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Journal articles on the topic 'Gyrostabilizer'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 May 2022

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1

Li, Biao, Xianku Zhang, Jun Wang, and Ning Chen. "Anti-Roll Characteristics of Marine Gyrostabilizer Based on Adaptive Control and Hydrodynamic Simulation." Journal of Marine Science and Engineering 10, no. 1 (January 9, 2022): 83. http://dx.doi.org/10.3390/jmse10010083.

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The gyrostabilizer produces the anti-roll effect through the precession output moment generated by a high-speed rotating flywheel. As a floating-base multi-body system composed of ship and gyrostabilizer, the recent research that has only focused on the control strategies or multi-body dynamics is obviously not comprehensive. This study presents an adaptive controller based on the variable gain control strategy for a marine gyrostabilizer installed on a port salvage tug. The variable gain control strategy controlled the flywheel precession output moment of the gyrostabilizer and thereby of the precession process, to reduce the ship roll motion effectively. Furthermore, a full-system hydrodynamic model of a gyrostabilizer-ship-wave based on three-dimensional numerical wave flume technology was innovatively established to evaluate its anti-roll performance under irregular wave conditions. The simulation results show that, for the sea state considered, the increase of spin rate of gyrostabilizer flywheel improved the anti-roll effect significantly. The average anti-roll rate of the gyrostabilizer decreased with the increase of significant wave height, wave period and wave encounter angle.

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2

Котов and P. Kotov. "RESEARCHES OF CORRECTED GYROSCOPIC SYSTEMS AND SPECIAL ASPECTS OF GYROFRAME MODELLING WITH NON-RESONANT PARAMETERS." Modeling of systems and processes 8, no. 1 (July 2, 2015): 22–33. http://dx.doi.org/10.12737/12016.

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In the basis of an indicator and power gyrostabilizer it is considered to be important the capacity for work of a monoaxial gyrostabilizer, presented with an autonomous system of the connected equations modelled with the help of the matlab, by the calculation of which the results of gyrostabilizer model tests with the inertia constant moments are offered

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3

Yudachev, S. S., N. A. Gordienko, and F. M. Bosy. "Application of neural networks in industrial production." Glavnyj mekhanik (Chief Mechanic), no. 6 (May 25, 2021): 10–17. http://dx.doi.org/10.33920/pro-2-2106-01.

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The article describes an algorithm for the synthesis of neural networks for controlling the gyrostabilizer. The neural network acts as an observer of the state vector. The role of such an observer is to provide feedback to the gyrostabilizer, which is illustrated in the article. Gyrostabilizer is a gyroscopic device designed to stabilize individual objects or devices, as well as to determine the angular deviations of objects. Gyrostabilizer systems will be more widely used, as they provide an effective means of motion control with a number of significant advantages for various designs. The article deals in detail with the issue of specific stage features of classical algorithms: selecting the network architecture, training the neural network, and verifying the results of feedback control. In recent years, neural networks have become an increasingly powerful tool in scientific computing. The universal approximation theorem states that a neural network can be constructed to approximate any given continuous function with the required accuracy. The back propagation algorithm also allows effectively optimizing the parameters when training a neural network. Due to the use of graphics processors, it is possible to perform efficient calculations for scientific and engineering tasks. The article presents the optimal configuration of the neural network, such as the depth of memory, the number of layers and neurons in these layers, as well as the functions of the activation layer. In addition, it provides data on dynamic systems to improve neural network training. An optimal training scheme is also provided.

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4

Ryzhkov, Lev, and Igor Karpenko. "Complementary filter synthesis of gyrostabilizer." Information systems, mechanics and control, no. 19 (October 15, 2018): 114–21. http://dx.doi.org/10.20535/2219-3804192018169623.

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5

Карпенко, Ігор Миколайович, and Лев Михайлович Рижков. "Complementary filter synthesis of gyrostabilizer." MECHANICS OF GYROSCOPIC SYSTEMS, no. 38 (November 11, 2019): 5–12. http://dx.doi.org/10.20535/0203-3771382019146935.

