数学模型在南瓜估重中的应用

Application of Mathematic Modeling in Pumpkin Weighing

从准确性角度考虑,通过建立剖面旋转模型,将南瓜的垂直剖面依次近似为梯形、椭圆形与柱面形,利用曲面积分求得较为精确的南瓜体积公式;从简化性角度考虑,采用定性方式,通过模糊综合判别法,简化南瓜估重公式,为企业提供参考。

First,from the view of accuracy,by building the revolved section model,trapezium,oval and cylinder were taken one by one as the approximation of the pumpkin＇s vertical section ,using the curved surface integral ,a quite accurate formula of the pumpkin＇s bulk was gotten. Then, considering simplicity,the formula was simplified through qualitative way and the fuzzy synthesis discriminance to provide references for companies.