11 rad/s. With the recent advancement of ultrafast fibre lasers and, particularly, enabling effective bidirectional generation, their applications have been expanded to the areas of dual-comb spectroscopy and gyroscopy. Exceptional compactness, maintenance-free operation and rather low cost make ultrafast fibre lasers attractive for sensing applications. Remarkably, laser gyroscope operation in the ultrashort pulse generation regime presents a promising approach for eliminating sensing limitations caused by the synchronisation of counter-propagating channels, the most critical of which is frequency lock-in. In this work, we overview the fundamentals of gyroscopic sensing and ultrafast fibre lasers to bridge the gap between tools development and their real-world applications. This article provides a historical outline, highlights the most recent advancements and discusses perspectives for the expanding field of ultrafast fibre laser gyroscopes. We acknowledge the bottlenecks and deficiencies of the presented ultrafast laser gyroscope concepts due to intrinsic physical effects or currently available measurement methodology. Finally, the current work outlines solutions for further ultrafast laser technology development to translate to future commercial gyroscopes.
3
Bai, Bing, Cun Li, and Yulong Zhao. "Development of V-Shaped Beam on the Shock Resistance and Driving Frequency of Micro Quartz Tuning Forks Resonant Gyroscope." Micromachines 11, no. 11 (2020): 1012. http://dx.doi.org/10.3390/mi11111012.
Full textAbstract:
The application of gyroscopes in harsh environments has always been a hot topic. As a high-quality material for manufacturing gyroscopes, quartz crystals need to be designed and optimized to meet the normal operation of gyroscopes in harsh environments. The Micro Electronics Mechanical System(MEMS) quartz tuning forks resonant gyroscope is one of the quartz gyroscopes. The elastic structure (V-shaped beam) between the anchor support point and tuning forks plays a vital role in the MEMS quartz tuning forks resonant gyroscope. This structure determines the natural frequency of the gyroscope, and more importantly, determines the shock resistance of the gyroscope structure. In this article, the MEMS quartz tuning forks gyroscope with different V-shaped beam thicknesses are simulated and analyzed by finite element analysis simulation software. After the modal analysis and shock simulation (the half-cycle sine shock pulse with amplitude of 1500 g (g is the acceleration of gravity) and duration of 2 ms in the six shock directions), the results show that when the beam thickness is 80 μm, the maximum stress is 94.721 MPa, which is less than the failure stress of quartz crystal. The gyroscope’s shock resistance is verified through shock testing.
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Sinel’nikov, A. O., A. A. Medvedev, Yu D. Golyaev, M. E. Grushin, and D. I. Chekalov. "Thermal Zero Drifts in Magneto-Optical Zeeman Laser Gyroscopes." Giroskopiya i Navigatsiya 29, no. 4 (2021): 46–55. http://dx.doi.org/10.17285/0869-7035.0079.
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The paper is devoted to the current problem of gyroscopy in general and its magneto-optical laser branch in particular: further increase in the accuracy of gyroscopes while maintaining their stable operation in real operating conditions. The problem is considered and studied by the example of the magneto-optical Zeeman laser gyroscope, which is one of the effective types of laser gyroscope. The development and improvement of the technolo-gy for creating this type of gyroscopes makes it possible to significantly re-duce the sources of the gyroscope zero drift and yet, retain the other properties and performance parameters. The study and validation of the possibility of a significant reduction in the gyroscope key control currents, such as the pumping currents of the active medium and the control currents of frequency bias, will increase the measuring accuracy of the gyroscope, and, accordingly, the accuracy of navigation systems based on them.
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Chikovani, Valerii, and Serhii Golovach. "The state and prospects of the development of vibration gyroscopy in Ukraine and in the world." MECHANICS OF GYROSCOPIC SYSTEMS, no. 41 (December 28, 2022): 61–87. http://dx.doi.org/10.20535/0203-3771412021269245.
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The work analyzes the development and current state of vibration gyroscopes in Ukraine and in the world. The development of quartz and metallic resonators of various diameters for vibrating gyroscopes is presented and analyzed. In addition, for comparison with world practice, the developments of quartz and metallic resonators of advanced foreign companies, leaders in this field, are given. The block diagrams of the standing wave control system of the vibrating gyroscope in three modes of operation: as the angle rate sensor, as the rate-integrating or whole angle mode sensor and the differential mode are considered. In the perspective, the possibility of combining all three modes in one gyroscope with automatic switching from one mode to another one is shown, for maximum use of the advantages of each mode in dependence of environmental conditions and motion parameters. The test results of gyroscope with a metallic resonator made in Ukraine, on the effect of a wide range of external disturbances are presented. The development prospects of vibrating gyroscopes and systems based on them are evaluated. The paper draws conclusions about the state and prospects for the development of vibrating gyroscopy in Ukraine.
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Xu, Yingyu, Jing Lin, Chunhua He, Heng Wu, Qinwen Huang, and Guizhen Yan. "Design of a Shock-Protected Structure for MEMS Gyroscopes over a Full Temperature Range." Micromachines 15, no. 2 (2024): 206. http://dx.doi.org/10.3390/mi15020206.
