由andriod Studio开发的一款大学生兼职招聘App

【实例简介】本文档讲述了集群的搭建步骤，flume的安装及配置，kafka集群配置，flink集群配置、hbase的安装、opentsdb数据库的安装以及各个组件的连接运行可视化

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

单相PWM整流器仿真，仿真环境Matlab2014a，电压外环，电流内环，交流侧单位功率因数，直流电压稳定。

快速傅里叶变换是应用最广泛的一种谐波检测方法，但直接利用快速傅里叶变换进行谐波检测存在较大的误差，影响谐波分析结果的准确性。通过加汉宁窗及插值修正算法可以改善计算谐波频率、相位和幅值的准确度。简述了电力系统谐波检测非同步采样加汉宁窗插值算法的原理，并采用巴特沃斯低通滤波器滤除高频噪声。MATLAB仿真结果表明，加汉宁窗插值算法具有检测精度好，实现简单的优点。

利用获得的三个不同角度的偏振图像用公式计算求得偏振度图像、偏振角图像及斯托克斯各分量图像。

matlab基础程序，主要是关于双基地MIMO雷达基本数据结构模型及其matlab实现，双基地MIMO雷达多目标的定位和多运动目标的跟踪的matlab实现

【实例简介】matlab 语言，可以得到很好的分类效果，值得下载哦

本资源为Cuk电路的建模与控制及其仿真，内有说明文档，详细介绍了Cuk电路的建模过程，得到了Cuk电路传递函数，还介绍了电压单闭环的计算过程，闭环参数的计算，闭环效果良好，并且进行了仿真，内有simulink仿真，需要用matlabR2016B及以上版本打开。不知道怎莫加积分，5积分有点便宜了。。这个资料！

干货！这是本人基于光滑粒子流体动力学做的一个杯中水的模拟，比较成功！两年的sph学习不容易，今天特意拿出来与你们分享——sph方法的编程核心技巧！

信道估计的MSE性能比较,阐述了几种经典算法仿真性能的对比