基于JAVA的网上花店（毕业设计）

非线性模型预测控制：理论和算法 图书 Nonlinear Model Predictive Control: Theory and Algorithms，Grüne Lars, Pannek Jürgen

本书为大学物理学的配套代码，每一部分都精心选取和编制了10个范例，共有140个范例。每个范例都按传统物理学的方法，用高等数学进行解析，进而结合图片对物理内容做出详细的说明。程序中将物理内容和例题以范例的形式提出来，进行解析和图示，包含大量的曲线、曲面和动画等可视化例程。此代码可按操作直接运行，对深刻学习物理和形象化理解物理规律很有帮助，让物理不再是刻板而枯燥的文字和公式。

（转）上海交大 计算电磁课程笔记， 做的十分详细，对相关基础理论学习很有帮助~

最好的DDS、PSD、TGA缩略图预览插件，支持常见的格式预览及转换

LTE资源分配，小区间干扰协调的Matlab源码，使用了SCME信道模型，利用此模型建立LTE资源分配的仿真环境，是项目中写出来的代码，很值得一看，参考

HFSS的915MHz微带天线设计仿真微波DA|专注于微射抓硬件工程师的培www.mweda.com提供最专业的ADS、HSS培训课程指标要求。若进一步考虑引入阻抗匹配馈线对天线谐振频率的影响,根据之前已仿真的结果,将贴片辐射元长度调整为74.2mm时,天线在915MHz频段表现出最佳的性能,如图3、图4所示。图1侧边馈电矩形微带贴片天线模型Armo CaponeXY Plot 1LP LIPE-田2天线模型仿真结果1(S1)Am秀 OpinionRadiation Paten 1P unnc s以nommretrtaa图3天线模型仿真结果( Directivity)Armo CorporaonXY Plot 1LP_LhoFood Sre台 urpim upet500图4天线模型仿真结果2(S1)微波DA|专注于微射抓硬件工程师的培www.mweda.com提供最专业的ADS、HSS培训课程3结论从上述仿真结果可知,选择介电常数44厚度5mm的介质基板材料,贴片辐射元尺寸为998mm74.2mm,四分之一波长阻抗匹配变换器尺寸为47.3mm×3.7m时,天线中心谐振频率在915MHz附近,工作频率点辐射主瓣E面波瓣宽度63:=84°,H面波瓣宽度θ3s=97°,天线增益Gain=325(dB)(辐射效率η=0.5),回波损耗S1=-31.77(dB)(WSWR=1.05),阻抗匹配良好,系统带宽B4=1.5%(以S11≤-14dB标准为参考),天线主平面尺寸18.2cmx13.2cm,天线各项设计指标达到预定的工程设计要求。本文所讨论的采用软件仿真验证与优化的方式相比传统实物制作并测试的方式,极大地缩减了现代天线从设计到调整实现所需的时间和成本,在工程设计上将有着广泛的应用。[参考文献][1] Stutzman Warren L, Thiele Gary A. Antenna Theory and Design( Second Edition)[M]. Beijing POST TELECOM PRESS2006,[2] Bahl I J, Bhartia P.微带天线[M].北京:电子出版社,1984[3]谢拥军,刘莹,李磊HFSS原理与工程应用[M].北京:科学出版社,2009[4]张均,刘克诚张贤铎.微带天线理论与工程M].北京国防工业出版社,198[5]钟顺时微带天线理论与应用[M].西安:西安电子科技大学出版社,1991[6]宋旭亮矩形微带天线设计与阻抗匹配网络[D].大连:大连海事大学,2008【贵任编辑:刘长青】Simulation and Verification of 915 MHz Microstrip Antenna Design Based on HFSSWU Zhi-xiong WANG HongFujian Polytechnic of Information Technology, Fuzhou, Fujian, 350003, China)Abstract: This paper introduces the processes of engineering design and simulation verification of the rectangle microstrip patch antenna working in 915 MHz Frequency