Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지

A Study on the Characteristics Improvement of Fluid Power Actuator Using Adaptive Control

적응제어를 이용한 유압 액츄에이터의 특성개선에 관한 연구

  • 염만오 (경남대학교 기계자동화공학부) ;
  • 윤일로 (경남대학교 기술혁신센터)
  • Published : 2004.01.01
Download PDF
⟨ Previous Next ⟩

Abstract

A hydraulic system is difficult to keep the performance due to non-linearity, load pressure which changes according to working condition and system parameter variation, the requirement of control algorithm has been risen in order to satisfy them. An adaptive control is a control method which is suggested to achieve a control object though plant characteristics change. In spite of the case that plant characteristics and the degree of variation are difficult to grasp, adaptive control can keep the characteristics of closed-loop system regularly. In this study GMVAC(generalized minimum variance adaptive control) combined with output error feedback is proposed in order to solve problems of non-minimum phase, vibration and overshoot in initial response of the plant. The control performance according to the variation of characteristics of the plant is evaluated by changing the supply pressure only.

Keywords

References

  1. Hanabusa, 'Recent Trends and Expansion of the Hydraulic Servo Technique,' J. of the Study on Mech., Vol. 33, No. 1, pp. 7-14, 1981
  2. Hanabusa, Ida, 'Management of Non-Linearity Characteristic in the Servo System,' J. of the Measurement & Control, 1978
  3. Kanai, Y., 'Robust Adaptive Control,' Ohm Publisher, 1990
  4. Yamahashi, K., Ikos, S.,Takahashi, K., 'Application of Explicit Model Reference Adaptive Control Theory to an Electrohydraulic Servo-system,' J. of the Hydraulic & Pneumatic, Vol. 20, No. 7, pp. 71-78, 1987
  5. Kim, K. H., Yoon, I. R., Park, J. B., Kim, J. K., Yum, M. O., 'A Study on the Electro Hydraulic Servo System by Using Model Reference Adaptive Control,' J. of the KSPE, Vol.14, No.5, pp. 92-99, 1997
  6. Clarke, D.W., 'Self-Tuning Control of Non-Minimum Phase System,' Automatica. Vol. 20, No. 5, pp. 501-517, 1984 https://doi.org/10.1016/0005-1098(84)90003-7
  7. Ichigawa, K. 'Control System Design Method[III],' J. of the Measurement & Control, Vol. 23, No. 8, pp. 701-705, 1984
  8. Narendra, K. S. and Monopoli, R. V., 'Application of Adaptive Control,' Academic Press, 1980