| Today's women's international badminton is multi-polarized,and many national women's badminton players have strong strengths.Dai Ziying,as the top player in today's women's badminton,also represents the highest level of women's badminton.In recent years,as the main opponent of the Chinese women's badminton team,it has repeatedly threatened the Chinese women's badminton team.This article uses Chen Yufei as a representative of the Chinese women's badminton team to study the speed and impact changes of Dai Ziying and Chen Yufei in six games in the past three years.Thus,Dai Ziying's technical and tactical characteristics are drawn,and he has made certain contributions to the development of the national badminton team.This article uses the sphere three-dimensional trajectory reconstruction system software to analyze the badminton game video,obtain the relevant data of the game,use the Excel table to classify and summarize the data collected in the relevant video analysis method;then enter the summarized data into Excel for execution Statistical integration,and finally use the program's drawing function to make the data into tables or graphs,analyze the game between the world's outstanding badminton players Chen Yufei and Dai Ziying,analyze the frontcourt,midfield,and backcourt speeds,and finally Perform technical analysis on the speed and landing area of the three beats,and finally perform statistical induction and summary.The 4514 shot data obtained was filtered and integrated through mathematical statistics,and the athlete's hitting speed,hitting reaction speed(hit reaction time)and displacement speed were obtained respectively;the badminton court ground model was established,and the athlete's hitting point was obtained.The distribution of the players;and divide the landing points in the stadium into twelve areas,and analyze the athletes' technical and tactical behavior from a more detailed landing area.This article mainly uses four methods: literature data method,video analysis method,mathematical statistics method,and comparative analysis method to expand:Documentary data method: Based on the discipline of badminton,I read 74 related literatures on badminton,and 33 effective references,including "badminton","technical and tactics","speed","Dai Ziying","Chen Yufei","quantitative","qualitative" and other main search terms were searched on the Chengdu Sport University Library,China Knowledge Network,Baidu Academic Network and other websites,including core journals and master and doctoral research papers.Provide sufficient research theory for the research of this subject,and provide a certain reference for the smooth opening of this research.Video analysis method: Collect the videos of the six finals participated by Chen Yufei and Dai Ziying,download the game videos from the official website of Aiyuke,watermelon video,and Tencent video,and use the sphere 3D trajectory reconstruction system software to analyze the badminton game video to get the game Relevant data provide favorable conditions for the conduct of research.Mathematical statistics: Import the obtained game video into the 3D technical and tactical acquisition system developed by Professor Shen Lejun(this system has been used in the collection of information for the national badminton team),and the hit points and ball landing points of each shot of the athletes in the game There are also three-dimensional position points of the athletes to be calibrated shot by shot.The information corresponding to each shot technique is specially calibrated to obtain the 3D technical and tactical data of 6 games.The calibration data includes the athlete's name,hitting technique,line,speed,3D information of hitting point,etc.This article mainly The three-dimensional data of technology,speed and points are used.Comparative analysis method: by collecting all the raw data of the athletes,sorting them into new charts,and comparing and analyzing the newly generated charts to find out the athlete's scoring technique usage and the comparative analysis of the scoring technique's speed,line and drop point.Provide reliable data analysis for Chinese coaches to improve the competitiveness of women's singles.After empirical research on the game,the article has the following conclusions:Chen Yufei's technical and tactical conclusions:1.In the process of hitting the front court,Chen Yufei's hitting speed,such as rubbing the ball,putting the net,hooking the ball,and dropping the ball,is faster than Dai Ziying's hitting speed.From the reaction time,we can see the reaction of the netting technique.Time Chen Yufei reacted faster than Dai Ziying.2.When studying the midfield displacement speed,Dai Ziying's speed is not as fast as Chen Yufei,so it is obvious that Dai Ziying's movement speed is obviously slower.3.In the lob technique,Chen Yufei hits the ball faster and performs better when playing the backcourt.From the perspective of reaction time,Chen Yufei reacted faster in lob and high shot techniques,but Chen Yufei was slightly inferior to Dai Ziying in terms of smashing techniques.4.Chen Yufei's serve is quite regular,often slashing the backcourt,the proportion of the ball before the net is far less than the proportion of the high and far ball.And from the chart,it can be seen that Chen Yufei's serve is easy to be targeted,too much use of the high ball,and the speed of the serve is slower than that of Dai Ziying.5.In the stage of receiving and serving the ball,Chen Yufei has a slow speed,weak offensive ability,and better field control ability.However,the increase in speed is not obvious,and it is clearly behind Dai Ziying.But the ball control is good.Therefore,for Chen Yufei,it is necessary to strengthen strength training and increase the speed of the ball.At the same time,maintain good control of the field and use changes in the position to strengthen defense.Dai Ziying's technical and tactical conclusions:1.Dai Ziying mainly pushes the ball in the frontcourt,and the angle of the ball is tricky.He is very confusing,has good strength and has a strong offensive ability.In the backcourt,the main goal is to kill the ball,and the proportion of kills is as high as 62.1%.The service is very offensive.2.In hitting the front court,Dai Ziying's hitting speed is faster than Chen Yufei's picking technique and putting technique.From the perspective of displacement speed,Dai Ziying's displacement speed when hitting various frontcourt balls is faster than Chen Yufei's.This shows that Dai Ziying's footwork is more sensitive.3.Dai Ziying has a slight advantage in hitting the ball in the midfield.Compared with Chen Yufei,she has a faster hitting speed and has a certain advantage in the technique of dribbling.It is obviously faster than Chen Yufei's hitting speed.Up to 6.2 m/s.4.In the backcourt,Dai Ziying still has a higher hitting speed in high and long shots,and his performance is better than Chen Yufei.In terms of displacement speed,Dai Ziying is in lob and high shots.To be more technically superior,we know that Dai Ziying's footwork is more flexible in the backcourt.5.Dai Ziying's serve is quite regular.When the serve point is #7,#11,he is more inclined to serve diagonally.When the first serve point is #2,#3,he is more inclined to serve.straight line.The overall instantaneous speed of Dai Ziying's second shot,especially the speed of smashing the ball,shows that Dai Ziying's strong offensive ability is very strong. |
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