Analysis Of The Spatial Utility Of The World's Outstanding Badminton Men's Singles Players In The Three-dimensional Space

This paper collects and analyzes the interaction between Li Chongwei?Viktor Axelsen? Chen Long and Lin Dan in the 2016-2017 major events through the methods of literature review ? ball three-dimensional trajectory reconstruction?comparative analysis and mathematical statistics.Taking the height of their batting as the main breakthrough point of the research,the three-dimensional space of the badminton court is re-divided.According to the frequency of technical use and the hitting effect of the world's best badminton men's singles players in three-dimensional space,a quantitative evaluation Theoretical Model of Athlete Decision-making Behavior-Spatial Utility.The main research results are as follows: 1.After quantifying the average heights of the batting skills of the elite male badminton players in the world,it can be seen that there are some similarities in hitting height between the four athletes: the average height of the pick-up balls is the lowest,and the average strike-kill The ball is the highest 2.After the world's elite badminton men's singles players hit the ball point of the visual processing of visualization,found that the athletes hit the ball showing two high,low "V" shape.3.According to the three-dimensional space division of the badminton court,we can get that: in the H space below the net 1.55 m,the hitting frequency accounted for 62.84%;in the M space of 1.55~2.5m,the hitting frequency accounted for 21.47%;In the H space higher than 2.5m,the hitting frequency accounted for 15.68%.The proportion of the athlete's shot space is represented by L space> M space> H space.4.According to the result of the analysis,this paper renames the attribute of hitting space: in L space,athletes mainly choose to pick the ball,rub the ball and block the ball.Therefore,L space is defined as the defense space of Badminton.In M space,the athletes are mainly hanging balls and lofty balls,so M space is defined as the transition space of Badminton game.In the H space,the athlete's technology is mainly the smash,the H space is defined as the attack space of the badminton(Assault-Space).5.Based on the statistics of gain and loss in three-dimensional space,the athlete's ability of active scoring is the strongest in H space and the most in L space.Detailed to 36-space,we can see that Lee's "sweet spot" is space 33,the most frequent mistakes are space 8;Axelsen's "sweet spot" is space 35,and the most frequent mistakes are space 4;Chen Long's "sweet spot" is Space 34,with the largest frequency of mistakes being Space 1;"Sweet Space" is Space 35 of Lin Dan,with the highest frequency of mistakes being Space 1.6.As a rational decision model,spatial utility can objectively quantify the decision-making of athletes in a certain space: in L space,Chen Long has the highest utility value and Axelsen has the lowest utility value;in M space,Li Chongwei has the highest utility value and Lin Dan has the lowest utility value.In H space,Chen long has the highest utility value and Li Chongwei has the lowest utility value.