查询词典 buffer circuit

The thesis contains five chapters. The first chapter summarizes the development and research of switched reluctance drive, discusses the main research direction, and explains the main work in this paper. In chapter 2, hardware system which includes the design of power converter and various control circuit is discussed. TMS320LF2407 DSP is used to design the hardware circuits of SRM control system, and design details including the current detection, position sensing, fault protection, speed detecting, keyboard and display etc. are provided. Because of the full use of the abundant peripheral resources of DSP, it comes to the aim simplifying the circuit structure and heightening the reliability. In chapter 3, the application of neural network on SRM control system is introduced, a new the application of neural network and the method of sampling is proposed and a simulation system based on Matlab/Simulink is established. Chapter 4 discusses the routine designing issue. Because the modularized programming method is adopted, and multi-interrupt processing technique is used, operation efficiency of the control software is highly raised. At last, the foregoing SRM control system is tested. Speed adjustment is realized, and other targets on the research and design of SRM control system are reached, which establishes a good foundation for further research.

本文共分五章，第一章概述了开关磁阻电机调速系统(Switched Reluctance Drive，简称SRD)及其发展和研究现状，论述了其主要研究方向，并说明了本文的主要工作；接下来的一章主要讨论了SRM的硬件系统，主要包括功率变换器的设计和各种控制电路的设计，本文以TMS320LF2407为核心设计了开关磁阻电机控制系统硬件电路，给出了包括电流检测、位置检测、故障保护、测速电路及键盘和显示电路等部分电路的详细设计，充分利用了DSP的丰富外设资源，达到了简化电路结构、提高运行可靠性的目的；第三章介绍了人工神经网络在开关磁阻电机控制系统中的应用，提出了一种新的应用方式(利用GPFN神经网络调节PI参数)以及如何采取样本，搭建了基于Matlab/Simulink的仿真系统；在第四章中，讨论了开关磁阻电机控制软件的设计，采用模块化编程方法，采用基于多中断的控制程序，提高了控制软件的效率；最后，对所设计的开关磁阻电机控制系统进行了实验，实现了电机调速，达到了开关磁阻电机控制系统研究和设计的预期目标，为更近一步研究打下了基础。

The Company mainly operates and acts as the agent for the following products including:frequency conversion cabinet,frequency converter,soft starter,automated control system,series of low-voltage circuit breaker,contactor,control relay,protective relay,knife switch,isolating switch,capacitor,dual power switching unit,low-voltage mutual inductor,low-voltage fuse,high-voltage vacuum circuit breaker,high-voltage mutual inductor,high-voltage load switch,high-voltage fuse,microcomputer integrated protection device and components and parts including automatic control products, Lights,button,terminal,electric meters and electromechanical products including pump,valve fan,motor,voltage transformer,wires and cables.

公司主要经营及代理的产品有：变频柜、变频器、软启动器、自动化控制系列及系列低压断路器、接器、控制继电器、保护继电器、刀开关、隔离开关、电容器、双电源切换装置、高压真空断路器、高低压互感器、高压负荷开关、高低压熔断器、微机综合保护装置及自动化控制产品、信号灯、按钮、端子、电度表等元器件及水泵、阀门、风机、电机、变压器、电线电缆等机电产品约1000多个品种、20000余种常用规格。

The Company mainly operates and acts asthe agent for the following products including:frequency conversioncabinet,frequency converter,soft starter,automated controlsystem,series of low-voltage circuit breaker,contactor,controlrelay,protective relay,knife switch,isolating switch,capacitor,dualpower switching unit,low-voltage mutual inductor,low-voltagefuse,high-voltage vacuum circuit breaker,high-voltage mutualinductor,high-voltage load switch,high-voltage fuse,microcomputerintegrated protection device and components and parts includingautomatic control products, Lights,button,terminal,electric metersand electromechanical products including pump,valvefan,motor,voltage transformer,wires and cables.

