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《China Mechanical Engineering》 2016-01
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Testing Research of Rotor Center Trajectory of Oil-film Bearing with GMA under Dynamic Control

Wu Chao;Yin Xuemei;Wang Wen;Zhengzhou University of Light Industry;Shanghai University;  
The principles of the testing rig supported by controllable oil-film bearing based on GMA were introduced.Dynamic experiments on rotor center trajectory by use of the controllable bearing were completed,whose results show that,if the appropriate control current and phase difference are adopted and imposed on GMA,the controllable hydrodynamic bearing can restrain the vibration value of rotor working frequency dynamically,and reduce obviously rotor center trajectory.Testing results also show that,for a certain control current,there is an optimal value of phase difference which can minimize the vibration amplitude of rotor working frequency;the optimal value of phase difference has a tendency to become bigger with the increase of control current.It is proved that the controllable journal hydrodynamic bearing with GMA has the strong ability to dynamically control the rotor-center locus and reduces the vibration of the rotor supported by the controllable bearing,with outstanding position and rotation precision.
【Fund】: 国家自然科学基金-河南人才培养联合基金资助项目(U1404515);; 郑州轻工业学院骨干教师资助项目(2013000356)
【CateGory Index】: TH133.3
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