S-Curve Algorithm Based on SCM

Abstract:

Control of the process of ACC/DEC (Acceleration/Deceleration) is one of most complicated problems in CNC system development. With the increase of acceleration and velocity in high-speed, high-precision CNC system, discontinuousness of acceleration will result in vibration, impact and debasing of position accuracy. The excellent ACC/ DEC control can solve these problems and improve the positioning precision. In this paper, S curve ACC/DEC algorithm is deeply studied, through comparison with other algorithms; its proved to be an efficient way in advanced CNC system. Usually, such kind of algorithm requires high-speed processor. However realization based on SCM (Single Chip Machine) is proposed in this paper. Through simulation, the result shows that the algorithm works well. Finally practical tests are carried out in Panasonic Minas A5 servo motor which indicates the control system is effective and accuracy.

• Periodical: Applied Mechanics and Materials (Volumes 416-417)
• Pages: 626-630
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.416-417.626
• Online since: September 2013
• Authors: Chao Wu, Yun Wang Ge, Gang Zhang, Ting Bu
• Keywords: Acceleration, Deceleration Control, S Curve Algorithm, SCM Realization

References

[1] T. Zou, Y. Y, Wu, H. J (2006) Multi-microprocessor-based robust control of an AC induction servo motor. In: IEEE Trans Ind 26(13): 643-648.

[2] Bin, W., Zhe, L (1994) Preshaped input commands applied to minimizing the vibration of a multiple-modes system. J. Journal of Beijing Polytechnic University 20(3): 97-102.

[3] Huang, J., Song, L. R (2005) Research on position control of CNC servo system. J. Electric Drive 12(5): 35-37.

[4] Juang, J.C., Jia, J. S (2000) on adaptive speed design in optical disc servo systems. In: IEEE Transactions on Control Systems Technology 6(13): 971-978.

DOI: 10.1109/87.880602

[5] Jeon, J. W (2000) efficient acceleration and deceleration technique for short distance movement industrial robots and CNC machine tools. Electronics letters 36(8): 766-768.

DOI: 10.1049/el:20000559

[6] Kaan, E., Yusuf A (2001) High speed CNC system design. Part I: jerk limited trajectory generation and quintic spline interpolation. Machine Tools & Manufacture 41(13): 1323-1345.

DOI: 10.1016/s0890-6955(01)00002-5

[7] Yeh, S., Hsu, P. L (2002) Adaptive-feedrate interpolation for parametric curves with a confined chord error. J. Computer-Aided Design 34(3): 229-237.

DOI: 10.1016/s0010-4485(01)00082-3

[8] Zhao, W., Wang, T. Y (2006) Acceleration-deceleration control method based on NURBS curve. J. China Mechanical Engineering 17(1): 1-3.

[9] Mi, C.T., Ming, Y. C (2005) IEEE international conference on Mechanistics 382(7): 652-659.

[10] Y. Tao (2009) Motor Company, Panasonic Corporation: Operation Instructions of AC Servo Motor & Driver Minas A5-series 6(2): 872-879.