| 乒乓球的动态特性——旋转与速度相对原理 |
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| 引用本文： | 韩同康.乒乓球的动态特性——旋转与速度相对原理[J].体育科学,1994(6). |
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| 作者姓名： | 韩同康 |
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| 作者单位： | 国家体委科研所 北京 |
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| 摘 要： | 乒乓球的旋转与速度存在着相对关系,是乒乓球技术中的普遍规律。在论证中提出了相对速度与球心速度之比作为特征准数,将点的运动轨迹分为三类,分别为“螺旋线”“波纹线”和“旋轮线”。从而将复杂的乒乓球技术划分为“旋转型”“速度型”和“综合型”三种基本类型。运动员击球的点在第二轨迹不同的位置上合成速度不相等。因此,运动员在第二轨迹的不同阶段击球手感旋转不相同,而且该点的合成速度矢量决守乒乓球技术的打法特征。根据高吊弧圈球与前冲弧圈球的特征准数不同,说明了运动员对这两种球型接球手感旋转不同的原因。
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| 关 键 词： | 动态特性 旋转 速度 相对原理 特征准数 运动轨迹 合成速度 |
The Dynamic Characteristic of Table Tennis: Relative Principle between Spin and Speed |
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| Han.The Dynamic Characteristic of Table Tennis: Relative Principle between Spin and Speed[J].China Sport Science,1994(6). |
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| Authors: | Han |
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| Abstract: | Relative principle between spin and speed is a universal law in table tennis techneque. In our paper, we put forward the view point that the ratio of relative speed and the hub speed of the ball is the characteristic standard number and there are three types of motion locus of every point on the ball. They are "helical line", "wave line",and "spinning line". Therefore,the complicated technique of table tennis can be classified into three basic types; "spinning type", "speed type",and"comprehensive type". A ball hitted at the different points of the second locus has different composite forces. Thus,a player can have the feel of different composite forces. Thus,a player can have the feel of different spinning by hand when he hits the ball at the different stages of the second locus , and the composite speed vector of that hitting point determines the characteristic of play in the table tennis technique. The different characteristic standard numbers of lobbing, looping and fast loop drive indicate the reason why the player has the feel of different spinning by hand in lobbing and looping. |
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| Keywords: | dynamic characteristic spin speed relative principle characteristic standard number motion locus composite speed |
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