Dynamic adaptive speed look-ahead control method of continuous small line segment trajectories

Abstract

The invention discloses a dynamic adaptive speed look-ahead control method of continuous small line segment trajectories. The method comprises the steps that S1 the maximum speed of connecting points is calculated and the speed look-ahead number of segments is determined; S2 entering a deceleration area or not is judged, and the process jumps to the step S3 if the judgment result is no; S3 initial speed and end speed are compared; and the process jumps to the step S4 if the initial speed is greater than the end speed; S4 whether the deceleration distance constraint condition is met is judged; and the process jumps to the step S7 if the judgment result is yes, or the process jumps to the step S5; S5 whether the deceleration distance in which the initial speed reduces to the end speed is less than the current line segment displacement length is judged, and the process jumps to the step S7 if the judgment result is yes, or the process jumps to the step S6; S6 the maximum initial speed of the current segment displacement length constraint is searched and cycling is performed until tracing back to the look-ahead start point; S7 the non-look-ahead path is updated and whether the segment of the current line segment is less than the look-ahead number of segments is judged, and the process jumps to the step S2 if the judgment result is yes, or the process jumps to the step S8; and S8 speed look-ahead control is ended. High-speed connection of transition speed between the continuous trajectories can be effectively realized so that the processing time can be greatly shortened and the processing efficiency can be enhanced.

Description

technical field [0001] The invention relates to the technical field of numerical control, in particular to a dynamic adaptive speed forward control method suitable for continuous small line segment trajectories. Background technique [0002] With the rapid development of modern industry, the competition for the development of advanced manufacturing technology commonly used in automotive, aerospace and various industries is becoming more and more intense. This not only requires the improvement of product quality, but also requires higher and higher production speed. High-speed and high-precision production has become an important goal pursued by modern manufacturing companies. In order to process special parts with complex curves and surfaces, such as molds, automobiles and aerospace parts, etc., CAD / CAM software often approximates the contour of the machining track through a large number of small line segment trajectories to achieve machining. If these discrete and discont...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a dynamic adaptive speed forward control method for continuous small line segment trajectories, which effectively solves the technical problem that the existing speed forward control and interpolation technology causes discontinuous speed curves at transition points

Images