Research Article
[Retracted] Research on Optimal Control Method of Tennis Racket String Diameter Based on Kalman Filter Algorithm
Table 1
The speed and control score of different material groups.
| NO | 16L polyester thread | 16L nylon imitation gut | NO | 16L polyester thread | 16L nylon imitation gut | NO | 16L polyester thread | 16L nylon imitation gut |
| 1 | 105.16 | 104.45 | 17 | 101.71 | 101.25 | 33 | 118.21 | 103.35 | 2 | 105.84 | 102.42 | 18 | 100.27 | 115.76 | 34 | 106.25 | 104.76 | 3 | 110.81 | 108.09 | 19 | 110.01 | 107.51 | 35 | 105.26 | 100.20 | 4 | 113.46 | 98.92 | 20 | 113.58 | 97.00 | 36 | 118.52 | 102.41 | 5 | 104.02 | 99.34 | 21 | 104.29 | 100.00 | 37 | 104.87 | 105.54 | 6 | 102.36 | 105.78 | 22 | 118.09 | 101.86 | 38 | 108.94 | 112.88 | 7 | 100.19 | 107.17 | 23 | 114.08 | 110.60 | 39 | 104.53 | 110.46 | 8 | 111.09 | 115.57 | 24 | 118.83 | 102.46 | 40 | 109.35 | 116.20 | 9 | 102.31 | 113.70 | 25 | 100.27 | 107.58 | 41 | 115.93 | 112.70 | 10 | 101.15 | 105.89 | 26 | 109.85 | 108.01 | 42 | 118.08 | 109.40 | 11 | 112.51 | 113.80 | 27 | 107.89 | 108.46 | 43 | 101.42 | 108.06 | 12 | 100.22 | 110.68 | 28 | 113.63 | 109.02 | 44 | 112.92 | 102.42 | 13 | 104.82 | 99.30 | 29 | 113.86 | 100.70 | 45 | 111.91 | 113.30 | 14 | 103.74 | 107.76 | 30 | 118.19 | 114.16 | 46 | 117.28 | 110.26 | 15 | 115.48 | 98.46 | 31 | 111.35 | 100.59 | 47 | 113.90 | 108.37 | 16 | 108.65 | 110.35 | 32 | 103.67 | 112.77 | 48 | 102.69 | 105.15 |
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