查詢結果分析
來源資料
相關文獻
- 旋轉球體轉軸與轉速測量方法之研究
- 旋轉電極銅粉末設備之研製
- Critical Speeds and Critical Axial Loads of Overhung Shaft-Disk Systems
- Sonographic Signs of Complete Rotator Cuff Tears
- 高爾夫下桿動作中頭頂上之軀幹旋轉軸點的運動模式分析
- Theoretical Study for the Rotational Shaft under the Transient Condition
- 無轉軸偵測器感應電動機定子磁場導向轉速控制系統之研製
- On the Local Heat Transfer of the Flow through a Non-aligned Rotating Straight Pipe
- 不同邊界限制下之旋轉軸管其應力公式之理論推導
- 一種簡單旋轉軸誤差量測系統之開發
頁籤選單縮合
題名 | 旋轉球體轉軸與轉速測量方法之研究=The Measuring Method for the Spin Axis and the Rate of the Rotational Ball |
---|---|
作者 | 邱永興; 涂瑞洪; Chiu, Yung-hsing; Tu, Jui-hung; |
期刊 | 大專體育學刊 |
出版日期 | 20060900 |
卷期 | 8:3 民95.09 |
頁次 | 頁139-147 |
分類號 | 528.9011 |
語文 | chi |
關鍵詞 | 旋轉; 轉軸; 轉速; 垂直平分面; Rotation; Spin axis; Spin rate; Perpendicular bisecting plane; |
英文摘要 | Up to the present, there have been few documents providing the actual measuring methods that could calculate the kinematics parameters (KPs) of the free rotational ball. Most studies just mentioned the KPs' influence on aerodynamic lift force, but there was no valid and actual measuring method for research. This study was to develop an effective method for measuring the spin rate and the axis of the free rotational ball, and estimate the accuracy of this method. The variation of the simulated spherical surface that rotated in the sky was taken and the mathematical principle of perpendicular bisecting plane in measuring the spin axis of the three-dimensional rotational ball was applied. The study employed 2 JVC digital cameras with 120 Hz in the course of shooting. Furthermore, the films were digitized with APAS software (Ariel Performance Analysis System) to determine the instantaneous axis of rotation and the spin rate of the ball. The results of the study showed that this study utilized 3-D cinematography analysis and connected with the mathematical principle of perpendicular bisecting plane to develop a kind of method to effectively and actually measure the spin rate and the axis of the free rotational ball in the sky by the displacement changes of any two markers that marked the point on the surface of the sphere. The overall accuracy for SEE% was 5.2% and 1.8% respectively. This study provided the important rotation measurement bases for some relevant studies such as aerodynamics. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。