驱动

for carrying out a small physical volume and high reliability of the motor driving and control,by using hip4081 chip and aln hybrid integrated technology,a hybrid integrated technology h bridge circuit based on hip4081 is designed to control bidirectional circumrotation and speed regulation of the motor.by practical application,the bidirectional circumrotation/speed adjustment of motor are realized safely and reliably.the products has a small physical volume,fast heat transmission,high efficiency and can operate properly in severe environment.it can enhance the reliability of the drive circuit and the system,and adapt to both military and commercial usage.

摘 要：为了实现小体积、高可靠的电机驱动与控制，利用hip4081专用芯片和aln厚膜混合集成技术，设计一种基于hip4081的厚膜h桥电机驱动电路，完成了h桥式驱动电路对电机双向转动和调速的控制。经实际应用，该电路不仅安全可靠地实现了电机的双向转动和调速功能，且产品体积小，导热性能好，效率高；还能在恶劣的使用环境下安全工作，提高了驱动电路和系统的可靠性，适合军、民两用。

The invention relates to the brush part for one such electric toothbrush, comprising a carrier tube wherein a drive translator, which can be coupled to a hand-part drive, is moveably mounted, in addition to a moveably mounted bristle carrier which contains a field of bristles and which can be oscillatingly driven by said drive translator.

在此方面，本发明一方面涉及这种电动牙刷的毛刷部件，其带有载体管以及可移动支承的刷毛载体，前者里面可移动支承可与手柄部件侧驱动装置联接的驱动传递件，后者支持刷毛区并可由驱动传递件振荡驱动。

There are single load model and double -load model with multispeed mechanism .Optional drive mode includes sidle drive , pneumatic drive , Frequency conversion motor drive and servo motor drive .

轻型横走式机械手 Light weight sidle robots TYA系列适用于250吨至50吨卧式注塑机产品及水口取出，有单截式和倍速机构双截式，可选购横行驱动方式，气动驱动，双频马达驱动，伺服马达驱动。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

Combined with the design objects of the section and tendon curve in a prestressed concrete continual girder bridge, the establishment of parametric model and the redact of parametric drawing program are discussed. And the implementation of the three kinds of parameter-driven: variation-driven, table-driven and dimension-driven is put forward.

结合预应力连续梁桥中梁体截面和钢束曲线等设计对象的具体特点，讨论了参数化模型的建立和参数化绘图程序的编制方法，并提出了变量驱动、表驱动、尺寸驱动这三种参数驱动方式的具体实现。

In the first section, this thesis introduces related concepts of USB protocol, the structure of controller and related knowledge of Windows driver, followed by design of USB driver, communication between USB driver and application, and renumeration.

在USB驱动部分，介绍了USB协议的相关概念、USB控制芯片的内部结构及Windows驱动程序的相关知识，随后介绍了USB驱动程序的开发、USB驱动程序与应用程序的通信机制，以及二次加载所需的程序。

Ningbo Tian-Ge electronics is a professional production design of LED \ LCD driver chip companies, our company produced such a drive has many types, including a belt-driven keyboard scan, and direct drive display chips, and have high rank and low rank of the range.

宁波天戈电子是一家专业的生产设计LED\LCD驱动芯片的公司，我公司所生产的这样的一个驱动有很多类型，包括了带键盘扫描的驱动，和直接驱动显示的芯片，而且有高段位和低段位的不等。

This paper will emphasize on analyzing these two problems, and make a driving board with TLP250, this driving circuit can drive four IGBTs.and its driving signal is produced according to the requests, each driving signal is separated rightly with only one power supply, this circuit can also prevent from overflowing or short-circuit and keeping bridge arm from connecting directly.

本文将着重分析这两个问题，并利用TLP250设计了一块模块驱动板，此板可以驱动四个IGBT。此板的驱动信号符合要求，每路驱动信号在电位上是隔离的，而输入电源只有一个，该电路还有过流或短路保护功能以及防止桥臂直通的功能。

In natural vegetation area, where mainly are forest land, the yearly relative humidity and precipitation of spring are the driving forces to the change of NDVI. In brush and shrub area, the change of NDVI is driven by the precipitation and relative humidity of autumn. In grassland and rare tree bush grassland district, the main driving forces are human factors, and the driving mechanism is that farmland and cropping sown area are negative to the change of NDVI, but society factors are positive.

对于以林地为主的自然植被区植被覆盖变化，主要受到春季降水、春季湿度和年均湿度的正驱动，黄淮海地区的北部主要为干旱、半干旱区，因此春季降水偏多会利于植被生长；灌丛和萌生矮林区，秋季降水和秋季湿度对其植被NDVI变化呈负驱动；草原和稀树灌木草原区植被覆盖的变化，耕地面积、作物播种面积对之为负驱动，而其他社会经济因子则为正驱动。

The invention relates to a multi-axle heavy ground car chassis, comprising a cab, a first front drive axle, a second back drive axle and a third back drive axle which are fixedly connected on a crossbeam of the chassis, and fixedly connected cartwheels. The invention is characterized in that a turn-able bearing axle connected to a turning mechanism is fixed between the first front drive axle and the second back drive axle on the crossbeam.

本发明涉及一种多轴重型越野汽车底盘，包括驾驶室、固定连接在底盘大梁上的前驱动一轴和后驱动二、三轴及与其固定连接的车轮，其特征是：所述大梁上的前驱动一轴和后驱动二轴之间固定连接有可转向的承重轴，所述承重轴与转向机构连接。

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。