分岔

Based on the nonlinear dynamical model of the rotor-bearing system with rub-impact and pedestal looseness, the system periodic motion and its stability were studied in unbalance-rotating speed plane and rotor/stator clearance- rotating speed plane, and the effect of parameters on the system was analyzed and tested by the experiment.

以含有松动和碰摩耦合故障的转子轴承系统为研究对象，对松动碰摩耦合故障转子的周期运动稳定性及其失稳规律进行了研究，得到了系统在不平衡量-转速、碰摩间隙-转速等参数域内的分岔集，分析了这些参数对系统周期运动稳定性的影响，并用试验加以验证。

Based on the nonlinear dynamical model of the rotor-bearing system with rub-impact fault, the stability of the periodic motion of the system in unbalance-rotating speed plane and rotor/stator clearance- rotating speed plane were studied by the continuation-shooting algorithm. The system periodic motion and its stability were obtained. An experimental setup was developed to investigate nonlinear vibration characteristics of such rotor bearing system.

根据碰摩转子轴承系统的非线性动力学模型，利用延拓打靶算法，在碰摩转子轴承系统不平衡量-转速和碰摩间隙-转速参数域内，研究系统的周期运动及其分岔失稳等动力学行为，得到了系统周期运动的稳定性及失稳规律；建立了研究转子轴承系统碰摩故障的实验装置，通过实验，研究了转子系统碰摩故障的非线性振动的特征。

At present the studies on bifurcations and chaos are the most important subject for...

分岔和混沌现象的深入研究是当前国际上非线性动力系统的前沿课题。

Secondly, Bifurcations in induction motor and drives are concerned with.

其次分析了感应电动机及其传动系统的分岔现象。

At present the studies on bifurcations and chaos are the most important subject fornonlinear dynamical systems at home and abroad.

分岔和混沌现象的深入研究是当前国际上非线性动力系统的前沿课题。

Border collision bifurcations have been given much attention in recent years .

最近几年，边界碰撞分岔已经引起了越来越多人的关注。

In the present paper, grazing bifurcations of a cantilever system with one-sided impact is investigated.

局部不连续映射是研究非光滑动力系统擦边分岔的一种有力工具。

In the instability region predicted, various bifurcations and chaos are disclosed.

在已知的不稳定区中，具体讨论了系统的分岔与混沌性质。

We introduce the notion of typical or generic behavior and study bifurcations, i.e. transitions between different types of behavior.

我们介绍典型的或者一般的性质，同时研究分岔，即不同类型性质的转变。

The second key technique is to detect and visualize local bifurcations in 2d time-dependent vector fields.

第二项关键技术是局部分岔的检出与可视化。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。