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Dynamic Response during the Online Compensation of Misalignment Based on Auxiliary Electromagnetic Support

Dynamic Response during the Online Compensation of Misalignment Based on Auxiliary Electromagnetic Support
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摘要 A new support structure,named auxiliary electromagnetic support,is introduced to adjust the position of rotor shaft online.The auxiliary electromagnetic support consists of sliding bearing,iron core,radial spring,pedestal and electromagnet that could adjust the rotor position.In a rotor system adopting two auxiliary electromagnetic supports,the online compensation of misalignment was achieved without stopping work.Using the proposed auxiliary electromagnetic support,the analytical solution of dynamic response was obtained by analyzing a simulated single-degree-of-freedom(SDOF)system.And the dynamic response of the multi-degrees-of-freedom(MDOF)system in the experiment is acquired using Newmark variable step-size integration method.Further the new design is tested in a symmetrical single-disk rotor-bearing system.With both the theory analysis and the experimental results,some conclusions are obtained about the relationship between the vibration and the system damping which are related to system stability. A new support structure, named auxiliary electromagnetic support, is introduced to adjust the position of rotor shaft online. The auxiliary electromagnetic support consists of sliding bearing, iron core, radial spring, pedestal and electromagnet that could adjust the rotor position. In a rotor system adopting two auxiliary electromagnetic supports, the online compensation of misalignment was achieved without stopping work. Using the proposed auxiliary electromagnetic support, the analytical solution of dynamic response was obtained by analyzing a simulated single-degree-of-freedom(SDOF) system. And the dynamic response of the multi-degrees-of-freedom(MDOF) system in the experiment is acquired using Newmark variable step-size integration method. Further the new design is tested in a symmetrical single-disk rotor-bearing system. With both the theory analysis and the experimental results, some conclusions are obtained about the relationship between the vibration and the system damping which are related to system stability.
出处 《Journal of Donghua University(English Edition)》 EI CAS 2008年第4期395-399,共5页 东华大学学报(英文版)
关键词 electromagnetic bearing MISALIGNMENT failure diagnosis NONLINEARITY 电磁轴承 故障诊断 非线性 辅助装置
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