基于Zynq的步进电机控制系统  

Stepping motor control system based on Zynq

作　　者：侯俊杰 赵宇 李孟委 Hou Junjie;Zhao Yu;Li Mengwei(School of Instruments and Electronics,North University of China,Taiyuan 030051,China;Nantong Institute of Intelligent Opto-Mechatronics,North University of China,Nantong 226000,China)

机构地区：[1]中北大学仪器与电子学院,太原030051 [2]中北大学南通智能光机电研究院,南通226000

出　　处：《国外电子测量技术》2021年第3期108-112,共5页Foreign Electronic Measurement Technology

摘　　要：为解决步进电机高速度与高精度的矛盾,以集成了ARM处理器和可现场编程的FPGA单元的xc7z020clg400-2芯片作为核心处理器,57BYG250B步进电机作为驱动对象,介绍了一种基于片上可编程系统(SOPC)的步进电机控制系统。该设计于Zynq内部的PS端(ARM)加入梯形加减速算法控制PL端(FPGA)产生频率可变的脉冲控制信号驱动电机进行转动,PS端接受编码器返回的角度值信息以实现步进电机的闭环控制,并于LCD液晶屏上实时显示电机旋转角度、速度等信息。最后通过实验测量步进电机在高速旋转时的实际旋转角度,得出其在旋转速度为5r/s,给出控制命令360°时的实际旋转为359.92°,控制精度可以达到99.98%。该设计具有集成度高、性能强、高速运行时精度高的优点。In order to solve the contradiction between high speed and high precision of stepping motor,this paper introduces a kind of stepper motor control system based on SOPC,the xc7 z020 clg400-2 chip integrates ARM processor and field programmable FPGA unit,which is used as the core processor and 57 BYG250 Bstepping motor as the driving object.A stepping motor control system based on SOPC is introduced.In this design,a trapezoidal acceleration and deceleration algorithm is added to the PS terminal(ARM)to control the PL terminal(FPGA)to generates pulse control signal with variable frequency to drive the motor to rotate.The PS terminal(ARM)receives the angle value information returned by encoder to realize the closed-loop control of the stepping motor.The rotation angle and speed of the motor are displayed on the LCD screen in real time.Finally,the actual rotation angle of the stepper motor during high-speed rotation is measured by experiments.When the rotation speed is 5 r/s,the actual rotation is 359.92°when the control command is 360°,and the control accuracy can reach 99.98%.The design has the advantages of high integration,strong performance and high precision when running at high speed.

关 键 词：步进电机 Zynq 梯形加减速 细分驱动 反馈控制 

分 类 号：TM383.6[电气工程—电机]