System Identification of Flexible beam Using Eigensystem Realization Algorithm

Eigensystem Realization Algorithm을 이용한 유연한 빔의 운동방정식 규명

  • 이인성 (영남대학교 기계공학과 대학원) ;
  • 이재원 (영남대학교 기계공학과) ;
  • 이수철 (대구대학교 산업자동차공학부)
  • Published : 2000.04.20

Abstract

The System identification is the process of developing or improving a mathematical model of a physical system using experimental data of the input, output and noise relationship. The field of system identification has been an important discipline within the automatic control area. The reason is the requirement that mathematical models having a specified accuracy must be used to apply modem control methods. In this paper, it is confirmed that we can obtain transfer function of flexible beam that is expressed in the forms of identified state-space system matrix A, B, C, D and identified observer gain G using Eigensystem Realization Algorithm including singular value decomposition. And these matrices can be applied to the automatic control. In addition to, it is also confirmed that transfer function can express a system using identified observer gain G, in spite of a noisy data or a periodic disturbance.

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