基于FPGA的步进电机伺服控制系统研究  

Research on Servo Control System of Stepper Motor Based on FPGA

作　　者：孙磊[1] 张得礼[1] SUN Lei;ZHANG Deli(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016

出　　处：《机械与电子》2018年第3期40-44,48,共6页Machinery & Electronics

摘　　要：针对目前步进电机控制中存在的步距角大、低频震荡以及控制精度不高的问题,采用现场可编程逻辑门阵列(FPGA)作为主控芯片,实现对1台两相混合式步进电机的电流和速度双闭环控制。利用FPGA本身运算速度快、实时性好和编程灵活的优点,通过数字比较器同步产生多路PWM控制信号,以此来减小步进电机步距角,提高伺服系统的性能和电机运行的平稳性。最终测试结果表明,该闭环驱动技术有助于解决步进电机控制中的相关问题,具有良好的实用价值。In order to solve the problems of large step angle,low frequency oscillation and low control accuracy in stepper motor control,this research used field-programmable gate array(FPGA)as the master chip to achieve double closed-loop control on the current and speed of a two-phase hybrid stepping motor.By taking advantage of fast operation,good real-time performance and flexible programming of FPGA,multiple PWM control signals were generated synchronously via the digital comparator to reduce the step angle of the stepper motor as well as improve the performance of the servo system and the stable operation of the motor.The final test results show that the closed-loop drive technology helps to solve the related problems in the stepper motor control,and has good practical value.

关 键 词：现场可编程逻辑门阵列 矢量控制 微步控制 PWM 步进电机 

分 类 号：TM383[电气工程—电机]