提出一種基于凌陽單片機的步進電機加減速的控制方法。采用凌陽科技推出的16位結(jié)構(gòu)工控單片機SPMC75F2413A為控制器，由Allegro公司生產(chǎn)的兩相步進電機專用驅(qū)動器件SLA7042M構(gòu)成步進電機的驅(qū)動電路，在傳統(tǒng)的3段直線加減速控制算法基礎(chǔ)上增加至7段S形曲線加減速過程，控制步進電機的啟動和停止。實驗結(jié)果表明，該控制方法克服了直線加減速中不連續(xù)、易造成系統(tǒng)沖擊的問題，整個系統(tǒng)實現(xiàn)柔性控制，電機啟動、停止連續(xù)性能提高30%。 Abstract: The method of controlled stepping motor is referred based on SPMC75F2413A MCU， which adopts the 16 knots SPMC75F2413A MCU as the controller. The special-purpose actuation chip SLA7042M of two stepping motor produced by Allegro Corporation constituted to actuation electric circuit. The purpose of increasing to seven section of S shape curve based on the traditional three sections of straight line is to control the start and stop process of stepping motor. The experimental results show that the control method solves easy to pull-out and overshot problems. The overall system realizes flexible control， and the performance of motor start or stop continuity is increased 30%
上傳時間： 2013-12-08
上傳用戶：jiangfire
實時時鐘是微機保護裝置的重要部件，在討論PCF8583結(jié)構(gòu)與功能的基礎(chǔ)上，提出采用dsPIC33F系列微處理器與串行I2C時鐘PCF8583的接口設(shè)計方案，給出了相應(yīng)的接口電路與軟件流程。該設(shè)計方案結(jié)構(gòu)簡單，可靠性高，開發(fā)周期短，具有一定的實用與參考價值。所設(shè)計的微機保護裝置已投入現(xiàn)場運行，效果良好。 Abstract: Real-time clock chip is an important part in microcomputer protection device.Based on discussing the structure and function of PCF8583，a new interface scheme which uses dsPIC33F microprocessor and serial clock chip（I2C）PCF8583is proposed.The method of the circuit design and the main software flow are introduced in this paper.The scheme has simple structure，higher reliability and shorter exploitation cycle，so has definite practicality or reference value.The microcomputer protection device has been put into operation with better effects.
標簽： 8583 PCF 串行時鐘 中的應(yīng)用
上傳時間： 2013-11-18
上傳用戶：Thuan
設(shè)計一種基于AT89C52的語音錄放系統(tǒng)，利用單片機、ISD2560語音錄放器件、麥克風、揚聲器等元器件實現(xiàn)硬件電路的設(shè)計，并利用C51高級語言設(shè)計ISD2560器件控制字的寫入和定時中斷程序。經(jīng)軟硬件調(diào)試，結(jié)果表明該系統(tǒng)錄放效果良好，具有一定的工程實用價值。 Abstract: Voice recording and playback system based on AT89C52is designed in this paper.Using the single-chip microcomputer，voice recording and playback chip ISD2560，microphone and speaker to realize the hardware circuit design.Writing ISD2560control words and timing interrupt procedures are designed by C51advanced language.Through the hardware and software test,voice recording and playback system play better voice,and this system has some engineering practical values.
上傳時間： 2013-10-20
上傳用戶：ywcftc277
MG3500SoC是支持H.264高清編解碼器的片上系統(tǒng)，內(nèi)部集成一個嵌入式ARM926處理器，支持高清H.264編解碼、MPEG鄄2解碼和JPEG編解碼。介紹了MG3500SoC的主要性能特點、引腳排列、主要接口功能及在DVR上的應(yīng)用，以及MG3500SoC及其周圍器件的硬件設(shè)計，提出了在設(shè)計中應(yīng)注意的問題。 Abstract: The MG3500System-on-Chip（SoC）is high definition（HD）H.264codec,including ARM926-EJ processor，H.264encoder/decoder，MPEG2decoder and JPEG/MJPEG encoder/decoder.The features,pin assignments，interfaces and the typical application of MG3500in DVR are introduced in this paper.The application hardware circuit between the MG3500SoC and peripheral device are given,the questions which the syetem design needs to pay attention are explained.
上傳時間： 2013-11-12
上傳用戶：elinuxzj
介紹了以AVR單片機ATmega16為核心，采用前端信號調(diào)理電路、程控增益放大器以及波形顯示LCD（GDM12864A）實現(xiàn)的一個簡易示波器。并給出該系統(tǒng)設(shè)計的硬件和軟件設(shè)計方案。 Abstract: Abstract:This paper introduces an easy digital storage oscilloscope based on the AVR microcontroller ATmega16,especially emphasizes on the software design and the hardware design which contains signal processing circuit,gain-programmed amplifier circuit and LCD’s interface circuit and so on.
