최소자승법에 의한 전기유압식 서보시스템의 모델링 및 파라미터 평가

Modeling and Parameter Estimation of an Electrohydraulic Servo System by the Least Square Method

  • 노형우 (한양대학교 대학원 정밀기계공학과) ;
  • 송창섭 (한양대학교 기계공학부)
  • 발행 : 2000.10.01

초록

By using the test of signal error, model structure of an electrohydraulic servo system is determined. For determining parameter of the electrohydraulic servo system, using time discrete model of parametric method, parameters in time discrete model are searched by the least square method. By bilinear transform, we have found the model of electrohydraulic servo system in s domain. Afterwards, we have compared experimental data with simulation data by MATLAB having the identified parameter. As the result, experimental data is agreed with simulation data very well.

키워드

참고문헌

  1. R. Isermann, 'Identifikation dynamischer system 1, 2,' Springer-Lehrbuch, 1991
  2. Lennart Ljung, 'System identification second edition,' Prentice hall, 1999
  3. 이용주, 송창섭, '전기유압 서보 시스템의 비표준 PID제어에 관한 연구,' 한국정밀공학회 지, 제14권, 제11호, pp. 25-33, 1997
  4. H. Unbehauen & B. Goehring, 'Tests for determing model order in parameter estimation,' Automatica, Vol. 10, pp. 233-244 https://doi.org/10.1016/0005-1098(74)90034-X
  5. Peter Young, 'parmeter estimation forcontinuous-time model- A survey,' Automatica, Vol. 17, No. 1, pp. 23-39, 1981 https://doi.org/10.1016/0005-1098(81)90082-0
  6. Simulink manual, math works Inc.
  7. Merrit, H. E., 'Hydraulic control system,' John Wiley & Sons, 1967
  8. Ogata, 'Modern Control Engineering,' prentice hall