关键词: 微线段, 自适应前瞻, 嵌套规划, 动态调整, 插补

Abstract: In response to the problems that the traditional adaptive look-ahead planning algorithm needed to set the look-ahead first and last speed to fixed values during the calculation,and the transition articulation part could not be dynamically adjusted,an adaptive look-ahead nested planning algorithm with dynamically adjusted transition part was proposed.With the given error as the constraint,a circular arc transition model at the corner was established.Based on the linear acceleration and deceleration model,the optimal angle between adaptive look-ahead segmentation and nested articulation was set as the adaptive look-ahead segmentation angle,and the end velocity of adaptive look-ahead was restricted to achieve nested planning.Dynamic adjustment was introduced into the look-ahead planning to dynamically adjust the transition arc radius to achieve the global optimum.The experiments showed that the path could be planned effectively by the dynamic adaptive look-ahead nesting planning algorithm,which improved the maximum allowable speed of the path,the average contour accuracy,and reduces the machining elapsed time at the same time.

Key words: micro-line segment, adaptive look-ahead, nested planning, dynamic adjustment, interpolation