高清電子書(shū)-C++ Primer Plus, 第6版英文版 1438頁(yè)Learning C++ is an adventure of discovery, particularly because the language accommodates several programming paradigms, including object-oriented programming, generic programming, and the traditional procedural programming.The fifth edition of this book described the language as set forth in the ISO C++ standards, informally known as C++99 and C++03, or, sometimes as C++99/03. (The 2003 version was largely a technical correction to the 1999 standard and didn’t add any new features.) Since then, C++ continues to evolve.As this book is written, the international C++ Standards Committee has just approved a new version of the standard.This standard had the informal name of C++0x while in development, and now it will be known as C++11. Most contemporary compilers support C++99/03 quite well, and most of the examples in this book comply with that standard. But many features of the new standard already have appeared in some implementations, and this edition of C++ Primer Plus explores these new features. C++ Primer Plus discusses the basic C language and presents C++ features, making this book self-contained. It presents C++ fundamentals and illustrates them with short, to-the-point programs that are easy to copy and experiment with.You learn about input/output (I/O), how to make programs perform repetitive tasks and make choices, the many ways to handle data, and how to use functions.You learn about the many features C++ has added to C, including the followi
標(biāo)簽： C++
上傳時(shí)間： 2022-02-19
上傳用戶(hù)：trh505
CPCI_E標(biāo)準(zhǔn)規(guī)范 CompactPCI? Express SpecificationThe documents in this section may be useful for reference when reading the specification. The revision listed for each document is the latest revision at the time this specification was published. Newer revisions of these documents may exist, so refer to the newest revision. Many of these documents are referenced throughout this specification. Refer to the newest revision of the document unless a specific revision is referenced. ? PCI Express Base Specification 3.0. PCI Special Interest Group (PCI-SIG). ? PCI Express Card Electromechanical (CEM) Specification 3.0. PCI Special Interest Group (PCI-SIG). ? PCI Express to PCI/PCI-X Bridge Specification, Rev. 1.0. PCI Special Interest Group (PCI-SIG). ? PCI Express Jitter White Paper. PCI Special Interest Group (PCI-SIG). ? PCIe Rj Dj BER White Paper. PCI Special Interest Group (PCI-SIG). ? PHY Electrical Test Specification for PCI Express Architecture. PCI Special Interest Group (PCI SIG). ? System Management Bus (SMBus) Specification, Version 2.0. Smart Battery System Implementer’
標(biāo)簽： CPCIE
上傳時(shí)間： 2022-02-23
上傳用戶(hù)：
