基于转速估计的直流电机双闭环控制  

Double Closed-loop Control of DC Motors Based on Speed Estimation

作　　者：陈许 符影杰[1] 

机构地区：[1]东南大学自动化学院,江苏南京210096

出　　处：《工业控制计算机》2025年第1期39-41,共3页Industrial Control Computer

摘　　要：转速、电流双闭环控制是可以使直流调速系统同时实现优良的静态、动态性能的控制方案,其中转速反馈的获取一般需要依赖于速度传感器。在冷轧管机主电机所处的实际工业场景中,各种现实条件并不允许安装速度传感器,转而使用电枢电压反馈作为控制外环,这样的方式对转速控制效果并不理想。由直流电机数学模型得出根据电枢电压、电流进行转速估算的公式,基于冷轧管机主电机实际工况特征提出了公式中参数初始测定方式,并设计出参数定期更新计算方式,以此应对电机运行过程中参数漂移而导致转速估算误差增大的情况。最后,在MATLAB/SIMULINK平台上搭建了模拟实际工况的冷轧管机主电机控制模型,验证了使用估算转速、电流双闭环的控制方案对比电枢电压反馈控制方案的控制效果提升。This paper derives a speed estimation formula composed of armature voltage and current,through the mathematical model of a DC motor.According to the characteristics of the production process of cold-rolled machine,methods for measurement and calculation of initial parameters in the formula are proposed,as well as the regularly re-calculation method for updating parameters,through the way of which,the increasement of speed estimation error caused by parameter drift during motor operation can be reduced.Finally,a control model for the main motor of cold-rolled machine is built on the MATLAB/SIMULINK platform,on which the improvement of control effect is verified through the contrast of the estimated speed and current dual closed-loop control scheme and the armature voltage feedback control scheme.

关 键 词：冷轧管机 直流电机 双闭环控制 转速估计 MATLAB 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]