✦ LIBER ✦

ON THE USE OF CONSISTENT AND SIGNIFICANT INFORMATION TO REDUCE ILL-CONDITIONING IN DYNAMIC MODEL UPDATING

✍ Scribed by W. D'Ambrogio; A. Fregolent

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 297 KB
Volume: 12
Category: Article
ISSN: 0888-3270
DOI: 10.1006/mssp.1997.0141

No coin nor oath required. For personal study only.

✦ Synopsis

A dynamic model updating technique, force residual updating-interactive technique (FRU-IT), is described. The technique is based on minimisation of the force (input) residual. Like most parametric identification problems, dynamic model updating is affected strongly by measurement errors due to the ill-conditioning of the problem. The proposed method is used to define and solve the set of updating equations in order to minimise the influence of measurement errors. This includes the selection of experimental degrees of freedom to ensure data consistency, the choice of the working frequencies to pursue data significance, and the use of regularisation techniques; specifically, an interactive use is made of the truncated singular value decomposition. The performance of the method is demonstrated by test cases.

📜 SIMILAR VOLUMES

Modeling, mapping, and managing critical

Modeling, mapping, and managing critical loads for forest ecosystems using a geographic information system: Approach of Wallonia, Belgium, to the study of long-range transboundary air pollution effects on ecosystems in Europe

✍ Sara Eloy 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 117 KB 👁 2 views

The Production of oil of American Wormse

The Production of oil of American Wormseed, U. S. P., in Illinois**This investigation was undertaken because the supply of wormseed oil has been for several years vcry inadequate to the demand, and this condition has prevented extensive use of the oil in the treatment of domestic animals—a field in which it is much needed. Owing to the low individual value of such animals as hogs, for example, it is not economical to treat them with a drug of such high price as wormseed oil. This paper is a report of the first year’s work in producing this oil at the Experiment Station of the Moorman Mfg. Co., Quincy, Ill. It is planned to continue the work on a much larger scale, covering every phase of the problem. Anyone wishing to produce the oil can obtain the full cooperation of this company on request.

✍ Konantz, W.A. 📂 Article 📅 1924 🏛 Elsevier ⚖ 408 KB 👁 2 views