基于FPGA設(shè)計(jì)的相關(guān)論文資料大全 84篇用FPGA實(shí)現(xiàn)FFT的研究 劉朝暉 韓月秋 摘 要 目的 針對(duì)高速數(shù)字信號(hào)處理的要求，給出了用現(xiàn)場(chǎng)可編程門(mén)陣列(FPGA)實(shí)現(xiàn)的 快速傅里葉變換(FFT)方案.方法 算法為按時(shí)間抽取的基4算法，采用遞歸結(jié)構(gòu)的塊浮點(diǎn)運(yùn) 算方案，蝶算過(guò)程只擴(kuò)展兩個(gè)符號(hào)位以適應(yīng)雷達(dá)信號(hào)處理的特點(diǎn)，乘法器由陣列乘法器實(shí) 現(xiàn).結(jié)果 采用流水方式保證系統(tǒng)的速度，使取數(shù)據(jù)、計(jì)算旋轉(zhuǎn)因子、復(fù)乘、DFT等操作協(xié) 調(diào)一致，在計(jì)算、通信和存儲(chǔ)間取得平衡，避免了瓶頸的出現(xiàn).結(jié)論 實(shí)驗(yàn)表明，用FPGA 實(shí)現(xiàn)高速數(shù)字信號(hào)處理的算法是一個(gè)可行的方案. 關(guān)鍵詞 離散傅里葉變換； 快速傅里葉變換； 塊浮點(diǎn)運(yùn)算； 可編程門(mén)陣列 分類(lèi)號(hào) TP39； TN957.511 Implementation of FFT with FPGA Technology Liu Zhaohui Han Yueqiu (Department of Electronics Engineering, Beijing Institute of Technology, Beijing 100081) Abstract Aim To propose a scheme for implementing FFT with FPGA in accor-dance with the requirement for high speed digital signal processing. Methods The structure of FPGA and requirement of system were considered in the experiment, radix-4 algorithm of DIT and recursive structure were adopted. The group float point arithmetic operation was used in the butterfly and the array multiplier was used to realize multiplication. Results The pipeline pattern was used to ensure the system speed, it made fetching data, calculating twiddle factor, complex multiplication and D
標(biāo)簽： fpga
上傳時(shí)間： 2022-03-23
上傳用戶(hù)：
對(duì)某四輪獨(dú)立驅(qū)動(dòng)電動(dòng)汽車(chē)輪轂電機(jī)進(jìn)行研究,設(shè)計(jì)一種永磁無(wú)刷直流電機(jī)控制器.以STM32F103RBT6芯片為基礎(chǔ),對(duì)電機(jī)驅(qū)動(dòng)電路、采樣電路和保護(hù)電路分別進(jìn)行硬件設(shè)計(jì)與分析;同時(shí),采用模塊化軟件設(shè)計(jì)方案,對(duì)該控制器的軟件系統(tǒng)進(jìn)行升級(jí).實(shí)驗(yàn)驗(yàn)證表明:所設(shè)計(jì)的電機(jī)控制器能使電機(jī)響應(yīng)迅速、轉(zhuǎn)速穩(wěn)定、無(wú)超調(diào),且電動(dòng)車(chē)動(dòng)力輸出性能良好.A permanent magnet brushless direct current motor controller was designed by studying the hub motor of a four-wheel independent drive electric vehicle.Based on STM32 F103RBT6 chip,the hardware design and analysis of motor drive circuit,sampling circuit and protection circuit were carried out respectively.At the same time,modular software design scheme was adopted to upgrade the software system of the controller.Experimental results show that the designed motor controller can ensure the motor fast response,stable speed,no overshoot,and good power output performances.
標(biāo)簽： 電動(dòng)汽車(chē) 永磁無(wú)刷直流電機(jī)
上傳時(shí)間： 2022-03-26
上傳用戶(hù)：qingfengchizhu
以AT89S52單片機(jī)為控制核心,采用電容降壓技術(shù),Buck電路拓?fù)?PWM驅(qū)動(dòng)模塊和功率器件散熱設(shè)計(jì),通過(guò)高速的數(shù)據(jù)采集、主功率輸入輸出模塊和控制模塊,設(shè)計(jì)一種新型智能車(chē)載充電器.在充電過(guò)程中,通過(guò)負(fù)脈沖瞬間放電實(shí)現(xiàn)對(duì)鉛酸蓄電池的再生修復(fù),提高電池的有效容量,延長(zhǎng)使用壽命.該充電器體積小、速度快、效率高、可靠性好.With AT89S52 single chip computer as the control core,a new type of intelligent car-carried charger was designed by using capacitance step-down technology,Buck circuit topology,PWM driving module and power device heat dissipation design,through high-speed data acquisition,main power input and output module and control module.In the charging process,the regeneration and repair of lead-acid batteries are realized by instantaneous discharge of negative pulse,which improves the effective capacity of batteries and prolongs their service life.The charger has the advantages of small size,fast speed,high efficiency and good reliability.
