@article{oai:nagasaki-u.repo.nii.ac.jp:00014308, author = {岡林, 隆敏 and 小西, 保則 and 龍, 博志 and 有角, 明}, issue = {32}, journal = {長崎大学工学部研究報告, Reports of the Faculty of Engineering, Nagasaki University}, month = {Jan}, note = {An algorithm of the nonliner least square method for the multi-degree of freedom curve fitting method is developed for obtaining the stable and convergent solution. An observation response of a structural system is simulated by adding Gaussian white noise to the response which is calculated by the impact response analysis for a Trussed Langer bridge based on the FEM modeling. The modal circle fitting method and the multi-degree of freedom curve fitting method are tested on simulation data varying SN ratio 0 to 20%. The numerical results are shown that the proposed procedure derives the stable solution and this solution has higher accuracy than the solution by the modal circle fitting method., 長崎大学工学部研究報告, 19(32), pp.71-78; 1989}, pages = {71--78}, title = {衝撃加振による道路橋の動的特性推定}, volume = {19}, year = {1989} }