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- 저자 : 송문재(Moonjae Song) (검색결과 1 건)
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김종근(Jonggeun Kim),정영상(Yeongsang Jeong),송문재(Moonjae Song),김성신(Sungshin Kim) 한국생산제조학회 2014 한국생산제조학회지 Vol.23 No.1
An arrow produced by a manufacturing process is evaluated using the archers paradox and the intensity of the impact point. The accuracy rate in particular is changed by the arrows vibrational movement, which is called the archers paradox. The archers paradox occurs not only in the right, left, upward, and downward directions, but in all directions. The optimized value of the archers paradox has not been studied yet. This paper proposes to measure the archers paradox to determine its optimized value. Measuring the archers paradox using a high-speed camera is expensive, and it is difficult to translate the result to a numerical value. However, the device for measuring the archers paradox proposed in this paper is inexpensive, and the results are easy to convert to a numerical value. Therefore, this device is more suitable for optimization of the archers paradox than a high-speed camera. In this paper, we propose to measure the size of the paradox using multipleframes,which can measure the position of an arrow moving at a speed of 300km/h to within millimeters. We calculate the size of the paradox experimentally using the measured location in each frame. This value is not an approximate value, but an accurate numerical value.
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