uninstall the device in the "Computer Management" pannel.在設(shè)備管理器中卸載已有驅(qū)動(dòng)install PL2303-Prolific_DriverInstaller_v1200安裝壓縮包中的PL2303-Prolific_DriverInstaller_v1200restart your computer.重啟計(jì)算機(jī)
標(biāo)簽： pl2303 win10 驅(qū)動(dòng)
上傳時(shí)間： 2022-03-13
上傳用戶：jiabin
M.NT68676.2A is a monitor control board, which is suitable for Asia-Pacific market. It can supportLED/LCD panels which resolution is up to 2048×1152.M.NT68676.2A can synchronize with computer automatically. Synchronization requires thesynchronous signal which horizontal and vertical sync are separated.M.NT68676.2A can support dynamic contrast control, headphone input and Digital volume controlsimultaneously.
標(biāo)簽： 樂華驅(qū)動(dòng)板
上傳時(shí)間： 2022-03-13
上傳用戶：kent
本系統(tǒng)采用電動(dòng)機(jī)電樞供電回路串接采樣電阻的方式來實(shí)現(xiàn)對小型直流有刷電動(dòng)機(jī)的轉(zhuǎn)速測量。該系統(tǒng)主要由二階低通濾波電路,小信號(hào)放大電路、單片機(jī)測量顯示電路、開關(guān)穩(wěn)壓電源電路等組成。同時(shí)自制電機(jī)測速裝置,用高頻磁環(huán)作為載體,用線圈繞制磁環(huán),利用電磁感應(yīng)原理檢測電機(jī)運(yùn)行時(shí)的漏磁,將變化的磁場信號(hào)轉(zhuǎn)化為磁環(huán)上的感應(yīng)電流。用信號(hào)處理單元電路將微弱電信號(hào)轉(zhuǎn)化為脈沖信號(hào),送由單片機(jī)檢測,從而達(dá)到準(zhǔn)確測量電機(jī)的速度的要求。In this system, the sampling resistance of armature power supply circuit is connected in series to measure the speed of small DC brush motor. The system is mainly composed of second-order low-pass filter circuit, small signal amplifier circuit, single-chip measurement and display circuit, switching regulated power supply circuit and so on. At the same time, the self-made motor speed measuring device uses high frequency magnetic ring as the carrier, coil winding magnetic ring, and electromagnetic induction principle to detect the leakage of magnetic field during the operation of the motor, which converts the changed magnetic field signal into the induced current on the magnetic ring. The weak electric signal is transformed into pulse signal by signal processing unit circuit, which is sent to single chip computer for detection, so as to meet the requirement of accurate measurement of motor speed.
標(biāo)簽： 直流電動(dòng)機(jī)
上傳時(shí)間： 2022-03-26
上傳用戶：
以倉庫智能改造為背景,主要介紹單片機(jī)和上位機(jī)之間通信網(wǎng)絡(luò)和通信協(xié)議的選擇,MODBUS協(xié)議通信指令和功能碼使用,重點(diǎn)闡述了基于RS-485總線的MODBUS通信協(xié)議在上位機(jī)和單片機(jī)之間的串行通信,實(shí)現(xiàn)上位機(jī)對單片機(jī)設(shè)備的遠(yuǎn)程控制和信息采集的功能。Based on the intelligent warehouse transformation as the background,mainly introduces between MCU and PC communication network and the choice of communication protocol,instruction and the function code using the MODBUS protocol communication,expounds the MODBUS communication protocol based on RS-485 bus serial communication between PC and single chip microcomputer,PC remote control of single chip computer equipment and the function of information collection.
