介绍了一种能导致汽轮机轴系扭振失稳的因素。
A new fact is introduced which may lead to unstable shaft torsional oscillation of steam turbine.
提出一种用SOPC技术实现轴系扭振测量的方案。
The paper introduces a new method for designing the vibration measurement system by SOPC technology.
轴系扭振模型采用集中参数等值模型，整个轴系分为6段。
Lumped parameter equivalent model is adopted in the shaft system torsional vibration model and the whole shaft system are divided into 6 parts.
说明能用多种方法利用轴系扭振参数对柴油机故障进行有效诊断。
The results shows that many methods can be used with torsion vibration parameters.
简单的压缩机轴系扭振频率一般根据比率系数就可对其进行判定；
The shaft torsional vibration analysis is a key technique in the design of the compressor shaft, which determines the safety operation of the compressor.
在进行汽轮发电机组轴系扭振分析时，通常假设轴系材料特性参数为常数。
In the process of torsional vibration analysis for turbogenerator rotors, the material characteristics parameters of shafts are often considered to be constant.
大型汽轮发电机组轴系扭振是发电机机械系统与电网系统相互耦合作用的结果。
The torsional vibration of the large scale turbo -generator shaft system is the responsive result of the mechanical-electrical coupling.
轴系扭振的模态对数衰减率正比于每个振动周期耗散的能量与峰值应能的比值。
This logarithmic decay ratio of the shaft set is in direct proportion to the ratio of the energy dissipated per cycle to the peak strain energy.
本文将优化理论应用于大型汽轮发电机组轴系扭振的研究，提出了一种优化建模方法。
This paper presents a kind of optimum modeling method to apply the optimum theory to the research on torsional vibration of a large turbine-generator shafts system.
对该问题的研究解释了由高压直流输电系统控制器诱发汽轮发电机组轴系扭振的机理。
Through studying, the mechanism of the subsynchronous torsion oscillation caused by the controller of HVDC system has been understood.
轴系扭振频率和响应计算采用连续质量模型，次同步谐振特性分析采用集中质量模型。
The continuous model is adopted in the torsional vibration frequency and resonance of shaft system, the lumped parameter equivalent applied in the sub-synchronous resonance.
对互补群群际能量壁垒准则在汽轮发电机组轴系扭振稳定性研究中的适用性进行了探讨。
The applicability of complementary -cluster energy-barrier criterion on researching stability of shaft system torsional vibration is discussed.
目前大型汽轮发电机组轴系扭振特性的现场试验中广泛采用稳态不对称短路变频激振法。
Presently, the method of steady state unbalanced currents is widely used in the field test of torsional vibration characteristics of large-scale steam turbine generator rotor system.
在快关过程中减小电气切换操作对轴系扭振的影响，是保证快关汽门顺利进行的积极措施。
A decrease in the effects of electrical switching on torsional oscillations of shafts during fast valving is advantageous to fast valving.
对柴油机轴系扭振的研究，以往是先建立扭振当量系统，然后进行自由振动与强制振动计算。
In the previous research on torsional. vibration of diesel engine shafting system, an equivalent system must be defined before calculating free vibration and forced vibration.
就大型汽轮发电机模型中饱和参数对汽轮发电机组轴系扭振响应计算的影响进行了详细的研究。
This paper discusses the effect of saturated parameters appearing in the mathematical model of a large turbogenerator on the response calculation of shaft torsional vibration.
基于CCD摄像技术的汽轮发电机组扭振测量方法，本发明涉及一种汽轮发电机组轴系扭振的测量方法。
The present invention relates to a turbine generator unit torsion vibration measuring method based on CCD image pick-up technique.
最后还列举了实际算例的扭振计算，证明此方法在解决船舶推进轴系扭振计算方面是一种有效、方便的方法。
The new method is able to solve torsional vibration of the shafting with branches and has been successfully used in many cases.
随着国内外多起扭振事故的发生及电力系统中多种导致扭振潜伏因素，机组轴系扭振题目已经引起广泛关注和重视。
Along with the occurrence of several accidents caused by rotors torsional vibration all over the world, the problem of rotors torsional vibration has drawn abroad attentions.
介绍了汽轮发电机组轴系扭振模拟系统的设计原则，利用雷卡迪传递矩阵分析计算了汽轮发电机组轴系扭振的固有特性。
The paper introduces the principle of torsion vibration simulator on turbo-generator rotor system, and computes natural characteristics using Riccati matrix.
将大型汽轮发电机系统作为一类复杂开放系统，基于非线性科学分析了该系统的动力学特性，论述了该系统轴系扭振的原因及其本质。
The causes and essence of the torsional oscillation of large turbogenerator which consider as a kind of complex open system was investigated by using nonlinear science theory.
依据设计原则，利用模态刚度矩阵、模态质量矩阵和模态频率相似进行了扭振模拟机轴系的设计，扭振模拟机轴系前三阶固有特性与实际机组轴系扭振动特性基本一致。
By modal stiffness matrix, modal mass matrix and modal frequency, shaft units of simulator is designed. The former three steps natural characteristics are identical with the real units'.
本文指出扭振轴系的“重频”与其结构特点有关。
This paper explains that the repeated frequencies of torsional systems have relations with their structural feature.
该方法能明显地改善轴系的扭振特性，可用于多种内燃机减振器的优化设计工作。
The method greatly improves the characteristics of torsional vibration of shafting and can be used in optimum design for several engines.
最后使用有限元法计算了某钢厂冷轧机主传动轴系的扭振固有频率和转矩放大系数。
Finally, the torsion vibration nature frequency and torque amplitude factor of a rolling mill are calculated by using finite element method.
计算结果表明，机组扭振频率避开了工频与倍频，轴系不会因共振而破坏。
The calculation result indicates that the torsional vibration frequency will avoid from power frequency and multiple frequency.
当扭振振幅或扭振应力超过限值时，设计橡胶扭振减振器将振幅衰减到容许范围内，消减曲轴系统的扭转振动。
When the torsional vibration amplitude and stress exceed the limit, the rubber torsional vibration damper should be designed to reduce the amplitude within the permitted range.
首先建立了推进轴系的两个扭振模型，并进行了轴系的扭振计算。
Firstly two torsional vibration models were built up and a calculation of their torsional vibration was made.
本文分析了内燃机曲柄连杆机构往复运动件的高谐次运动对轴系惯量变化和固有频率的影响，并对一多缸机轴系进行了扭振计算。
The effects of high order motions of reciprocating parts on the variation of inertias and natural frequencies of crankshaft system are discussed in this paper.
本文分析了内燃机曲柄连杆机构往复运动件的高谐次运动对轴系惯量变化和固有频率的影响，并对一多缸机轴系进行了扭振计算。
The effects of high order motions of reciprocating parts on the variation of inertias and natural frequencies of crankshaft system are discussed in this paper.
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