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在介绍了基于UMAC搭建开放式数控系统的开发设计过程,阐述了数控系统具体的硬件和软件组成结构;系统采用PID+速度/加速度前馈的控制算法对X、Z轴直线电机伺服环进行了设置和调试,调试出了良好的动态性能。在大型非球面超精密车床的应用和实际加工试验表明:该数控系统功能完善,运行可靠,低速平稳性好,动态跟踪误差小,控制精度高,能够实现纳米级的系统分辨率和定位精度,满足设计要求。
Introduced the development and design process of open CNC system based on UMAC, and elaborated the concrete hardware and software structure of NC system. The system adopted PID + speed / acceleration feedforward control algorithm to set the servo loop of X, Z axis linear motor And debugging, debugging a good dynamic performance. The application of large aspheric ultra-precision lathes and the actual machining tests show that the numerical control system has the advantages of complete functions, reliable operation, good stability at low speed, small dynamic tracking error and high control precision, which can realize nanometer-scale system resolution and positioning accuracy, Meet the design requirements.