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6

Ivanovich, Epikhin Aleksey, Mihail-Vlad Vasilescu, and Ionut Cristian Scurtu. "Ship stabilization technology a feature used for energy efficiency." IOP Conference Series: Earth and Environmental Science 968, no. 1 (January 1, 2022): 012007. http://dx.doi.org/10.1088/1755-1315/968/1/012007.

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Abstract From this article the reader can find information regarding ship stabilization technology. Types of stabilization system, comparison between different types of gyrostabilizers, the technical features that differentiate modern marine gyrostabilizer products, advantages and disadvantages of active stabilizers. Shipping is one of the world’s most polluting industries. More than 90000 ships which are crossing the oceans each year, using classical propulsion, are burning nearly two billion barrels of fossil fuels. As a result, is the belch out of large quantities of polluting emissions into the air, principally in the form of sulphur dioxide, nitrogen oxides and particulate matter, which have been steadily rising and endangering human health especially on the principle shipping routes. They create between 2 and 3 per cent of the world’s total greenhouse gas emissions such as carbon dioxide, contributing to global warming. In order to decrease the amount of burning fuel for the navy industry, it appeared the ship stabilization technology, which helps the ship to reduce the rolling created by wind and waves, so it will reduce the quantity of burn fuel and last but not least will reduce the polluting emissions, in the same time for the owners increasing the economic efficiency of the ship.

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7

Iguchi, Nobuhiro, Dai Homma, and Yoshio Kondoh. "A single-wheeled mobile robot with a gyrostabilizer." Advanced Robotics 6, no. 3 (January 1991): 371–72. http://dx.doi.org/10.1163/156855392x00204.

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8

Çuvalcı, Olkan, Faruk Ünker, Turgut Batuhan Baturalp, Utku Gülbulak, and Atila Ertaş. "Modal Control of Cantilever Beam Using a Gyrostabilizer." Sound&Vibration 55, no. 4 (2021): 281–94. http://dx.doi.org/10.32604/sv.2021.015705.

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9

TAKASHIMA, Satoshi, Jun HORIE, and Takehito FUKUDA. "Restoring Force Controllable Weight Gyrostabilizer Using Electro-Rheological Fluid." Transactions of the Japan Society of Mechanical Engineers Series C 66, no. 652 (2000): 3919–24. http://dx.doi.org/10.1299/kikaic.66.3919.

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10

KOIWAI, Kenta, Chiharu TADOKORO, and Takuo NAGAMINE. "A passive gyrostabilizer with a dynamic vibration absorber for torsional vibrations." Proceedings of Mechanical Engineering Congress, Japan 2017 (2017): S1140105. http://dx.doi.org/10.1299/jsmemecj.2017.s1140105.

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11

Anisimov, Yan Olegovich. "DYNAMICS OF NEURAL NETWORK BASED GYROSTABILIZER WITH A DISTORTED MEASUREMENT SIGNAL." V mire nauchnykh otkrytiy, no. 4 (April 6, 2015): 74. http://dx.doi.org/10.12731/wsd-2015-4-3.

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12

Shcherban’, I. V., and O. G. Shcherban’. "A Gyrostabilizer Drift Model: Autonomous Identification by the Inverse Sensitivity Method." Automation and Remote Control 66, no. 5 (May 2005): 810–18. http://dx.doi.org/10.1007/s10513-005-0125-y.

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13

Palraj, Manmathakrishnan, and Panneerselvam Rajamanickam. "Motion control of a barge for offshore wind turbine (OWT) using gyrostabilizer." Ocean Engineering 209 (August 2020): 107500. http://dx.doi.org/10.1016/j.oceaneng.2020.107500.

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14

Sokolov, S. V. "Analytical determination of time-dependent functions of drifts of a triaxial gyrostabilizer." Journal of Applied Mathematics and Mechanics 56, no. 6 (January 1992): 955–57. http://dx.doi.org/10.1016/0021-8928(92)90133-s.

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15

Palraj, Manmathakrishnan, and Panneerselvam Rajamanickam. "Motion control studies of a barge mounted offshore dynamic wind turbine using gyrostabilizer." Ocean Engineering 237 (October 2021): 109578. http://dx.doi.org/10.1016/j.oceaneng.2021.109578.

