摘要
开关磁阻电机位置信号出现故障后,导致相应相不能正常励磁,电机输出转矩降低。通过对开关磁阻电机位置故障信号的分析,提出一种可统一诊断位置信号故障的方法,即通过检测各相位置信号双边沿的触发顺序以及相邻触发边沿之间的角度差来实现故障检测,并利用位置传感器信号之间的位置角度关系实现故障后的容错控制。当故障位置信号恢复正常时,利用故障诊断方法排除错误触发沿,使位置传感器平稳切入,重新恢复工作。最后通过故障模拟实验,验证了位置传感器信号故障检测、容错控制及恢复切入策略的正确性和可行性。
The phase of switched reluctance motor （SRM） can＇t be excited normally and output torque of the motor decreases when the position signal is in fault. Through the analysis of the fault signals, a diagnostic method that detected the edge sequences of position signals and calculated the angle between the adjacent edges of position signals was researched. Fault-tolerant control was carried out by taking advantage of the angle relations of position signals. When the fault position signals recovered, the wrong edges were detected and rejected by using this diagnostic method to make the position sensor recover steadily. The validity and feasibility of fault diagnosis, fault-tolerant control and fault recovery is verified by simulated fault experiments on SRM.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2011年第33期123-130,共8页
Proceedings of the CSEE
基金
国家自然科学基金项目(50877036)~~
关键词
开关磁阻电机
位置信号
故障诊断
容错控制
故障恢复
switched reluctance motor （SRM）
positionsignal
fault diagnosis
fault-tolerant control
fault recovery
