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； 可編程門陣列 分類號(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：
針對(duì)嵌入式產(chǎn)品程序更新問(wèn)題,提出了一種基于IAP技術(shù)的STM32單片機(jī)在線固件升級(jí)方案,設(shè)計(jì)了STM32單片機(jī)最小系統(tǒng)硬件電路和USB轉(zhuǎn)串口通信電路,并給出了Bootloader程序、APP程序、PC上機(jī)程序的實(shí)現(xiàn)流程.實(shí)驗(yàn)結(jié)果表明,該方案具有簡(jiǎn)單實(shí)用、穩(wěn)定性高、維護(hù)成本低和設(shè)備使用效率高的特點(diǎn),適用于嵌入式產(chǎn)品升級(jí).For the problem of updating embedded products program,an online firmware upgrade scheme of STM32 single chip microcomputer based on IAP technology is proposed.This scheme not only elaborates the principle of IAP technology in detail but also provides the design of the minimum system hardware circuit of STM32 MCU,the design of USB for serial communication circuit,and the implementation flow of Bootloader program,APP program and PC program.The experiment results show that the scheme is simple,practical and highly stable.In addition,it can be used to actual embedded product upgrading,significantly reducing maintenance costs and improving the efficiency of equipment.
上傳時(shí)間： 2022-03-25
上傳用戶：
對(duì)某四輪獨(dú)立驅(qū)動(dòng)電動(dòng)汽車輪轂電機(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 永磁無(wú)刷直流電機(jī)
上傳時(shí)間： 2022-03-26
上傳用戶：qingfengchizhu
文章提出了一種基于AT89S51單片機(jī)的智能家居系統(tǒng)的設(shè)計(jì),該系統(tǒng)具有室內(nèi)煤氣以及煙霧的檢測(cè)、家庭室內(nèi)防盜等功能。文章詳細(xì)分析了系統(tǒng)的總體設(shè)計(jì),詳盡分析并設(shè)計(jì)了煤氣傳感器模塊、煙霧傳感器模塊、人體紅外感應(yīng)傳感器模塊、報(bào)警模塊等各硬件部分,并利用PROTUES軟件進(jìn)行了系統(tǒng)仿真。仿真結(jié)果證明:系統(tǒng)具有成本低、效率高、操作方便等優(yōu)點(diǎn),達(dá)到了預(yù)期設(shè)計(jì)的效果。This paper presents the design of an intelligent home system based on AT89S51 microcontroller.The system has the functions of detecting indoor gas and smoke,guarding against theft in the home,and so on.The overall design of the system is analyzed in detail.The gas sensor module,smoke sensor module,human infrared sensor module,alarm module and other hardware parts are analyzed and designed in detail,and the system simulation is carried out using PROTUES software.The simulation results show that the system has the advantages of low cost,high efficiency,convenient operation and so on,and achieves the expected design effect.
上傳時(shí)間： 2022-03-28
上傳用戶：
為設(shè)計(jì)高效率、低損耗的PFC電路,本文基于UCC28019進(jìn)行電路設(shè)計(jì)。以UCC28019輸出的PWM波形來(lái)控制Boost升壓斬波為核心電路,使電路中的電容交替地充放電、電感交替的儲(chǔ)存和釋放能量,最后實(shí)現(xiàn)在輸入AC20V~24V電壓情況下穩(wěn)定輸出DC38V。測(cè)試結(jié)果表明,系統(tǒng)實(shí)現(xiàn)效率為95%左右,電壓調(diào)整率小于1%,電源功率因數(shù)0.99。交流輸入電壓為19.0-25.8 V時(shí),輸出直流電壓穩(wěn)定性較好,電感無(wú)明顯嘯叫且紋波小,具有一定的帶負(fù)載能力和實(shí)用性。In order to design the PFC circuit with high efficiency and low loss,this paper designs the circuit based on UCC28019.The PWM waveform output by UCC28019 is used to control boost chopper as the core circuit,which alternately charges and discharges capacitors,stores and releases energy by inductors,and finally achieves stable output of DC38 V under the input voltage of AC20 V~24 V.The test results show that the system achieves about 95% efficiency,the voltage adjustment rate is less than 1%,the power factor is 0.99,and the AC input voltage is 19.0-25.8 V.The output DC voltage stability is good,the inductance has no obvious whistle and the ripple is small,so it has certain load capacity and practicability.
