Research Article
Stress Measurement of Steel Strands Based on System Identification Method
Table 2
Identification model parameters in different tension force.
| Stress | Parameter | | | | | | | | | | |
| 0.2 fpk | −2.525 | 1.977 | −0.042 | −0.476 | −0.171 | 0.521 | −0.316 | 0.068 | −0.057 | 0.060 | 0.3 fpk | −2.491 | 1.955 | −0.158 | −0.364 | −0.075 | 0.348 | −0.205 | 0.030 | −0.083 | 0.082 | 0.4 fpk | −2.518 | 2.083 | −0.358 | −0.249 | −0.088 | 0.278 | −0.056 | −0.046 | −0.118 | 0.110 | 0.5 fpk | −2.558 | 2.22 | −0.493 | −0.286 | 0.057 | 0.181 | −0.043 | 0.005 | −0.170 | 0.124 | 0.6 fpk | −2.653 | 2.546 | −0.852 | −0.226 | 0.241 | −0.123 | 0.346 | −0.332 | 0.016 | 0.069 | 0.7 fpk | −2.656 | 2.652 | −1.111 | −0.013 | 0.223 | −0.161 | 0.261 | −0.143 | −0.124 | 0.106 |
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