Browse > Article

A Study on The Actual Application of the Least Order Load Observer and Effective Online Inertia Identification Algorithm for High Performance Linear Motor Positioning System  

Kim, Joohn-Sheok (인천대학 전기공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.56, no.4, 2007 , pp. 730-738 More about this Journal
Abstract
As well known when the linear machine is operated between two points repeatedly under positioning control, there are various positioning error at the moment of zero speed owing to the non-linear disturbance like as unpredictable friction force. To remove this positioning error, a simple least order disturbance observer is introduced and is actually implemented in this study. Due to this simple algorithm the over-all machine system can be modified to simple arbitrary given one-mass load without any disturbance. So, the total construction process for positioning control system is much easier than old one. Moreover, to generate a proper effective position profile with the limited actual machine force, a very powerful on-line mass identification algorithm using the load force estimator is presented. In the proposed mass identification algorithm, the exact load mass can be calculated during only one moving stage under a normally generated position profile. All presented algorithm is verified with experimental result with commercial linear servo machine system.
Keywords
least order disturbance observer; Load mass identification algorithm; linear machine positioning system;
Citations & Related Records

Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 Robert D.Lorenz, 'High-Resolution Velocity Estimation for All-Digital AC Servo Drives', IEEE Trans.IA, vol.27, no.4, Aug. 1991
2 T.Yamada, M.Mori, Y.Yoshida and M.Date,'A Method for Improving Speed Control Characteristics At Very Low Speed Region by The Least Order Disturbance Observer'(in Japanese), IEEJ-D Vol 114 No.4, 1994
3 K.Kubo, M.Watanabe, F.Kozawa, and K.Kawasaki,' Disturbance Torque Compensated Speed Observer For Digital Servo Drives', IECON'90, pp.1182-1187, 1990
4 S.J.Hong, H.W.Kim,and S.K.Sul,' A novel inertia identification method for speed control of electric machine' ,IEEE IECON,pp.1234-1239,1994
5 K.B. LEE,J.H. SONG,I. choy.and J.Y.Yoo,'An inertia identification using ROELO for low speed control of electrix machine,IEEE APEC,pp.1502-1055, 2003
6 B.Friedland and Y.J Park, 'On Adaptive Friction Compensation', IEEE Trans on Automatic Control, Vol 37, No.10 pp 1609-1612, 1992   DOI   ScienceOn
7 김준석, '이득 설계가 간단한 선형전동기 구동용 고성능 통합 PID 위치제어기 구현' Tran. KIEE Vol. 51B, No.4 Apr. 2002
8 C.T.Johnson And R.D.Lorenz, 'Experimental Identification of Friction and Its Compensation in Precise, Position Controlled Mechanisms', IEEE TRAN. ON l.A., VOL. 28, NO.6, 1992
9 S.J.Kim, S.Y.Kim, And I.J. Ha,'An Efficient Identification Method for Friction in Single-DOF Motion Control Systems', IEEE TRAN. ON CONTROL SYSTEMS TECHNOLOGY, VOL. 12, NO. 4, JULY, 2004
10 K.B. Lee, J.Y. Yoo, J.H. Song and I.Choy, 'Improvement of low speed operation of electric machine with an inertia identification using ROELO' IEE Proc.-Electr. Power Appl., Vol. 151, No.1, January 2004