驱动

Researches show that the drive force characteristics of the electric tractor drive system based on series DC motor is close the ideal characteristics, the curves are concave, low speed with constant power, and high speed with constant torque; the electric tractor has large working speed under different shifts, but the extensive coincidence speed shows that the variable ratio of the gear is unreasonable; the maximum climbable gradient of this electric tractor is more than 30%, and does not need frequent shift when working for its extensive climbable gradient; there are many influence factors of continuous working time, which the more obvious factors are working speed and working load, the working time increases with the increase of the working speed and working load.2. Simulation researches on the drive characteristic of the electric tractor.

研究结果表明：基于串励直流电动机(来源：ABC21论文网www.abclunwen.com)的电动拖拉机电驱动系统的驱动力特性场接近理想驱动力特性场，其各挡下的驱动力特性是一组下凹的曲线，低速恒转矩，高速恒功率；同一行驶速度下所对应高挡驱动力大于低挡驱动力，这是由电机的调速特性决定的；电动拖拉机各个挡位下具有较广的稳定作业速度范围，但是各个挡位之间速度重合的范围较多，说明所用变速箱变速比与电动机匹配不合理；电动拖拉机最大爬坡度达到30%以上，并且各挡爬坡度变化范围较广，作业过程中不需要频繁换挡；影响电动拖拉机连续作业时间的因素较多，其中作业行驶速度和作业负荷影响最为明显，作业负荷越大，连续作业时间就越短，作业速度越快，连续作业时间就越短。2、电动拖拉机驱动特性仿真研究。

This paper presents a stepper motor drive control system design, including its clock pulse circuit, pulse distributor, and the drive circuit and power supply design.

摘 要：本文介绍了一种步进电机驱动控制系统设计方案，包括其时钟脉冲电路、脉冲分配器、以及驱动电路和供电电源的设计。

The philosophy so typical of BMW M naturally continues into the design and configuration of the driver's "workplace": Both of these all-wheel-drive high-performance sports cars come with a special M cockpit with the instrument cluster featuring a variable pre-warning field in the rev counter, specific vehicle function displays, and white display illumination.

这样的哲学宝马典型的自然延续到的设计和驱动程序的"工作地点"的配置：所有这些轮双方驱动高性能运动具有特殊的仪器M有一个变量具有驾驶舱前的群集来车预警领域的转速表，具体车辆函数显示，白色照明显示。

This thesis analyzes the background and research situation of the backlight home and abroad, and investigates the radiation principle, the driver topologies and resonant circuit of cold cathode fluorescent lamp.

本文分析了背光电源的研究背景、研究现状，研究了冷阴极荧光灯的发光原理、驱动电路的拓扑结构和谐振电路，并对冷阴极荧光灯建立了仿真模型，来优化设计冷阴极荧光灯的驱动电路。

At the same time the disposing principle of equilibrium weight on the driving axis of cold frame drived by eccentric wheel was improved.

同时，提出了偏心轮驱动的冷床驱动轴上平衡重的配置原则。

The circuit armature of the stepping motor was led Out by using the module of carbon brush and collector ring.

装置的切削主运动由液压马达直接驱动，进给运动由步进电机驱动。

Drivers are specific to a communications protocol, and there is always a default driver.

每种通信协议都必须使用专用的驱动程序，Oracle 还会指定一个连接时使用的默认驱动程序。

At first this paper compendiously introduces the structure of Water Quality Online Monitor System; after that this paper illuminates how to design and program driver of USB device under Windows CE in deeply and implements the vedio capture of Water Quality Online Monitor System.

在对系统实现涉及的相关技术讨论的基础上，论文详细的讨论了Windows CE下USB设备的驱动程序开发；并实现了在线水质监控系统中视频采集的功能，即USB摄像头驱动程序的实现。

Water is filled into 1/3-2/3 of underground solution cave, and light type nuclear fusion body is put into the cave. Igniting the nuclear fusion body make water reach water vapour state in high temperature and high pressure 300-400 deg.C and 30-40Mpa, which drives rotation of turbo generator to generate electricity. With power being done, exhaust steam is condensed in condensator. Then, igniting the nuclear fusion body is carried out in another solution cave.

一种利用热核聚变能发电的方法，它包括以下步骤：在地下熔洞中注入占该熔洞1/3～2/3的水，并在该熔洞水中放入轻核聚变弹体，引爆该弹体后使熔洞中的水达到300～400℃、30～40Mpa的高温高压水蒸汽状态，并使之驱动汽轮发电机旋转发电，作功后的乏汽经冷凝器冷凝；在另一熔洞水中再引爆一轻核聚变弹体，使该熔洞中的水达到300～400℃、30～40Mpa的高温高压水蒸汽状态，并驱动汽轮发电机旋转发电。

The electrostatic driving, in which the electrostatic force is normal to the electrode plate, is reviewed. Fringe effects of some typical micromechanical structures are investigated. Analytical formulas are obtained using conformal transformation.

对于法向静电驱动问题，本论文作了较完整的介绍，对典型体微机械结构在法向静电驱动时的边缘效应作了讨论，用保角变换方法得到了边缘效应的解析表达式，对微结构的设计有实用价值。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。