解壓密碼：www.elecfans.com 隨著微電子技術(shù)的迅速發(fā)展以及集成電路規(guī)模不斷提高，對(duì)電路性能的設(shè)計(jì) 要求越來越嚴(yán)格，這勢(shì)必對(duì)用于大規(guī)模集成電路設(shè)計(jì)的EDA 工具提出越來越高的 要求。自1972 年美國加利福尼亞大學(xué)柏克萊分校電機(jī)工程和計(jì)算機(jī)科學(xué)系開發(fā) 的用于集成電路性能分析的電路模擬程序SPICE（Simulation Program with IC Emphasis）誕生以來，為適應(yīng)現(xiàn)代微電子工業(yè)的發(fā)展，各種用于集成電路設(shè)計(jì)的 電路模擬分析工具不斷涌現(xiàn)。HSPICE 是Meta-Software 公司為集成電路設(shè)計(jì)中 的穩(wěn)態(tài)分析，瞬態(tài)分析和頻域分析等電路性能的模擬分析而開發(fā)的一個(gè)商業(yè)化通 用電路模擬程序，它在柏克萊的SPICE（1972 年推出），MicroSim公司的PSPICE （1984 年推出）以及其它電路分析軟件的基礎(chǔ)上，又加入了一些新的功能，經(jīng) 過不斷的改進(jìn)，目前已被許多公司、大學(xué)和研究開發(fā)機(jī)構(gòu)廣泛應(yīng)用。HSPICE 可 與許多主要的EDA 設(shè)計(jì)工具，諸如Candence,Workview 等兼容，能提供許多重要 的針對(duì)集成電路性能的電路仿真和設(shè)計(jì)結(jié)果。采用HSPICE 軟件可以在直流到高 于100MHz 的微波頻率范圍內(nèi)對(duì)電路作精確的仿真、分析和優(yōu)化。在實(shí)際應(yīng)用中， HSPICE能提供關(guān)鍵性的電路模擬和設(shè)計(jì)方案，并且應(yīng)用HSPICE進(jìn)行電路模擬時(shí)， 其電路規(guī)模僅取決于用戶計(jì)算機(jī)的實(shí)際存儲(chǔ)器容量。 The HSPICE Integrator Program enables qualified EDA vendors to integrate their products with the de facto standard HSPICE simulator, HSPICE RF simulator, and WaveView Analyzer™. In addition, qualified HSPICE Integrator Program members have access to HSPICE integrator application programming interfaces (APIs). Collaboration between HSPICE Integrator Program members will enable customers to achieve more thorough design verification in a shorter period of time from the improvements offered by inter-company EDA design solutions.
標(biāo)簽： download hspice 2007
上傳時(shí)間： 2013-10-18
上傳用戶：s363994250
介紹了基于Matlab/RTW（Real-time Workshop）和RTX（Real-time extension）構(gòu)建實(shí)時(shí)仿真系統(tǒng)的方法；針對(duì)基于RTX的實(shí)時(shí)仿真系統(tǒng)不能直接進(jìn)行在線調(diào)參的不足，提出了一種利用C API（C文件應(yīng)用程序接口）實(shí)現(xiàn)在線調(diào)參的方法。經(jīng)過實(shí)驗(yàn)證明，此仿真系統(tǒng)不僅具有很強(qiáng)的實(shí)時(shí)性，并且擁有良好的人機(jī)交互能力；另外，在線調(diào)參功能的實(shí)現(xiàn)使仿真試驗(yàn)的效率得到了大大的提高，而且還可以作為一種故障注入方法來考察模型的容錯(cuò)能力，是基于RTX實(shí)時(shí)仿真系統(tǒng)的一大改良。
標(biāo)簽： API RTX 實(shí)時(shí)仿真系統(tǒng)
上傳時(shí)間： 2014-03-20
上傳用戶：lizhizheng88
The power of programmability gives industrial automation designers a highly efficient， cost-effective alternative to traditional motor control units （MCUs）。 The parallel-processing power， fast computational speeds， and connectivity versatility of Xilinx® FPGAs can accelerate the implementation of advanced motor control algorithms such as Field Oriented Control （FOC）。 Additionally， Xilinx devices lower costs with greater on-chip integration of system components and shorten latencies with high-performance digital signal processing （DSP） that can tackle compute-intensive functions such as PID Controller， Clark/Park transforms， and Space Vector PWM. The Xilinx Spartan®-6 FPGA Motor Control Development Kit gives designers an ideal starting point for evaluating time-saving， proven， motor-control reference designs. The kit also shortens the process of developing custom control capabilities， with integrated peripheral functions （Ethernet， PowerLink， and PCI® Express）， a motor-control FPGA mezzanine card （FMC） with built-in Texas Instruments motor drivers and high-precision Delta-Sigma modulators， and prototyping support for evaluating alternative front-end circuitry.