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16

Ünker, Faruk, and Olkan Çuvalcı. "Optimum Tuning of a Gyroscopic Vibration Absorber for Vibration Control of a Vertical Cantilever Beam with Tip Mass." June 2019 24, no. 2 (June 2019): 210–16. http://dx.doi.org/10.20855/ijav.2019.24.21158.

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In this paper, a symmetric gyro with coupling to the tip mass of a beam mounted on a vibrating base is considered. Taking advantage of the angular momentum of the rotating gyroscope, gyrostabilizer systems are expected to become more widely actualized as they provide an effective means of motion control with several significant advantages for various structures. This paper mainly focused on finding optimized stiffness and damping values that minimize the vibration responses with the derivation of the frequency equations of a special combined gyro-beam system. 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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17

Awang Ahmad, Zahari, Tien Sze Lim, Voon Chet Koo, Shuhaizar Daud, Muhamad Asmi Romli, and Rafikha Aliana A. Raof. "A High Efficiency Gyrostabilizer Antenna Platform for Real-Time UAV Synthetic Aperture Radar (SAR) Motion Error Compensation." Applied Mechanics and Materials 892 (June 2019): 16–22. http://dx.doi.org/10.4028/www.scientific.net/amm.892.16.

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A gyro-stabilized antenna platform could implement a real-time motion compensation for a SAR system. Since motion errors reduce during the data acquisition process, post-processing load also reduces. Subsequently, production of well-focused, and high-resolution synthetic aperture radar (SAR) images is conceivable. The research is to design a gyro-stabilized SAR antenna platform that compensates motion in real time during data acquisition. This paper explains the study of undesired motion (error) for typical UAV SAR. The resulting angle ranges of yaw, pitch, and roll describe the magnitude of the motion errors. The design of a gimbal system as a stable antenna platform considers yaw, pitch and roll range parameters. IMU optimization (Complimentary Filter, and Madgwick Filter algorithms are tested and compared in order to decide the optimum optimization scheme for the antenna platform. The data fusion and gradient descent algorithm from Madgwick show significant performance. The implementation of the optimized IMU algorithm and control on a field programmable gate array (FPGA) has resulted in a very effective stable antenna platform.

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18

ALLEN, BRENDON C., and STEVEN K. CHARLES. "EFFECT OF GYROSCOPE PARAMETERS ON GYROSCOPIC TREMOR SUPPRESSION IN A SINGLE DEGREE OF FREEDOM." Journal of Mechanics in Medicine and Biology 19, no. 04 (June 2019): 1950024. http://dx.doi.org/10.1142/s0219519419500246.

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Although tremor is one of the most common movement disorders, there are few effective tremor-suppressing options available to patients. Gyrostabilization is a potential option, but we do not currently know how to optimize gyrostabilization for tremor suppression. To address this gap, we present a systematic investigation of how gyrostabilizer parameters affect tremor suppression in a single degree of freedom (DOF). A simple model with a single DOF at the wrist and a gyroscope mounted on the back of the hand was used to focus on the most basic effects. We simulated the frequency response of the system (hand + gyroscope) to a tremorogenic input torque at the wrist. Varying system parameters one at a time, we determined the effect of individual parameters on the system’s frequency response. To minimize the bandwidth without adding significant inertia, the inertia and spin speed of the flywheel should be as high as design constraints allow, whereas the distance from the wrist joint axis to the gyroscope and the precession stiffness and damping should be kept as low as possible. The results demonstrate the potential of gyroscopic tremor suppression and can serve as foundation for further investigations of gyroscopic tremor suppression in the upper limb.

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19

Townsend, Nicholas C., and R. Ajit Shenoi. "Control Strategies for Marine Gyrostabilizers." IEEE Journal of Oceanic Engineering 39, no. 2 (April 2014): 243–55. http://dx.doi.org/10.1109/joe.2013.2254591.

