流控制

MR fluid damper is a semi-active control device that uses MR fluids to produce controllable damping force.

利用磁流变液的流变特性制成的磁流变阻尼器是一种性能优良的半主动控制装置。

Based on the TES models of heavy traffics with certain burstiness,a new practical formula for computation of effective bandwidth of traffics was derived out.

基于具突发性 Heavy业务流的TES模型，推导出一个计算Heavy业务流有效带宽的实用的公式，并由此公式求得的有效带宽，作为基于测量的接纳控制算法中新业务流所申请的带宽。

Traffic signal control system Settings in each intersection signal lights color control parameters, to signal under the control of the intersection in all directions of traffic flow in the intersection of the stalled minimum delay time, and in a number of intersection signal chain control , To seek optimal within the region, to further improve vehicle operating conditions, making pollutant emissions reduced.

交通信号控制系统通过在每个交叉口设置色灯信号控制参数，使其信号控制下的本交叉口所有方向的交通流在交叉口的停顿延误时间最小，以及在多个交叉口信号联锁控制时，寻求区域内最优，进而达到改善机动车运行工况，使得污染物排放量降低。

Workflow executing service is the kernel function of workflow management system, which is responsible for the runtime control of workflow management system.

工作流执行服务是工作流管理系统的核心功能，负责工作流管理系统的运行控制。

Based on the analysis of the control demands of the exterior overfall arc water gate, control system buildup, design of the control mode and the realizable control function are put forward.

本文在分析溢流表孔弧形工作闸门控制需满足要求的基础上，提出控制系统组成、控制方式的设计以及可实现的控制功能。

Summarizing the study of oversaturated traffic control, although it has a long researching history, the acquaintance limitation of network traffic flow retards its development. This limitation includes the traffic flow model, control methodology and control objectives.

纵观对过饱和状态控制问题的研究，虽然起步较早，但限于人们对控制对象认识的水平，使得研究过程中采用的交通流模型、控制方法和控制问题描述等重要的环节有所局限。

Based on the water environment spatial data mining and visualization method, the paper presents these main characteristics and innovations:①Measurement of contamination fluxes:A scene-based research strategy is proposed:measurement /water quality analysis→flow field simulation→contamination transformation rule→fluxes scene simulation→temporal-spatial rule analysis.②Serial numerical models of water environment in the Qiantang River:The controlled equations of the flow field model of the main river,united controlled equations of the main contamination fluxes and water quality prediction model at emergent time are set up.③GIS-based water quality and contamination fluxes decision-making assistance system:A water environment database has been set up;based on MapX and C#.net platform,a system has been developed to facilitate visual inquiry,decision-making and graphics export.

本文基于水环境空间数据挖掘与可视化的研究方法与体系，研究中的主要特色与创新点为：①河流污染物通量测算的技术与方法：提出了基于工况测量/水质分析→流场模拟→污染规律解析→通量情景模拟→时空规律分析的研究方案；②钱塘江水环境模拟系列数学模型：建立了钱塘江干流研究区域流场数学模型的控制方程、主要污染物通量模型的联合控制方程、突发污染事故水质预报模型的基本方程；③基于GIS的水质预报与污染物通量决策支持系统的研发：建立水环境时空数据库，基于MapX和C#。net平台进行系统的构建与开发，为研究的系列成果提供可视化的查询、决策与图形输出。

The status quo of the development of the high voltage high power conversion technology is summarized in chapter 1 and two interrelating technology developments - power switching devices and digital control technology, are introduced. In chapter 2, the topologies of multilevel converters and control schemes are summarized. Moreover, their advantages, disadvantages and application fields are also analyzed and compared.

本文首先在第一章中对高压大功率变流技术研究现状进行了回顾，并对与多电平变流技术紧密相关的电力电子功率器件、数字控制技术的发展情况做了介绍；第二章对目前多电平变流器的电路拓扑和控制策略进行了总结，并将各自的优缺点和应用场合加以分析、比较。

According to the typical flow distribution, the dynamic optimization model which adopt cycle length and split as the decision variables is set up, and the simulations are conducted in the condition of light, moderate and heavy traffic demands respectively.

针对典型的交叉路口交通流分布，以信号周期时长和绿信比为优化控制变量，建立了相应的交通流动态优化控制模型。

In succession, by using of the simulative program under various running conditions, we studies the different effects that various parameters on the dynamic current-collecting such as running speed, span length, ocs tension force, masses of pantograph head and framework, damping capacity and stiffness etc. Moreover, measures are suggested to improve the quality of current-collecting, especially the idea of active control scheme, which restains the fluctuation of contact force by modulating the air pressure of pantographs airbag.

利用弓网仿真程序对各种工况的弓网受流进行模拟仿真，分别研究了列车运行速度、接触网跨距、接触线张力以及受电弓弓头和框架质量、阻尼、刚度等对弓网系统受流的影响，提出通过主动控制技术对弓网系统的振动进行抑制的气囊调节方法，将受电弓气囊的气压值作为控制对象，通过对气囊气压的调节来抑制弓网接触压力的波动。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。