標(biāo)簽： RS-485總線 modbus 單片機(jī)
上傳時(shí)間： 2022-03-26
上傳用戶：
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)一種新型智能車載充電器.在充電過程中,通過負(fù)脈沖瞬間放電實(shí)現(xiàn)對鉛酸蓄電池的再生修復(fù),提高電池的有效容量,延長使用壽命.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： 車載充電器
上傳時(shí)間： 2022-03-27
上傳用戶：
靜電放電（Electrostatic Discharge，ESD）是構(gòu)成集成電路可靠性的主要因素之一，存在于生產(chǎn)到使用的每一個(gè)環(huán)節(jié)，并成為開發(fā)新一代工藝技術(shù)的難點(diǎn)之一，近年來，對ESD的研究也因而越來越受到重視，仿真工具在ESD領(lǐng)域的應(yīng)用使得ESD防護(hù)的研究變得更為便利，可大幅縮短研發(fā)周期然而，由于ESD現(xiàn)象復(fù)雜的物理機(jī)制，極端的電場及溫度條件，以及ESD仿真中頻繁的不收斂現(xiàn)象，都使得FSD的仿真變得極為困難本文詳細(xì)闡述了ESD的來源、造成的危害以及如何測試集成電路的防靜電沖擊能力，并基于 Sentaurus軟件，對ESD防護(hù)器件展開了的分析、研究，內(nèi)容包括1）掌握ESD保護(hù)的基本理論、測試方法和防護(hù)機(jī)理2）研究了工藝仿真流程的步驟以及網(wǎng)格定義在工藝仿真中的重要性，并對網(wǎng)格定義的方法進(jìn)行了探討3）硏究了器件仿真流程以及器件仿真中的物理模型和模型函數(shù)，并對描述同一物理機(jī)制的的各種不同模型展開對比分析.主要包括傳輸方程模型、能帶模型、各種遷移率退化模型、雪崩離化模型和復(fù)合模型4）研究了雙極型晶體管和可控硅（Silicon Controlled rectifier，SCR）防護(hù)器件的仿真，并通過對仿真結(jié)果的分析，研究了ESD保護(hù)器件在ESD應(yīng)力作用下的工作機(jī)理關(guān)鍵詞：靜電放電；網(wǎng)格；器件仿真；雙極型晶體管；可控硅
上傳時(shí)間： 2022-03-30
上傳用戶：
在傳統(tǒng)智能小車驅(qū)動(dòng)電路設(shè)計(jì)中,較多考慮使用直流電機(jī)還是步進(jìn)電機(jī),電機(jī)功率、能耗等性能參數(shù)。使用具有armCortexM4內(nèi)核的STM32嵌入式平臺(tái)控制四輪的4個(gè)直流電機(jī)。文章基于PWM技術(shù)及PID算法,對四輪進(jìn)行精準(zhǔn)地速度、轉(zhuǎn)向及啟停控制,實(shí)驗(yàn)表明此小車具有優(yōu)越各種地形適應(yīng)能力。In the traditional intelligent car drive circuit design,DC motor or stepping motor,motor power,energy consumption and other performance parameters are considered.The four DC motors with four wheels are controlled by STM32 embedded platform with arm Cortex M4 kernel.Based on the PWM technology and PID algorithm,the accurate ground speed,steering,and start-stop control of the four wheels are carried out.The experiment shows that the vehicle has the superior adaptability to all kinds of terrains.
標(biāo)簽： stm32 智能小車 控制系統(tǒng)
上傳時(shí)間： 2022-04-02
上傳用戶：
以單片機(jī)控制A/D轉(zhuǎn)換器TLC549為例,對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A/D轉(zhuǎn)換的數(shù)據(jù)進(jìn)行測量并對失調(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A/D轉(zhuǎn)換過程進(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,有助于學(xué)生更好地理解A/D轉(zhuǎn)換過程。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：
為解決移相全橋電路驅(qū)動(dòng)及相角控制問題,設(shè)計(jì)了一種數(shù)字控制的移相全橋驅(qū)動(dòng)電路.以TPL521為光耦隔離、IR2110為柵極驅(qū)動(dòng)芯片.由DSP產(chǎn)生PWM信號(hào),經(jīng)過光耦隔離和邏輯電路后送至IR2110進(jìn)行相角控制.文章對IR2110驅(qū)動(dòng)電路原理進(jìn)行分析及參數(shù)進(jìn)行設(shè)計(jì),對TMS320F28335進(jìn)行設(shè)置并給出部分代碼.實(shí)驗(yàn)結(jié)果表明：通過TMS320F28335可產(chǎn)生的不同相角的PWM波形,滿足了移相全橋?qū)Σ煌嘟强刂频囊?In order to solve the problem of phase-shifted full-bridge circuit driving and phase angle control,a digitally controlled phaseshifted full-bridge driving circuit was designed. TPL521 optocoupler isolation,IR2110 gate driver chip. PWM signals are generated by the DSP and sent to the IR2110 for phase angle control after optocoupler isolation and logic circuits. This text carries on the analysis to the principle of IR2110 drive circuit and parameter design,set up and give out some code to TMS320F28335. The experimental results show that the PWM waveforms with different phase angles generated by TMS320F28335 can meet the requirements of phase-shifted full-bridge control for different phase angles.
上傳時(shí)間： 2022-05-03
上傳用戶：zhanglei193
Algebra, Topology, Differential Calculus, and Optimization Theory For Computer Science and Machine Learning一本數(shù)學(xué)大全書，由Jean Gallier and Jocelyn Quaintance合著。
標(biāo)簽： 機(jī)器學(xué)習(xí) 數(shù)學(xué)
上傳時(shí)間： 2022-05-05
上傳用戶：默默
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