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20

Perez, Tristan, and Paul D. Steinmann. "Analysis of Ship Roll Gyrostabiliser Control." IFAC Proceedings Volumes 42, no. 18 (2009): 310–15. http://dx.doi.org/10.3182/20090916-3-br-3001.0007.

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21

Shamolin, M. V., and E. P. Krugova. "Diagnostic Problem for a Model of a Gyrostabilized Platform." Journal of Mathematical Sciences 257, no. 1 (July 29, 2021): 138–42. http://dx.doi.org/10.1007/s10958-021-05477-1.

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22

Darestani, Mahdy Rezaei, Amir Ali Nikkhah, and Ali Khaki Sedigh. "H∞/Predictive output control of a three-axis gyrostabilized platform." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 228, no. 5 (June 19, 2013): 679–89. http://dx.doi.org/10.1177/0954410013493237.

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23

Townsend, N. C., A. J. Murphy, and R. A. Shenoi. "A new active gyrostabiliser system for ride control of marine vehicles." Ocean Engineering 34, no. 11-12 (August 2007): 1607–17. http://dx.doi.org/10.1016/j.oceaneng.2006.11.004.

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24

Mel’nik, V. N., and V. V. Karachun. "Influence of acoustic radiation on the sensors of a gyrostabilized platform." International Applied Mechanics 40, no. 10 (October 2004): 1164–70. http://dx.doi.org/10.1007/s10778-005-0026-3.

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25

Dzhagarov, G. A. "Drift of a gyrostabilized platform owing to oscillations of rotors of gyromotors." International Applied Mechanics 28, no. 7 (July 1992): 473–75. http://dx.doi.org/10.1007/bf00847133.

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26

Pogorelov, V. A., E. G. Chub, and K. Yu Yakovlev. "Modeling the motion of an uncompensated gyrostabilized platform in the Rodrigues-Hamilton parameters." Russian Aeronautics (Iz VUZ) 55, no. 3 (July 2012): 315–19. http://dx.doi.org/10.3103/s1068799812030154.

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27

Pogorelov, V. A., T. V. Klodina, and A. I. Sapozhnikov. "Application of the Abel equation to describe the precession motion of a gyrostabilized platform." Russian Aeronautics (Iz VUZ) 53, no. 1 (March 2010): 108–12. http://dx.doi.org/10.3103/s1068799810010186.

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28

Wang, Yexing, Humin Lei, Jikun Ye, Xiangwei Bu, and Yali Xue. "Guaranteeing Prescribed Performance Control for Gyrostabilized Platform with Unknown Control Direction Preceded by Hysteresis." International Journal of Aerospace Engineering 2019 (January 16, 2019): 1–12. http://dx.doi.org/10.1155/2019/2030617.

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This paper investigates the problem of precise and quick tracking for gyrostabilized platform (GSP) with unknown hysteresis, unknown control directions, and unknown compound disturbance. Firstly, the dynamic model of GSP is transformed into a strict feedback formulation by designed FD to facilitate the backstepping control system. Secondly, performance functions are constructed at each step of backstepping design to force tracking errors to fall within the prescribed boundaries. Besides, through ingenious transformation, radial basis function neural network (RBFNN) is applied to estimate the unknown control gains preceded by hysteresis. Hence, the problem of prescribed performance control with unknown compound disturbances, unknown hysteresis, and unknown control directions is creatively solved. Furthermore, the exploited controllers are accurate model independent, which guarantees satisfactory robustness of control laws against unknown uncertainties. Finally, the stability of the closed-loop control system is confirmed via Lyapunov stability theory, and numerical simulations are given for a GSP to validate the effectiveness of the proposed controller.

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29

Pogorelov, V. A. "Joint estimation of coefficients of gyrostabilized platform and the state vector of an object." Journal of Computer and Systems Sciences International 45, no. 4 (July 2006): 640–45. http://dx.doi.org/10.1134/s1064230706040150.

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30

Karachun, V. V., and V. G. Lozovik. "On the impact of acoustic radiation on the dynamics of sensitive elements in gyrostabilized platforms." Kosmìčna nauka ì tehnologìâ 1, no. 2 (March 30, 1995): 72–75. http://dx.doi.org/10.15407/knit1995.02.072.

