Inertial Sensor Applied to the Club Head Vibration Analysis in Golf Ball Hitting
| Autor: | Jung-Chou Chen, 陳容舟 |
|---|---|
| Rok vydání: | 2014 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 102 Inertial Sensor Applied to the Club Head Vibration Analysis in Golf Ball Hitting ABSTRACT Goal: The purpose of this study is to apply the inertial sensor in analyzing the speed, vibration, and acceleration of a 7 iron golf club, when hitting. Method: The subjects of the study are three right-handed golf players. Players 1 and 2 (levels A and B) are currently playing in the Asian Tour Open and Taiwan Professional Golf Association. Player 3 (level C) is a study subject in the Taiwan Amateur Golf Championship. (aged 48 ± 5.29 years, height 174 ± 10.53 cm, weight 80.67 ± 4.62 kg, ball age 24.33 ± 6.03 years). This study applied wireless inertial sensors (including triaxial accelerometers, the sampling frequency is 3333Hz) on experimental ball heads and a high-speed camera to record head vibration for repeated player strokes. Frequency domain analysis, time domain analysis, vibration time, and ball points were used to analyze the statistical differences. Result： 1.The study found no significant difference for the three players in the vibration and acceleration of ball heads in axis X. However, there were significant differences in low, middle, and high frequencies in axis Y and Z. 2.In the frequency domain analysis of ball head acceleration, there was no significant difference in axis X; there were significant differences in the maximum and average in axis Y, but no significandifference in the total rated power. There were significant differences in the maximum,average, and the total rated power in axis Z among the three players. 3.In the time domain analysis of ball head acceleration zone, there was no significant difference among the three players in axis X, but with significant difference in minimum and the total rated power. There were significant differences among the three players in maximum, average, and the total rated power in axis Y and Z. 4.In the analysis of ball heads vibration, there were significant differences among the three level players in axis X, Y, and Z, and in the vibration time in axis X, A level is larger thanB and C. In the vibration time in axis Y, C level is smaller than A and B. In the vibration time in axis Z, B level is smaller than A and C. Conclusion： 1.In axis X and Z, Level A and C players had more obvious vibration rate than level B player. In axis Y, the three players had no significant difference in vibration rate. 2.There was no significant difference among the three players in ball head acceleration maximum, average, and the total rated power in axis X and Y. However, in axis Z (theforwards), the difference was the largest, and level A player had larger values than level B and C players in maximum, average, and the total rated power. 3.The study found that from axis X and axis Z, in the ball head acceleration zone, level A players accelerated the pressing down faster than level B and C players did. 4.Level A player relaxed more than level B and C players after hitting the ball, and level A player could hit the ball with the iron weight. Suggestion： The analysis of the experimental data about the axis X and axis Z acceleration and vibration when hitting balls may offer relevant information and modals to professional. Key words：accelerometer, spectrum analysis, vibration response, total power |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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