国外文献 > 1.轴承 > 2. 轴承类型与部件 > 磁悬浮轴承
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| 标 题： |
A Comparative Study on Fault Detection and Correction Techniques on Active Magnetic Bearing Systems
主动磁悬浮系统中故障检测与校正技术的比较研究 |
| 作 者： |
Rupert Gouws
George van Schoor |
| 关键词： |
Active magnetic bearing [主动磁悬浮轴承]
Control [ 控制]
On-line fault diagnosis and correction [ 在线故障诊断与修复]
Vibration monitoring [ 振动监测] |
| 出版年： |
2007 |
| 会议名： |
2007 Africon (AFRICON 2007), vol.1
2007年非洲国际会议（AFRICON 2007），第一卷 |
| 届 次： |
|
| 摘 要： |
In this paper, the authors distinguish between three real-time fault detection, correction and identification schemes for vibration forces on the rotor of a rotational active magnetic bearing (AMB) system. Historical fault data obtained from a fully suspended 250kW water cooling AMB pump was used in the design process of the three schemes. The real-time schemes perform three main tasks: 1) fault detection, 2) fault diagnosis and error correction and 3) fault identification. Displacement and current masking were performed during the fault detection stage and the vibratory amplitudes and frequencies were extracted by means of the Wigner-Ville distribution. Pattern recognition techniques, statistical diagnosis and fuzzy logic were used to calculate fault features during the fault diagnosis and error correction stages. During the fault identification stage, data fitting, fuzzy logic and ISO standards were used to calculate the type, parameters, vibratory level and zone of the vibration force. A comparison between the experimental results obtained from a double radial AMB test rack was performed to demonstrate the effectiveness of the proposed schemes in the real-time detection, correction and identification of vibration forces on the rotor of a rotational AMB system. The three real-time schemes were able to correct and minimize vibration forces to a stable working condition.
本文针对旋转式主动磁悬浮轴承（AMB）系统转子上的振动力，提出了三种实时故障检测、诊断与识别方案。在设计过程中，利用从一台完全悬挂的250kW水冷AMB泵中获取的历史故障数据。三种实时方案主要完成三项任务：1）故障检测； 2）故障诊断与错误校正； 3）故障识别。在故障检测阶段，采用位移和电流掩蔽技术，并通过维格纳- Ville分布提取振动幅值和频率。在故障诊断与错误校正阶段，运用模式识别技术、统计诊断方法和模糊逻辑来计算故障特征。在故障识别阶段，则采用数据拟合、模糊逻辑及ISO标准，确定振动力的类型、参数、振动水平和区域。通过对比双径向AMB测试台获得的实验结果，展示了所提出方案在旋转式AMB系统转子振动力实时检测、校正和识别方面的有效性。三种实时方案均能有效校正并最小化振动力，使其达到稳定工作状态。 |
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