通用型前瞻速度规划算法  

Generalized look-ahead feedrate planning algorithm

作　　者：董靖川[1,2] 王太勇[1,2] 王自静 李勃[1,2] 丁彦玉[1,2] 蒋永翔[4] 

机构地区：[1]天津大学机械工程学院,天津300072 [2]天津大学机构理论与装备设计教育部重点实验室,天津300072 [3]天大精益数控技术有限公司,天津300192 [4]天津职业技术师范大学机械工程学院,天津300222

出　　处：《计算机集成制造系统》2013年第3期529-539,共11页Computer Integrated Manufacturing Systems

基　　金：国家自然科学基金资助项目(50975193);天津市科技计划资助项目(10ZXCXGX28700;11ZCKFGX03400);天津大学自主创新基金资助项目(60302046);天津市应用基础与前沿技术研究计划资助项目(12JCQNJC02500)~~

摘　　要：为优化进给速度曲线,节约加工时间并提高加工质量,提出一种通用的前瞻速度规划算法。该算法可以在满足进给速度约束条件的前提下,对加工路径进行预读,实现进给速度的前瞻规划处理。算法以规划元为单位对加工路径进行划分,通过对加减速算法的抽象和封装实现不同种类的前瞻速度规划,以及对进给速度控制功能算法的重构。仿真和实验表明,该算法在几种不同加减速方式下都可以正确重构,实现进给速度的实时前瞻规划,改善数控机床的加工效率和运动平稳性。The feedrate planning is a key function in Computerized Numerical Control （CNC） controller. In the high speed and high precision machining process, the look-ahead feedrate planning algorithm was essential for optimizing the feedrate curve, saving machining time and improving machining quality. Therefore, a generalized look-ahead fee- drate planning algorithm was proposed. On the premise of satisfying the constraints of feedrate, this algorithm could preread tool path and realize look-ahead feedrate planning. The planning units were used to divide the tool path, and different kinds of look-ahead feedrate planning were realized by abstracting and encapsulating the acceleration/decel- eration algorithm. Thus the reconfiguration for feedrate＇s control algorithm was realized. The simulation and experi- ment results showed that the proposed algorithm was correctly reconfigured with different acceleration/deceleration schemes. The real-time look-ahead planning for feedrate was realized, and the machining efficiency and motion smoothness of CNC was improved.

关 键 词：数控系统 进给速度 前瞻规划 重构 加减速 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]