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31

Tsiruk, Viktor. "Development of method of increasing accuracy of measuring angular velocity and acceleration of gyrostabilized platform." Technology audit and production reserves 4, no. 1(42) (April 24, 2018): 11–16. http://dx.doi.org/10.15587/2312-8372.2018.140519.

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32

Ji, Dong, Hua Pei Wang, Qing Guo, and Qing Lu. "Design of the Vehicular Eletro-Optical Tracking Turntable Servo System and the Research on its Tracking Control Scheme." Advanced Materials Research 712-715 (June 2013): 2119–23. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.2119.

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In order to realize the high precision tracking control of the vehicular eletro-optical tracking turntable with the car bodys vibration, it is necessary to design a high performance turntable servo system and a set of high precision eletro-optical tracking control scheme. In this paper, a digital servo system is designed, which has the control platform based on PC104 processor, has the torque motor as the actuator, has the gyro as the inertial velocity measurement tool and has the high precision encoder as the position measurement tool. Then, the gyrostabilized double speed loop control algorithm with disturbance observer compensating is designed to realize a good inertial velocity stability performace; and, a set of eletro-optical tracking compound position loop control scheme based on the target-missing quality data processing, the segmented PID control and the acceleration lag compensating control is proposed to enhance the eletro-optical tracking precision. The result shows that the tracking turntable based on the control technology designed in this paper is reliable, responses quickly, has a good speed stability performance and a high eletro-optical tracking precision performance.

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33

Boyarchuk, Anatolii, Pavlo Myronenko, and Serhii Murakhovsky. "THE MOTION CONTROL SYSTEM OF THE SENSITIVE ELEMENT OF A GYROTHЕODOLITE IN A NON-GYROSTABILIZED PLANE." Bulletin of Kyiv Polytechnic Institute. Series Instrument Making, no. 57(1) (June 30, 2019): 19–25. http://dx.doi.org/10.20535/1970.57(1).2019.172014.

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34

Martynenko, Yu G., A. V. Lenskii, and A. I. Kobrin. "Decomposition of the problem of controlling a mobile one-wheel robot with an unperturbed gyrostabilized platform." Doklady Physics 47, no. 10 (October 2002): 772–74. http://dx.doi.org/10.1134/1.1519328.

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35

Uskov, V. A. "TENTATIVE SOLUTION OF A PROBLEM OF AXIAL ROTATION OF GYROSTABILIZED DEVICES OPERATING IN ABNORMAL OPERATION CONDITIONS." Vektor of development 1, no. 10 (2021): 98–100. http://dx.doi.org/10.53852/2782-3962-2021-1-10-98-100.

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36

Veprik, A., S. Djerassy, and V. Babitsky. "Synthesis of snubber's spectral characteristics for vibration protection of sensitive components in airborne gyrostabilized electro-optic payloads." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 222, no. 10 (October 1, 2008): 1885–97. http://dx.doi.org/10.1243/09544062jmes980.

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Low-frequency vibration isolation of airborne gyrostabilized electro-optic payloads is the ultimate and proven solution aimed at improving their imagery performance, primarily during a quiet cruise flight. This portion of the airborne mission is characterized by rather moderate environmental conditions, under which vibration mounts operate in a linear working range within the predefined working rattle space, which eventually results in better performances. Compliant snubbers are indispensable emergency components in such vibration protection arrangements primarily needed during exposure to the extreme environmental conditions typical of the relatively short periods of airborne missions such as take-off, landing, weapon application, etc. Their primary objective is to protect these soft vibration mounts and prevent their bottoming and disintegration without any impulsive accelerations that compromise the integrity of the payload frame and fragile internal components mounted upon it. The optimal approach for designing a snubbed vibration isolator, delivering a fail-safe environment for both the payload frame and critical components subjected to tight constraints imposed on the size, weight, and price does not seem to exist. It is intended to devise the optimal design approach and to demonstrate its application on low-frequency vibration mounted electro-optic payload comprising the vibration sensitive integrated dewar-detector-cooler assembly.

