Готові списки джерел за темами / Flexible gimbal

Добірка наукової літератури з теми "Flexible gimbal"

Автор: Grafiati
Опубліковано: 30 травня 2022
Оновлено: 31 травня 2022

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Статті в журналах з теми "Flexible gimbal"

1

Qi, Yuan, Hui Lin Wang, Qing Qing Xu, Yan Lu Du, Xin Zheng Shao, and Hong Yang. "A new flexible gimbal for electro-optical sighting system (EOSS)." Optik 242 (September 2021): 167016. http://dx.doi.org/10.1016/j.ijleo.2021.167016.

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2

Muraoka, Y., H. Ryoson, T. Kawashima, M. Kondo, Y. Kaneta, and Y. Okazaki. "Vibration analysis of a contact slider/gimbal of a flexible disk drive." Microsystem Technologies 9, no. 1-2 (November 1, 2002): 41–47. http://dx.doi.org/10.1007/s00542-001-0152-8.

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3

Jia, Shiyuan, and Jinjun Shan. "Flexible Structure Vibration Control Using Double-Gimbal Variable-Speed Control Moment Gyros." Journal of Guidance, Control, and Dynamics 44, no. 5 (May 2021): 954–66. http://dx.doi.org/10.2514/1.g005684.

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4

Qi, Y., M. Ji, H. L. Wang, Q. Q. Xu, and G. Wang. "A two-stage stabilizing device of multi-degree gimbal based on flexible structure." Journal of Physics: Conference Series 1507 (March 2020): 092007. http://dx.doi.org/10.1088/1742-6596/1507/9/092007.

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5

Ryoson, H., M. Kondo, K. Goto, T. Kawashima, S. Nagata, Y. Muraoka, Y. Matsui, Y. Kaneta, and Y. Okazaki. "A novel contact slider/gimbal to raise recording density in flexible disk drives." Microsystem Technologies 8, no. 2-3 (May 1, 2002): 188–93. http://dx.doi.org/10.1007/s00542-001-0145-7.

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6

Wei, Changzhu, Ruiming Wang, Wei Zheng, and Jialun Pu. "Equivalent dynamic modeling of flexible morphing aircraft." Science Progress 104, no. 2 (April 2021): 003685042110109. http://dx.doi.org/10.1177/00368504211010946.

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Анотація:
A morphing aircraft can maintain optimal flight performance by adaptively changing shape. However, large deformation and fast motion of aircraft modules lead to complicated dynamics during morphing process. This paper proposes a mechanistic equivalent model with parameters identified by optimization method. Based on the dynamics of the aircraft modules with large deformation and fast motion and considering the coupling characteristics of rigid bodies and gimbal joints, an equivalent dynamic model of morphing aircraft is built in this study. Considering the huge amount of highly coupled parameters in the equivalent model, particle swarm optimization algorithm is used to identify the equivalent parameters based on the sample data of flexible model. By comparing the simulation results of proposed model to those of rigid model and flexible model, it can be seen that the accuracy of the proposed equivalent model is comparable to that of the flexible model, but the computational load is only 10% of that of flexible model. Further, based on this high-fidelity model with low computational load, an optimized morphing process is obtained, and the attitude variation during morphing is reduced by 4.23%.
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7

Sun, Jianjun, Yalin Ding, Hongwen Zhang, Guoqin Yuan, and Yuquan Zheng. "Conceptual Design and Image Motion Compensation Rate Analysis of Two-Axis Fast Steering Mirror for Dynamic Scan and Stare Imaging System." Sensors 21, no. 19 (September 27, 2021): 6441. http://dx.doi.org/10.3390/s21196441.

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Анотація:
In order to enable the aerial photoelectric equipment to realize wide-area reconnaissance and target surveillance at the same time, a dual-band dynamic scan and stare imaging system is proposed in this paper. The imaging system performs scanning and pointing through a two-axis gimbal, compensating the image motion caused by the aircraft and gimbal angular velocity and the aircraft liner velocity using two two-axis fast steering mirrors (FSMs). The composition and working principle of the dynamic scan and stare imaging system, the detailed scheme of the two-axis FSM and the image motion compensation (IMC) algorithm are introduced. Both the structure and the mirror of the FSM adopt aluminum alloys, and the flexible support structure is designed based on four cross-axis flexural hinges. The Root-Mean-Square (RMS) error of the mirror reaches 15.8 nm and the total weight of the FSM assembly is 510 g. The IMC rate equations of the two-axis FSM are established based on the coordinate transformation method. The effectiveness of the FSM and IMC algorithm is verified by the dynamic imaging test in the laboratory and flight test.
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8

Li, Xiongfei, and Wei Cheng. "Research on Microvibrations Generated by a Control Moment Gyroscope on a Flexible Interface Based on a Dynamic Substructure Method." International Journal of Aerospace Engineering 2018 (2018): 1–17. http://dx.doi.org/10.1155/2018/5045740.

