On acceleration/deceleration before interpolation for CNC motion control
On acceleration/deceleration before interpolation for CNC motion control
复制标题
CNC运动控制插补前加减速
DOI：
10.1109/icmech.2005.1529287
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
N. Tsai
中科院分区：
文献类型：
--
作者：
M. Tsai;Ming Cheng;Kung;N. Tsai
为了防止数控机床运动控制中的路径指令错误，需要对所需的进给速度曲线进行“插补前加减速”（ADBI）运动规划。虽然有一些现有的算法可用于实现ADBI，有没有明确的选择，在轮廓误差和加工效率。本文提出了一种综合考虑轮廓误差和加工效率的混合方法。此外，基于“多块向前看”的思想，本文还探讨了ADBI与NURBS（非均匀有理B样条）插值的结合问题。一个轮廓，由四块NURBS曲线是用来比较三种不同的多块前瞻性的方法：传统的，直接数字卷积，和建议的混合方法的性能。实验结果表明，该方法具有上级性能优于其他两种方法。
To prevent from path command errors in CNC's motion control, performing "acceleration/deceleration before interpolation" (ADBI) motion planning on the desired feed rate profile is necessary. Although there are a few existing algorithms available for implementing ADBI, there is no clear choice in terms of contour error and machining efficiency. In this paper, a hybrid approach that takes both the contour error and the machining efficiency into account is proposed. In addition, based on the idea of "multi-blocks look ahead", this study also explores the problem of combining ADBI with NURBS (non-uniform rational B-spline) interpolation. A contour that consists of four blocks of NURBS curves is used to compare the performances of three different multi-blocks look ahead approaches: conventional, direct digital convolution, and the proposed hybrid approach. Experimental results show that the proposed hybrid approach exhibits superior performances compared with the other two approaches.