柔性铰链可倾瓦轴承不平衡响应的主动控制

发布时间：2019-03-19 19:45

【摘要】：在轴承转子系统中,为提高转子的旋转精度,对系统进行了主动控制。基于柔性铰链可倾瓦轴承建立了轴承转子系统轴心轨迹和轴瓦摆动的计算模型,在考虑系统惯性和非线性油膜力的基础上,计算了转子在不平衡响应下的非线性轴心轨迹和轴瓦的摆动规律,并提出了一种振动的主动控制方法。仿真计算结果表明,转子的不平衡载荷是转子产生周期性振动的重要因素。通过在轴瓦的瓦背施加力,控制轴瓦的摆动规律,可以抵消转子不平衡载荷引起的振动。通过主动控制,转子振动明显减弱,极大得提高了转子的旋转精度。
[Abstract]:In the bearing rotor system, in order to improve the rotor rotation accuracy, the active control of the system is carried out. Based on flexible hinge tilting pad bearing, the calculation model of bearing rotor system shaft center trajectory and bearing swing is established. On the basis of considering inertia and nonlinear oil film force of the system, the calculation model of bearing rotor system shaft center trajectory and bearing swing is established. The nonlinear axis trajectory and bearing swing law of rotor under unbalanced response are calculated, and an active vibration control method is proposed. The simulation results show that the unbalanced load of rotor is an important factor to produce periodic vibration of rotor. The vibration caused by the unbalanced load of the rotor can be counteracted by applying force on the back of the bearing to control the swing law of the bearing. Through the active control, the rotor vibration is obviously weakened, and the rotor rotation precision is greatly improved.
【作者单位】：山东大学机械工程学院高效洁净机械制造教育部重点实验室;
【基金】：国家自然科学基金资助项目(51575318)
【分类号】：TH133.31

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