理论分析和研究支持重建控制磁轴承的冗余结构的理论分析和研究
Huaqiang Sun1, Zhiqin Liang1, Baixin Cheng1
1School of Mechanical and Automotive Engineering, Liaocheng University, Liaocheng 252059, China.
Sensors (Basel, Switzerland)
|July 30, 2025
概括
这项研究表明,具有冗余结构的磁轴承如何在线圈故障后重建电磁力 (EMF). 电流分布矩阵 (CDM) 可实现容错控制,确保稳定的磁悬浮,即使有多达两次线圈故障.
科学领域:
- 工程 工程师 工程师 工程师
- 控制系统 控制系统
- 电磁主义 电磁主义
背景情况:
- 具有冗余结构的磁悬浮轴承对于故障耐受性至关重要,特别是在发生线圈故障时.
- 磁轴承中的线圈故障可能导致不对称的支结构和失去稳定的悬浮.
- 实现耐故障控制需要在故障后的各种支持条件下重建电磁力 (EMF).
研究的目的:
- 揭示具有冗余结构的磁轴承中的支重建机制.
- 为磁轴承开发一个耐故障的控制策略,以应对发生线圈故障的磁轴承.
- 通过模拟来验证拟议方法的有效性.
主要方法:
- 对偏移电流进行线性化分析,以定义电流分布矩阵 (CDM).
- 对八极磁轴承的非线性EMF模型的构建和线性化.
- 在不同的线圈故障场景下计算电流矩阵和磁流密度 (没有故障,单线圈故障,双线圈故障).
- 使用CDM和位置控制法开发一个耐故障控制系统.
主要成果:
- CDM有效地管理了在各种支持结构下为EMF重建的当前分配.
- 支重建成功实现,即使在八极磁轴承中最多发生两次线圈故障.
- 在重建过程中,模拟显示了最小的瞬间位移干扰 (<0.28μm),重建的EMF与预期值相匹配.
结论:
- 目前提出的基于CDM的分销策略可以有效控制磁轴承的故障耐受性,而磁轴承具有冗余结构.
- 该研究验证了支重建的机制,证明了对多重线圈故障的弹性.
- 这些发现有助于设计更可靠,更强大的磁悬浮系统.
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