Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지
DOI QR코드

DOI QR Code

Study on Analysis of Vibration Characteristics and Modal Test for a Quad-Rotor Drone

쿼드로터형 드론의 진동특성 분석 및 실험에 관한 연구

  • Kim, Minsong (Department of Aerospace Engineering, Pusan National University) ;
  • Kim, Jaenam (Department of Aerospace Engineering, Pusan National University) ;
  • Byun, Youngseop (Industrial Liaison Innovation Center, Pusan National University) ;
  • Kim, Jeong (Department of Aerospace Engineering, Pusan National University) ;
  • Kang, Beomsoo (Department of Aerospace Engineering, Pusan National University)
  • 김민송 (부산대학교 항공우주공학과) ;
  • 김재남 (부산대학교 항공우주공학과) ;
  • 변영섭 (부산대학교 부품소재산학협력연구소) ;
  • 김정 (부산대학교 항공우주공학과) ;
  • 강범수 (부산대학교 항공우주공학과)
  • Received : 2016.05.10
  • Accepted : 2016.07.13
  • Published : 2016.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper describes analysis results of vibration characteristics and modal test for a small-scale quad-rotor drone. The rotor arm has a slender body with a propeller and motor at its tip. Rotor system generates excitation for an unbalanced mass. Therefore, the drone platform is involved in the possibility of resonance. For advance identification of the possibility of resonance, confirmation of eigen-mode being closest to the propeller operation range is necessary. Material properties of CFRP tubes used for the rotor arm were acquired by finding the natural frequency based on Rayleigh method. A simplified quad-rotor FE model consisting of rotor arm assembly with tip mass was built to perform numerical analysis, and a free-free boundary condition was applied to provide flight status. Modal tests for the actual platform with impact hammer instrument were performed to verify analysis results. Separation margin from hazardous eigen-mode was checked on the propeller operation range.

Keywords

References

  1. Jeong, J., Byun, Y., Song, W., and Kang, B., "Study on Performance Prediction of Electric Propulsion System for Multirotor UAVs," J. Korean Soc. Preics. Eng., Vol. 33, No. 6. pp. 499-508, 2016. https://doi.org/10.7736/KSPE.2016.33.6.499
  2. Lee, S. C., Son, I. S., and Hur, K. D., "Vibration Analyses and Design of Resonance Avoidance of the Unmanned Helicopter Master," J. Korean Soc. Precis. Eng., Vol. 28, No. 8. pp. 951-958, 2011.
  3. Kim, M. S., Kim, J. N., Tullu, A. S., Song, W. J., and Kang, B. S., "Vibration Characteristics Analysis of Quad-Rotor Type Drone Rotor-Arm," Proc. of the Korean Society for Aeronautical and Space Sciences Autumn Conference, 2015.
  4. Rathinam, S., Kim, Z. W., and Sengupta, R., "Vision-Based Monitoring of Locally Linear Structures Using an Unmanned Aerial Vehicle 1," Journal of Infrastructure Systems, Vol. 14, No. 1, pp. 52-63, 2008. https://doi.org/10.1061/(ASCE)1076-0342(2008)14:1(52)
  5. Son, I. S. and Yoon, H. I., "Effects of Slenderness Ratio and on Dynamic Behavior of Cracked Beam Subjected to Subtangential Follower Force," J. Korean Soc. Precis. Eng., Vol. 26, No. 9. pp. 112-120, 2009.
  6. Mizui, M., Yamamoto, I., and Ohsawa, R., "Resonance Analysis of the UAV Rotor-Arm Part," IOSR Journal of Engineering, Vol. 2, No. 8, pp. 28-32, 2012
  7. Singiresu, S. R., "Mechanical Vibrations," Pearson, 5th Ed., pp. 153-158, 2014.
  8. Moon, K. H., Lee, D.-H., Kim, J. C., and Ji, H. Y., "Analysis on the Vibration Characteristics of Reduction Gear Units Fir High-Speed Trains," J. Korean Soc. Precis. Eng., Vol. 30, No. 7. pp. 694-701, 2013 https://doi.org/10.7736/KSPE.2013.30.7.694
  9. Hur, H.-M., Park, J.-H., and You, W.-H., "Analysis on the Vibration Characteristics of High Speed Train according to Track," J. Korean Soc. Precis. Eng., Vol. 29, No. 6, pp. 593-599, 2012 https://doi.org/10.7736/KSPE.2012.29.6.593
  10. Jeon, B.-H., Kang, H.-W., Lee, J.-J., and Lee, Y.-S., "Ground Vibration Tests of Smart UAV Airframe Structure," Journal of the Korean Society for Aeronautical and Space Sciences, Vol. 38, No. 5, pp. 482-489, 2010. https://doi.org/10.5139/JKSAS.2010.38.5.482
  11. Military Specification, "Airplane Strength and Rigidity Vibration, Flutter, and Divergence," MIL-A-8870C, 1993.
  12. Simsiriwong, J. and Sullivan, R. W., "Experimental Vibration Analysis of a Composite UAV Wing," Mechanics of Advanced Materials and Structures, Vol. 19, Nos.1-3, pp. 196-206, 2012 https://doi.org/10.1080/15376494.2011.572248
  13. Simsiriwong, J. and Sullivan, R. W., "Vibration Testing of a Carbon Composite Fuselage," International Journal of Vehicle Noise and Vibration, Vol. 6, Nos. 2-4, pp. 149-162, 2010. https://doi.org/10.1504/IJVNV.2010.036683
  14. Avitabile, P., "Experimental Modal Analysis- A Simple Non-Mathematical Presentation," Sound and Vibration, Vol. 35, No. 1, pp. 1-11, 2001.
  15. Tom, I., "The Steady-State Response of a Single-Degree-of-Freedom System Subjected to a Harmonic Base Force," http://www.vibrationdata.com/tutorials2/base_sine.pdf (Accessed 24 August 2016)
  16. Thomson, W., "Theory of Vibration with Applications," Prentice-Hall, 4th Ed., pp. 163-189, 1993.
  17. Yang, B. S., "Condition Monitoring and Diagnostics," Intervision, 1st Ed, pp. 29-33, 2006.