采用STM32单片机的无刷直流电机电流采样技术研究  

Current Sampling Technology of BLDCM Based on STM32

作　　者：颜天文 仓思雨 顾伟超 张兰红[1] YAN Tianwen;CANG Siyu;GU Weichao;ZHANG Lanhong(School of Electrical Engineering,Yancheng Institute of Technology,Yancheng Jiangsu 224051,China;School of Information Engineering,Yancheng Institute of Technology,Yancheng Jiangsu 224051,China;Jiangsu Youhe Power Machinery Co.,Ltd.,Yancheng Jiangsu 224000,China)

机构地区：[1]盐城工学院电气工程学院,江苏盐城224051 [2]盐城工学院信息工程学院,江苏盐城224051 [3]江苏友和动力机械有限公司,江苏盐城224000

出　　处：《盐城工学院学报（自然科学版）》2021年第3期17-21,共5页Journal of Yancheng Institute of Technology:Natural Science Edition

基　　金：江苏省政策引导类计划(国际科技合作)重点国别产业技术研发合作项目(BZ2018045);江苏省大学生创新创业训练计划项目(2019204);盐城工学院2021年校级优秀毕业设计培育项目(202106)。

摘　　要：在传统无刷直流电机电流采样技术中,功率管开、关导致的尖峰电流信号和分立元件温漂常会使采样结果产生误差。为解决这一问题,基于以STM32单片机为控制核心的无刷直流电机,提出了一种在PWM脉冲中点采样电流的方案。实验结果表明,这一方案不仅软硬件易于实现,而且还可以提高无刷直流电机电流采样的精度。In the traditional current sampling technology of Brushless DC motor,the peak current signal caused by power tube on and off and the temperature drift of discrete components often cause errors in the sampling results.In order to solve this problem,based on the brushless DC motor with STM32 single chip microcomputer as the control core,a scheme of sampling current at the midpoint of PWM pulse is proposed.The experimental results show that this scheme is not only easy to implement in software and hardware,but also can improve the current sampling accuracy of Brushless DC motor.

关 键 词：无刷直流电机 电流采样 PWM 

分 类 号：TK513[动力工程及工程热物理—热能工程]