電學中的測量技術涉及范圍非常廣,電流測量在電學計量中占有非常重要的位置。如何精確地進行電流測量是精密測量的一大難題。傳統的電流檢測電路多采用運算放大芯片與片外電流檢測電路相結合的方式,電路集成度很低,需要較多的接口和資源才能完成對電路的檢測。本文把所有電路部分都集成在一塊芯片上,包括檢測電阻,運算放大器電路及模擬轉數字轉換電路,從而在電路內部可以進行電流檢測,使電路更好的集成化。前置電路使用二級共源共柵結構的運算放大器,減小溝道長度調制效應造成的電流誤差。10位SAR ADC中采用電容驅動能力強的傳輸門保證了模數轉化器的有效精度。比較器模塊采用再生鎖存器與遲滯比較器作為基礎單元組合解決精密測量的問題。本設計可以作為嵌入芯片內的一小部分而檢測芯片中的微小電流1mA~100mA,工作電壓在1.8v左右,電流檢測精度預期達到10uA的需求。The measurement technology in electricity involves a wide range,and current measurement plays a very important position in electrical measurement.How to accurately measure current is a big problem in precision measurement. The traditional current detecting circuit adopts the combination of the operational amplifier chip and theoff-chip current detecting circuit, The circuit integration is very low, and more interfaces and resources are needed tocomplete the circuit detection.This topic integrates all the circuit parts into one chip, including detection resistance, operational amplifier circuit andanalog to digital conversion circuit. Highly integrated circuit makes the external resources on the chip more intensive,so that current detection can be carried out inside the circuit, so that the circuit can be better integrated. Thefront-end circuit of this project uses two-stage cascade operational amplifier and cascade tube to reduce the currenterror caused by channel length modulation effect. In 10-bit SAR ADC, the transmission gate with strong capacitivedriving ability ensures the effective accuracy of the analog-to-digital converter. Comparator module uses regenerativelatch and hysteresis comparator as basic unit to solve the difficult problem of precision measurement. This topic can beused as a small part of the embedded chip to detect the micro-current in the chip 1 mA~100 mA, the working voltageis about 1.8v, and the current detection accuracy is expected to reach the requirement of 10 uA.
上傳時間： 2022-04-03
上傳用戶：
這是一本英文版的MPC的MATLAB教程，講這一塊的資料太少了，故上傳一本。MPC is one of the few areas that has received on-going interest from researchers in both the industrial and cademic communities.Four major aspects of model predictive control make the design methodology attractive to both practitioners and academics.This is particularly attractive to industry where tight profit margins and limits on the process operation are inevitably present. The third aspect is the ability to perform on-line process optimization. The fourth aspect is the simplicity of the design framework in handling all these complex issues.
標簽： 模型預測控制
上傳時間： 2022-05-05
上傳用戶：zhanglei193
學習Direct3D中的2D-Focus.On.2D.in.Direct3D.-.fly
標簽： Direct3D D-Focus Direct fly
上傳時間： 2013-08-04
上傳用戶：eeworm
EDA Tools in FPGA用于開發FPGA的EDA工具:隨著集成電路和計算機技術的發展，越來越多的公司不斷的開發出更加好用的EDA工具給廣大的
上傳時間： 2013-04-24
上傳用戶：ywqaxiwang
FEATURES Unique 1-Wire interface requires only one port pin for communication Multidrop capability simplifies distributed temperature sensing applications Requires no external components Can be powered from data line. Power supply range is 3.0V to 5.5V Zero standby power required Measures temperatures from -55°C to +125°C. Fahrenheit equivalent is -67°F to +257°F ±0.5°C accuracy from -10°C to +85°C Thermometer resolution is programmable from 9 to 12 bits Converts 12-bit temperature to digital word in 750 ms (max.) User-definable, nonvolatile temperature alarm settings Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition) Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system
上傳時間： 2013-08-04
上傳用戶：CHENKAI
·Applied Mathematics in Integrated Navigation Systems
標簽： nbsp Mathematics Integrated Navigation
上傳時間： 2013-07-17
上傳用戶：liu_yuankang
ink in c++.chm C++編程思想 經典書籍 非常方便，需要的請下載吧。
上傳時間： 2013-06-12
上傳用戶：yanming8525826
Protel99se鼠標增強軟件2.0: 2.0版本改名為“Protel99se鼠標增強軟件”，是因為使用普通三鍵鼠標也可實現 放大和縮小功能。 1.0版本功能：(軟件名稱：“Protel99se增加鼠標滾輪放大縮小功能”) 向上滾動滾輪 --> Zoom In 放大（PageUp鍵） 向下滾動滾輪 --> Zoom Out 縮小（PageDown鍵） 單擊中鍵 --> Zoom Pan 移動屏幕 (Home鍵) 2.0版本新增功能： 1.在手動布局時，按鼠標左鍵移動元件時，再點擊右鍵，可旋轉元件。（非常好用的功能） 2.增加鼠標中鍵手形功能，按住中鍵，移動鼠標，放開中鍵，為一個手形功能。 按中鍵向左移動 --> 在畫線時退回上一步（退格鍵） 按中鍵向右移動 --> 刪除有焦點的對象（Delete鍵） 按中鍵向上移動 --> 放置元件時，進入修改元件屬性 （Tab鍵） 按中鍵向下移動 --> 放置元件時，用于旋轉元件（空格鍵） 按中鍵向左上移動 --> Zoom Out 縮小（PageDown鍵） 按中鍵向右下移動 --> Zoom In 放大（PageUp鍵） 按中鍵向右上移動 --> Clear 刪除所有選擇的對象（Ctrl+Delete鍵） 按中鍵向左下移動 --> Fit All Objects 顯示所有元件（Ctrl+PageDown鍵） 3.在PCB、SCH、PCBLib、SCHLib四個編輯器中都能實現本軟件的所有功能。
上傳時間： 2013-07-02
上傳用戶：電子世界
基于FPGA的單總線(ONE-WIRE)協議的實現源代碼.
上傳時間： 2013-08-30
上傳用戶：wyc199288
Practical FPGA Programming in C \r\nBy David Pellerin, Scott Thibault \r\nPublisher: Prentice Hall PTR \r\nPub Date: April 22, 2005 \r\nISBN: 0-13-154318-0 \r\nPages: 464 \r\n
標簽： Programming Practical FPGA in
上傳時間： 2013-08-31
上傳用戶：firstbyte
