Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Vibration Characteristic Analysis Of Gimbal Structure in Collection Equipment of Image Information

영상정보 수집 장치용 짐발 구조물의 진동특성해석

  • 이상은 (LIG 넥스원 연구개발본부 전자광학연구센터) ;
  • 이태원 (금오공과대학교 기계공학부)
  • Received : 2010.01.21
  • Accepted : 2010.03.11
  • Published : 2010.04.30
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Abstract

A camera module is supported by a gimbal structure in collection equipment of image information. During flight, the gimbal system undergoes serious accelerations with wide frequencies. To get the correct images, the camera module must be stably vibrated under these conditions. If natural frequency unfortunately exists in a exciting frequency range, resonance occurs there. Hence, harmonic responses analysis is needed to know correct vibration characteristic of the gimbal system. Finite element analysis was performed to get an acceleration of the gimbal system by mode superposition after extracting mode shapes and natural frequencies. Considering damping ratio of 2%, the reponses of gimbal structure were calculated from excitations with a design frequency band. As results, a maximum acceleration transmissibility, which is the ratio of response to excitation, was obtained and it can be used to design the gimbal structure effectively.

Keywords

References

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