Browse > Article
http://dx.doi.org/10.3795/KSME-A.2004.28.11.1719

Lead-Lag Controller Design of Direct Drive Servo Valve Using Complex Method  

Lee, Seong-Rae (건양대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.28, no.11, 2004 , pp. 1719-1726 More about this Journal
Abstract
Direct drive servovalve(DDV) is a kind of one-stage valve because the main spool valve is directly driven by the DC motor. Since the structure of DDV is simple, it is less expensive, more reliable and offers reduced internal leakage and reduced sensitivity to fluid contamination. However, the flow force effect on the spool motion is significant such that it induces large steady-state error in a step response. If the proportional control gain is increased to reduce the steady-state error, the system becomes unstable. In order to satisfy the system design requirements, the lead-lag controller is designed using the complex method that is one kind of constrained direct search method.
Keywords
Direct Drive Servo Valve; Lead-Lag Controller; Complex Method; Constrained Direct Search;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Elmqvist, H., Astrom, K. J., Schonthal, T., Wittenmark, B., 1990, SIMNON User's Guide for MS-DOS Computers, SSPA Systems
2 Fleisher, W. A., 1989, 'Brushless Motors for Limited Rotation,' Machine Design, December 7, pp.101-105
3 Merritt, H. E., 1967, Hydraulic Control Systems, John Wiley and Sons, Inc, pp. 754-763
4 Shahian, B., Hassul, M., 1993, Control System Design Using MATLAB, Prentice Hall, pp.189-192
5 Lee, S. R., Kim, J. Y. and Kim, C. B., 2000, 'Study for the Controller Design of a Direct Drive Servo Valve,' Proceedings of the 15th KACC, CD 179rd.hwp.   과학기술학회마을
6 Reklaitis, G. V., Ravindran, A. and Ragsdell, K., 1983, M., Engineering Optimization Methods and Applications, John Wiley & Sons, Inc., pp. 268-277
7 Lee, S. R., Choi, H. Y. and Moon, E. J, 2002, 'Classical Controller Design of Direct Drive Servo Valve Using Analytical Bode Method,' Transactions of the KSME A, Vol. 26, No.4, pp. 754-763   과학기술학회마을   DOI