標(biāo)簽： 賽靈思 電機(jī)控制 開發(fā)套件 英文
上傳時(shí)間： 2013-10-28
上傳用戶：wujijunshi
Ebase實(shí)時(shí)數(shù)據(jù)庫系統(tǒng)（Ebase Real-time Database Management System，簡(jiǎn)稱EBase實(shí)時(shí)數(shù)據(jù)庫）是上海谷益科技有限公司推出的具有自主知識(shí)產(chǎn)權(quán)的實(shí)時(shí)數(shù)據(jù)庫管理系統(tǒng)及套件產(chǎn)品。 實(shí)時(shí)數(shù)據(jù)庫系統(tǒng)理論在新領(lǐng)域的擴(kuò)展，在電力、鋼鐵、化工、造紙領(lǐng)域有著廣闊的應(yīng)用前景，可以為企業(yè)提供高速、實(shí)時(shí)數(shù)據(jù)服務(wù)，能夠?qū)焖僮兓臄?shù)據(jù)進(jìn)行長(zhǎng)期保存，是工廠控制層與生產(chǎn)管理系統(tǒng)之間連接橋梁，同時(shí)也是先進(jìn)控制，在線優(yōu)化、故障診斷的數(shù)據(jù)平臺(tái)
標(biāo)簽： Ebase 實(shí)時(shí)數(shù)據(jù)庫
上傳時(shí)間： 2013-10-08
上傳用戶：muhongqing
微電腦型單相交流集合式電表（單相二線系統(tǒng)） 特點(diǎn)： 精確度0.25%滿刻度±1位數(shù) 可同時(shí)量測(cè)與顯示交流電壓,電流,頻率,瓦特,(功率因數(shù)/視在功率) 交流電壓,電流,瓦特皆為真正有效值(TRMS) 交流電流,瓦特之小數(shù)點(diǎn)可任意設(shè)定 瓦特單位W或KW可任意設(shè)定 CT比可任意設(shè)定(1至999) 輸入與輸出絕緣耐壓 2仟伏特/1分鐘( 突波測(cè)試強(qiáng)度4仟伏特(1.2x50us) 數(shù)位RS-485界面 (Optional) 主要規(guī)格： 精確度: 0.1% F.S.±1 digit (Frequency) 0.25% F.S.±1 digit(ACA,ACV,Watt,VA) 0.25% F.S. ±0.25o(Power Factor) (-.300~+.300) 輸入負(fù)載: <0.2VA (Voltage) <0.2VA (Current) 最大過載能力: Current related input: 3 x rated continuous 10 x rated 30 sec. 25 x rated 3sec. 50 x rated 1sec. Voltage related input: maximum 2 x rated continuous 過載顯示: "doFL" 顯示值范圍: 0~600.0V(Voltage) 0~999.9Hz(Frequency)(<20% for voltage input) 0~19999 digit adjustable(Current,Watt,VA) 取樣時(shí)間: 2 cycles/sec. RS-485通訊位址: "01"-"FF" RS-485傳輸速度: 19200/9600/4800/2400 selective RS-485通信協(xié)議: Modbus RTU mode 溫度系數(shù): 100ppm/℃ (0-50℃) 顯示幕: Red high efficiency LEDs high 10.16 mm(0.4") 參數(shù)設(shè)定方式: Touch switches 記憶型式: Non-volatile E²PROM memory 絕緣抗阻: >100Mohm with 500V DC 絕緣耐壓能力: 2KVac/1 min. (input/output/power) 1600 Vdc (input/output) 突波測(cè)試: ANSI c37.90a/1974,DIN-IEC 255-4 impulse voltage 4KV(1.2x50us) 使用環(huán)境條件: 0-50℃(20 to 90% RH non-condensed) 存放環(huán)境條件: 0-70℃(20 to 90% RH non-condensed) CE認(rèn)證: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001
上傳時(shí)間： 2015-01-03
上傳用戶：幾何公差
Abstract: This application note explains how to design an intelligent lighting controller that senses and measures the ambient lightlevel with an ambient light sensor (ALS). Equipped with a real-time clock (RTC), the controller also knows when to turn lighting on oroff at specified times. The system presented in this document can be used to control all luminaires that are mains-supply operated.Controller software is also provided in hex format.
