... at the Conference on Mathematics, Mechanics, and Informatics, Hanoi, 7/10/2006, on the occasion of 50th Anniversary of Department of Mathematics, Mechanics and Informatics, Vietnam National ... combination of the identification algorithm and the modal superposition method for feedback active control of incomplete measured systems N.D. Anh*, L.D. Viet Institute of Mechanics, 264 Doi can, ... 40 GPa and the damping ratios for all modes are assumed to be 2%. Using the method of separation of variables, the governing partial differential equation of the beam is represented by a system...