上傳時間： 2013-10-13
上傳用戶：ccccccc
介紹了當前普通標記機控制系統(tǒng)現(xiàn)狀及其存在缺點，給出氣動標記機及相頻修正PWM模式的工作原理。采用ATmega16單片機和USB轉(zhuǎn)換RS232接口器件CH341T實現(xiàn)驅(qū)動控制系統(tǒng)與PC的實時通訊，標記控制系統(tǒng)可升級到USB接口。采用基于ATmega16的相頻修正PWM替換555振蕩電路產(chǎn)生的PWM，可直接通過軟件調(diào)整PWM信號。使用達林頓三極管TIP122替代直流繼電器驅(qū)動高頻電磁閥，使得電磁閥驅(qū)動電路簡單，成本低廉。該控制系統(tǒng)已成功應(yīng)用于氣動標記機。 Abstract: In this paper,the actuality and demerit of the common gas marking machine control systems are described.The operation principle of the gas marking machine and the phase and frequency correct PWM of ATmega16is introduced.The real-time communication between the driving control system and PC by CH341T which its function is translated USB to RS232is realized,the control systems is updated grade to USB interface.The PWM signal can be adjustable by software for the555surge circuit was substituted by the phase and frequency.The high frequency electromagnetic value’s driving circuit by DC relay is replaced by TIP122,therefore,the circuit is become simple and the cost cheap.The control systems has been widely used in gas marking machine.
標簽： ATmega 16 標記 控制系統(tǒng)
上傳時間： 2013-10-18
上傳用戶：1427796291
介紹了一種基于C8051F020單片機的多路壓力測量儀。該測量儀選用電阻應(yīng)變式壓力傳感器采集壓力信號，并經(jīng)放大電路處理后送入C8051F020單片機，再由C8051F020單片機內(nèi)部的A/D轉(zhuǎn)換器將采集到的壓力信號進行模數(shù)轉(zhuǎn)化，然后分別對數(shù)據(jù)進行存儲和顯示。該測量儀能測量6路壓力信號，并且各測量點都能單獨檢測和設(shè)置。由于采用了C8051F020單片機，簡化了硬件電路，增強了抗干擾能力，使得測量儀具有測量精度高，沖擊小等特點。 Abstract: A measurement apparatus for multi-channel pressure based on single chip microcomputer is introduced.It can measure 6 channels signal of the pressure，and the pressure measure points can be detection and located individually.The pressure signal sampling is obtained by resistor stress-type pressure sensors，the digital signals of 6 channels are collected through amplifying and adjustment circuit of pressure signals and internal integrated A/D converter of MCU.Finally，and it realizes the function to store and display data separately.C8051F020 was used to made hardware circuit simple，and it also enhanced the anti-interference ability.It features high precision and little impact.
上傳時間： 2013-11-16
上傳用戶：yare
為滿足礦井安全生產(chǎn)要求，介紹了一種以AT89C51單片機為主控器，對環(huán)境空氣的溫度、有毒易燃氣體的濃度等進行檢測的監(jiān)控系統(tǒng)。該系統(tǒng)配合外圍電路能實現(xiàn)對上述環(huán)境指標的控制并存儲相關(guān)數(shù)據(jù)與上位PC機通信。它采用硬件抗干擾和軟件抗干擾技術(shù)，以確保整個系統(tǒng)工作的準確性。 Abstract: In order to meet the needs of mine produce safety，a kind of intellignet mine ambient monotoring and control system based on AT89C51 is introduced.This system can detect the temperature of ambient of mine，the density of poisonous inflammable gas,combined external circuit.With its function part， this system can change above-mentioned elements.
上傳時間： 2013-11-10
上傳用戶：wendy15
Mega16是一款采用先進RISC精簡指令，內(nèi)置A/D的8位單片機，可支持低電壓聯(lián)機 Flash和EEPROM 寫入功能；同時還支持 Basic和C 等高級語言編程。用它設(shè)計電子時鐘不僅成本低，硬件簡單，而且很容易實現(xiàn)系統(tǒng)移植。介紹了如何利用AVR系列單片機Mega16及1602字符液晶來設(shè)計電子時鐘的方法，同時給出了相應(yīng)的電路原理及部分語言程序。 Abstract: ?Mega16 is a high-performance, low power consumption, the use of advanced RISC concise instructions, built-in A/D 8-bit microcontrollers, the on-line support for low-voltage Flash, EEPROM write function. Except Mega16 also support the Basic, C, and other high-level language programming.The electronic clock which is deisgned by Mega16 is not only low-cost, simple hardware, but easy to achieve system migration.The design method of electrioic clock based on the AVR Mega16 and character LCD1602 is introduced in this paper,and the corresponding circuit electrionic and some language program are given.
上傳時間： 2014-12-27
上傳用戶：zl5712176
針對目前燃氣灶市場的狀況，提出一種基于PIC16C711單片機的燃氣灶脈沖點火控制器設(shè)計,具體包括有系統(tǒng)的組成和功能介紹、硬件電路設(shè)計及軟件功能實現(xiàn)。 Abstract: Aiming at today’s gas cooker market, a pulse ignition controler design based on PIC16C711 is presented.The specific descriptions of system components and functions,hardware circuit design and software function are given.
上傳時間： 2013-10-31
上傳用戶：zhqzal1014
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