A look-ahead algorithm with adjustable real-time feedrate based on multi-axis synchronous interpolation

被引：0
作者：
Shi, Zhongquan [1 ,2 ,3 ]
Ye, Wenhua [1 ,2 ]
机构：
[1] College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics
[2] Jiangsu Province Key Laboratory of Precision and Micro-manufacturing Technology
[3] College of Mechanical and Electrical Engineering, Hehai University
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2014年 / 35卷 / 02期
关键词：
Acceleration/deceleration control; Linear Interpolation; Look-ahead algorithm; Numerical control system; Speed control;
D O I：
10.7527/S1000-6893.2013.0386
中图分类号：
学科分类号：
摘要：
Generally a multi-axis motion algorithm based on S-shaped acceleration and deceleration is complicated, and its maximum feedrate in one interpolation line cannot be real-time adjusted. To solve these problems, a look-ahead algorithm with adjustable real-time feedrate is proposed, in which the connected speed is established according to the dynamic characteristics of a CNC machine tool and the angle between two interpolation lines. And an S-shaped acceleration and deceleration speed control method with acceleration following theory is presented. The proposed algorithm does not reduce the path interpolation precision with maximum connected speed between two lines, so that the entire line interpolation process is highly flexible and rapid, and can satisfy a modern CNC system's requirements for real-time look-ahead processing. Experimental results show that the proposed algorithm can effectively reduce the vibration of machine tool motion, improve processing efficiency and the surface quality of machined workpieces.
引用
收藏
页码：582 / 592
页数：10
相关论文
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