Korean Journal of Applied Biomechanics (한국운동역학회지)

Korean Society of Applied Biomechanics (한국운동역학회)
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Development of a Program That Computes the Position of the Club Face Based on the Experimental Data

실험 데이터를 이용한 클럽 페이스 움직임 분석 프로그램 개발

  • Park, Jin (Human movement science, College of Natural Science, Seoul Women's University) ;
  • Shin, Ki-Hoon (Department of Mechanical Engineering, College of Engineering, Seoul National University of Technology)
  • 박진 (서울여자대학교 자연과학대학 체육학과) ;
  • 신기훈 (서울산업대학교 공과대학 기계공학과)
  • Received : 2010.04.29
  • Accepted : 2010.06.27
  • Published : 2010.06.30
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Abstract

The moving trajectory of a golf ball is mainly determined by the angles of the clubface and the trajectory of the club shaft. This paper presents a computer program for analyzing the position and angles of the club while the club moves in a circular motion. For this purpose, a mathematical algorithm was developed and implemented on the experimental data(5 m and 10 m carries) using VC++ and OpenGL. A skilled female golfer(174 cm, 65 kg, 0 handicap) was participated in data collection for the short approach shots. An iron club(Titleist 52 degree, 91.5 cm length, 450 g mass), attached with five reflective markers(12 mm), was used to collect experimental data. However, exact 3D coordinates and angles of the clubface are not directly calculated from measured data. A reverse engineering platform(Minolta Vivid910 hardware and Rapidform software) was thus employed to acquire the scanned data of the clubface. The scanned data and measured data were first aligned by applying appropriate coordinate transformations, and then exact coordinates and angles of clubface could be obtained at each position during circular motion. The program(Club Motion Analysis 1.0) exports the open, heel, loft angles of the club.

Keywords

References

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