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37

Klimenko, I. V., and A. A. Suvernev. "Scientific and methodological foundations for determining the angular motion of a rocket using a four-lined gyrostabilized platform." Measurement Techniques 50, no. 12 (December 2007): 1266–73. http://dx.doi.org/10.1007/s11018-007-0237-6.

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38

Degtyarev, M. S. "Method of controllung the angular position of IO ASD relative to the system of coordinates of a gyrostabilized platform." VESTNIK of the Samara State Aerospace University, no. 1(43) (July 30, 2014): 189. http://dx.doi.org/10.18287/1998-6629-2014-0-1(43)-189-193.

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39

Karachun, V. V., and V. N. Mel’nick. "Absorbed acoustic radiation as a factor of the transformation of inertial sensing elements of gyrostabilized platforms into impedance ones. Mixed boundary problem." Kosmìčna nauka ì tehnologìâ 17, no. 2 (March 30, 2011): 22–31. http://dx.doi.org/10.15407/knit2011.02.022.

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40

Axente, Corneliu, Liviu Coşereanu, and Daniel Ioan Suteu. "The Command and Control Software Implementation of a CCD Video 2 Axis Gyrostabilized Payload Used by a Fixed Wing UAV Configuration Platform." Applied Mechanics and Materials 186 (June 2012): 46–49. http://dx.doi.org/10.4028/www.scientific.net/amm.186.46.

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The software algorithm is designed to ensure compatibility between the commands given by the operator and the need to stabilize the CCD/IR payload. The implementation was made on a mini-turret with 2 degrees of freedom mounted on a miniUAV. Appropriate command and control functions were developed by programming an Atmel family microcontroller.

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41

Bell, Robin E., and A. B. Watts. "Evaluation of the BGM-3 sea gravity meter system onboard R/V Conrad." GEOPHYSICS 51, no. 7 (July 1986): 1480–93. http://dx.doi.org/10.1190/1.1442196.

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The first Bell Aerospace BGM-3 Marine Gravity Meter System available for academic use was installed on R/V Robert D. Conrad in February, 1984. The BGM-3 system consists of a forced feedback accelerometer mounted on a gyrostabilized platform. Its sensor (requiring no cross‐coupling correction) is a significant improvement over existing beam and spring‐type sea gravimeters such as the GSS-2. A gravity survey over the Wallops Island test range together with the results of subsequent cruises allow evaluation of the precision, accuracy, and capabilities of the new system. Over the test range, the BGM-3 data were compared directly to data obtained by a GSS-2 meter onboard R/V Conrad. The rms discrepancy between free‐air gravity anomaly values at intersecting ship tracks of R/V Conrad was ±0.38 mGal for BGM-3 compared to ±1.60 mGal for the GSS-2. Moreover, BGM-3’s platform recovered from abrupt changes in ship’s heading more rapidly than did the platform of GSS-2. The principal factor limiting the accuracy of sea gravity data is navigation. Over the test range, where navigation was by Loran C and transit satellite, a two‐step filtering of the ship’s velocity and position was required to obtain an optimal Eötvös correction. A spectral analysis of 1 minute values of the Eötvös correction and the reduced free‐air gravity anomaly determined the filter characteristics. To minimize the coherence between the Eötvös and free‐air anomaly, it was necessary to prefilter the ship’s position and velocity. Using this procedure, reduced free‐air gravity anomalies with wavelengths as small as a few kilometers can be resolved.

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42

Жежера, Іван Володимирович. "ЗАБЕЗПЕЧЕННЯ ФУНКЦІОНАЛЬНО СТІЙКОГО РУХУ МАЛОГО АВТОНОМНОГО ЛІТАЛЬНОГО АПАРАТУ." Aerospace technic and technology, no. 5 (November 8, 2018): 4–8. http://dx.doi.org/10.32620/aktt.2018.5.01.

