Research Article
Frequency-Based Cable Tension Identification Using a Nonlinear Model with Complex Boundary Constraints
Table 2
Accurate and initial values of system parameters of the four cables.
| | No | Items | Hm (N) | EI (Pa∙m4) | EA (Pa∙m2) | Kr1 (N∙m) | Kr2 (N∙m) | Ks1 (N/m) | Ks2 (N/m) |
| | Cable 1 | Accurate value | 2.9036E6 | 7.9197E4 | 1.2552E8 | 1.5839E5 | 3.1679E5 | 3.9599E5 | 7.9197E5 | | Initial value | 2.3229E6 | 6.3358E4 | 1.0042E8 | 7.9197E4 | 1.5839E5 | 1.9799E5 | 3.9599E5 | | Initial error (%) | 20 | 20 | 20 | 50 | 50 | 50 | 50 |
| | Cable 2 | Accurate value | 7.2590E05 | 7.9222E04 | 1.3080E08 | 1.5844E05 | 3.1689E5 | 3.9611E5 | 7.9222E5 | | Initial value | 5.8072E05 | 6.3378E04 | 1.0464E08 | 7.9222E4 | 1.5844E5 | 1.9806E5 | 3.9611E5 | | Initial error (%) | 20 | 20 | 20 | 50 | 50 | 50 | 50 |
| | Cable 3 | Accurate value | 2.6133E7 | 1.0244E8 | 1.6371E11 | 2.0488E8 | 4.0976E8 | 5.1220E8 | 1.0244E9 | | Initial value | 2.0906E7 | 8.1952E7 | 1.3097E11 | 1.0244E8 | 2.0488E8 | 2.5610E8 | 5.1220E8 | | Initial error (%) | 20 | 20 | 20 | 50 | 50 | 50 | 50 |
| | Cable 4 | Accurate value | 7.2590E5 | 2.8464E6 | 1.3080E8 | 5.6928E6 | 1.1386E7 | 1.4232E7 | 2.8464E7 | | Initial value | 5.8072E5 | 2.2771E6 | 1.0464E8 | 2.8464E6 | 5.6928E6 | 7.1160E6 | 1.4232E7 | | Initial error (%) | 20 | 20 | 20 | 50 | 50 | 50 | 50 |
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