| 张宏伟,王新环,荆鹏辉.绕组分段永磁直线电机切换位置传感器故障诊断及容错控制[J].电子测量与仪器学报,2017,31(11):1745-1752 |
| 绕组分段永磁直线电机切换位置传感器故障诊断及容错控制 |
| Fault diagnosis and fault tolerant control of switching position sensor for segment winding permanent magnet linear synchronous motor |
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| DOI：10.13382/j.jemi.2017.11.008 |
| 中文关键词: 绕组分段永磁直线同步电机 电感式位置传感器 故障诊断 容错控制 |
| 英文关键词:segment winding permanent magnet linear synchronous motor inductance proximity sensor fault diagnosis fault tolerant control |
| 基金项目:河南省自然科学基金（162300410349）、河南省高校控制工程重点学科开放课题（KG2014 05）、河南理工大学青年骨干教师资助计划（201310460023）、基本科研业务费（NSFRF140118）资助项目 |
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| 中文摘要: |
| 绕组分段永磁直线同步电机绕组切换过程中位置传感器信号的丢失，将导致电机速度剧烈波动，引起电机失步。针对以上问题，提出一种切换位置传感器故障诊断及容错控制方法。设计了绕组切换位置检测方法，研究了位置接近开关传感器的故障类型及信号特征，利用动子的运行速度及相邻的位置传感器信号进行传感器状态预测，并结合相邻传感器的边沿触发顺序及传感器状态预测值进行故障诊断。当检测到位置传感器故障时，隔离发生故障的传感器，采用估计值替代故障传感器输出驱动信号，可靠切换绕组分段永磁直线同步电机定子绕组，实现传感器容错控制。利用绕组分段永磁直线电机无绳提升系统进行了实验研究，研究结果表明，当增大传感器间隙，模拟传感器信号丢失故障时，电机定子绕组仍能可靠切换，电机速度运行平稳，该位置传感器故障诊断与容错控制方法可以满足绕组分段永磁直线电机切换控制实时性和可靠性要求，实验结果证明了其可行性和有效性。 |
| 英文摘要: |
| During the movement of segment winding permanent magnet linear synchronous motor (SW PMLSM), the loss of sensor signal may lead to sharp fluctuations in speed, and result in out of step. In order to solve these problems, a fault diagnosis and fault tolerant control method is presented. The detection method of winding switching position is designed. The fault types and signal characteristics of the proximity sensors are studied. By using the speed of mover and the signals of the adjacent position sensors, the sensor state is predicted. The fault diagnosis of sensor is realized by using the edge triggering sequence of adjacent sensors and the predictive value of sensor state. When the position sensor fault is detected, the control system isolates the fault sensor. The stator winding of the SW PMLSM is successfully triggered by the estimated value instead of the fault sensor signal. The experimental tests have been carried out on a prototype of SW PMLSM rope less lifting system. The results show that when the sensor gap is increased, the sensor signal is lost, the stator windings of the motor can be switched reliably and the speed is stable. The position sensor fault diagnosis and fault tolerant control method can satisfy the real time and reliability requirements of SW PMLSM winding switching control, and the experimental results prove its feasibility and effectiveness. |
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