Inverse Analysis of Circular Cylindrical Shell Using Variable Parametric Projection Filter
Variable parametric projection filter (VPPF) is constructed as inverse analysis procedure to identify the system rigidity and water level of cylindrical shell structure. Parametric projection filter has been known as one of effective filter like the Wiener and projection filter. As the characteristics of the parametric projection filter, the regularization parameter to assume the stable filtering process is included. In the conventional inverse analyses using the filtering algorithm based on parametric projection filter, an arbitrary value has been given for the regularization parameter. In this study, the procedure to give the regularization parameter computationally in each filtering step is presented instead of an arbitrary value as shown in figure1 (Variable Parametric Projection Filter:VPPF).z0=2(initial estimation)m(z0)→A0(z0=A0m(z0))(linear mapping)B0=A0→z1=z0+A0｛y0-m(z0)｝=A0yo(the first approximation of estimation vector)m(z1)→A1(z1=A1m(z1))B1=A1→z2=z1+A1y1-m(z1)=A1y1(the second approximation of estimation vector)…zn+1=zn+Anyn-m(zn)=Anyn(the nth approximation of estimation vector)Figure1 Flow of Variable Parametric Projection Filter:VPPF.The effectiveness of proposed VPPF is shown through comparison of some numerical calculations based on another filters.
A.Satoda R.Endo N.Tosaka
Advanced Civil Technology & Seismic Engineering Unit,Chiyoda Advanced Solutions Corporation Department of Architectural System Engineering,Polytechnic University,Kanagawa,Japan Department of Architecture,Tokyo Denki University,Tokyo,Japan
国际会议
南京
英文
1
2009-10-18（万方平台首次上网日期，不代表论文的发表时间）