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http://dx.doi.org/10.3795/KSME-A.2011.35.4.409

Vibration Characteristic Analysis of Gimbal Structure System with Observation Reconnaissance Camera Module  

Lee, Sang-Eun (EO/IR R&D Lab., LIG NEX1 Co., Ltd.)
Lee, Tae-Won (School of Mechanical Engineering, Kumoh National Institute of Technology)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.35, no.4, 2011 , pp. 409-415 More about this Journal
Abstract
A gimbal system in observation reconnaissance aircraft was fabricated by assembling many parts and bearings. This system consists of a camera module and a stabilization gimbal that supports the camera module. During the flight for recording images, the gimbal system experiences various accelerations with wide frequencies. Although base excitation of stabilization gimbal results in vibration of the camera module, the camera module must be able to capture the correct and clear image even while vibrating. Hence, it is important to know the natural frequencies and vibration modes of the gimbal system with the camera module. Considering bearings as spring elements, the vibration characteristic of the gimbal system was analyzed by finite element method. In addition, harmonic response analysis was performed to determine the correct transmissibility of acceleration for the camera module in the frequency range of 0-500 Hz.
Keywords
Gimbal; Modal Analysis; Harmonic Responses Analysis; Transmissibility; Finite Element Analysis;
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Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 0
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