基于ARM的伺服转台控制系统设计

Servo Turntable Control System Design Based on ARM

为了提高伺服转台控制系统位置精度要求。该控制系统以ARM(LPC2124)为控制核心,旋转变压器作为转台位移检测部件,采用了双闭环控制结构(速度环和位置环),以模拟量实现速度环、数字量实现位置环。硬件由电源电路,RS232通信,电机驱动器,伺服系统等组成。通过比较实测位置和理论位置得到位置误差,不断调整专家PID的参数。实验结果表明:该转台位置伺服精度在-0.8"~1.2"范围内,系统运动稳定可靠,满足伺服转台控制系统的精度要求。

In order to improve the system position accuracy servo turntable control system, control system is designed. The control system, with ARM （LPC2124） as the control core, rotating transformer as turntable displacement detection components, adopts the double closed-loop control structure （speed loop and position loop）, and speed loop is realized with analog, digital quantity to realize the position loop. Hardware is composed of the power supply circuit, RS232 communication, motor drive, servo system, etc. Position error can be obtained through comparing the measured position and theoretical position, adjusting the expert PID parameters. The experimental results show that the precision of position servo is within -0.8″- 1.2″, and the motion is stability, so the system provides accurate positioning servo turntable control.