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  high speed
The ADSP-TS101 is a high performance digital signal processor (DSP) with good properties that include parallel processing and a high speed.
      
The research about hysteresis characteristic of finger seal (FS), which was carried out based on the model with static loads, could not reflect the dynamics behavior of FS system when the rotor runs at high speed.
      
The developed actuator is characterized by high frequency (30 Hz), high speed (380 μrad/s), large travel (>amp;gt;270°), high resolution (1 μrad/step), and work stability.
      
Shaking table test of composite foundation reinforcement of saturated silty soil for high speed railway
      
Information on the pressure at the edge of a turbulent stream is necessary for many dynamic calculations of waterworks and for the design of structures which move at high speed in water or air.
      
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The information in this article covers the investigation, fabrication and testing of an inertial profilometer system, developed for use on the railway track test car. The principle of inertia method and its application to the profilometer are demonstrated and described, including the details of the mechanical configuration and the electronic implementation used. The profilometer is used to measure track profile at speed, particularly at high speed.Both laboratory and field tests were conducted to evaluate...

The information in this article covers the investigation, fabrication and testing of an inertial profilometer system, developed for use on the railway track test car. The principle of inertia method and its application to the profilometer are demonstrated and described, including the details of the mechanical configuration and the electronic implementation used. The profilometer is used to measure track profile at speed, particularly at high speed.Both laboratory and field tests were conducted to evaluate the performance of the profilometer system. Comparisons are made between the profilometer measurements at speed and the level instrument measurements under the wheel loading of the track test car in the same section, and between the successive measurements of profilometer at fast passenger train speed in the same trunk line section. The results are satisfactory. At 160km/hr. test run, data are also normally recorded.

本文内容包括轨道试验车用惯性基准法轨道高低检测装置的研究、试制和试验。对弦测法存在的问题作了简要的叙述。文中论证和说明了惯性基准法原理及其在轨道试验车上的应用,包括机械构造和电子部分。惯性基准法轨道高低检测装置适于在运行中、特别是高速运行的列车上量测轨道高低。文章用试验室和现场试验结果评价这种装置的性能。在同一轨道上,对这种装置在不同速度时检测的数据,和在轨道试验车车轮静压下用水平仪量测的数据作了比较。以快速旅客列车速度对同一干线区间,用同一装置又作了重复性比较试验。这些试验的结果证明此一测试装置能够反映轨道的真实情况。在160公里/时测试也得出了正常的记录。

The article describes the principles and mothods of design of the automatic hump height and the profile of automatic hump yard.The objectives of the design of the automatic hump height are:(1) Deliver cars having a hard-rolling resistance to the far end of the hump yard ( "Target Shunting" System) or to the clearance point with acceptable coupling speeds ( "Continuous speed control" System) under adverse weather conditions.(2) Provide higher humping rate and more space between cars for operating...

The article describes the principles and mothods of design of the automatic hump height and the profile of automatic hump yard.The objectives of the design of the automatic hump height are:(1) Deliver cars having a hard-rolling resistance to the far end of the hump yard ( "Target Shunting" System) or to the clearance point with acceptable coupling speeds ( "Continuous speed control" System) under adverse weather conditions.(2) Provide higher humping rate and more space between cars for operating switches.The design of the automatic hump profile depends upon the desired speed of cars leaving of the hump crest. The automatic hump profile should be distributed in three sections: the accelerative、higher speed、and decelerative section.The design of the automatic hump yard profile depends upon the system of speed control.

本文介绍自动化驼峰峰高及驼峰、调车场纵断面设计的原则和方法。自动化驼峰峰高设计的目的如下:(1)难行车在不利条件下能溜到车场的终端(采用“打靶式控制”系统时),或能溜到计算点具有安全连挂速度(采用“连续调速控制”系统时);(2)具有较高的解体速度和较富裕的道岔间隔。自动化驼峰纵断面应根据车辆理想溜放速度曲线设计,可设计成三个坡段:车辆加速坡段、车辆高速坡段和车辆减速坡段。自动化驼峰调车场的纵断面应根据采用的车辆速度控制系统方案进行设计。

Commutation parameters of 700kW pulsating traction motors at high speed with minimum field weakening are analysed. It is found that the ac unbalanc- ed electromotive force under such conditions is much larger than that under normal conditions. Therefore, an inductive shunt should be inserted in the adjustable shunt circuit to improve commutation performance at high speed,so as to meet the locomotive running requirement at high speed.The effect of different reactances on decreasing ac unbalanced...

Commutation parameters of 700kW pulsating traction motors at high speed with minimum field weakening are analysed. It is found that the ac unbalanc- ed electromotive force under such conditions is much larger than that under normal conditions. Therefore, an inductive shunt should be inserted in the adjustable shunt circuit to improve commutation performance at high speed,so as to meet the locomotive running requirement at high speed.The effect of different reactances on decreasing ac unbalanced electromotive force is also analysed. This paper describes several structuralmodifications for improving commutation stability and reducing the possible sparking and flashover.

本文分析了700千瓦脉流牵引电动机在深度磁场削弱的高速工况下的換向参数,发现此时的交流不平衡电势远较额定工况时为大,认为从改善高速換向性能以适应提高机车运行的速度要求出发,在牵引电动机可调分路中应接入一个感应分路器。文內分析了感应分路器的不同电抗值对降低交流不平衡电势的影响。本文还介绍了为改进换向性能、减少环火的几种正在采用的结构措施。

 
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