中国电机工程学报
中國電機工程學報
중국전궤공정학보
ZHONGGUO DIANJI GONGCHENG XUEBAO
2012年
5期
111-118
,共8页
非线性动力学%平行不对中%质量不平衡%非对称柔性转子%非线性油膜力
非線性動力學%平行不對中%質量不平衡%非對稱柔性轉子%非線性油膜力
비선성동역학%평행불대중%질량불평형%비대칭유성전자%비선성유막력
nonlinear dynamics%parallel misalignment%mass unbalance%unsymmetrical and flexible rotor%nonlinear oil film forces
考虑非对称柔性轴系质量不平衡和平行不对中的影响后,主要研究1个发电机转子系统的非线性动力学问题。首先基于转子间不对中的约束关系,推导了在非线性油膜力作用下多跨转子系统的运动微分方程,采用数值方法,重点分析系统的非线性振动特性,例如,系统的轴心轨迹、Poincaré截面和最大Lyapunov指数等。结果表明：在较低转速时,转子的轴心轨迹在较小的范围内作同步振荡;随着转速提高,系统出现分叉和混沌等非线性动力学现象。最后讨论了转子不对中量的变化对系统动力学的影响。
攷慮非對稱柔性軸繫質量不平衡和平行不對中的影響後,主要研究1箇髮電機轉子繫統的非線性動力學問題。首先基于轉子間不對中的約束關繫,推導瞭在非線性油膜力作用下多跨轉子繫統的運動微分方程,採用數值方法,重點分析繫統的非線性振動特性,例如,繫統的軸心軌跡、Poincaré截麵和最大Lyapunov指數等。結果錶明：在較低轉速時,轉子的軸心軌跡在較小的範圍內作同步振盪;隨著轉速提高,繫統齣現分扠和混沌等非線性動力學現象。最後討論瞭轉子不對中量的變化對繫統動力學的影響。
고필비대칭유성축계질량불평형화평행불대중적영향후,주요연구1개발전궤전자계통적비선성동역학문제。수선기우전자간불대중적약속관계,추도료재비선성유막력작용하다과전자계통적운동미분방정,채용수치방법,중점분석계통적비선성진동특성,례여,계통적축심궤적、Poincaré절면화최대Lyapunov지수등。결과표명：재교저전속시,전자적축심궤적재교소적범위내작동보진탕;수착전속제고,계통출현분차화혼돈등비선성동역학현상。최후토론료전자불대중량적변화대계통동역학적영향。
The non-linear dynamics of a generator rotor system was mainly investigated after considering the effects of the unsymmetrical and flexible shafts with the faults of the parallel misalignment and mass unbalance.Firstly,motion equations of the multi-rotors system under the action of non-linear oil film forces was derived,then the dynamic behaviors such as the rotor orbit,Poincaré section and the largest Lyapunov exponent etc.,were analyzed by numerical technique.The results show that at low speed the orbit synchronously oscillate within a small zone,as the speeds increase,the bifurcation phenomena and chaotic oscillations occur.Finally,the influence of the dynamics on the change in amount of the misalignment was also discussed.