by using the computer electromagnetic simula-tion software HFSS. The authors first estimate the designing parameters through the classical transmission linetheory, and then follow the steps of modeling and simulation on the software. Finally, get best results for the de-signing by optimal adjustment, while the antenna achieves its best performance indexes in the condition givenout beforeKey words: HFSS; microstrip antenna; antenna design; electromagnetic simulation8袋R足①A皆揉本队、八年轻积累m寺注于做被。射频。研件工程师的培养微波网视频培训教程推荐微波网成立于年底,并于翌年与易迪拓培训合并,专注于微波、射频和硬件⊥程师的培养,现已发展成为国内最大的微波射频和无线通信人才培养基地先后与人民邮电出版社、电子工业出版社合作出版了多本专业图书,成功推出了多套微波射频经典培训课程和等软件的使用培训课程,广受工程技术学员的好评,帮助数万名工程师提升了专业技术能力。客户遍布中兴通讯、研通高频、埃威航电、国人通信等多家国内知名公司,以及台湾工业技术研究院、永业科技、全一电子等多家台湾地区企业。示皿中文视频培训课程套装ANSYS LIFSS国内最全面和专业的培训教程套装,包含套视频教程和本教材,李明洋老师讲解;结合最新工程案例,视频操作FSs培訓程罄裴演示,让学习不再难。购买套装更可超值赠送个月免费学习答疑,让您花最少的成本,以最快的速度自学掌握【点击浏览详情】两周学会中文视频教程李明洋主讲,视频同步操作演示,直观易学。课程从零训起,通过两周的课程学习,可以帮助您快速入门、自学掌握真正做到让学习不再难…【点击浏览详情】微波器件仿真分析实例中文视频教程进阶培训课程,中文视频,通过十个仿真设计工程应用实例,带您更深入学的实际应用,掌握高级设置和应用技巧…【点山浏览详情】天线设计入门中文视频教程是天线设计的王者,该教程全面解析了天线的基础知识天线设计流程和详细操作设置,让天线设计不再难…【点击浏览详情】雷达散射截面分析中文视频教程全面剖析了如何使用仿貞计算各种目标物体的雷达散射截面),包括:单站双站和宽频【点击浏览详情】了解详情,请查看微波网(微REDA黄沫气形队、年好验积m可m专于做被,射频,录件工程斯养微波射频测量仪器培训课程套装合集测试仪器培训课程套装搞射频微波,不会仪器操作怎么行!矢量网终分析仪、频谱仪、取+书最+提专手E示波器、信号源是微波射频工程师最常用的测量仪器。该培训套装集合了直观的视频培训教程和详尽的图书教材,旨在帮助您快速熟悉和精通矢网、频谱仪、示波器等仪器的操作…【点微波EDA员wwww.nwra.com击浏览详情】学习培训课程套装AD学习调课程套装心吧口国内最全面和权威的培训教程,详细讲解了在微波射频电路、通信系统和电磁仿真设计方面的应用。课程是山具有多年使用经验的资深专家讲解,结合工稈实例,直观易学;能计您在最短的时间内学会,并把真正应用到研发工作中去…【点击浏览详情】我们的课程优势※成立于2004年,一直专注于射频工程师的培养,行业经验丰富,更了解您的需求※视频课稈、既能达到现场培训的效果,又能免除您舟车劳顿的辛苦,学习工作两不误※经验丰富的一线资深专家主讲,结合实际工程案例,直观、实用、易学※更多实用课程,欢迎登陆我们的官方网站或者登陆我们的官方淘宝店0A|-专注于微波、射频、硬件工程师的培养,址

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

该程序实现了Turbo码的编解码，可以达到论文中仿真图里的良好性能，Turbo码在实际中应用广泛，改程序具有很大实用价值

使用MATLAB软件中的simulink模块，进行RBF神经网络PID控制仿真，实测成功！！

此程序是用verilog编写的完整的基2FFT，即快速傅里叶变换。程序很详细，有部分解释说明使程序明白易懂。