一种直流电机系统的稳定裕度估计方法  

An Estimation Method for Stability Margin of DC Motor System

作　　者：刘天宇 罗浩 王雪娇 尹珅[1] LIU Tian-yu;LUO Hao;WANG Xue-jiao;YIN Shen(School of Astronautics,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学航天学院,黑龙江哈尔滨150001

出　　处：《控制工程》2021年第3期495-500,共6页Control Engineering of China

摘　　要：随着工业设备自动化程度和复杂度的不断提高,系统稳定性和鲁棒性成为日益关键的指标。而稳定裕度便是衡量系统稳定程度的一个指标,并且在控制系统设计中起着重要的作用。因此,一种数据驱动的稳定裕度估计方法被提出,并且以直流电机系统为例进行了应用。利用电机输入输出测量数据和原本的控制器信息,通过子空间投影,估计出了系统的稳定裕度,并比较了在常见的电机故障中,对控制系统稳定裕度变化量的估计。仿真结果显示此方法在系统参数发生变化时较好地估计出了相应的稳定裕度。With the improvement of automation and complexity of industrial equipment, system stability and robustness become increasingly important indicators. The stability margin is a measure of the stability of the system, and plays an important role in the design of the control system. Thus, a data-driven estimation method is proposed to estimate the stability margin and it is applied in the DC motor system. Using the input and output data of the motor and the original controller information, the stability margin of the system is estimated by subspace projection, and the estimation of the stability margin changes in control system with the common motor fault is compared. The simulation results show that this method can estimate the corresponding stability margin well when the system parameters change.

关 键 词：直流电机 稳定裕度 数据驱动 子空间方法 

分 类 号：TP206.3[自动化与计算机技术—检测技术与自动化装置]