查询词典 drive circuit

In this paper, a BUCK circuit added lead before the full bridge which used in BLDCM drive system is proposed, and this drive system is studied.

在永磁无刷直流电机驱动系统中，本文提出在传统的三相桥前加上BUCK电路，用于永磁无刷直流电机的驱动，并就系统进行了理论分析与实验研究。

This paper has made exposition to the design process of the motor drive electric control circuit and the fluid drive PLC control system in the machine processing control system based on PLC.

继电器控制系统已经无法满足这一需求，迫使人们去寻求一种新的控制系统来取代它。

A detailed analysis of the main circuit introduction, control method and working principle of the direct-drive wind energy conversion system are given to introduce the two important parts a of this paper: First part is the control method of the multiple boost convertor, the important instantaneous current control method of this paper is given through the analysis of the main circuit structure, control method and working principle. Then a steady-state analysis for low-frequency, a high-frequency component analysis, and a closed-loop tracking performance analysis for dynamic response are provided to analyze the method proposed; And the second part is the control method of invertor.

在系统变流器整体结构分析的基础上，引出本文重点研究的两个变流环节的控制：第一部分是系统升压斩波器的控制，通过分析相关主电路结构、原理，建立了数学模型，引出本文重点研究的瞬时值控制策略的概念和具体实现，并对升压斩波器的瞬时值控制策略进行了详细的高频、低频模型分析和稳态、动态性能分析；第二部分是系统并网逆变器的控制，通过对逆变器主电路的数学建模和控制要求分析，研究了并网逆变器的瞬时值控制策略，包括电感电流控制内环和直流电压控制外环的具体设计和实现方法。

This text explain computer control down case systematic operation principle and hardware software, etc. some designs automatically mainly, Hardware part include choice in one-chip computer among them, to procedure choice of memory, Switch amount interface, photoelectricity segregation and drive of coupling, urge design and design of the control circuit of circuit; Software part tell systematic design of keyboard this mainly.

本文主要阐述了，微机控制自动装箱系统的工作原理和硬件软件等部分的设计方案，其中硬件部分包括了对单片机的选择，对程序存储器的选择，开关量接口，光电耦合的隔离和驱动，驱动电路的设计以及控制电路的设计；软件部分的主要讲述了本系统键盘的设计。

Some designs automatically mainly, Hardware part include choice in one-chip computer among them, to procedure choice of memory, Switch amount interface, photoelectricity segregation and drive of coupling, urge design and design of the control circuit of circuit; Software part tell systematic design of keyboard this mainly.

自动化-本文主要阐述了，微机控制自动装箱系统的工作原理和硬件软件等部分的设计方案，其中硬件部分包括了对单片机的选择，对程序存储器的选择，开关量接口，光电耦合的隔离和驱动，驱动电路的设计以及控制电路的设计；软件部分的主要讲述了本系统键盘的设计。

It introduces a kind of novel loading test system, based on the operation principle of damper. this loading system is operated by the driving motor. it realizes the loading, in that the damper has a negative drive force that puts on the motor. Based on the ordinary electromagnetic damper, the thesis presents a novel hybrid excitation electromagnetic damper which has adjustable work characteristic, analyses the working principle and structural feature of the electromagnetic damper, deduces the formulas to calculate the eddy current density through the Electromagnetic theory, analyses the distribution of the eddy current in the cotyloid rotor, and also studies the method of calculating the damp torque, establishes the mathematical model of the electromagnetic damper, analyses the relationship between the electromagnetic damper structural parameter and damp torque, researches the engineering design and analysis method of the electromagnetic damper, provides theory foundation for the design and analysis of the electromagnetic damper, contrives a hybrid excitation electromagnetic damper that satisfies the target request, designs a set of compound excitation electromagnetic damping loading control system whose control core is AT89C51 monolithic integrated circuit, analyses the electric circuit part, and carries on the experimental test to this set of electric circuits. Finally it debugs this electromagnetic damping loading system, this system satisfies the target request proposed.

论文提出了一个全新的加载测试系统种类，该加载系统是在阻尼器工作原理基础上，利用电动机拖动阻尼器运转，从而阻尼器产生一个与运动方向相反的阻尼力矩，该力矩作用在电动机上实现对电动机加载测试；同时，论文在一般电磁阻尼器基础上提出了一种新型的可调式复合励磁电磁阻尼器结构，该种阻尼器的工作特性在一定范围内可进行调节；论文分析了电磁阻尼器的工作原理和结构特点，运用电磁场理论分析推导了电磁阻尼器的涡电流密度公式，分析了涡电流在转子杯内的分布图，并对阻尼力矩计算方法进行了研究，建立了电磁阻尼器的数学模型，分析了电磁阻尼器结构参数和阻尼力矩之间的关系，对电磁阻尼器的设计和分析方法进行了研究，为电磁阻尼器的工程设计建立了理论基础；设计了满足技术指标要求的复合励磁电磁阻尼器和一套以AT89C51单片机为控制核心的复合励磁电磁阻尼加载控制系统，对该控制系统硬件电路各部分进行了分析和设计，对软件进行了设计，并对控制电路进行了试验调试，该系统满足所提出的加载指标要求。

Chip on Flex, a new generation package technology has been developed vigorously, in the drive of electronics miniaturizing and development of Liquid Crystal Display, which becomes one of the main package of the drive integrated circuit of LCD, PDP, etc.

在电子产品小型化、液晶显示电子产品高速发展的驱动下，新一代封装技术COF(Chip On Flex或Chip On Film)的发展也随之蓬勃起来，它已经成为LCD、PDP等平板显示器驱动IC的一种主要封装方式。

In order to be able to drive three separated speed controllers I wanted to be able to isolate the output stages of the controllers to prevent possible unpredictable high current loops between circuits, this also allows us to run one or multiple batteries safely so I experimented with some designs, The opto isolator device (4N35) can be inserted at various strategic parts of the circuit and in fact it is often at the front end at the receiver input but I chose to isolate just the output stage as I will be adding the other channel circuitry to the same receiver and battery eliminator circuit voltage rails.

在为了能够驱动器3分离速度控制器，我想能够隔离输出阶段的控制器，以防止可能出现难以预料的高电流环路之间的电路，这也使我们能够运行一个或多个电池安全，使i试行了一些设计，光电隔离器装置（ 4n35）可以插入各种战略的部分电路，并在事实上它往往是在前端，在接收器输入，但我选择了孤立刚输出阶段，因为我会加入其他渠道电路，同时接收器和电池消除电路的电压轨。

Based on these, the single phase converter system is studied in detail, including the selection of the main circuit scheme, the formation of Sine-wave Pulse- width Modulation signal, the design of the drive and protection circuit of IGBT, and the design of high frequency transformer. Finally, the simulation software is employed to test the effect. And the result is satisfactory.

在此基础上，本文主要对电能质量控制稳定器所需的DC/AC控制电源进行了详细研究，包括主电路方案的选择、SPWM波的生成、IGBT的驱动和保护电路、高频变压器的设计以及闭环电压控制原理，最后进行了输出电压的计算机仿真分析，结果是令人满意的。

On 13 December 1973, however, I went to a volcano overlooking Clermont-Ferrand in central southern France. I went more to get a breath of fresh air than to take a drive in my car. My legs were itching after a full year following the races from circuit to circuit, almost always living on four wheels, so to speak.

一九七三年十二月十三月，我独自驾车前往法国克莱蒙菲朗的火山，此行主要目的在兜风，只想呼吸新鲜空气，终年累月连续不断的赛车活动，正是所谓的只靠四个轮子过日子，如今则极度渴望能用双脚走路。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。