基于STM32F4的时栅数控分度转台控制系统设计

Design of Control System for High Precision Time Grating NC Rotary Table Based on STM32F4

为了提高时栅位移传感器数控转台的控制定位精度,针对步进电机载物运动时的高频出力不足、低频振动、失步、堵转等现象,提出了一种基于STM32F4的数控分度转台控制系统。系统通过对硬件、软件的设计建立了以STM32F4微处理器为控制核心、时栅角位移传感器为反馈元件的全闭环控制系统,有效的解决了步进电机的精确控制问题。经实验验证,实现了高稳定性、高速度、高精度的时栅数控转台定位,定位精度达到了±2″。

In order to improve the grating displacement transducer control positioning precision of the NC （Numerical Contiiol）rotary table and the situation about slide motion of the stepper motor＇s high frequency output low frequency vibration, out of step and locked-rotor wait for a phenomenon, a NC indexing turntable control system has bean put forward based on STM32F4.This system based on the design of the hardware and software,using the STM32F4 microprocessor as the core and the grating angular displacement sensor as the feedback element to complete the whole closed loop control system and effectively solved the problem of the accurate control of stepping motor.Verified by the experiment, the system has realized the high stability,high speed,high precision grating NC turntable positioning,the position accuracy is only ±2″.