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The subjects of the study are the models and methods for providing functionally steady motion control of the small unmanned aerial vehicle (SUAV). The purpose of this work is the development of the method for providing functionally steady motion control of SUAV with a classical, minimally necessary composition of measuring sensors without hardware redundancy. The main task is to improve the existing diagnosing method of inertial navigation system (INS) model of SUAV, based on the combination of signals and the introduction of visual information from the onboard gyrostabilized camera, to implement the method of parrying emergency situation (ES) by applying for situational, synthetically created redundancy. The applied methods are the application of artificial system-hardware redundancy, signal-parametric approach, and the introduction of computer vision methods in the problem of angular and spatial positions calculating. As a result of the research, algorithmic dependencies of the orientation system signals were determined, which allowed to perform analysis and diagnostics with the subsequent restoration of the lost parameter due to hardware-system sensors redundancy. Conclusions. Developments in the field of providing functionally steady motion control systems for SUAV are in demand due to the need to increase the level of safety of SUAV flight upon incurrence of ES. At the same time, an obvious advantage is a work with minimal hardware redundancy of the sensors without the intervention of additional equipment. It is proved the possibility of the introduction of the optical systems (OS) as an additional source of geospatial information based on the use of visual information and computer vision methods with subsequent provision of artificial redundancy and implementation of majority calculation for providing functionally steady motion control of SUAV. It is demonstrated the practical application of the method in real conditions with the influence of artificially created ES. A functionally stable system will increase the effectiveness of existing SUAV, reduce the risk of loss of the apparatus during the flight

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43

Boyarchuk, Anatolii, Pavlo Mironenko, Sergiy Murakhovsky, and Ruslan Ivanenko. "ASTATIC IDENTIFIER IN THE CONTROL SYSTEM OF THE GYROTHEODOLITE’S SENSITIVE ELEMENT." Bulletin of Kyiv Polytechnic Institute. Series Instrument Making, no. 61(1) (June 30, 2021): 13–19. http://dx.doi.org/10.20535/1970.61(1).2021.237067.

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The basic features of working conditions of means of ground orientation are considered. It is shown that in the presence of external vibration the appearance of additional measurement error is possible. The main characteristics of external vibration are given. A new feedback controller structure has been proposed, which includes an astatic state identifier. The mathematical model of the device in the form of space of states taking into account external vibration is considered. It is proposed to control the position of the sensitive element by the method of modal control by an incomplete state vector. It is assumed that the measured parameter for identifying the state vector is the angle of deviation of the sensitive element of the gyrotheodolite in azimuth. The analysis of observability at the set structure of matrices of a condition and measurements is carried out. To reduce the estimation error that occurs due to the presence of uncontrolled vibration, the state identifier uses both proportional and integrated feedback channels. The coefficients of an observer with an astatic component in the equation of state are determined under the assumption that the evaluation process should be aperiodic. Simulation of the work of the astatic identifier on the basis of the developed software model is carried out. The coefficients of the software model are selected on the basis of constructive solutions used at the present stage of development of systems for determining azimuthal directions based on gyrotheodolites. The coefficients of the observer for the given parameters of the device are calculated. The simulation results showed that the application of the proposed method can significantly reduce the impact of the constant component of external vibration. The error of estimating the angular coordinates and velocities used in the control system of the position of the sensing element, the astatic status identifier goes to zero, while the static system has a constant component of the error. In further research it is planned to build a generalized system, which includes control of the motion of the sensing element both in the azimuth and in the non-gyrostabilized plane.

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Townsend, Nicholas C., and Ramanand A. Shenoi. "Gyrostabilizer Vehicular Technology." Applied Mechanics Reviews 64, no. 1 (January 1, 2011). http://dx.doi.org/10.1115/1.4004837.

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This paper examines the current state of gyrostabilizer vehicular technology. With no previous description of the wide range and variety of gyrostabilizer technology, this paper provides a review of the current state of the art. This includes a detailed examination of gyrostabilizer vehicular systems, dynamics and control. The present review first describes the historical development of gyroscopic systems before going on to describe the various system characteristics, including an overview of gyrostabilizer vehicular applications and system designs for land, sea and spacecraft. The equations of motion for generic gyroscopic systems are derived following momentum (Newton-Euler) and energy (Lagrange) based approaches and examples provided. The derivations are made generically for individual components, enabling direct application for a wide variety of systems. In the final section, a review of gyrostabilizer control strategies is presented and the remaining challenges are discussed. Gyrostabilizer systems are anticipated to become more widely adopted as they provide an effective means of motion control with several significant advantages for land, sea and spacecraft. (101 references).

