基于驱动电路3955的步进电机细分驱动器设计  

Design of Subdivided Driver of Two-Phase Step Motor Based on Driver Circuit 3955

作　　者：董圣英[1,2] 刘建亭[3] 霍孟友[4] 

机构地区：[1]山东大学控制科学与工程学院,山东济南250061 [2]德州职业技术学院电气电子工程系,山东德州253034 [3]济南大学科技处,山东济南250022 [4]山东大学机械工程学院,山东济南250061

出　　处：《济南大学学报（自然科学版）》2010年第4期398-401,共4页Journal of University of Jinan(Science and Technology)

基　　金：国家863计划(2009AA044204)

摘　　要：为减小步距角,提高电机步进分辨率,在分析步进电机细分原理的基础上,提出一种基于全桥PWM驱动电路3955的两相步进电机细分驱动器设计方案,给出了系统的硬件结构和软件设计。该方案采用正弦/余弦细分方法,控制步进电机两相绕组的电流,实现了斩波恒流均匀细分驱动,最高细分达到128。所设计的驱动器已应用于数控车床改造中,采用导程为1 mm的精密滚珠丝杆,可实现每步位移0.4μm。实验结果表明该步进电机细分驱动器运行平稳、可靠性高,具有良好的运行矩频特性。Based on the analysis of the subdivision principle of step motors,an approach of micro step driver based on the full-bridge PWM integrated circuit 3955 for two-phase step motors are proposed to reduce the step angles and improve the step resolution of step motors,and the hardware structure and software design of the system are also represented.By using sin/cos micro step method and adjusting the current in each winding of step motors,chopping constant-current and homogeneous micro step drive can be achieved with the highest resolution up to 128.When chosing the precise ball screw with 1mm lead,the numerical control lathe using this driver is demonstrated that the precision of single step displacement is 0.4μm.Experimental results confirm that the micro step driver has high reliability,high performance and good torque/frequency characteristic.

关 键 词：步进电机 驱动器 细分控制 

分 类 号：TM383.6[电气工程—电机]