標(biāo)簽： ucc28019 pfc 電路設(shè)計(jì)
上傳時(shí)間： 2022-04-03
上傳用戶：
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：bluedrops
本文首次設(shè)計(jì)并驗(yàn)證了基于macom三合一芯片設(shè)計(jì)的光模塊電路,該電路旨在提供一種滿足SFF-8472中規(guī)定的數(shù)字診斷功能的低成本SFP+模塊。電路采用激光器驅(qū)動(dòng)、限幅放大器、控制器以及時(shí)鐘恢復(fù)單元集成的單芯片,在保證高精度數(shù)字診斷功能基礎(chǔ)上,實(shí)現(xiàn)了低成本高可靠的特點(diǎn)。該電路在光接收接口組件與激光器驅(qū)動(dòng)和限幅放大器單元的限幅放大器部分之間接入濾波器來(lái)提高模塊的靈敏度及信號(hào)質(zhì)量。在控制器單元的數(shù)字電位器的引腳上采用外加電阻的方式避免出現(xiàn)上電不發(fā)光的故障問(wèn)題。該研究結(jié)果為下一代SFP-DD光模塊設(shè)計(jì)與開(kāi)發(fā)工作,奠定了一定的理論與實(shí)踐基礎(chǔ)。This paper designs and validates the optical module circuit based on the MACOM Trinity chip for the first time.This circuit aims to provide a low-cost SFP module which meets the digital diagnosis function specified in SFF-8472.The circuit uses a single chip integrated with laser driver,limiting amplifier,controller and clock recovery unit.On the basis of ensuring high precision digital diagnosis function,it achieves the characteristics of low cost and high reliability.The circuit connects a filter between the optical receiving interface module and the limiting amplifier part of the laser driver and limiting amplifier unit to improve the sensitivity and signal quality of the module.The pin of the digital potentiometer in the controller unit is equipped with an external resistance to avoid the problem of power failure.The research results lay a theoretical and practical foundation for optical module design in high-speed data center.
上傳時(shí)間： 2022-04-03
上傳用戶：
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,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、微分非線性、積分非線性和轉(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：
為了提高超高頻RFID系統(tǒng)中閱讀器在低信噪比的情況下仍具有較高的識(shí)別能力,提出一種基于FPGA系統(tǒng)結(jié)合軟件無(wú)線電方法實(shí)現(xiàn)超高頻RFID射頻前端電路方案。超高頻射頻識(shí)別系統(tǒng)必須符合EPC Class 1generation 2標(biāo)準(zhǔn),所設(shè)計(jì)的電路系統(tǒng)以Xilinx公司的XC6SLX16-2CSG324FPGA芯片為硬件基礎(chǔ),將數(shù)字基帶調(diào)制解調(diào)和中頻濾波電路在FPGA系統(tǒng)中設(shè)計(jì)實(shí)現(xiàn),重點(diǎn)闡述了射頻前端電路的設(shè)計(jì)結(jié)構(gòu)、AD/DA轉(zhuǎn)換電路,以及數(shù)字濾波器的設(shè)計(jì)。實(shí)驗(yàn)結(jié)果表明,所設(shè)計(jì)的超高頻RFID閱讀器簡(jiǎn)化了前端電路系統(tǒng)結(jié)構(gòu),提升了穩(wěn)定性,增強(qiáng)了抗干擾能力。該電路系統(tǒng)在信噪比較低的情況下,能夠較好地實(shí)現(xiàn)915MHz頻率的射頻接收和發(fā)送。In order to improve the reader UHF RFID system still has a higher ability to identify,in the case of low signal-to-noise ratio.The UHF RFID systems must comply with EPC Class 1 generation 2 standard.In this paper,the design of the circuit system based on Xilinx＇s XC6SLX16-2CSG324 FPGA chip,and presents UHF RFID RF front-end circuit with software radio based on FPGA system.Digital baseband modem and IF filter circuit is designed and implemented in the FPGA system,and focused on designing the structure of the RF front-end circuit,AD/DA conversion circuits,and digital filter.Experimental results show that the UHF RFID reader de...
標(biāo)簽： 915mhz 超高頻 rfid 閱讀 射頻 前端 電路 設(shè)計(jì)
上傳時(shí)間： 2022-04-17
上傳用戶：shjgzh
介紹一種萬(wàn)能模擬信號(hào)輸入采集電路,可以同時(shí)支持電壓、電流、熱電偶、熱電阻等常見(jiàn)的工業(yè)類型信號(hào),方便后級(jí)電路的測(cè)量。該研究成果通過(guò)不斷優(yōu)化和完善,已成功應(yīng)用到了中控儀表的新產(chǎn)品中。The paper introduces a collection circuit of universal signal input. The circuit support voltage, current, thermocouple, thermal resistance and other common industrial type signal. The research results, which has been continuous optimized and improved, has been successfully applied to the new production of Zhejiang Supcon Instrument Co., Ltd.
標(biāo)簽： 采集電路
上傳時(shí)間： 2022-04-21
上傳用戶：slq1234567890
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