標(biāo)簽： 智能照明控制器 測(cè)量 環(huán)境光線
上傳時(shí)間： 2013-11-18
上傳用戶：AbuGe
Modern electronic systems solve so many difficult problems that they often seem like magic. Nonetheless, these systems all have thesame basic limitation: they need a source of electrical power! Most of the time this is a straightforward challenge for the electronicdesigner, because there are many power-delivery solutions. Yet sometimes a device has no direct power source, and running wiresor replacing batteries is impractical. Even when long-life batteries are usable, they eventually need to be replaced, which requires aservice call.
標(biāo)簽： 能量收集
上傳時(shí)間： 2015-01-03
上傳用戶：zukfu
The data plane of the reference design consists of a configurable multi-channel XBERT modulethat generates and checks high-speed serial data transmitted and received by the MGTs. Eachchannel in the XBERT module consists of two MGTs (MGTA and MGTB), which physicallyoccupy one MGT tile in the Virtex-4 FPGA. Each MGT has its own pattern checker, but bothMGTs in a channel share the same pattern generator. Each channel can load a differentpattern. The MGT serial rate depends on the reference clock frequency and the internal PMAdivider settings. The reference design can be scaled anywhere from one channel (two MGTs)to twelve channels (twenty-four MGTs).
標(biāo)簽： RocketIO Virtex XAPP 713
上傳時(shí)間： 2013-12-25
上傳用戶：jkhjkh1982
基于通用集成運(yùn)算放大器，利用MASON公式設(shè)計(jì)了一個(gè)多功能二階通用濾波器，能同時(shí)或分別實(shí)現(xiàn)低通、高通和帶通濾波，也能設(shè)計(jì)成一個(gè)正交振蕩器。電路的極點(diǎn)頻率和品質(zhì)因數(shù)能夠獨(dú)立、精確地調(diào)節(jié)。電路使用4個(gè)集成運(yùn)放、2個(gè)電容和11個(gè)電阻，所有集成運(yùn)放的反相端虛地。利用計(jì)算機(jī)仿真電路的通用濾波功能、極點(diǎn)頻率和品質(zhì)因數(shù)的獨(dú)立控制和正交正弦振蕩，從而證明該濾波器正確有效。 Abstract: A new multifunctional second-order filter based on OPs was presented by MASON formula. Functions， such as high-pass， band-pass， low-pass filtering， can be realized respectively and simultaneously， and can become a quadrature oscillator by modifying resistance ratio. Its pole angular frequency and quality factor can be tuned accurately and independently. The circuit presented contains four OPs， two capacitors， and eleven resistances， and inverting input of all OPs is virtual ground. Its general filtering， the independent control of pole frequency and quality factor and quadrature sinusoidal oscillation were simulated by computer， and the result shows that the presented circuit is valid and effective.
標(biāo)簽： MASON 多功能 二階 濾波器設(shè)計(jì)
上傳時(shí)間： 2013-10-09
上傳用戶：13788529953
要生產(chǎn)音頻脈沖，只要算出某一音頻的周期(1/頻率)，可以利用定時(shí)器計(jì)時(shí)的方式得到此頻率的脈沖。而Arduino平臺(tái)“封裝”了新的數(shù)字輸出函數(shù)tone()。更簡(jiǎn)易的實(shí)現(xiàn)喇叭和蜂鳴器唱歌。 tone(pin, frequency)，Arduino會(huì)向指定pin發(fā)送制定頻率的方波，執(zhí)行noTone()函數(shù)來停止。 tone(pin, frequency, duration方法多了一個(gè)參數(shù)，代表發(fā)送方波持續(xù)的時(shí)間，到時(shí)自動(dòng)停止發(fā)送信號(hào)，就不需要noTone()函數(shù)。 利用tone()函數(shù)播放音樂，只需要查表了解各個(gè)音符對(duì)應(yīng)的頻率，還要求個(gè)人稍微能看懂音樂譜子的節(jié)拍。 物料清單 ： Arduino 328控制板 1塊 8Ω 0.5W的喇叭（或者蜂鳴器） 1個(gè)（ATmega328的驅(qū)動(dòng)能力足夠，直接拉電流就ok!） 12Ω電阻(限流) 1個(gè) 實(shí)物圖：
標(biāo)簽： Arduino 328 控制板 制作音樂
上傳時(shí)間： 2013-10-14
上傳用戶：jiangxiansheng
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