异步电机电流传感器容错控制方法研究
Research of Current Sensor Fault Tolerant Control of Induction Motor
邢浪涛 1王换民2
作者信息
- 1. 陕西国防工业职业技术学院人工智能学院 西安 710300
- 2. 商洛学院电子信息与电气工程学院 商洛 726000
- 折叠
摘要
电流传感器受制造工艺和恶劣工作环境的影响,在异步电机矢量控制系统中可能失效,进而严重影响电机控制性能,甚至导致系统崩溃.为实现异步电机驱动系统的容错功能,研究了一种适用于异步电机的电流传感器故障后的容错控制策略.首先根据电流估计模块与电流传感器测量值的残差进行故障诊断并选择合适的电流反馈值.进而选取阈值为与负载相关q轴定子电流百分比,以消除负载变化对该方法的影响.最后通过仿真和实验分析,验证了在三相电流传感器全部发生故障的最不利条件下该容错控制方法的可行性.
Abstract
Affected by manufacturing processes and harsh working environments,the current sensor in asynchronous motor vector control system may fail,which can seriously affect motor control performance and even lead to system crashes.In order to achieve the fault-tolerant function of asynchronous motor drive systems,a fault-tolerant control(FTC)strategy for current sensor faults in asynchronous motors is studied in this paper.Firstly,fault diagnosis is carried out based on the residual error between the current observation module and the current sensor measurement.Furthermore,to eliminate the impact of load changes,the current threshold is selected as the percentage of q-axis stator current related to the load.Finally,through simulation and experimental anal-ysis,the feasibility of this FTC method is verified,even under the most unfavorable conditions where all three-phase current sen-sors fail.
关键词
电流传感器/故障诊断/电流估计模块/容错控制Key words
current sensor/fault diagnosis/current observation module/fault tolerant control引用本文复制引用
基金项目
陕西省教育厅一般专项科研计划项目(20JK0611)
商洛学院教育教学改革研究项目(22jyjx124)
出版年
2024
国家科技期刊平台
NSTL
万方数据