基于Δcos(ϕ)/ΔI因子的步进电机驱动电流优化控制研究  

Research on optimal control of driving current of stepping motor based on the factor ofΔcos(ϕ)ΔI

作　　者：刘兆春[1] 胡昆 Liu Zhaochun;Hu Kun(Jianghuai College of Anhui University,Hefei 230031,China;School of Automation,Northwestern Polytechnical University,Xi′an 710072,China)

机构地区：[1]安徽大学江淮学院,安徽合肥230031 [2]西北工业大学自动化学院,陕西西安710072

出　　处：《电子技术应用》2023年第5期88-93,共6页Application of Electronic Technique

基　　金：2021年安徽省高校自然科学研究重点项目(KJ2021A0986);2021年合肥学院研究生质量工程项目(2021Yjyxm06);合肥学院人才基金(20RC10);2020年安徽大学江淮学院院级科研项目(2020KJ0001)。

摘　　要：脉冲步进指令控制的传统步进电机具有开环定位的特点,无需位置传感器。而开环控制的缺点在于当发生过载时容易导致失步,为了降低失步发生的概率,步进电机通常以最大电流工作,这会影响其工作效率。针对上述问题,提出了一种基于Δcos(ϕ)/ΔI因子的优化步进电机驱动电流的控制算法,该算法结合步进电机的特性及其步进指令脉冲,适用性强,计算过程简单,无需额外设置步进电机的机械或电气参数。利用混合式步进电机的实测数据进行了数据仿真实验,证明了所提出算法的有效性。The traditional stepper motor controlled by pulse command has the characteristics of open-loop positioning without any position sensor.The disadvantage of open-loop control is that it is easy to lead to out of step when overload occurs.In order to reduce the probability of out of step,the stepper motor usually works with the maximum current,which will affect its working efficiency.To solve the above problems,a control algorithm based on the factor ofΔcos(ϕ)ΔI to optimize the driving current of the stepper motor has been proposed in this paper.The algorithm combines the characteristics of stepper motor and its pulse command,has strong applicability and simple calculation process,and doesn′t need to set additional mechanical or electrical parameters of the stepper motor.Using the measured data of hybrid stepper motor,data simulation experiments have been carried out to prove the effectiveness of the proposed algorithm.

关 键 词：步进电机 驱动电流 优化控制 

分 类 号：TP237.4[自动化与计算机技术—检测技术与自动化装置]