-
ELM---matlab代码
关于elm进行回归预测的分析，使用方法很简单，只需输入训练集和测试集就可以进行elm预测了，预测的结果会保存在相应的.mat文件里，详细操作请看代码里的操作说明。资源里有调用函数ELM.m，执行函数guidence.m文件，作为调用实例，直接运行就可以了，简单易懂，汉语注释说明等。运行结果会直接输出测试集的MAE, RMSE, MAPE, DISTAT这几个统计量
- 2020-04-23下载
- 积分：1
-
多载波宽带无线通信技术
pdf格式，我自己加了书签哦，可以方便的查找书中的内容
- 2020-12-11下载
- 积分：1
-
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
-
SVM实现MNIST数据集分类
本代码为matlab实现的支持向量机模式识别算法，对MNIST数据集进行三种样本分类，如果电脑内存够大，可以实现更多的类别分类，另外exclass是对随机的两个样本分类，也可以参考，exmuticlassall为对MNIST数据集分类，注释掉的代码也可以实现随即三样本分类并作图。
- 2020-12-06下载
- 积分：1
-
三相桥式全控整流电路 simulink 仿真模型 mdl
【实例简介】在工业中应用最为广泛的一种整流电路，其实质是一组共阴极与一组共阳极的三相半波可控整流电路的串联。习惯将其中阴极连接在一起的三个晶闸管(VT1、VT3、VT5)称为共阴极组;阳极连接在一起的三个晶闸管VT4、VT6、VT2)称为共阳极组。三相整流变压器采用Dy联结，由于共阳极组在电源正半周导通，流经变压器二次绕组的是正向电流，共阴极组在电源负半周导通，流经变压器二次绕组的是反向电流，因此一个周期中，变压器绕组中没有了直流磁动势，有利于减小变压器磁通、电动势中的谐波。此外，习惯上希望晶闸管按从1~6的顺序导通，为此将晶闸管按图示的顺序编号，即共阴极组中与a、b、e三相电源相接的三个晶闸管分别为VT1、VT3、VT5，共阳极组中与a、b、e三相电源相接的三个晶闸管分别为VT4、VT6、VT2。三相桥式全控整流电路必须用双窄脉冲或宽脉冲触发，其移相范围为0°~120°，最大导通角为120°。它主要用于电压控制要求高或要求逆变的场合。
- 2021-11-16 00:38:15下载
- 积分：1
-
Qt用串口读单片机温度数据画动态波形曲线 全场最低分 超实用
全场最低分----->>>>>>>>>>>>>>>>>>>>>.....Qt通过串口读单片机温度数据画动态波形曲线Qt通过串口读单片机温度数据画动态波形曲线Qt通过串口读单片机温度数据画动态波形曲线
- 2020-11-27下载
- 积分：1
-
PingFangSC-Regular
精简版的简体PingFangSC-Regular 字体。包括3500个常用字体和字母数字
- 2020-12-08下载
- 积分：1
-
全能电子地图下载器1.9.5完善版
此版本为注册版（提供内存注册机，由于采用了内存注入技术，部分杀毒软件会报毒。但绝不是病毒，请放心使用。）绝非破解版，保证软件功能未做修改!使用方式：1、安装名字叫MapTileDownloader_Ultimate_1.9.5的文件2、将注册机和imaps.exe复制到软件安装目录（将安装目录内原始的imaps.exe文件改个名字为imapsod.exe）3、运行注册机4、点击“获取注册码”5、注册机调用imaps.exe并读出注册码，复制注册码到弹出的注册窗口，然后点注册，然后弹出软件窗口，直接关闭窗口；6、将imapsod.exe改回原始名字imaps.exe，
- 2020-12-12下载
- 积分：1
-
STM32F103标准库 旋转编码器测速和读取脉冲
硬件接线：A+ GPIOB_Pin_6B+:GPIOB_Pin_7A-:GPIOC_Pin_6B-:GPIOC_Pin_7串口波特率:9600设置好这些转动电机就可以在串口上看到当前速度和位置，希望对初学者有一定帮助
- 2020-06-26下载
- 积分：1
-
USB_HID_LIB
这个压缩包里面有3个文件：hidapi.dll，hidapi.h，hidapi.lib。Qt工程直接包含头文件，pro文件添加库就可以使用里面的方法
- 2021-05-06下载
- 积分：1