標(biāo)簽： 車(chē)載充電器
上傳時(shí)間： 2022-03-27
上傳用戶(hù)：
在半導(dǎo)體制冷技術(shù)的工作性能及其優(yōu)缺點(diǎn)研究的基礎(chǔ)上,設(shè)計(jì)了以單片機(jī)為核心控制元件,以TEC1-12706為執(zhí)行元件的半導(dǎo)體制冷溫度控制系統(tǒng)。采用高精度分段式PID控制算法配合PWM輸出控制的方法實(shí)現(xiàn)溫度控制;選擇數(shù)字傳感器DS18B20為溫度檢測(cè)元件,還包含1602液晶顯示模塊、按鍵調(diào)整輸入模塊和H橋驅(qū)動(dòng)模塊等。實(shí)際測(cè)試表明,該系統(tǒng)結(jié)構(gòu)簡(jiǎn)單易行,操作方便,工作性能優(yōu)良,同時(shí)針對(duì)該系統(tǒng)專(zhuān)門(mén)設(shè)計(jì)的溫控算法,使半導(dǎo)體制冷器能更好地適應(yīng)不同工況而充分發(fā)揮其制冷制熱工作特性。Based on the study of the performance and advantages and disadvantages of thermoelectric cooler(TEC)technology,a thermoelectric cooling temperature control system with single-chip microcomputer as the core control element and TEC1-12706 as the executive element was designed. High precision piecewise PID control algorithm combined with PWM output control method is adopted to realize temperature control. The digital sensor DS18B20 is selected as the temperature detection element. It also includes 1602 LCD module,key adjustment input module and H bridge drive module. The actual test shows that the system has simple structure,convenient operation and excellent performance. Meanwhile,the temperature control algorithm specially designed for the system can make the semiconductor cooler better adapt to different working conditions and give full play to its refrigeration and heating characteristics.
標(biāo)簽： 半導(dǎo)體 溫度控制系統(tǒng)
上傳時(shí)間： 2022-03-27
上傳用戶(hù)：
設(shè)計(jì)功率MOSFET驅(qū)動(dòng)電路時(shí)需重點(diǎn)考慮寄生參數(shù)對(duì)電路的影響。米勒電容作為MOSFET器件的一項(xiàng)重要參數(shù),在驅(qū)動(dòng)電路的設(shè)計(jì)時(shí)需要重點(diǎn)關(guān)注。重點(diǎn)觀(guān)察了MOSFET的開(kāi)通和關(guān)斷過(guò)程中柵極電壓、漏源極電壓和漏源極電流的變化過(guò)程,并分析了米勒電容、寄生電感等寄生參數(shù)對(duì)漏源極電壓和漏源極電流的影響。分析了柵極電壓在米勒平臺(tái)附近產(chǎn)生振蕩的原因,并提出了抑制措施,對(duì)功率MOSFET的驅(qū)動(dòng)設(shè)計(jì)具有一定的指導(dǎo)意義。When designing the drive circuit of power MOSFET,the influence of parasitic parameters on the circuit should be concerned.As an important parameter of MOSFET device,Miller capacitance should be considered in the design of drive circuit.The variation of gate voltage,drain source voltage and drain source current during the turn-on and turn-off of MOSFET were observed.The influences of parasitic parameters such as Miller capacitance and parasitic inductance on drain source voltage and drain source current were analyzed.The reasons of gate voltage oscillation nearby Miller plateau were analyzed,and the restraining measures were put forward.This research was instructive for the drive design of power MOSFET.
標(biāo)簽： mosfet
上傳時(shí)間： 2022-04-02
上傳用戶(hù)：默默
目的:自主研制一款超聲手術(shù)刀電源控制系統(tǒng),以減少能量的消耗,維持手術(shù)刀的正常溫度。方法:對(duì)超聲換能器在諧振附近的等效電路建立模型,并設(shè)計(jì)基于數(shù)字信號(hào)處理(DSP)的超聲手術(shù)刀的硬件控制系統(tǒng)。結(jié)果:經(jīng)對(duì)電源控制系統(tǒng)的電路和工作性能測(cè)試,生成的電流和電壓的有效值等參數(shù),能夠及時(shí)調(diào)整電源的頻率,并達(dá)到預(yù)期的功能指標(biāo),使超聲手術(shù)刀工作在諧振狀態(tài)。結(jié)論:以DSP為核心設(shè)計(jì)的超聲手術(shù)刀電源控制系統(tǒng),測(cè)試指標(biāo)均能夠達(dá)到預(yù)期的要求,能夠使系統(tǒng)在諧振狀態(tài)下工作。Objective: To independently develop a power control system of ultrasonic scalpel so as to reduce the energy consumption and maintain the normal temperature of ultrasonic scalpel. Methods: In this paper, the model of equivalent circuit of ultrasonic transducer nearby syntony was built up, and the hardware control system of ultrasonic scalpel based on digital signal processing(DSP) was designed. Results: Through testing the circuit and work performance of power control system, the series of parameters such as effective value and so on which were produced by this system could adjust frequency of power source in time and attain anticipative functional indicator, and it took the ultrasonic scalpel to work in syntonic situation. Conclusion: The tested indicators of power control system of ultrasonic scalpel based on the kernel design of DSP can attain anticipative requirement, and can take this system to work in syntonic situation.