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Подчезерцев, В. П., and Ц. Цинь. "Modeling the Calibration of DTG on a uniaxial gyrostabilizer." Engineering Journal: Science and Innovation, no. 71 (September 2017). http://dx.doi.org/10.18698/2308-6033-2017-10-1682.

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Nesterenko, Oleg, Lev Ryzhkov, and Vladyslav Osokin. "Mathematical models of the gyrostabilizer in different modes of its operation." MECHANICS OF GYROSCOPIC SYSTEMS, no. 40 (December 26, 2021). http://dx.doi.org/10.20535/0203-3771402020248656.

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The article considers the development of a mathematical model of the stabilization and rotation system in the modes of stabilization, targeting, auto-tracking of the target and electrical arrest. The output signals shall be signals proportional to the components of the angular velocities of the line of sight, the angles of pitch and dash of deviation around the axes of the gyrosystem and the angles of inconsistency of the line of sight relative to the optical axis of the homing head. The system of cardan suspension of the stabilization and rotation system is considered, where the actuators are located on the axes of rotation of the outer and inner frames of the cardan suspension. The homing head is mounted on the inner frame. The inner frame is a gyrostabilized platform. Depending on the mode of operation of the stabilization and rotation system: in the stabilization mode, the coordinate system that is stabilized is assumed to be stationary in inertial space; in the auto-tracking mode of the target, the coordinate system that is stabilized by Oxyz is returned according to the change of direction to the target; in the mode of electrical locking, the axes of the coordinate system which is stabilized by Oxyz coincide with the axes of Oxoyozo connected to the body of the main product. To obtain differential equations, the projections of the total vector of the kinetic moment of the inner and outer frames on the axis of the outer frame are taken and written according to the theorem on the change of the kinetic moment of the considered system relative to the axes of suspensions. The total moments of external forces applied to the outer and inner frames around their axes of rotation, which have the following components: moments of actuators, moments of viscous and dry friction, imbalance and other unaccounted for factors around the axes of the outer and inner frames . The moments of the forces of viscous and dry friction are presented in the classical form, taking into account the signs when changing the direction of movement. The mass of the inner frame with all devices mounted on it, and the mass of the entire movable system (outer and inner frames), as well as the radius vector characterizing the displacement of the center of mass, give a static imbalance of the movable system relative to the suspension axis of the i-th frame are components imbalance. The scientific novelty of the work is to obtain a mathematical model for a particular product, as well as the practical feasibility of their application. The result is a differential equation that fully describes this system of stabilization and rotation, takes into account the parameters of actuators, turbulent moments, as well as random effects and can be used depending on the tasks.

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Raspopov, V. Ya. "INDICATOR GYROSTABILIZERS." Spravochnik. Inzhenernyi zhurnal, 2016, 1–20. http://dx.doi.org/10.14489/hb.supp.2016.11.pp.001-020.

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Raspopov, V. Ya. "INDICATOR GYROSTABILIZERS (Continuation)." Spravochnik. Inzhenernyi zhurnal, 2016, 1–20. http://dx.doi.org/10.14489/hb.supp.2016.12.pp.001-020.

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Raspopov, V. Ya. "DIRECT GYROSTABILIZERS. THE DEVELOPMENT OF IDEAS AND USAGE." Spravochnik. Inzhenernyi zhurnal, 2015, 1–32. http://dx.doi.org/10.14489/hb.supp.2015.01.pp.001-032.

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Raspopov, V. Ya. "POWERED GYROSTABILIZERS. BASIS OF THEORY, DESIGN AND APPLICATIONS." Spravochnik. Inzhenernyi zhurnal, 2015, 1–28. http://dx.doi.org/10.14489/hb.supp.2015.03.pp.001-028.

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