Research Article
[Retracted] Research on Optimal Control Method of Tennis Racket String Diameter Based on Kalman Filter Algorithm
Table 2
The 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 | 4.55 | 5.11 | 17 | 4.76 | 4.25 | 33 | 5.78 | 4.34 | 2 | 5.44 | 5.55 | 18 | 4.92 | 5.03 | 34 | 4.91 | 3.92 | 3 | 4.50 | 4.30 | 19 | 5.39 | 4.57 | 35 | 5.66 | 5.44 | 4 | 5.31 | 4.47 | 20 | 4.71 | 4.49 | 36 | 5.15 | 4.31 | 5 | 5.38 | 5.62 | 21 | 4.58 | 3.93 | 37 | 5.04 | 5.26 | 6 | 5.74 | 5.26 | 22 | 5.81 | 5.26 | 38 | 5.23 | 5.49 | 7 | 5.37 | 5.38 | 23 | 5.74 | 4.24 | 39 | 5.11 | 4.33 | 8 | 4.54 | 4.71 | 24 | 5.68 | 4.85 | 40 | 4.85 | 5.43 | 9 | 4.89 | 5.27 | 25 | 5.21 | 4.11 | 41 | 5.22 | 4.75 | 10 | 4.79 | 5.44 | 26 | 5.24 | 5.08 | 42 | 4.82 | 4.27 | 11 | 5.17 | 5.35 | 27 | 5.02 | 4.66 | 43 | 4.76 | 4.07 | 12 | 5.02 | 4.82 | 28 | 4.56 | 5.13 | 44 | 4.35 | 4.48 | 13 | 4.68 | 4.41 | 29 | 5.60 | 5.44 | 45 | 5.74 | 3.88 | 14 | 4.53 | 5.02 | 30 | 5.85 | 5.20 | 46 | 5.83 | 4.19 | 15 | 4.50 | 5.64 | 31 | 5.00 | 5.13 | 47 | 4.45 | 5.07 | 16 | 4.50 | 4.03 | 32 | 4.61 | 4.60 | 48 | 4.93 | 4.49 |
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