A Generalized Acceleration and Deceleration Approach for Continuous Small Line Blocks with Look-ahead
A Generalized Acceleration and Deceleration Approach for Continuous Small Line Blocks with Look-ahead作者机构：National Technical Research Center-Numerical Control SystemSchool of Mechanical Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Machinery and Automobile EngineeringHefei University of TechnologyHefei 234009China
出 版 物：《武汉理工大学学报》 (Journal of Wuhan University of Technology)
年 卷 期：2006年第28卷第S3期
页 面：1052-1058页
学科分类：081203[工学-计算机应用技术] 08[工学] 0835[工学-软件工程] 0812[工学-计算机科学与技术（可授工学、理学学位）]
主 题：acceleration and deceleration numerical control back tracking look-ahead interpolation
摘 要：Generally complex 3D contours are divided into a lot of continuous small line blocks by CAD/CAM software. When these small line blocks are used in conventional way,machine tool has to stop at the end of one move before continuing on to the next to meet accuracy requirement,which results in ***-ahead is an intelligent function that aims at adjusting the feed rate automatically to achieve maximum productivity while maintaining *** now most researchers just utilize the simplest linear acceleration(ACC)and deceleration(DEC)to deal with look-ahead intelligence.A generalized ACC/DEC ap- proach and corresponding optimal look-ahead algorithm based on dynamic back tracking along a doubly linked list are *** improved rounding strategy for reducing interpolation errors is also *** using the proposed techniques,arbitrary velocity profiles that offer look-ahead feature and have the desired ACC/DEC characteristics for movement of a lot of continuous line blocks can be generated *** simulations and experiments showed the productivity was dramatically increased without sacri- fice of accuracy.
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