Vibration Control of Rotordynamic Systems using Motors

使用电机的转子动力系统的振动控制

• 批准号: 0408777
• 负责人: Brian Fabien
• 金额: $ 21.81万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0408777&HistoricalAwards=false
• 关键词: Vibration; Control; Rotordynamic; Systems; using

AbstractThe control of vibration in rotordynamic systems is an important problem in engineering.These unwanted oscillations can lead to premature failure or poor performance of the system.Traditionally active vibration control of rotordynamic systems is accomplished by addingactuators (electromagnets or active magnetic bearings) that apply a radial force to the shaftof the rotor. These actuators are used in feedback control systems that are designed toameliorate the effects of the unwanted vibration.This project develops an approach to the control of vibration in rotordynamic systemsthat does not rely on external actuators. Here we consider rotordynamic systems that aredriven by electromagnetic motors. By modifying the commutation and control of thesemotors they can be made to produce a torque and a radial force. This radial force canthen be controlled to suppress the vibrations in the system. To evaluate the torque/forcegenerating capability of motors this project has set three broad objectives; (1) To developand experimentally validate models, suitable for use in control system design, that accuratelypredict the behavior of motors that are used as torque and radial force generators. (2) Todemonstrate the practical feasibility of using motors as torque/force generators in actualrotordynamic systems. Specifically, a ywheel energy storage (FES) device and a a harddisk drive (HDD) system. (3) To integrate these new techniques into the undergraduatecurriculum and provide research opportunities for women and underrepresented minoritystudents.Intellectual Merits: The use of axial and radial ux permanent magnet motors to generateradial forces for vibration suppression is believed to be a novel approach. In addition, theactuator modeling and control techniques developed in this project can be applied to otherAC/DC motor designs.Practical FES devices that use magnetic bearings require precise regulation of the airgap between the rotor and the stator. The controllers must provide stable operation overa range of speeds while rejecting the harmful effects of disk imbalance and base excitation.This project will design and implement a multiple model controller for a FES device thatuses an axial ux motor for torque and radial force production.Broader Impacts: By eliminating the need for external force actuators this research willlead to FES devices with higher energy densities. This would make FES systems a practi-calalternative to electrochemical energy storage systems. When used in conjunction withrenewable energy sources these improved FES devices can help reduce national dependenceon fossil fuels.This research can also provide a low-cost means for suppressing vibration in HDD sys-tems,thus improving the data storage capabilities of these devices. It is estimated that theUnited States digitally stored more than 400 billion documents in 1997, with 72 billion newdocuments being added each year. Thus, it is important to conduct research that will leadto increased reliability of HDD devices.The education initiatives of the proposed project will focus on bringing modern techno-logicaldevelopments in bearing design and motor control into the undergraduate classroom.Also, in collaboration with the UW/NSF LSAMP program the the project will focus onoutreach activities by providing opportunities for underrepresented minorities and womento work in an engineering setting.

转子动力系统的振动控制是工程中的一个重要问题，这些不必要的振动会导致系统的过早失效或性能下降，传统的转子动力系统振动主动控制是通过在转子轴上加作动器（电磁铁或主动磁轴承）来实现的。这些致动器用于反馈控制系统，旨在改善不必要的振动的影响。本项目开发了一种方法来控制转子动力系统中的振动，不依赖于外部致动器。在这里，我们考虑由电磁电机驱动的转子动力学系统。通过改变这些电动机的换向和控制，可以使它们产生转矩和径向力。然后可以控制该径向力以抑制系统中的振动。为了评估电机的扭矩/力产生能力，该项目设定了三个广泛的目标;（1）开发和实验验证适用于控制系统设计的模型，准确预测用作扭矩和径向力的电机的行为发生器。(2)论证了在实际转子动力系统中使用电机作为转矩/力发生器的实际可行性。具体地，Y轮能量存储（FES）装置和硬盘驱动器（HDD）系统。(3)将这些新技术融入本科课程，并为妇女和代表性不足的少数民族学生提供研究机会。智力优点：使用轴向和径向超声波永磁电机产生径向力的振动抑制被认为是一种新颖的方法。此外，本计画所发展之致动器建模与控制技术亦可应用于其他AC/DC马达之设计，而使用磁性轴承之实际FES装置则需要精确调整转子与定子间之气隙。该控制器必须提供稳定的运行在一个范围内的速度，同时拒绝磁盘不平衡和基地excitation.This项目的有害影响将设计和实现一个多模型控制器的FES设备，使用轴向超声波电机的扭矩和径向力production.Broader影响：通过消除需要的外力致动器，这项研究将导致FES设备具有更高的能量密度.这将使FES系统成为电化学储能系统的替代品。当与可再生能源结合使用时，这些改进的FES设备可以帮助减少国家对化石燃料的依赖，这项研究还可以提供一种低成本的方法来抑制HDD系统的振动，从而提高这些设备的数据存储能力。据估计，美国在1997年以数字方式存储了超过4000亿份文档，每年新增720亿份文档。因此，重要的是要进行研究，这将导致增加硬盘驱动器设备的可靠性。拟议项目的教育举措将集中在把现代technologicaldevelopments在轴承设计和电机控制到本科课堂。此外，与华盛顿大学/国家科学基金会LSAMP项目合作，该项目将通过为代表性不足的少数民族和妇女提供在工程环境中工作的机会，重点关注外展活动。