Improved eigensystem realization algorithm and its application on ocean platforms
Based on the matrix mapping theory, an improved eigensystem realization algorithm (ERA), called C/ERA, is proposed in this paper. It rebuilds a Hankel matrix by replacing all elements of each anti-subdiagonal with the arithmetic average of the elements along the anti-subdiagonal, and introduces the...
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| Veröffentlicht in: | Cluster computing 2019-03, Vol.22 (Suppl 2), p.3643-3650 |
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| creator | Xin, Junfeng Lei, Wang Shixin, Li Yongbo, Zhang |
| description | Based on the matrix mapping theory, an improved eigensystem realization algorithm (ERA), called C/ERA, is proposed in this paper. It rebuilds a Hankel matrix by replacing all elements of each anti-subdiagonal with the arithmetic average of the elements along the anti-subdiagonal, and introduces the concept of using the Frobenius norm (L2-norm) to control the iterations number after implementing the SVD algorithm by the ERA method. With the data associated with a 5-DOF mass-spring-dashpot system and jacket-type platform under impact loading, it is demonstrated that C/ERA has a better capacity of de-noising, and a higher accuracy for low-order modes, and can identify more high-order modes than the ERA method. |
| doi_str_mv | 10.1007/s10586-018-2213-0 |
| format | Article |
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| subjects | Algorithms Computer Communication Networks Computer Science Eigenvalues Hankel matrices Impact loads Methods Operating Systems Parameter identification Processor Architectures Simulation |
| title | Improved eigensystem realization algorithm and its application on ocean platforms |
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