·SystemVerilog is a rich set of extensions to the IEEE 1364-2001 Verilog Hardware Description Language (Verilog HDL). These extensions address two major aspects of HDL-based design. First, modeling ver
標簽: nbsp SystemVerilog Design for
上傳時間: 2013-07-14
上傳用戶:ainimao
·詳細說明:該代碼是雙速率的語音壓縮編碼(G.723.1)的matlab代碼。能在matlab6.5以上運行-Dual-rate voice compressed encoding(G.723.1) based on MatLab platform. It works on MatLab 6.5 or later versions.
上傳時間: 2013-06-19
上傳用戶:121212121212
·【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
摘要:本文主要介紹以CPLD 芯片進行十字路口的交通燈的設計,用CPLD 作為交通燈控制器的主控芯片,采用VHDL\r\n語言編寫控制程序,利用CPLD的可重復編程和在動態系統重構的特性,大大地提高了數字系統設計的靈活性和通用性。\r\n關鍵詞:CPLD;VHDL;交通燈控制器\r\n中圖分類號:TP39\r\nAbstract :This paper introduces the electronic-traffic lamp, which is based on the VHDL and is com
上傳時間: 2013-08-11
上傳用戶:aesuser
用fpga實現的DA轉換器,有說明和源碼,VDHL文件。\\r\\nA PLD Based Delta-Sigma DAC\\r\\nDelta-Sigma modulation is the simple, yet powerful,\\r\\ntechnique responsible for the extraordinary\\r\\nperformance and low cost of today s audio CD\\r\\nplayers. The simplest Delta-Sigm
上傳時間: 2013-08-22
上傳用戶:dudu1210004
Many CAD users dismiss schematic capture as a necessary evil in the process of creating\r\nPCB layout but we have always disputed this point of view. With PCB layout now offering\r\nautomation of both component placement and track routing, getting the des
標簽: schematic necessary creating dismiss
上傳時間: 2013-09-25
上傳用戶:baiom
微弱信號檢測裝置 四川理工學院 劉鵬飛、梁天德、曾學明 摘要: 本設計以TI的Launch Pad為核心板,采用鎖相放大技術設計并制作了一套微弱信號檢測裝置,用以檢測在強噪聲背景下已知頻率微弱正弦波信號的幅度值,并在液晶屏上數字顯示出所測信號相應的幅度值。實驗結果顯示其抗干擾能力強,測量精度高。 關鍵詞:強噪聲;微弱信號;鎖相放大;Launch Pad Abstract: This design is based on the Launch Pad of TI core board, using a lock-in amplifier technique designed and produced a weak signal detection device, to measure the known frequency sine wave signal amplitude values of the weak in the high noise background, and shows the measured signal amplitude of the corresponding value in the liquid crystal screen. Test results showed that it has high accuracy and strong anti-jamming capability. Keywords: weak signal detection; lock-in-amplifier; Launch Pad 1、引言 隨著現代科學技術的發展,在科研與生產過程中人們越來越需要從復雜高強度的噪聲中檢測出有用的微弱信號,因此對微弱信號的檢測成為當前科研的熱點。微弱信號并不意味著信號幅度小,而是指被噪聲淹沒的信號,“微弱”也僅是相對于噪聲而言的。只有在有效抑制噪聲的條件下有選擇的放大微弱信號的幅度,才能提取出有用信號。微弱信號檢測技術的應用相當廣泛,在生物醫學、光學、電學、材料科學等相關領域顯得愈發重要。 2、方案論證 針對微弱信號的檢測的方法有很多,比如濾波法、取樣積分器、鎖相放大器等。下面就針對這幾種方法做一簡要說明。 方案一:濾波法。 在大部分的檢測儀器中都要用到濾波方法對模擬信號進行一定的處理,例如隔離直流分量,改善信號波形,防止離散化時的波形混疊,克服噪聲的不利影響,提高信噪比等。常用的噪聲濾波器有:帶通、帶阻、高通、低通等。但是濾波方法檢測信號不能用于信號頻譜與噪聲頻譜重疊的情況,有其局限性。雖然可以對濾波器的通頻帶進行調節,但其噪聲抑制能力有限,同時其準確性與穩定性將大打折扣。
上傳時間: 2013-11-04
上傳用戶:lty6899826
Abstract: This application note describes how to design boost converters using the MAX17597 peakcurrent-mode controller. Boost converters can be operated in discontinuous conduction mode (DCM) orcontinuous conduction mode (CCM). This operating mode can affect the component choices, stress levelin power devices, and controller design. Formulas for calculating component values and ratingsare alsopresented.
上傳時間: 2013-11-16
上傳用戶:zcs023047
Abstract: Many industrial/scientific/medical (ISM) band radio frequency (RF) products use crystal oscillators to generate areference for the phase-locked loop (PLL)-based local oscillator (LO). This tutorial provides a basic description of theISM-RF Crystal Calculator, which can be used to calculate various impacts on crystal frequency accuracy and startupmargin for such an LO.
上傳時間: 2013-11-15
上傳用戶:JasonC
Recently a new technology for high voltage Power MOSFETshas been introduced – the CoolMOS™ . Based on thenew device concept of charge compensation the RDS(on) areaproduct for e.g. 600V transistors has been reduced by afactor of 5. The devices show no bipolar current contributionlike the well known tail current observed during the turn-offphase of IGBTs. CoolMOS™ virtually combines the lowswitching losses of a MOSFET with the on-state losses of anIGBT.
標簽: COOLMOS
上傳時間: 2013-11-14
上傳用戶:zhyiroy