轴系

A torsional oscillation observer based on the general observer was discussed to estimate the speed of the turbine generator. The dynamic characteristics of standard Luenberger observer with quantization effects were studied by Lyapunov stability criterion. It is concluded that the state estimate error can not asymptotically converge to zero in-the-large in presence of quantization effects.

讨论了基于状态观测器的汽轮机轴系扭振测量方法，采用李亚普诺夫稳定性判据分析存在量化效应的条件下标准龙贝格观测器的动态特性，指出由于数字系统中的有限字长效应会使观测器的跟踪性能恶化，估计误差不能在大范围内渐进收敛。

The torsional oscillation problem will make the shaft endure big torque time and again, which produces the fatigue life loss and even makes the shaft broken.

机网扭振相互作用会使机组轴系反复承受较大的扭矩，从而造成疲劳寿命损耗、甚至直接损坏。

Axial-system torsional oscillation Hopf ramification Nonlinear dynamic state Characteristic root analysis

轴系扭振； Hopf分歧；非线性动态；特征根分析

Test research on the bending vibration and the torsional vibration has been carried out in the part.

本文进行了包括轴系弯曲振动和扭转振动两个内容在内的试验研究。

A tridimensional model of a Jeffcot rotor is reported.

轴系的计算模型采用连续质量模型。

During recent years, the relative departments have paid attention to the problem that is the coupling flexural-torsional vibration of turbogenerator units.

近年来，机组轴系弯曲振动和扭转振动的相互耦合对机组安全运行影响的问题，引起了有关方面的重视。

Stability problems of rotating shaft of large turbogenerator units have been interested in for many years.

大型汽轮发电机组轴系运动稳定性问题多年来一直为人们所关注。

The properties of torsional vibration wave in a 200 MW of turbogenerator shaft system are calculated.

计算了一台200 MW机组转子轴系扭振波动特性的精确解，并与离散系统计算结果做了比较。

With the example of 200MW turbogenerator shafts, a simulation calculation is carried out, and the calculated result is compared with the Holzers.

文中以某200MW汽轮发电机轴系为例，进行了仿真计算，并将计算结果与赫尔兹法运算结果进行了比较。

Based on actual hydro-electric generating set, this paper studies horizontal dynamic Characteristics and dynamic response under the unbalanced force, analyses the stability and the position of the most adverse reaction.

本文针对实际机组，通过建立机组动力学模型，深入研究了大型水轮发电机组轴系的横向动力特性和不平衡力作用下的动力响应，分析机组的稳定性和最不利反应位置。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。