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Description: 用变压器+整流桥+滤波器+稳压器构成5v的直流电源，以此作为D/A转换器（DAC0832）的基准电压，用AT89C51+8155+键盘+LED的单片机小系统控制进入DAC0832的数字量达到数控的目的 -transformer rectifier bridge filter Regulators constitute 5v DC power supply, as D / A converters (DAC0832) voltage, AT89C51 8155 with the keyboard LED small SCM system control access to the figures amounted DAC0832 The purpose of NC
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Author: 万红军 |
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Description: 基于C8051F实现数字变压器,用C语言实现其控制思想,液晶,键盘都有.主要的是变压器控制思想.
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Author: 李林 |
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Description: 可程控数字电压表，基于8051f120的
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Author: lqdg21z |
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Description: 基于C8051F实现数字变压器,用C语言实现其控制思想,液晶,键盘都有.主要的是变压器控制思想.-C8051F-based digital transformer, using C language to achieve its ideological control, LCD, keyboard there. The main thing is thinking of transformer control.
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Author: 李林 |
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Description: 本文介绍了以T M S 3 2 0 L F 2 4 0 7 为核心 的 P M S M 伺服控制装置设计， 包括永磁同步电机的矢量控制方法， 以
及 D S P 及旋转变压器 一 一
数字转换器电路的硬件设计和积分分离 P I D 、 M ／ T 法测速的软件设计方法。实验
结果表明，该伺服装置达到了较高的速度 ／位置响应速度和控制精度-：A P M S M s e r v o d e v i c e b a s e d o n D S P T M S 3 2 0 L F 2 4 0 7 i s i n t r o d u c e d i n t h i s
p a p e r ． C o n t a i n i n g th e v e c t o r c o n t r o l m e t h o d
o f P M S M ， t h e c ir c u i t d e s i
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Author: 张国辉 |
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Description: 旋转变压器数字转换器AD2S83在伺服系统中的应用-Resolver digital converter AD2S83 in Servo System
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Author: 光全 |
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Description: 电力变压器是电网中的最重要的设备之一，利用它可以把不同电压的电网联结在一起，组成复杂的电网或庞大的电力系统，并在其中发挥着重要的作用；电力变压器的可靠性直接关系到电网能否安全、高效、经济的运行。由于变压器长期连续在电网中运行，不可避免地发生各种故障和事故，因而如何对电力变压器在运行中的故障进行诊断，已成为电力部门急需解决的问题。
IEC三比值法是电力变压器内部故障诊断的常用方法。IEC三比值法是经IEC审议后，在四比值法（即罗杰斯法）的基础上修改而得到的一种简化的新的比值方法，它是将变压器油裂解产生的CH4、H2、C2H6、C2H4、C2H2几种气体相互比较而得到一组数字编码，根据编码的不同组合可以分析得出变压器的各种故障类型。
IEC三比值是一种比较成熟的对电力变压器故障进行检测的方法，而且检测的精度相对较高，并不会象其他检测方法那样要求停机检测而影响变压器的工作，提高了电网的经济运行，也提高了工作的效率。因而，IEC三比值法在国际上得到广泛的应用。
在完成本次设计过程中，要求对电力变压器的内部故障进行广泛了解，并用VB语言对IEC三比值法进行故障诊断算法的程序设计，完成故障诊断模块和数据管理模块，实现变压器内部故障论断。
-Power transformer in the grid is one of the most important equipment, it can use the network of different voltage linked together, to form a complex network or large electric power system, and plays an important role in it the reliability of the power transformer is directly related to the power grid safe, efficient, economic operation. Because the transformer long-term continuous in operation of power grids, inevitably occurs a variety of failures and accidents, so how to power transformer in operation fault diagnosis, has become urgent to solve the problem of electric power sector.
IEC three ratio method is the electric power transformer fault diagnosis methods. IEC three ratio method is the IEC deliberation, in the ratio of four (Rodgers method) based on the modified and get a new simplified ratio method, it is the transformer oil cleavage to generate CH4, H2, C2H6, C2H4, C2H2 several kinds of gases are compared with each other and get a group of digital coding, according to enc
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Author: 王显 |
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Description: 现代通信系统和测试设备常常需要尽快地将模拟信号数字化，以便在数字域中完成信号
处理。但是，为模数转换器(ADC)设计变压器前端电路很有挑战性，特别是在高中频(IF)
的系统中。本文总结了5 个设计步骤，以帮助开发出最佳的ADC 前端-The modern communication systems and test equipment often requires expeditiously the analog signal is digitized, in order to perform signal processing in the digital domain. However, the front-end circuit for analog-to-digital converter (ADC) designed transformer is very challenging, especially in the high intermediate frequency (IF) system. This article summarizes the five design steps to help develop the best in front of the ADC
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Author: 李文宝 |
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Description: 旋转变压器数字转换芯片AD2S1210示例程序-The the rotary transformer digital conversion chip AD2S1210 sample program
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Author: 孙楚 |
