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为了提高电磁轴承备用轴承的性能,基于动力特性可控的径向电涡流阻尼器、弹性支撑以及滚动型或衬套型备用轴承提出了一种动力特性可控的弹性备用轴承新结构。介绍了这种新型备用轴承的结构和工作原理,在不同的转速和转子不平衡量下测量了电磁轴承失效后转子坠落在新型弹性备用轴承上的瞬态响应,分析了新型备用轴承对转子坠落在备用轴承上的瞬态冲击响应的抑制作用。结果表明:这种新型弹性备用轴承不仅具有结构简单、无工作介质、动力特性易于进行控制等特点,而且还能够显著减小电磁轴承失效后转子坠落在备用轴承上的瞬态冲击响应,使转子的振动很快得以衰减,减小了转子对备用轴承的冲击作用,是一种具有良好发展和应用前景的主动电磁轴承备用轴承结构。
In order to improve the performance of backup bearing of electromagnetic bearing, a new structure of elastic backup bearing with controllable dynamic characteristics was proposed based on the controllable radial eddy current damper with dynamic characteristics, elastic support, and rolling or bush type backup bearings. The structure and working principle of the new type of backup bearing are introduced. The transient response of the rotor falling on the new type of elastic backup bearing after the failure of the electromagnetic bearing is measured under different speed and rotor imbalance. The effect of the new type of backup bearing on the rotor crashes Suppression of Transient Impact Response on Spare Bearings. The results show that the new type of elastic backup bearing not only has the advantages of simple structure, no working medium, easy to control the dynamic characteristics, but also can significantly reduce the transient impact response of the rotor crashed on the backup bearing after the electromagnetic bearing failure, Of the vibration can be quickly attenuated, reducing the impact of the rotor on the backup bearing, is a good development and application prospects Active magnetic bearing backup bearing structure.