earticle

영어

The dynamic characteristics of the structure must be understood in order to design an efficient active seismic controller. Evaluating the parameters with precision is very crucial not only for accomplishing a low cost controller, but for preventing the structural control system from unstable behavior. These characteristics of the structures can be estimated from the measured
input-output data called the system identification, and then the dynamic behavior of structure can be thoroughly analyzed though a computer simulation, which leads to the way to come up with an excellent controller.
The purpose of the study is to evaluate the feasibility of the system identification method used in mechanical and electrical engineering applications to apply for the building structures subjected to seismic disturbance. The results show that the model behaves sensitively with respect to the lambda values. ARMA and ARMAX model showed relatively stable estimating performance
against changes of the lambda values, and superior estimating performance under the same value of the lambda comparing to ARX. The conclusion is that the ARMAX model can be the most suitable one to apply for building structure in the system identification.