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Description: X射线机控制源代码主要对高频微焦点牙科X线机的高频逆变技术、高频变压以及灯丝电路控制原理进行了编写研究。通过程序代码对于管电压以及管电流的控制，采用脉冲宽度调节方式（PWM）实现输出电压和功率的调节。X射线机控制程序通过硬件电路的AD采样经直流逆变、高频变压器、倍压整流形成数字电路经计算机编译得到单片机能够识别的二进制代码来控制机器，其成像极为清晰并且球管发射出的软射线得到了很好的抑制，降低了漏射线量，提高了成像效率，使常规X射线机的结构形状多样化，具有体积小、重量轻、低辐射（其辐射量、漏射线量仅为国家规定的百分之一），便于放置等特点。X射线机控制程序主要适用口腔门诊治疗前的检查，治疗过程中的效果对比，及治疗后的效果确定，对种植牙、根管治疗或微创手术患者带来极大的方便，是口腔门诊中不可或缺的软硬件设备。-X-ray machine control source code control principle of high-frequency inverter technology for high-frequency micro-focus dental X-ray machine, high frequency transformer, and filament circuit of the preparation of the study. By the program code for the tube voltage and tube current control, pulse width modulation (PWM) and to achieve the adjustment of the output voltage and power. AD sampling of the X-ray machine control program through the hardware circuit DC inverter, high frequency transformers, voltage doubler rectifier digital circuit is formed by the computer compiles the microcontroller can identify binary code to control the machine, its very clear imaging and bulb emits soft rays inhibition, reducing the amount of radiation leakage and improved imaging efficiency, diversification of structure and shape of the conventional X-ray machine, a small size, light weight, low-emissivity (radiation, radiation leakage was only one percent of the state regulations), easy to place charact
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Author: sam |
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Description: 嵌入式发电机-变压器装置数字保护实时监控系统的研究。详细描述了电力系统监控的发展与嵌入式监控的优越于重要性。-The Resreach of Monitor System in Digital Protection for Generator-Transformer Sets on Embedded RTOS
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Author: 远野瞬 |
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Description: 7.1 简单数字滤波器的MATLAB辅助设计和分析方法 7.2 微机继电保护算法的MATLAB辅助设计和分析方法 7.3 输电线路距离保护的建模与仿真 7.4 Simulink在变压器微机继电保护中的应用举例 7.5 输电线路故障行波仿真举例
-7.1 Simple digital filter MATLAB-aided design and analysis methods 7.2 microcomputer relay protection algorithm MATLAB-aided design and analysis methods 7.3 Transmission Line Distance Protection 7.4 Simulink modeling and simulation of the transformer relay protection Application Examples 7.5 Transmission Line Examples traveling wave fault simulation
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Author: 鱼摆摆 |
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Description: 大部分元件需要DIY，所以需要知道元件的参数。因为DIY的元件没有标称技术参数。比如，需要知道谐振器件、检波器件、天线、耳机、变压器等器件的电抗特性。其中，高频参数可以使用Q表解决问题，而低频参数Q表难以测定。为了解决这个问题，笔者认为LCR数字电桥能够胜任。
设计目标：
1、能够准确测量电抗器的L、C、R，精度优于0.5 ，如果进行人工逐档校准，精度优于0.3
2、取材容易，电路简洁，易于制作，成本应适当控制。使之具有更强的业余DIY价值及研究价值，并通过设计、DIY学习到LCR电桥的相关细节、原理。
本LCR表的基本特性
AD转换器的字数：约1000字，采用了过采样技术，有效分辨力约为2000字
测量方法：准桥式测定，测量原理类似于比例法测电阻。
主要测量范围：1欧至0.5兆欧，精度0.5 （理论），阻抗实测比对，均未超过0.3
有效测量范围：2毫欧至10兆欧，最小分辨力1毫欧
串联残余误差：2毫欧，低阻测量时此误差不可忽略
并联残余误差：50M欧，高阻测量时此误差不可忽略
Q值误差：±0.003（Q<0.5），Q/300（Q>2，相对误差，简易算法），其它按0.5 左右估算
D值误差：±0.003（D<0.5），D/300（D>2，相对误差，简易算法），其它按0.5 左右估算
注意：Q = 1/D-Most components require DIY, so you need to know the parameters element. DIY components because there is no nominal technical parameters. For example, the need to know the reactance characteristic resonant devices, detection devices, antenna, headphones, transformers and other devices. Among them, high-frequency parameters can use Q table to solve the problem, while difficult to measure low frequency parameter Q table. To solve this problem, I think LCR digital bridge capable.
Design goals:
1, it is possible to accurately measure the reactor L, C, R, precision better than 0.5 , if the file manually by calibration accuracy of better than 0.3
2, drawing easy circuit is simple, easy to make, cost should be properly controlled. So that it has more value and amateur DIY research value, and learn details about LCR bridge, the principle by design, DIY.
The basic features of the LCR table
AD converter Word Count: approximately 1000 words, using the oversampling technology, effective reso
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Author: 李星 |
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Description: 基于DSP的高精度旋转变压器轴角数字转换器
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Author: chenlaser888 |
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Description: 新型永磁同步电机控制用旋转变压器／数字转换器及其应用-A new type of resolver/digital converter for permanent magnet synchronous motor control and its application
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Author: 魏睿智 |
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Description: 大部分元件需要DIY，所以需要知道元件的参数。因为DIY的元件没有标称技术参数。比如，需要知道谐振器件、检波器件、天线、耳机、变压器等器件的电抗特性。其中，高频参数可以使用Q表解决问题，而低频参数Q表难以测定。为了解决这个问题，笔者认为LCR数字电桥能够胜任。((Most components require DIY, so you need to know the parameters element. DIY components because there is no nominal technical parameters. For example, the need to know the reactance characteristic resonant devices, detection devices, antenna, headphones, transformers and other devices. Among them, high-frequency parameters can use Q table to solve the problem, while difficult to measure low frequency parameter Q table. To solve this problem, I think LCR digital bridge capable. Design goals: 1, it is possible to accurately measure the reactor L, C, R, precision better than 0.5 , if the file manually by calibration accuracy of better than 0.3 2, drawing easy circuit is simple, easy to make, cost should be properly controlled. So that it has more value and amateur DIY research value, and learn details about LCR bridge, the principle by design, DIY. The basic features of the LCR table AD converter Word Count: approximately 1000 words, using the oversampling technology, effective reso))
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Author: 呵呵呵311 |
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