高可靠性主动磁悬浮轴承的冗余支承重构关键技术研究

项目名称： 高可靠性主动磁悬浮轴承的冗余支承重构关键技术研究

项目编号： No.51205300

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 机械工程学科

项目作者： 程鑫

作者单位： 武汉理工大学

项目金额： 25万元

中文摘要： 高速精密转子系统是先进制造装备与国防核心装备的关键部件，而常规机械轴承性能无法满足高速精密转子的支承性能需求，其原因是机械摩擦特性限制了机械轴承性能大幅提升。主动磁悬浮轴承具有无摩擦、无磨损、无需润滑、精度高、支承特性可控等特点，其转子速度理论上仅受限于转子材料，是高速精密转子系统的理想支承。但目前主动磁悬浮轴承的可靠性无法满足诸如航空发动机等高科技设备的要求。冗余性设计是提高可靠性的有效措施，在主动磁悬浮轴承部分结构故障后，通过在线重构冗余支承而继续提供有效支承力，维持轴承系统正常运行。现有的主动磁悬浮控制理论与方法不足以对应对复杂故障状况，为此，本项目研究主动磁悬浮轴承系统失效特征识别、基于失效特征的冗余支承重构准则与控制策略，旨在掌握适应复杂失效工况的冗余支承重构控制机理，提高主动磁悬浮轴承在复杂工况下的可靠性与使用寿命，保障主动磁悬浮轴承在先进制造装备或国防核心装备中的应用安全。

中文关键词： 高可靠性；主动磁悬浮轴承；冗余支承；重构；容错控制

英文摘要： High-speed and accurate rotor system is the critical component in advanced manufacturing equipment and core defence equipment, but conventional mechanical bearings can't satisfy its supporting characteristics requirement because mechanical friction limits bearing performance improvement. Active magnetic bearings,with the advantages of no mechanical touch, no frays and dispensing with lubricate, high accuracy, controlled support characteristics and high speed only limited by rotor materials, is the excellent choice of high-speed and accurate rotor. Therefore current availability status of active magnetic bearings can't satisfy the requirement of high-tech equipment, such as aircraft engine. Redundancy design is an effective measure to improve availability.By reconfiguring redundant supporting, effective supporting forces are continuely generated to maintain bearing system operation while partial structural faults emerging. Considering current control theory and method of active magnetic bearings not enough to cope with complicated faults condition，this proposal carries on the research of faults characteristic recognition in Active magnetic bearings system, and redundant supporting reconfiguration standards and control strategy, which aims to understand the control mechanism in redundant supporting reconfiguration

英文关键词： High-availability；Active magnetic bearings；Redundancy supporting；Reconfiguration；Fault-tolerant control