抽象的な

Table tennis changes to movement trajectory influence research based on fuzzy comprehensive evaluation and differential equation

Shanshan Li, Yong Li, Chao Yang

The paper firstlymakes force analysis of table tennis when lifting the ball, and according to moment of momentum theorem, it gets rotational speed and diameter inverse ratio relations; then it makes force analysis of air movement table tennis, and gets kinematic equation.After diameter getting big, ball speed and rotational speed get small, and ballmovement time gets long, let opponent probability of receiving the ball and fighting back increase. And establish analytic hierarchy process and fuzzy comprehensive evaluation test model to test. It concludes that big ball promotes competition appreciation relative to small ball, but playersÂ’ competition experiences reduce