北京体育大学学报
北京體育大學學報
북경체육대학학보
Journal of Beijing University of Physical Education
2012年
9期
130~133
,共null页
切入差 不分道项目起跑线 渐开弧线
切入差 不分道項目起跑線 漸開弧線
절입차 불분도항목기포선 점개호선
cut-in differential; regardless of the starting line; involute curve
《田径场地设施标准手册》中,800 m跑抢道线和不分道项目起跑线是一条渐开弧线,其切入差仅用图解、列表等方法表示,计算方法不够严谨,得出数据较模糊。运用列参数方程,牛顿迭代法,对田径运动场地径赛800 m跑抢道线和切入差以及不分道项目起跑线,应用计算机C＋＋语言编制程序进行运算,得出数据较国际田联《田径场地设施标准手册》所提供的数据更为精准。
《田徑場地設施標準手冊》中,800 m跑搶道線和不分道項目起跑線是一條漸開弧線,其切入差僅用圖解、列錶等方法錶示,計算方法不夠嚴謹,得齣數據較模糊。運用列參數方程,牛頓迭代法,對田徑運動場地徑賽800 m跑搶道線和切入差以及不分道項目起跑線,應用計算機C＋＋語言編製程序進行運算,得齣數據較國際田聯《田徑場地設施標準手冊》所提供的數據更為精準。
《전경장지설시표준수책》중,800 m포창도선화불분도항목기포선시일조점개호선,기절입차부용도해、렬표등방법표시,계산방법불구엄근,득출수거교모호。운용렬삼수방정,우돈질대법,대전경운동장지경새800 m포창도선화절입차이급불분도항목기포선,응용계산궤C＋＋어언편제정서진행운산,득출수거교국제전련《전경장지설시표준수책》소제공적수거경위정준。
In the IAAF Track and Field Facilities Manual,the cut-in line in 800 m running and the starting line of the events regardless of the starting line is an involute curve.Its cut-in differentiation is shown by diagrams and tables.The calculation method is not precise enough and the data obtained are ambiguous.This study adopts the method of line parameter equations and Newton＇s iterative method to conduct calculation by C＋＋ language programming in computer to the cut-in line,cut-in differentiation and starting line of the events regardless of starting line to make the data obtained in the IAAF Track and Field Facilities Manual more precise.
