基于RTX的参数化插补算法的仿真研究

Simulation Research of Parametric Interpolation Algorithm Based on RTX

在数控机床高速加工过程中,常规采用的增量式递推算法采样插补技术由于后一步的计算都是建立在前一步结果的基础上,容易产生误差累积效应。为了解决这一问题,笔者提出了参数化插补算法,并建立了参数化插补轨迹模型,基于自动加减速控制原理,自主开发设计了Windows XP SP3+RTX实时扩展数控系统软件平台,通过平台进行仿真实验。结果表明提出的参数化插补算法能有效解决累积误差的问题,同时能够很好地减小弓高误差。

In the process of high speed machining of CNC machine tools, because the latter step was always based on the results of previous step during the sampling interpolation technique based on the conventional incremental algorithm, it was easy to cause cumulative error effect. In order to solve this problem, this paper proposed a parametric interpolation algorithm, established the parametric interpolation trajectory model, studied on automatic acceleration and deceleration control principle, independent designed Windows XP SP3 ＋ RTX as software platform for real time extended numerical control system, the simulation experiment was carried out on the platform, the results show that the proposed parametric interpolation algorithm can effectively solve the problem of cumulative error, and reduce the chord error at the same time.