Development of the Small-displacement-movement of a Pneumatic piston and the Hybrid Control Algorithm for Precision Position Control

정밀 위치제어를 위한 공압 피스톤의 미소변위 이송방법 및 혼합 제어 알고리즘 개발

  • 노철하 (금오공과대학교 기계공학부 대학원) ;
  • 김영식 (금오공과대학교 기계공학부)
  • Published : 2001.07.01

Abstract

This paper proposes a methodology for the small-displacement-movement of a piston and develops a hybrid control algorithm for the precision position control of a pneumatic rodless cylinder. The pneumatic system uses the voltage-proportional solenoid valves to minimum valve switching since the on/off type valves are create diffculties for accurate position control and induce a lot of valve switching. For the accurate position control a methodology for the small-displacement-movement of the piston is developed and identified experimentally. The main consideration on the development of the hybrid control law is to eliminate a stick-slip phenomenon in the pneumatic control system. This paper addresses these critical issues and presents experimental results for the pneumatic control system.

Keywords

References

  1. Nroitsugu, T., 'Pulse-width-modulated Feedback Force Control of a Pneumatically Powered Robot HAND', Proc. of International Symposium on Fluid Control and Measurement, Tokyo, pp. 47-52, 1985
  2. Lai, J. Y., 'Accurate Position Control of a Pneumatic Actuator,' ASME J. of Dynamic Systems, Measurement and Control, Vol. 112, pp. 734-739, 1990
  3. 최 서호, 홍 예선, 이 정오, '공기압 서보 시스템의 위치제어 및 시뮬레이션에 관한 연구,' 한국 정밀 공학회지, 제 13 권, 제 6 호, 1996년 6 월
  4. Linnet, J. A. and Smith, M. C., 'Accurate Position Control of a Pneumatic Position Control System,' Proc. IME, Vol. 203B, pp. 159-165, 1989
  5. Fillipov, A. F., 'Differential Equations with Discontinuous Right-hand Side,' American Mathematical Society Translation Series 2, Vol. 42, pp. 199-231, 1963
  6. Utkin, V. I., 'Variable Structure Systems with Sliding Modes,' IEEE Trans. Automatic Control, Vol. AC-22, No. 2, pp. 212-222, 1977
  7. Slotine, J. J. and Sastry, S. S., 'Tracking Control of Non-linear Systems Using Sliding Surface with Application to Robot Manipulator,' Int. J. of Control, Vol. 38, No. 2, pp. 421-434, 1983