摘要
针对环面蜗杆检测仪系统控制及定位精度的需要,采用Cortex-M4作为主控制器,控制步进电机驱动载物台运动,步进电机采用闭环控制。光栅尺实时检测XYZ导轨的位置信息,并把光栅信号作为反馈信号,构成闭环运动控制系统,实现坐标系中XYZ轴的运动和时栅转台旋转的高精度定位。步进电机的驱动采用软硬件细分方法,克服了步进电机爬行和丢步现象。实验表明:该系统采用全闭环控制、步进电机软硬件细分方法,实现了三坐标轴±2μm的精密定位,保证了环面蜗杆检测仪的准确测量。
In view of the torus worm tester system control and positioning accuracy,the Cortex- M4 as the main controller,the control stepper motor to drive the objective table movement,stepper motor adopts closed loop control. the grating ruler for real-time detection of XYZ guide information,the grating signal as the feedback signal,constitute a closed-loop motion control system,realize coordinate system XYZ axis movement and high precision positioning of the turntable rotation. Stepper motor driver uses hardware and software subdivision method,overcome the stepper motor step crawl and lost phenomenon. Experiments show that the system adopts the closed loop control,step motor subdivision method of software and hardware,and realizes the three axes of ± 2 μm precision positioning,to ensure the torus worm tester accurate measurement.
出处
《机床与液压》
北大核心
2015年第18期116-119,共4页
Machine Tool & Hydraulics
