A real-time look-ahead direct interpolation algorithm for small line

被引：0
|
作者：
Zhang Y. [1 ]
Zhao D. [1 ]
Liu K. [1 ]
Chen S. [1 ]
机构：
[1] College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics
来源：
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2010年 / 40卷 / 04期
关键词：
Real-time look-ahead; Small line; Uniform acceleration; Variable interpolation period;
D O I：
10.3969/j.issn.1001-0505.2010.04.012
中图分类号：
O24 [计算数学];
学科分类号：
070102 ;
摘要：
Combined with a uniformly accelerated DDA(digital differential analyzer) interpolation algorithm, variable period interpolation technology and real-time look-ahead technology, a new direct interpolation algorithm for small line is proposed. Rough interpolation is made up of two parts: velocity planning and real-time looking-ahead. A uniformly accelerated DDA interpolation algorithm is adopted in fine interpolation. The maximum allowable transition velocity is calculated, and the actual speed is then adujsted in accordance with look-ahead data. Finally the DDA interpolation algorithm is used to output pulse. Each small line is no longer split into smaller micro-lines, but interpolated by fine interpolation device. The results demonstrate that the algorithm has higher actual speed and no theoretical error.
引用
收藏
页码：726 / 730
页数：4
相关论文
共 12 条
  • [1] Han G.C., Kim D.I., Kim H.G., Et al., A high speed machining algorithm for CNC machine tools, Proceedings of the 25th IEEE International Conference on Industrial Electronics, Control, and Instrument, pp. 1493-1497, (1999)
  • [2] Jeon J.W., Efficient acceleration and deceleration technique for short distance movement in industrial robots and CNC machine tools, IEEE Electronics Letters, 36, 8, pp. 766-768, (2000)
  • [3] Cui J., Chu Z.Y., An improved approach for the acceleration and deceleration of industrial robots and CNC machine tools, Proceedings of IEEE International Conference on Industrial Technology, pp. 1269-1273, (2005)
  • [4] Yau H.T., Wang J.B., Development and implementation for real-time lookahead interpolator by using Bezier curve to fit CNC continuous short blocks, Proceedings of IEEE International Conference on Mechatronics, pp. 78-83, (2005)
  • [5] Luo F.Y., Zhou Y.F., Yin J., A universal velocity profile generation approach for high-speed machining of small line segments with look-ahead, Int J Adv Manuf Technol, 35, 5, pp. 505-518, (2007)
  • [6] Wang J.B., Yau H.T., Real-time NURBS interpolator: Application to short linear segments, Int J Adv Manuf Technol, 41, 11, pp. 1169-1185, (2009)
  • [7] Wang Y., Xiao L., Zeng S., Et al., An optimal federate model and solution for high-speed machining of small line blocks with look-ahead, Journal of Shanghai Jiaotong University, 38, 6, pp. 901-904, (2004)
  • [8] Ye P., Zhao S., Study on control algorithm for micro-line continuous interpolation, China Mechanical Engineering, 15, 15, pp. 1354-1356, (2004)
  • [9] Wu Y., Shang Y., Study on control algorithm for micro-line interpolation end-point, Modular Machine Tool and Automatic Manufacturing Technique, 2, pp. 1-2, (2006)
  • [10] Liang W., Wang Q., Pei H., An algorithm of segments linking with high flexibility in CNC machining, Machine Tool and Hydraulics, 36, 12, pp. 8-10, (2008)
12