일반화최소분산 적응제어를 이용한 유압 서보계의 특성개선에 관한 연구

Characteristics Improvement of Hydraulic Servosystem by Using Generalized Minimum Variance Adaptive Control

  • 박용호 (부산대학교 대학원 지능기계공학과) ;
  • 김기홍 (구미1대학 기계설계과) ;
  • 이진걸 (부산대학교 기계공학부)
  • 발행 : 2003.05.01

초록

Hydraulic system is difficult to obtain a suitable performance due to the nonlinearity load pressure change and system parameter variation. The requirement of control a1gorithm has been complex in order to satisfy the performance. The adaptive control is a control method which is suggested to achieve the control object under the plant characteristics change. In spite of the case that plant characteristics and the degree of variation are difficult to grasp. the adaptive control could keep the characteristics of closed-loop system generally. In this study. a method of combined generalized minimum variance adaptive control (GMVAC) and output error feedback is proposed, in order to solve the problem of non-minimum phase of plant and the vibration and overshoot in initial response. The control performance according to the variation of characteristics of plant is evaluated by changing the supply pressure. The experimental results show the effectiveness of the proposed scheme.

키워드

참고문헌

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