·【英文題名】 Research of Speed Regulate System of Three Phase BLDCM Based on DSP 【作者中文名】 劉桂芬; 【導師】 孟慶春; 【學位授予單位】 遼寧工程技術大學; 【學科專業名稱】 控制理論與控制工程 【學位年度】 2007 【論文級別】 碩士 【網絡出版投稿人】 遼寧工程技術大學 【網絡出版投稿時間】 2006-01-02 【
上傳時間： 2013-06-19
上傳用戶：leileiq
本電路為寬帶直接變頻發射機模擬部分的完整實施方案（模擬基帶輸入、RF輸出）。通過使用鎖相環(PLL)和寬帶集成電壓控制振蕩器(VCO)，本電路支持500 MHz至4.4 GHz范圍內的RF頻率。PLL中的LO執行諧波濾波，確保提供出色的正交精度。低噪聲LDO確保電源管理方案對相位噪聲和EVM沒有不利影響。這種器件組合可以提供500 MHz至4.4 GHz頻率范圍內業界領先的直接變頻發射機性能。
上傳時間： 2013-11-23
上傳用戶：墻角有棵樹
The MAX2870 ultra-wideband phase-locked loop (PLL) and voltagecontrol oscillator (VCO) can operate in both integer-N and fractional-Nmodes, similar to the Analog Devices ADF4350 wideband synthesizer.This application note compares the MAX2870 and ADF4350 registers andloop filter design in detail. Users who already familiar with ADF4350 canuse this application note as a quick design reference.
上傳時間： 2014-12-23
上傳用戶：變形金剛
特點： 精確度0.1%滿刻度 可作各式數學演算式功能如:A+B/A-B/AxB/A/B/A&B(Hi or Lo)/|A|/ 16 BIT類比輸出功能 輸入與輸出絕緣耐壓2仟伏特/1分鐘(input/output/power) 寬范圍交直流兩用電源設計 尺寸小,穩定性高
上傳時間： 2014-12-23
上傳用戶：ydd3625
Many applications require a clock signal to be synchronous, phase-locked, or derived fromanother signal, such as a data signal or another clock. This type of clock circuit is important in
上傳時間： 2014-12-23
上傳用戶：qq21508895
Abstract: Transimpedance amplifiers (TIAs) are widely used to translate the current output of sensors like photodiode-to-voltagesignals, since several circuits and instruments can only accept voltage input. An operational amplifier with a feedback resistor fromoutput to the inverting input is the most straightforward implementation of such a TIA. However, even this simple TIA circuit requirescareful trade-offs among noise gain, offset voltage, bandwidth, and stability. Clearly stability in a TIA is essential for good, reliableperformance. This application note explains the empirical calculations for assessing stability and then shows how to fine-tune theselection of the feedback phase-compensation capacitor.
標簽： Transimpedance Stabilize Amplifier Your
上傳時間： 2013-11-13
上傳用戶：daoyue
Control systems are becoming increasingly dependent on digital processing and so require sensors able to provide direct digital inputs. Sensors based on time measurement, having outputs based on a frequency or phase, have an advantage over conventional analogue sensors in that their outputs can be measured directly in digital systems by pulse counting.
上傳時間： 2013-10-08
上傳用戶：wuyuying
Highlights the LTC1062 as a lowpass filter in a phase lock loop. Describes how the loop's bandwidth can be increased and the VCO output jitter reduced when the LTC1062 is the loop filter. Compares it with a passive RC loop filter. Also discussed is the use of LTC1062 as simple bandpass and bandstop filter.
上傳時間： 2013-10-24
上傳用戶：chens000
分析了調幅信號和載波信號之間的相位差與調制信號的極性的對應關系,得出了相敏檢波電路輸出電壓的極性與調制信號的極性有對應關系的結論。為了驗證相敏檢波電路的這一特性,給出3 個電路方案,分別選用理想元件和實際元件,采用Multisim 對其進行仿真實驗,直觀形象地演示了相敏檢波電路的鑒相特性,是傳統的實際操作實驗所不可比擬的。關鍵詞:相敏檢波;鑒相特性;Multisim;電路仿真 Abstract : The corresponding relation between modulation signal polarity and difference phases of amplitudemodulated signal and the carrier signal ,the polarity of phase2sensitive detecting circuit output voltage and the polarity of modulation signal are correspondent . In order to verify this characteristic ,three elect ric circuit s plans are produced ,idea element s and actual element s are selected respectively. Using Multisim to carry on a simulation experiment ,and then demonst rating the phase detecting characteristic of the phase sensitive circuit vividly and directly. Which is t raditional practical experience cannot be com pared.Keywords :phase sensitive detection ;phase2detecting characteristic ;Multisim;circuit simulation
上傳時間： 2013-11-23
上傳用戶：guanhuihong
模擬集成電路的設計與其說是一門技術，還不如說是一門藝術。它比數字集成電路設計需要更嚴格的分析和更豐富的直覺。嚴謹堅實的理論無疑是嚴格分析能力的基石，而設計者的實踐經驗無疑是誕生豐富直覺的源泉。這也正足初學者對學習模擬集成電路設計感到困惑并難以駕馭的根本原因。.美國加州大學洛杉機分校(UCLA)Razavi教授憑借著他在美國多所著名大學執教多年的豐富教學經驗和在世界知名頂級公司(AT&T，Bell Lab，HP)卓著的研究經歷為我們提供了這本優秀的教材。本書自2000午出版以來得到了國內外讀者的好評和青睞，被許多國際知名大學選為教科書。同時，由于原著者在世界知名頂級公司的豐富研究經歷，使本書也非常適合作為CMOS模擬集成電路設計或相關領域的研究人員和工程技術人員的參考書。... 本書介紹模擬CMOS集成電路的分析與設計。從直觀和嚴密的角度闡述了各種模擬電路的基本原理和概念，同時還闡述了在SOC中模擬電路設計遇到的新問題及電路技術的新發展。本書由淺入深，理論與實際結合，提供了大量現代工業中的設計實例。全書共18章。前10章介紹各種基本模塊和運放及其頻率響應和噪聲。第11章至第13章介紹帶隙基準、開關電容電路以及電路的非線性和失配的影響，第14、15章介紹振蕩器和鎖相環。第16章至18章介紹MOS器件的高階效應及其模型、CMOS制造工藝和混合信號電路的版圖與封裝。 1 Introduction to Analog Design 2 Basic MOS Device Physics 3 Single-Stage Amplifiers 4 Differential Amplifiers 5 Passive and Active Current Mirrors 6 Frequency Response of Amplifiers 7 Noise 8 Feedback 9 Operational Amplifiers 10 Stability and Frequency Compensation 11 Bandgap References 12 Introduction to Switched-Capacitor Circuits 13 Nonlinearity and Mismatch 14 Oscillators 15 phase-locked Loops 16 Short-Channel Effects and Device Models 17 CMOS Processing Technology 18 Layout and Packaging
上傳時間： 2014-12-23
上傳用戶：杜瑩12345
