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matlab孤立点提取函数
用matlab写的，用于孤立点提取的函数
- 2020-12-03下载
- 积分：1
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英飞凌IGBT驱动培训资料
在电力电子装置中的一个重要组成部分,输入连接到控制电路的PWM信号输出端，输出连接到装置各IGBT的门极和发射极，将装置中的控制电路产生的数字PWM信号进行隔离传输和电平转换和功率放大,实现控制电路对IGBT进行开通和关断动作的控制，从而实现装置的功率变换功能。InfineontechnologiesIGBT Gate Drive: Power Suppliesa Gate driving voltage for IGBT+15Vturn-on is normally +15VDriver>□1a Gate driving voltage for IGBTOVturn-off can be oV or negativeWith Single Power Supply5V to-15V)a Negative gate driving voltage+15Vhelps IGBt switch off fasterremain in off state but itDriverneeds dual power suppliesOVWhether to use oV or negativegate driving voltage depends15VWith Dual Power Supplieson the requirement on costZH Liang - Al APperformance05Dec2003agefor internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: InterfaceOpto-couplers is commonly used as interfacingdevices for applications where both signaltransmission and potential isolation are requiredOpto-couplers offers reliable isolation between IGBT(high-potential)& micro-controller(low-potential)Opto-couplers has long signal delay(us)and isexpensiveIsolation +VDpCCMicroDrivercontrollerZH Liang - Al AP05Dec2003Page 6for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Half-bridge DriveStandard configuration: 2 drivers, 2 power supplies, 2 opto-couplersAdvantages: standard, reliableDisadvantages: using opto-couplers, higher system costIsolation +VDDlCC1DriverCC1MicrocontrollerDD2+VCC2DriverCC2ZH Liang - Al AP05Dec2003Page 7for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Half-bridge DriveIn half-bridge IGBT drive, opto-couplers offer two functions(1)safety isolation &(2) shifting the potential of the gatesignal from uc potential to high-side potentialIf safety isolation between IGBT& micro-controller is notneeded, then"Level Shift" can replace opto-coupling andrealize function(2)OptoHigh-sideHigh-sidecouplerDriverIGBTMicro-Opto-LoW-sideLow-sidecontrollercouplerDriverIGBTZH Liang - Al AP05Dec2003Page 8for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive Level shiftI FeaturesHVc(600V/1200V)沿PULSERFILTERShort Signal DelayPULSE■Cost- effectiveGEN■ No Safety Isolationevel Shift Half-bridge DriverI BenefitHigh-side““°IGBTO Saving Opto-couplersLevel(lower system costShiftMicro● Wider range ofcontrollerLevelLow-side■■■■■直■口m留■Switching FrequencyShiftIGBT(higher flexibility)ZH Liang - Al AP05Dec2003Page 9for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: CLTNEWO CLT-Coreless Transformer (for signal transmissionu Coils(Primary Secondary Side)realized on SiliconO Short Signal Delay (allowing high or low switching frequencyu Lower Cost(compared to 1200V level-shift driver日 Safety IsolationCLT Half-bridge DriverHigh-sideCLT Single DriverIGBTCLTMicro-controllerCLTIGBTMicro-controllerLoW-sideIGBTZH Liang - Al AP05Dec2003agefor internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Boot-strapBoot-strap circuit includes only a diode and a capacitora In half-bridge drive, the boot-strap circuit can replace the high-sidepower supply and make single-supply operation possibleWhen the low-side IGBT (or FWD)is on, the diode is forwardbiased and the capacitor is charged by the low-side power supplyvia the low-side IGBT and stores the energyWhen the low-side IGBt(and FWD)is OFF, the diode is reversebiased and blocks the dc-bus voltage to protect the low-sidecircuit. Meanwhile, the capacitor supplies energy to the high-sidedriverThe boot-strap capacitance should be high enough to keep thesupply voltage stable Capacitance needed can be calculatedbased on the working conditions and device parametersZH Liang - Al AP05Dec2003agefor internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Boot-strap circuitConventional2心菲*|■3 high-side power supplies■1|oW- side power supplyUsing boot-strap circuit心体心心●3 diodes& capacitorso 1 low-side power supplyFeaturesa Diode: ultra-fast recoverya Capacitor: general-purposed ITAa Dependent on low-side IGBTBenefitsSaving 3 PS(transformer cost)22ZH Liang - Al AP05Dec2003Reducing wiring connectionPage 12for internal use onlyInfineon Technologies Asia Pacific
- 2020-12-11下载
- 积分：1
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matlab画ROC曲线
使用matlab画ROC曲线，% predict - 分类器对测试集的分类结果% ground_truth - 测试集的正确标签,这里只考虑二分类，即0和1% auc - 返回ROC曲线的曲线下的面积
- 2020-12-02下载
- 积分：1
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综合Canny法与小波变换的边缘检测方法
提出一种Canny法与小波变换相结合的边缘检测方法.首先,对源图像进行小波分解,在不同分解层上对高频子图像用小波模极大法进行边缘检测,对低频子图像用Canny法进行边缘检测,然后采用一定的融合规则将这两个边缘图像融合在一起,得到一幅完好的边缘图像.这种边缘检测方法结合了小波变换法和 Canny法的优点,对用不同方法得到的两种边缘信息进行融合,从而有效地抑制了噪声,保留了连续、清晰的边缘.实验结果表明,这种结合方法要优于单独使用Canny法或小波变换法.
- 2020-12-01下载
- 积分：1
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红外声光报警电路毕业设计
【实例简介】大学毕业做的一个简单的毕业设计，基于51单片机的红外对射感应的声光报警电路设计，包含所需的元件库文件，原理图文件，PCB文件。通过毕业设计验证。
- 2021-11-12 00:32:29下载
- 积分：1
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Matlab+OpenCV相机标定详细步骤
1、使用matlab现有工具箱进行相机标定，相机校正，立体标定；2、采用OpenCV现有函数进行相机标定，并分析其优缺点；3、一些注意事项；
- 2020-12-06下载
- 积分：1
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二维弹性波数值模拟matlab
能够实现二维的弹性波数值模拟，是MATLAB程序。可以消除数值频散。
- 2020-12-11下载
- 积分：1
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利用python写入.ply文件、三维点云写入ply文件、并用meshlab打开
该代码利用python（numpy）生成ply文件，并将三维点云数据写入ply文件。生成的ply文件可以直接用meshlab打开查看点云。这个积分太高了，我重新上传了一份，链接：https://download.csdn.net/download/weixin_41457494/11438608
- 2020-12-07下载
- 积分：1
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利用灰色理论进行数据预测GM（1，1）预测和残差GM（1，1）预测
自己毕业时候编的一个利用灰色理论进行数据预测的软件包括GM（1，1）预测和残差GM（1，1）预测
- 2020-12-05下载
- 积分：1
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C#开发无人机地面站
上位机实现了串口通信，基本功能包括发送数据，hex、文本数据接收显示等。可按照通信协议接收下位机数据并进行和校验后显示，实时显示包括三轴加速度、角速度、欧拉姿态角等参数信息。实时显示各数据波形，同时可以自由选择需要的显示的数据通道。软件使用VS2008 C#开发，在win7下测试一切正常。
- 2020-06-17下载
- 积分：1