公司主要经营及代理的产品有：变频柜、变频器、软启动器、自动化控制系列及系列低压断路器、接器、控制继电器、保护继电器、刀开关、隔离开关、电容器、双电源切换装置、高压真空断路器、高低压互感器、高压负荷开关、高低压熔断器、微机综合保护装置及自动化控制产品、信号灯、按钮、端子、电度表等元器件及水泵、阀门、风机、电机、变压器、电线电缆等机电产品约1000多个品种、20000余种常用规格。

Applied extensively to knitting horizontal machine, needle trough cutting, printed circuit board, V trough cutting, integrated circuit cutting, spectacle frame, hinge shaping, hardware processing, watchcase and watchband processing, and high-performance optic fibre cable cutting.

广泛适用于针织横机针槽切割，印刷电路板V槽切割，集成电路切割，眼镜架、铰链成型，精密五金金属加工、手表表壳、表带加工，高性能光纤电缆切割。

After the lamb chops dinner,we made the circuit circuit of the old city walls.

并且我们在城墙上发现了一个故事，主环行圆周主孩子气的下巴。

After the lamb chops dinner,we made the circuit of the old circuit city walls.

这次环行环行的旅程花了我们 3 排骨环行个小时。

The luminescence power of semiconductor laser diode is tested after the radiator element of laser diode is made and the drive circuit is designed. Then, chaos mathematic model is introduced to produce deterministic class stochastic signal and C langrage program, which is based on the hardware circuit design of MSP430, is designed and on-line debugged to implement the dynamic stimulation effect and avoid the body adaptability with the duty cycle of chaos sequence. The duty cycle is adjusted and controlled to accomplish the reinforcing and reducing in moxibustion. At last, Average power of laser diode is tested under the conditions of different duty cycles and the waveforms are collected by applying virtual instrument.

在半导体激光器散热装置的特别制作及工作驱动电路的设计基础上，完成半导体激光器发光功率的测试，然后引入混沌数学模型方法来产生确定性的类随机信号，在 MSP430 单片机硬件电路设计的基础上，应用单片机 C语言进行程序设计并在线调试，实现传统灸法的动态刺激效果，采用混沌序列占空比信号消除人体适应性，调整和控制输出占空比的改变以达到灸疗的补泻手法的实现，最后对不同控制占空比情况下激光器输出的平均功率进行测试，完成工作波形的采集。

The pleunm anti-static insulated material housing prevents short circuit led by the contact of welding spot and the metal channel of word sign. At the same time, the circuit uses particular constant current design and lightning arrester. Silicon rubber leads between modules of anti-aging and anti-cracking guarantee the long-term work in bad environment of open area while the low resistance of lead reduces the affection to the emitting brightness of LED by voltage drop.

其外壳采用阻燃防静电绝缘材料，可防止 PCB焊点与金属字槽壳的接触而产生短路，同时电路采用独特恒流电路设计及雷电吸收装置，模组间连接线采用软硅橡胶导线，在恶劣的户外恶劣环境下长时间使用，导线不会老化脆裂，同时导线内阻比较小，降低压降对LED发光亮度的影响。

But disconnect the load and the output correctly, in the time, I fail to understand why it suddenly occurred to power does not output voltage may also be due to eircuit the power protection, since switching power supply does not have the problem, according to the circuit diagram check switching power supply external power supply module one by one, if the hinge-counter, discovered its signal line wrap wire close to counter one end of the triadha into the signal lines, causing a short circuit input line.

可是断开负载，其输出正常，在百思不得其解之时，笔者突然想到电源不能正常输出电压也有可能是由于负载短路使电源保护造成的，既然开关电源本身没有问题，按照电路图检查开关电源外围的供电模块逐一排查，当检查到折页计数器时，无意中发现其信号线外缠绕的钢丝线接近计数器的一端扎进了信号线中，造成输入线短路。

Combinational Logic design which based on the theory of Linear block code is the circuit map of Linear block code using AND-gate, OR-gate, Flip-flop and so on. VHDL design is the hardware description of the circuit map to make linear block code into realization.

组合逻辑电路设计，是根据线性分组编码理论，利用与非门、触发器等逻辑器件搭建起来的电路原理图；VHDL设计，是将线性分组编码理论通过用VHDL描述，实现其编码功能。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。