查询词典 oscillation method

CCD torsional oscillation measurement method is based on image technology.

通过数据处理算法提取图像中的扭振信息。

In the paper a new method of measuring torsional oscillation of the turbine-generator shaft was proposed on the basis of high speed CCD photography.

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。

The modal properties including modal frequencies and mode shapes of the torsional oscillation system were calculated and analyzed with eigen analysis and impedance matching method.

用特徵分析和阻抗匹配方法对系统各个模态固有特性包括固有频率和振型进行了对比计算和结果分析。

The design of image fountain signal, imaging technique and data processing are three key technologies to carry out CCD torsional oscillation measurement method. By analyzing the design principle, the paper devised an image source signal alternated with black and white strip and it has a good effect. Meanwhile, the system demand of imaging link was analyzed, such as light source, lens and camera etc. In addition, the principles of both the correlation algorithm and generalized correlation time delay estimation based on adaptive technology were studied, and a comparison between them was made as well.

本文中分析了图像源信号的设计原则，并设计了一种黑白相间的倾斜条纹图案作为图像源信号，获得了良好的测量效果；分析了测量系统对光源、镜头、相机等成像环节的要求；研究了相关算法和基于自适应技术的广义相关时延估计法两种数据处理算法的原理，并对两种方法的性能进行了比较。

This thesis entirely analysed the torsional oscillation characteristic of the engine and the power train the method both in frequency field and in time field with dynamic simulation soft of AMESim 4.2.1 from france.

摘 要：以某12缸V 型发动机为例，借用法国AMESim4.2.1动态仿真软件，采用频域和时域分析方法，分析了要发动机和传动系统扭振的特点。

Also a fatigue loss program is developed to evaluate each fault's fatigue loss. Then we use this method to research a real SC power system's shaft torsional oscillation problem.

最后建立一新型输电网络模型，研究新型的输电系统如串补输电系统故障对发电机轴系扭振的影响。

So this part will propose a new method based on the EMTDC to analyze the torsional oscillation problem. Since the EMTDC only has the 7 masses shaft model, use the user Module to develop a detailed shaft model.

由于EMTDC现有的轴系多质量块模型最多只能考虑7个质量块，所以基于模态转换与模态降阶的思想利用EMTDC自定义模块重新开发轴系的多质量块模型，使得能对轴系各截面进行考核分析。

The results of computation show that this method is very effective for reducing and controlling the transverse oscillation of wave motion and for the calculation of wave particle velocity of wave motion on free surface, w...

计算表明：这种0—1混合型边界元的剖分方式，在控制和减缓波浪"横向振动"幅度及水面单元水质点波动速度的计算方面，显示出了其独到的优越和灵活之处，为时域内的波浪非线性变形计算提供了时步上的数值保证

Based on the externally breaking stone with impact wave and the theory of pulsative oscillation jet nozzle,the electric-hydraulic pulse method can be used to clean the scale deposit on the internal surface of pipe of the gathering pipeline in oilfield.

在油田集输管网清垢中，电液压脉冲技术的应用是以电液压脉冲技术体外冲击波碎石的实践和先进的振荡脉冲射流喷嘴理论为基础，利用电液压脉冲清除管道内表面垢层。

matlab sps is used to build a simulink model of single-machine infinite-bus system, and based on the simulink model, simulation on effect of pss suppressing small disturbances low frequency oscillation is carried on, and some methods of improving power system transient stability are simulated, including avr and pss, short circuit cleared rapidly, fault current limiter and single-phase auto reclose. the study unifies the simulink model to realize matlab and vb seamless integration using the activex technology, and demonstrated the matlab simulation result with the vb contact surface. this method of matlab and vb integration can make up the matlab contact surface unfriendly flaw and offers a reference for the design for cai of power system analysis course.

运用matlab电力系统仿真模块集sps构建了单机—无穷大系统simulink模型，对电力系统稳定器抑制电力系统小扰动低频振荡的效果进行了仿真；对提高电力系统大扰动功角稳定性的措施，如自动电压调节器及电力系统稳定器、快速切除故障、故障限流器、自动重合闸等手段的使用效果进行了仿真验证；并结合单机—无穷大系统的simulink模型运用activex 技术实现sps与vb的无缝集成，将sps的仿真结果用vb界面显示，较好地弥补了matlab用户界面不友善的缺陷，为《电力系统分析》课程进行cai设计提供了思路。

I hope that this success is just the first in a long series.

我希望这只是成功的开始。

Three dimensional stresses on the interface of tire and soil, tire deflection and soil sinkage are measured.

测试轮胎——沙土界面上的三向应力、轮胎变形和沙土沉陷；建立考虑剪切应力对沙土承载特性产生影响的车轮牵引性能预测模型；分析车轮作用下土壤的纵向稳定性。