·摘 要:PLC控制步進電機在許多工業(yè)控制中應用廣泛,本文介紹了PLC（ProgRAMmable Logic Controller）通過發(fā)送脈沖和方向信號給步進電機的驅(qū)動器,由驅(qū)動器來控制步進電機工作的原理。本設計采用PLC和大功率晶體管實現(xiàn)步進電機的驅(qū)動和控制,結(jié)構簡單,可靠性高,成本低,實用性強,具有較高的通用性和應用推廣價值。[著者文摘]
上傳時間： 2013-04-24
上傳用戶：comua
針對未來十年的 “All-ProgRAMmable”器件的顛覆之作
上傳時間： 2013-04-24
上傳用戶：hgy9473
:文章針對目前數(shù)字信號處理中大量采用的快速傅立葉變換[FFT] 算法采用軟件編程來處理的應用現(xiàn)狀,在對FFT 算法進行\(zhòng)\\\\\\\r\\\\\\\\n分析的基礎上,給出了用FPGA[Field ProgRAMmable Gate Array] 實現(xiàn)的8 點32 位FFT 處理器方案,并得到了系統(tǒng)的仿真結(jié)果。\\\\\\\\r\\\\\\\\n最后在Altera 公司FLEX10K系列FPGA 芯片上成功地實現(xiàn)了綜合。
上傳時間： 2013-08-09
上傳用戶：yangzhiwei
為了滿足現(xiàn)代高速通信中頻率快速轉(zhuǎn)換的需求，基于坐標旋轉(zhuǎn)數(shù)字計算（CORDIC，Coordinate Rotation Digital Computer）算法完成正交直接數(shù)字頻率合成（ODDFS，Orthogonal Direct Digital Frequency Synthesizer）電路設計方案。采用MATLAB和Xilinx System Generator開發(fā)工具搭建電路的系統(tǒng)模型，通過現(xiàn)場可編程門陣列（FPGA，F(xiàn)ield ProgRAMmable Gate Array）完成電路的寄存器傳輸級（RTL，Register Transfer Level）驗證，仿真結(jié)果表明電路設計具有很高的有效性和可行性。
上傳時間： 2013-11-09
上傳用戶：hfnishi
Abstract: Many digital devices incorporate analog circuits. For instance, microprocessors, applicationspecificintegrated circuits (ASICs), and field-ProgRAMmable gate arrays (FPGAs) may have internalvoltage references, analog-to-digital converters (ADCs) or digital-to-analog converters (DACs). However,there are challenges when you integrate more analog onto a digital design. As with all things in life, inelectronics we must always trade one parameter for another, with the application dictating the propertrade-off of analog function. In this application note, we examine how the demand for economy of spaceand cost pushes analog circuits onto digital substrates, and what design challenges emerge.
標簽： 模擬IC 性能 模擬 數(shù)字化設計
上傳時間： 2013-11-17
上傳用戶：菁菁聆聽
Abstract: It is incredible how many ProgRAMmable logic controls (PLCs) around us make our modern life possible and pleasant.Machines in our homes heat and cool our air and water, as well as preserve and cook our food. This tutorial explains the importanceof PLCs, and describes how to choose component parts using the parametric tools on the Maxim's website.A similar version of this article was published February 29, 2012 in John Day's Automotive Electronic News.
上傳時間： 2013-11-10
上傳用戶：liaocs77
Abstract: This article discusses application circuits for Maxim force/sense digital-to-analog converters (DACs). Applications include:selectable fixed-gain DAC, ProgRAMmable gain DAC, photodiode bias control, amperometric sensor control, digitally ProgRAMmablecurrent source, Kelvin load sensing, temperature sensing, and high current DAC output. A brief description of the various DAC outputconfigurations is also given.
標簽： DAC
上傳時間： 2013-11-04
上傳用戶：youmo81
Abstract: Using a DAC and a microprocessor supervisor, the system safety can be improved in industrial controllers, ProgRAMmablelogiccontrollers (PLC), and data-acquisition systems. The analog output is set to zero-scale (or pin-ProgRAMmable midscale) when amicroprocessor failure, optocoupler failure, or undervoltage condition occurs. A simple application is shown on how to implement thisfunction.
上傳時間： 2013-10-17
上傳用戶：sjb555
This unique guide to designing digital VLSI circuits takes a top-down approach, reflecting the natureof the design process in industry. Starting with architecture design, the book explains the why andhow of digital design, using the physics that designers need to know, and no more.Covering system and component aspects, design verification, VHDL modelling, clocking, signalintegrity, layout, electricaloverstress, field-ProgRAMmable logic, economic issues, and more, thescope of the book is singularly comprehensive.
標簽： Integrated Digital Circuit Design
上傳時間： 2013-11-04
上傳用戶：life840315
精確度0.05%滿刻度±1位數(shù)（Accuracy 0.05%F.S.±1digit） 可測量交直流電流/交直流電壓/電位計/傳送器/Pt-100/荷重元/電阻等信號（Measuring DCA/DCV/ACA/ACV/Potentiometer/Transmitter/Pt-100/Load Cell/Resistor/etc……） 顯示范圍0-19999可任意規(guī)劃（ProgRAMmable rate 0 to 1999 digit） 小數(shù)點可任意規(guī)劃（Decimal point can be modified） 尺寸小，穩(wěn)定性高（Dimension small & High stability）
上傳時間： 2014-01-25
上傳用戶：RQB123
