数控系统小线段平滑过渡算法的半硬件仿真与验证
Semi-hardware Simulation and Verification of a Small Line Smooth Transition Algorithm in Numerical Control System

为了满足数控系统中加工精度和速度的要求,提出了小线段平滑过渡算法。首先建立小线段平滑过渡的数学模型,并求取过渡圆弧参数和旋转方向;然后以加工平台的机械特性来限制其进给速度,采用半硬件仿真系统测试其运动轨迹,在误差允许的范围内,仿真轨迹与实验加工图形一致;最后搭建测试平台测试其运动速度,在保证加工精度和加工平台机械特性的情况下,该算法能够较大程度地提高加工效率。
In order to meet the requirements of speed and accuracy in numerical control system, this paper presents a small line smooth transition algorithm. Firstly, we establish the mathematical model of the small line smooth transition and get the parameters and rotation direction of transition circular arc. Then, with the feed speed limited by mechanical property of processing platform, the numerical track acquired though the semi-hardware simulation system is consistent with the machining graphics with the errors permitted. And the velocity of the algorithm tested by the test platform is improved obviously under the guarantee of machining accuracy and mechanical material properties