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Impact is the most important factor affecting the reliability of Micro-Electro-Mechanical System (MEMS) gyroscopes, therefore corresponding reliability design is very essential. This paper proposes a shock-protected structure (SPS) capable of withstanding a full temperature range from −40 °C to 80 °C to enhance the shock resistance of MEMS gyroscopes. Firstly, the shock transfer functions of the gyroscope and the SPS are derived using Single Degree-of-Freedom and Two Degree-of-Freedom models. The U-folded beam stiffness and maximum positive stress are deduced to evaluate the shock resistance of the silicon beam. Subsequently, the frequency responses of acceleration of the gyroscope and the SPS are simulated and analyzed in Matlab utilizing the theoretical models. Simulation results demonstrate that when the first-order natural frequency of the SPS is approximately one-fourth of the gyroscope’s resonant frequency, the impact protection effect is best, and the SPS does not affect the original performance of the gyroscope. The acceleration peak of the MEMS gyroscope is reduced by approximately 23.5 dB when equipped with the SPS in comparison to its counterpart without the SPS. The anti-shock capability of the gyroscope with the SPS is enhanced by approximately 13 times over the full-temperature range. After the shock tests under the worst case, the gyroscope without the SPS experiences a beam fracture failure, while the performance of the gyroscope with the SPS remains normal, validating the effectiveness of the SPS in improving the shock reliability of MEMS gyroscopes.
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Ünker, F., and O. Çuvalcı. "Optimum Tuning of a Gyroscopic Vibration Absorber Using Coupled Gyroscopes for Vibration Control of a Vertical Cantilever Beam." Shock and Vibration 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/1496727.
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This paper deals with the investigation of optimum values of the stiffness and damping which connect two gyroscopic systems formed by two rotors mounted in gimbal assuming negligible masses for the spring, damper, and gimbal support. These coupled gyroscopes use two gyroscopic flywheels, spinning in opposing directions to have reverse precessions to eliminate the forces due to the torque existing in the torsional spring and the damper between gyroscopes. The system is mounted on a vertical cantilever with the purpose of studying the horizontal and vertical vibrations. The equation of motion of the compound system (gyro-beam system) is introduced and solved to find the response measured on the primary system. This is fundamental to design, in some way, the dynamic absorber or neutralizer. On the other hand, the effect of the angular velocities of the gyroscopes are studied, and it is shown that the angular velocity (spin velocity) of a gyroscope has a significant effect on the behavior of the dynamic motion. Correctness of the analytical results is verified by numerical simulations. The comparison with the results from the derivation of the corresponding frequency equations shows that the optimized stiffness and damping values are very accurate.
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Šklíba, Jan, and Jan Škoda. "About Dynamics Problems of the Vibroisolation System with the Gyroscopic Stabilizer." Solid State Phenomena 164 (June 2010): 116–20. http://dx.doi.org/10.4028/www.scientific.net/ssp.164.116.
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The fundamental condition of the sufficient vibration-isolation is that all natural frequencies of a system are placed outside the interval of exciting frequencies. By the application of a gyroscopic stabilizer depend some natural frequencies on the gyroscope impulse moment. There is described how to reach the fundamental condition by the help of sufficient magnitude of gyroscopes impulse moment.
9
Yuan, Zhenkun, Jian Chen, Dingbo Chen, Shuolong Zhu, Junbo Yang, and Zhenrong Zhang. "An Ultra-Low-Loss Waveguide Based on BIC Used for an On-Chip Integrated Optical Gyroscope." Photonics 10, no. 4 (2023): 453. http://dx.doi.org/10.3390/photonics10040453.
Full textAbstract:
The development of integrated optical technology and the continuous emergence of various low-loss optical waveguide materials have promoted the development of low-cost, size, weight, and power optical gyroscopes. However, the losses in conventional optical waveguide materials are much greater than those in optical fibers, and different waveguide materials often require completely different etching processes, resulting in severely limited gyroscope performance, which is not conducive to the monolithic integration of gyroscope systems. In this paper, an ultra-low-loss Archimedean spiral waveguide structure is designed for an on-chip integrated optical gyroscope by using the high Q value and low-loss optical characteristics of the bound state in the continuum (BIC). The structure does not require the etching of high-refractive-index optical functional materials, avoiding the etching problem that has been difficult to solve for a long time. In addition, the optical properties of the BIC straight and the BIC bent waveguide are simulated using the finite element method (FEM) to find the waveguide structural parameters corresponding to the BIC mode, which is used to design the integrated sensing coil and analyze the gyroscope performance. The simulation results show that the gyroscope’s sensitivity can reach 0.6699°/s. This research is the first time a BIC optical waveguide has been used for an integrated optical gyroscope, providing a novel idea for the monolithic integration of optical gyroscopes.
10
Chikovani, Valerii, Sergii Ponomarenko, Sergiy Golovach, and Pavlo Pishchela. "Mutual calibration of the zero offset of two coaxial gyroscopes in motion." MECHANICS OF GYROSCOPIC SYSTEMS, no. 47 (May 15, 2024): 45–55. http://dx.doi.org/10.20535/0203-3771472024307712.
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The paper considers a method for systematic component correction of two coaxial gyroscope biases in motion under the most general assumptions about their models. This method allows combining heterogeneous MEMS and non-MEMS or optical gyroscopes into a single unit. The algorithm that implements this method requires initial calibration at the stop, for example, based on external information. Further, the algorithm uses the combined processing of data from the redundant sensors to provide more accurate angular rate of the so-called “virtual” gyroscope. The accuracy of the “virtual” gyroscope significantly exceeds the usual average value of these gyroscopes’ data. An application of the correction method to the measurement results of two coaxial metallic resonators' vibratory gyroscopes is given.