| 1. | At last , an application system was designed for ccd torsional oscillation measurement method
最后,针对ccd扭振测量法的实际应用,设计了应用系统。 |
| 2. | This paper makes an overview of the reasons , corresponding analysis methods and countermeasures for shaft torsional oscillation
本文对机电耦合引发振荡的原因以及研究方法和抑制措施进行了总结。 |
| 3. | The design of image fountain signal , imaging technique and data processing are three key technologies to carry out ccd torsional oscillation measurement method
要实现ccd扭振测量法,涉及到图像源信号的设计、成像技术和数据处理三项关键技术。 |
| 4. | The period of these torsional oscillations depended on the rotational inertia of the helium ; the oscillations occurred more rapidly when the inertia went down , just as if the mass of the helium decreased
这种扭转振?的周期取决于氦的转动惯量，转动惯量减少时振?加快，看起来好像是氦的质量减少了。 |
| 5. | Ccd torsional oscillation measurement method is based on image technology . by taking photo of shaft by ccd camera , acquire the image signal , and then extract the torsional oscillation information from it using data processing arithmetic
Ccd扭振测量法是一种基于图像技术的方法,利用ccd相机对轴进行拍照,得到含有扭振信息的图像信号。 |
| 6. | The main research is how to control and long term monitor the shaft torsional oscillation . the measurement technique of torsional oscillation is an important link of torsional oscillation control and monitor system and a basement to carry out the corresponding method
扭振研究的主要内容是如何实现对轴系扭振的控制及长期监测,而扭振的测量技术又是扭振控制和监测系统的重要环节,是扭振控制与监测手段付诸实践的基础。 |
| 7. | With the development of the electric power industry , the capacitance of a turbo - generator has increasingly become larger , which risk the torsional oscillation in the flexible shaft system of large turbine - generators . the problem of shaft torsional oscillation has become the key technology need to be solved urgently in the development of large power system and unit
随着电力工业的发展,汽轮发电机组的单机容量正日益大型化,导致机组轴系扭转振动的危害性日益突出,轴系扭振问题已成为发展大电网和大机组所急需解决的关键技术问题。 |
| 8. | Magnetoelectricity gear method is a general torsional oscillation measurement method . it has disadvantages on less measure point and improved - needed dynamic characteristic . in the paper a new method of measuring torsional oscillation of the turbine - generator shaft was proposed on the basis of high speed ccd ( charge coupled device ) photography
现行的扭振测量方法以磁电式齿轮测量法为主,这种方法存在测点少,动态特性有待提高的缺点,就此本文提出了一种基于高速ccd ( chargecoupleddevice )摄像技术的汽轮发电机组轴系扭振测量的新方法。 |
| 9. | The torsional interaction from the electrical couplings among the generating sets is presented and the influence of the natural torsional frequency of the generating sets on the torsional oscillation characteristics is described . the torsional dynamics between identical parallel turbine - generators are deduced as well as that between non - identical parallel turbine - generators . then the basic principle of equivalent simplification of generating units for different operational condition is summarized
( 2 )介绍了多机电力系统机组间电气耦合对轴系扭振特性的影响，以及机组自然频率与机组扭振相互作用的关系，并对复杂系统中并列运行的相同发电机和不同发电机间的扭振相互作用进行了分析，归纳了不同运行条件下机组等值简化的基本原则。 |
| 10. | Then , considering the existing of the ground water , we can treat the soil layer below the water level as the saturated one and the soil layer above the water level as the single - phased elastic one . using this model , the torsional oscillations of the rigid disk resting on the saturated ground with an elastic layer is studied and the effects of the elastic layer on the foundation ' s vibration are discussed
接着，考虑到地下水的存在，将地下水位以下的土层视为饱和土，地下水位以上的土层视为理想的单相弹性层，按此模型研究了上覆单相弹性层的饱和地基上刚性基础的扭转振动问题，分析了弹性层的存在对基础振动的影响。 |
