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技术资料 二维连续傅里叶变换
二维连续傅里叶变换
例2.2
figure(1); %建立图形窗口1
[u,v] = meshgrid(-1:0.01:1); %生成二维频域网格
F1 = abs(sinc(u.*pi));
F2 = abs(sinc(v.*pi));
F=F1.*F2; %计算幅度频谱F=|F(u,v)|
surf(u,v,F); % ...
技术资料 电子元器件系列知识—IGBT
一、IGBT 驱动1 驱动电压的选择IGBT 模块GE 间驱动电压可由不同地驱动电路产生。典型的驱动电路如图1 所示。图1 IGBT 驱动电路示意图Q1，Q2 为驱动功率推挽放大，通过光耦隔离后的信号需通过Q1，Q2 推挽放大。选择Q1，Q2 其耐压需大于50V 。选择驱动电路时，需考虑几个因素。由于IGBT 输入电容较MOSFET 大，因此IGBT 关断时 ...
技术资料 基于MSP430单片机及FPGA的简易数字示波器
数字示波器功能强大,使用方便,但是价格相对昂贵。本文以Ti的MSP430F5529为主控器,以Altera公司的EP2C5T144C8 FPGA器件为逻辑控制部件设计数字示波器。模拟信号经程控放大、整形电路后形成方波信号送至FPGA测频,根据频率值选择采用片上及片外高速AD分段采样。FPGA控制片外AD采样并将数据输入到FIFO模块中缓存,由单片机进行频 ...
技术管理 Writing Your First ASP Application ( Quick Start ) (Page 1 of 8 ) There are many tutorials out th
Writing Your First ASP Application ( Quick Start )
(Page 1 of 8 )
There are many tutorials out there that show you how to program in ASP. Some of them are good, and some are bad. Some of them are downright terrible. In any case, you ve read a bit about ASP and now you are ready to build your first ...
matlab例程 The XML Toolbox converts MATLAB data types (such as double, char, struct, complex, sparse, logical)
The XML Toolbox converts MATLAB data types (such as double, char, struct, complex, sparse, logical) of any level of nesting to XML format and vice versa.
For example,
>> project.name = MyProject
>> project.id = 1234
>> project.param.a = 3.1415
>> project.param.b = 42
becomes with str=xml_forma ...
单片机开发 CAN1.c and CAN2.c are a simple example of configuring a CAN network to transmit and receive data o
CAN1.c and CAN2.c are a simple example of configuring a CAN network to
transmit and receive data on a CAN network, and how to move information to
and from CAN RAM message objects. Each C8051F040-TB CAN node is configured
to send a message when it s P3.7 button is depressed/released, with a 0x11
...
单片机编程 基于AT89S52的机载电气盒测试仪的设计
飞机电网故障时，机载电气盒必须在延迟时间内切断电网，保护机载设备。采用AT89S52设计的电气盒测试仪能够测试电气盒保护功能，测量延迟时间。实际应用结果表明，该测试仪具有测量准确、可靠性高、成本低等优点。
Abstract:
 The helicopter-electrical-box must shut off the helicopter power，protect the equip ...
Linux/Unix编程 The Little Green BATS is the first and so far only Dutch team in the 3D simulation league. We are a
The Little Green BATS is the first and so far only Dutch team in the 3D simulation league. We are a group of graduate students from the department of AI at the University of Groningen, The Netherlands. Our team name is derived from the fact that the first 3D agents in the league were balls and from ...
单片机编程 用C51实现无功补偿中电容组循环投切的算法
介绍了用单片机C 语言实现无功补偿中电容组循环投切的基本原理和算法，并举例说明。关键词：循环投切;C51;无功补偿中图分类号： TM76 文献标识码： BAbstract: This paper introduces the aplication of C51 in the controlling of capacitorsuits cycle powered to be on and off in reactive compensation.it illustrate ...
技术资料 基于单片机的智能温控风扇系统的设计与实现
本设计是一个温度控制风扇系统,该系统采用单片机STC89C52进行控制。系统中的温度传感器DS18B20,可以对该系统设置温度,所设置的温度值保存在DS18B20温度传感器内部的E2ROM中,具有掉电保护功能,即使掉电之后,最后一次设定的温度值在E2ROM中不会丢失。设定温度时需设定高温与低温值,当系统正常工作时,系统会检测外部的温度情况 ...