發(fā)布時間：2019-03-19 19:45

【摘要】：在軸承轉(zhuǎn)子系統(tǒng)中,為提高轉(zhuǎn)子的旋轉(zhuǎn)精度,對系統(tǒng)進行了主動控制�；谌嵝糟q鏈可傾瓦軸承建立了軸承轉(zhuǎn)子系統(tǒng)軸心軌跡和軸瓦擺動的計算模型,在考慮系統(tǒng)慣性和非線性油膜力的基礎(chǔ)上,計算了轉(zhuǎn)子在不平衡響應(yīng)下的非線性軸心軌跡和軸瓦的擺動規(guī)律,并提出了一種振動的主動控制方法。仿真計算結(jié)果表明,轉(zhuǎn)子的不平衡載荷是轉(zhuǎn)子產(chǎn)生周期性振動的重要因素。通過在軸瓦的瓦背施加力,控制軸瓦的擺動規(guī)律,可以抵消轉(zhuǎn)子不平衡載荷引起的振動。通過主動控制,轉(zhuǎn)子振動明顯減弱,極大得提高了轉(zhuǎn)子的旋轉(zhuǎn)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.
【作者單位】： 山東大學機械工程學院高效潔凈機械制造教育部重點實驗室;
【基金】：國家自然科學基金資助項目(51575318)
【分類號】：TH133.31

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