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Анотація:
Microvibrations generated by a control moment gyroscope (CMG) will couple with a flexible spacecraft structure, and this seriously degrades certain point performances of a spacecraft. This study focuses on investigating the coupled microvibrations caused by a CMG on a flexible interface by using a dynamic substructure method (DSM). First, a DSM based on a frequency response function (FRF) is established, and this method is used to simultaneously synthesize multiple substructures with different coordinates irrespective of whether their connection interfaces are rigid or flexible. Second, the bearings and the gimbal servo system are simplified into linear springs, and therefore the CMG model is equivalent to a mass-spring-damping system with eighteen degrees of freedom (DOFs). Third, the established DSM is employed to deduce the FRF matrix of the CMG-flexible interface coupling system that consists of CMG mounted on an aluminum honeycomb sandwich palate (AHSP). Dynamic responses of the coupling system are calculated by the derived FRF matrix. Finally, MATLAB and multibody dynamics simulations are conducted to analyze and validate the dynamic responses of the coupling system obtained by the DSM. The results indicate that the DSM is appropriate to predict the coupled microvibrations of CMG on a flexible interface and exhibits high prediction accuracy and computational efficiency.
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9

Ruiz, O. J., and D. B. Bogy. "A Numerical Simulation of the Head-Disk Assembly in Magnetic Hard Disk Files: Part I—Component Models." Journal of Tribology 112, no. 4 (October 1, 1990): 593–602. http://dx.doi.org/10.1115/1.2920303.

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Анотація:
In previous papers the dynamics of air bearing sliders used to carry the read/write transducers in magnetic hard disk files has been studied. These studies are useful in evaluating the steady flying and stability of sliders subjected to various disturbances. They are particularly useful in finding the natural frequencies of the air bearings. However, in hard disk drives the sliders are attached to suspensions, which are highly specialized structures that connect the sliders to the positioning actuators. These suspensions have to be relatively stiff in lateral translation, but very flexible in pitch and roll. This latter feature is accomplished by the gimbal or flexure that connects the slider to the end of the suspension. The suspension-gimbal structure has its own natural frequencies, which can be excited by disturbances such as track seeking and impacting the actuator against the crash stop. In order to study the effect of these structures on the head-disk spacing it is necessary to include them in the numerical simulator. In this two part study such a simulator is developed. In Part I the component parts and their interfaces are modeled. In Part II the numerical simulation of the coupled system is accomplished and the numerical results of several sample simulations are presented and discussed.
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10

White, James. "Slider Air Bearing Design Enhancements for High Speed Flexible Disk Recording." Journal of Tribology 127, no. 3 (June 13, 2005): 522–29. http://dx.doi.org/10.1115/1.1843151.

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Анотація:
The current effort was motivated largely by the fact that computing and communication platforms are becoming more portable and mobile with increased demands for both speed and disk storage. This work makes use of an asymmetric opposed slider arrangement to provide both static and dynamic improvements to the recording head air bearing interface for high speed flexible disk applications. The combination of a longitudinally slotted rail opposed by an uninterrupted rail that functions as a noncontact hydrodynamic pressure pad causes the disk to deflect at the submicron level over critical areas of the slider interface. This allows the required static minimum flying height to be focused over the recording transducer while higher clearances are positioned elsewhere, resulting in minimized exposure to contact between slider and disk. The high stiffness and low flying height of the air film at the recording element together with the low stiffness and high flying height of the opposing air film provides a noncontact air bearing interface that is especially immune to mechanical shock. A computer code called FLEXTRAN was developed that provides both static and dynamic numerical solutions of the air bearing interface composed of two opposed gimbal mounted sliders loaded against a high speed flexible disk. Simulations of the asymmetric opposed slider configuration are presented and compared with those of other slider air bearing designs.
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Дисертації з теми "Flexible gimbal"

1

Балабанова, Татьяна Васильевна. "Динамика и погрешности двухрамочного динамически настраиваемого гироскопа с одноколечной схемой сборки при ускорениях основания". Doctoral thesis, 2011. https://ela.kpi.ua/handle/123456789/753.

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Книги з теми "Flexible gimbal"

1

Stanley, Fay, and United States. National Aeronautics and Space Administration, eds. Control of Flexible Structures-II (COFS-II) flight control, structure, and gimbal system interaction study. Cambridge, Mass: The Charles Stark Draper Laboratory, Inc., 1988.

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Тези доповідей конференцій з теми "Flexible gimbal"

1

Shaffer, Richard, Mark Karpenko, and Qi Gong. "Robust Control of a Flexible Double Gimbal Mechanism." In 2018 Annual American Control Conference (ACC). IEEE, 2018. http://dx.doi.org/10.23919/acc.2018.8430958.

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2

Kamiya, Toshio, Ken Maeda, Naoto Ogura, and Shin-ichiro Sakai. "Flexible Spacecraft Rest-to-Rest Maneuvers With CMGs Parallel Gimbal Arrangement." In AIAA Guidance, Navigation, and Control Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-6206.

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3

Hoang, Triem, and Tamara O'Connell. "Performance Demonstration of Flexible Advanced Loop Heat Pipe for Across-Gimbal Cryocooling." In 3rd International Energy Conversion Engineering Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2005. http://dx.doi.org/10.2514/6.2005-5590.

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4

Tao, Zhenyu, Jun Yang, Shihua Li, and Congyan Chen. "On Disturbance Rejection for Gimbal Servo System of Flexible Mounting Control Moment Gyroscope." In 2021 40th Chinese Control Conference (CCC). IEEE, 2021. http://dx.doi.org/10.23919/ccc52363.2021.9550476.

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5

Hoang, Triem T., Tamara A. O'Connell, and Dmitry K. Khrustalev. "Development of a flexible advanced loop heat pipe for across-gimball cryocooling." In Optical Science and Technology, SPIE's 48th Annual Meeting, edited by James B. Heaney and Lawrence G. Burriesci. SPIE, 2003. http://dx.doi.org/10.1117/12.501493.

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