Intelligent Control of Pneumatic Actuator using On/Off Valve

On/Off 밸브를 이용한 공압 실린더의 지능제어

  • 안경관 (울산대학교 기계자동차공학부) ;
  • 표성만 (울산대학교 기계자동차공학과 대학원) ;
  • 송인성 (울산대학교 기계자동차공학과 대학원) ;
  • 이병룡 (울산대학교 기계자동차공학부) ;
  • 양순용 (울산대학교 기계자동차공학부)
  • Published : 2003.08.01

Abstract

The development of a fast, accurate, and inexpensive position-controlled pneumatic actuator that may be applied to a variety of practical positioning applications with various external loads is described in this paper. A novel modified pulse width modulation (MPWM) valve pulsing algorithm allows on/off solenoid valves to be used in place of costly servo valves. A comparison between the system response of standard PWM technique and that of the novel modified PWM technique shows that the control performance is significantly increased. A state feedback controller with position, velocity and acceleration feedback is successfully implemented as the continuous controller. Switching algorithm of control parameter using learning vector quantization neural network (LVQNN) is newly proposed, which estimates the external loads of the pneumatic actuator. The effectiveness of the proposed control algorithms are demonstrated through experiments with various loads.

Keywords

References

  1. Eric J. Barth, Jianlong Zhang and Michael Goldfarb, 'Sliding Mode Approach to PWM-Controlled Pneumatic Systems,' Proc. of the American Control conference Anchorage, AK, May 8-10, 2002 https://doi.org/10.1109/ACC.2002.1023995
  2. Bobrow, J. E. and Jabbari, F., 'Adaptive Pneumatic Force Actuation and Position Control,' ASME J. Dynamic Syst., Measur., Contr., Vol. 113, pp. 267-272, June 1991 https://doi.org/10.1115/1.2896374
  3. Choi, S. H., Hong, Y. S., Lee, C. O., 'A Study on the Position Control and Simulation of Pneumatic Servo System,' J. of the KSPE, Vol. 13, No.6, pp. 102-113, 1996
  4. Noritsugu, T. and Takaiwa, M., 'Robust Position of Pneumatic Servo System with Pressure Control Loop,' Proc. IEEE int. Conf. Robotics and Automation, Vol. 3, pp. 2613-2618, May 1995 https://doi.org/10.1109/ROBOT.1995.525651
  5. Tang, J. and Walker, G., 'Variable Structure Control of a Pneumatic Actuator,' ASME J. of DSMC, Vol. 117, pp. 88-92, 1995
  6. Rachkov, M. Yu., Crisostomo, M., Marques, L. and A. T. de Almeida, 'Position Control of Pneumatic Manipulators for Construction Tasks,' Automation in Construction 11, pp. 655-665, 2002 https://doi.org/10.1016/S0926-5805(02)00007-9
  7. Robert B. van Varseveld and Gary M. Bone 'Accurate Position Control of a Pneumatic Actuator Using On/Off Solenoid Valves,' IEEE/ASME Transactions on Mechatronics, Vol. 2, No. 3, 1997 https://doi.org/10.1109/3516.622972
  8. Tore Haegglund, 'A Friction Compensation for Pneumatic Control Valves,' Journal of Process Control 12, pp. 897-904, 2002 https://doi.org/10.1016/S0959-1524(02)00015-X
  9. Matsui, T., Ishimoto, E. and Takawaki, M., 'Learning Position Control of a Pneumatic Cylinder using Fuzzy Reasoning,' J. Fluid Control, Vol. 20, No.3, pp. 7-29, Mar. 1990
  10. Limmett, J. A. and Smith, M. C., 'An Accurate Low-Friction Pneumatic Position Control System,' Proc. Inst. Mech. Eng. B, Vol. 203, No. 33, pp. 159-165, Apr. 1989
  11. Paul, A. K., Mishra, J. K. and Radke, M. G., 'Reduced Order Sliding Mode Control for Pneumatic Actuator,' IEEE Trans. Contr. Syst. Technol., Vol. 2, pp. 271-276, Sept. 1994 https://doi.org/10.1109/87.317984
  12. Noritsugu, T., 'Development of PWM Mode Electro-Pneumatic Servo Mechanism, Part II: Position Control of a Pneumatic Cylinder,' J. Fluid Control, Vol. 17, No. 2,pp. 7-28, Mar. 1987
  13. Peirong, W, Yunbo, D.and Jianhua, H., 'The Story of a Pneumatic PWM Position Control System,' ICFP'93, Hangzhou, China, pp. 499-504, Sept. 1993
  14. Hwang, W. T., Choi, S. H., Lee, C. O., 'Study on the Effective Operating Method of On-Off Valves for a Pneumatic Servo System,' J. of the KSPE, Vol. 15, No.1, pp. 109-116, 1998
  15. Choi, S. H., 'A Study on the Position Control and Simulation of Pneumatic Servo System,' KAIST M.S. Thesis, 1995
  16. Weston, R. R., Moore, P. R., Thatcher, T. W., 'Computer Controlled Pneumatic Servo Drives,' Proc. Inst. Mech. Engrs., Vol. 198B, No. 14, pp. 225-231,1984
  17. Klein, A., Einsatz der Fuzzy Logik zur Adaption der Positionsregelung Fluidtechnischer Zylinderantriebe, Dissertation, RWTH Aachen, 1993
  18. Kohonen, T., Self-Organization and Associative Memory, 2nd Edition, Springer-Verlag, Berlin, 1987