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ARMA模型的完整程序代码
本程序是一个完整的ARMA模型的识别、参数估计以及预测的代码,编写语言简单易懂,适合初学者
- 2020-12-06下载
- 积分:1
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s7-1500 与TIA博途软件使用指南
西门子官方推荐图书,值得详细观看,会给入门者和需要提高的人很大帮助。
- 2021-05-06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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斑马ZEBRA ZPL指令打印所需SMT.ZEBRA.dll以及中文打印FNTHEX32.DLL
该资源包含斑马打印帮助类ZebraPrinter的SMT.ZEBRA.DLL以及打印中文所需的FNTHEX32.DLL。
- 2020-11-27下载
- 积分:1
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无线衰落信道的建模与仿真研究
根据无线电波传输的有关理论,本文研究了无线衰落信道模型,完成了一种基于正弦和的衰落信道建模设计,并对已有的瑞利衰落模型进行完善。本文首先分析了无线移动信道的重要特征及各种衰落作用的机理,并在此基础上进行了数学建模,接着阐述了该模型的软件实现过程并给出部分实验结果,然后针对己有的模型进行优化,最后给出了部分测试结果。通过测试表明,两个衰落信道均能够实时模拟窄带信道条件下实际无线通信信道的主要特性,所介绍的瑞利信道模型的主要特点是灵活性强,适用范围广。无线移动信道复杂多变,对它进行深入的研究有利于减少信道衰落对通信系统的影响,改善通信质量。
- 2021-05-06下载
- 积分:1
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基于BP神经网络的高斯模糊图像复原方法
基于BP神经网络的高斯模糊图像复原方法,结合BP神经网络的良好非线性逼近功能,复原高斯模糊图像,较传统复原方法更优
- 2020-11-27下载
- 积分:1
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使用Verilog设计CPU
使用Verilog设计CPU 学习怎么设计CPU哦!!!!!!!!!!!!
- 2020-12-02下载
- 积分:1
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AWR仿真 支节匹配器 阻抗变换器
用AWR仿真单、双直接匹配器 阻抗变换器 功分器。功能齐全
- 2020-12-03下载
- 积分:1
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MIL视频目标跟踪官方源码(MATLAB与C++两种版本同时包含,可运行)及论文原文
视频目标跟踪领域经典论文MIL(Robust Object Tracking with Online Multiple Instance Learning)对应的源码及论文原文(源码包含MATLAB代码和C++代码两个版本)。官方页面上目前已经不再提供源码支持,这是本人以前下载的官方源码,现特此分享供网友学习研究用。压缩包文件清单:1. gsoc11_tracking-master.zip2. MilTracker-V1.0.zip3. MilTrack_matlab_v1.0.rar4. MilTrack_matlab_v1.0_runnable_and_with_comment
- 2020-12-05下载
- 积分:1
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simplorer_maxwell联合仿真实例
simplorer_maxwell联合仿真实例 方法 实例
- 2020-12-11下载
- 积分:1