標(biāo)簽： 數(shù)字信號(hào)處理 超聲手術(shù)刀 電源控制
上傳時(shí)間： 2022-04-03
上傳用戶(hù)：bluedrops
以單片機(jī)控制A/D轉(zhuǎn)換器TLC549為例,對(duì)A/D轉(zhuǎn)換器的主要技術(shù)指標(biāo)進(jìn)行了分析研究,在Proteus平臺(tái)下,完成了A/D轉(zhuǎn)換電路的構(gòu)建,采用器件工作時(shí)序方式進(jìn)行程序編寫(xiě),借助仿真圖表、虛擬儀器等工具對(duì)A/D轉(zhuǎn)換的數(shù)據(jù)進(jìn)行測(cè)量并對(duì)失調(diào)誤差、增益誤差、微分非線(xiàn)性、積分非線(xiàn)性和轉(zhuǎn)換時(shí)間等重要參數(shù)進(jìn)行了詳細(xì)分析。結(jié)果表明:使用Proteus軟件可對(duì)A/D轉(zhuǎn)換過(guò)程進(jìn)行定性分析,將抽象的A/D轉(zhuǎn)換器技術(shù)指標(biāo)直觀(guān)化、形象化展現(xiàn)出來(lái),有助于學(xué)生更好地理解A/D轉(zhuǎn)換過(guò)程。The main technical indicators of A/D converter were analyzed and studied with an example from A/D converter TLC2543 which is controlled by using SCM.It was completed the construction of the A/D converter circuit under the Proteus software.The programming based on the operation sequence of the chip is put forward.With the aid of the simulation tools such as virtual instrument,simulation charts provided by Proteus,the important parameters of circuit such as offset error,gain error,differential nonlinearity(DNL),integral nonlinearity (INL) and conversion time are analyzed detailedly.Simulation results show that the A/D conversion process can be qualitatively analyzed and visualized the abstract indicators of A/D.The system can help students better to understand the SCM conversion process.
標(biāo)簽： proteus 單片機(jī) 模數(shù)轉(zhuǎn)換
上傳時(shí)間： 2022-04-04
上傳用戶(hù)：
隨著電磁閥在工業(yè)和日常應(yīng)用的增多,其功耗越來(lái)越被人們所重視。通過(guò)對(duì)電磁閥驅(qū)動(dòng)電路的研究,設(shè)計(jì)一套電磁閥節(jié)能驅(qū)動(dòng)電路。不僅提高了電磁閥的響應(yīng)時(shí)間,更重要的是降低了功耗,使電磁閥由工作在大電流狀態(tài)下,變成大電流啟動(dòng)小電流維持的工作狀態(tài)。減少了由電流過(guò)大引起的電磁閥線(xiàn)圈過(guò)熱,增加了電磁閥的安全性。The power consumption of an electromagnetic valve is drawing increasingly more attentiori as it is widely used in industrial production and daily life. In this study, an energy - saving driving circuit of electromagnetic valves was designed. It can make an electromagnetic valve to start with a high current while work with a low current; thereby the power consumption can be reduced. Besides, it can shorten the response time of an electromagnetic valve and improve the security of the valve.
標(biāo)簽： 電磁閥 節(jié)能驅(qū)動(dòng)電路
上傳時(shí)間： 2022-04-16
上傳用戶(hù)：
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