在Multisim 10軟件環境下，設計一種由運算放大器構成的精確可控矩形波信號發生器，結合系統電路原理圖重點闡述了各參數指標的實現與測試方法。通過改變RC電路的電容充、放電路徑和時間常數實現了占空比和頻率的調節，通過多路開關投入不同數值的電容實現了頻段的調節，通過電壓取樣和同相放大電路實現了輸出電壓幅值的調節并提高了電路的帶負載能力，可作為頻率和幅值可調的方波信號發生器。Multisim 10仿真分析及應用電路測試結果表明，電路性能指標達到了設計要求。 Abstract: Based on Multisim 10， this paper designed a kind of rectangular-wave signal generator which could be controlled exactly composed of operational amplifier， the key point was how to implement and test the parameter indicators based on the circuit diagram. The duty and the frequency were adjusted by changing the time constant and the way of charging and discharging of the capacitor， the width of frequency was adjusted by using different capacitors provided with multiple switch， the amplitude of output voltage was adjusted by sampling voltage and using in-phase amplifier circuit，the ability of driving loads was raised， the circuit can be used as squarewave signal generator whose frequency and amplitude can be adjusted. The final simulation results of Multisim 10 and the tests of applicable circuit show that the performance indicators of the circuit meets the design requirements.
上傳時間： 2014-01-21
上傳用戶：shen007yue
a Java program that reads a file containing instructions written in self-defined file (TPL in this case), and executes those instructions. This program should take the name of the TPL file as a command line parameter, and write its output to the console.
標簽： file instructions self-defined containing
上傳時間： 2015-01-11
上傳用戶：曹云鵬
The ability to create groups of reports, and grant users access to reports by group. The ability to generate reports as PDF, XLS, HTML, and CSV files. The ability to generate bar, pie and xy charts for inclusion in reports. The ability to schedule and email PDF, XLS, and CSV reports. The ability to define reusable report parameters. Available parameter types include Date, Text, and Query parameters. The ability to create multiple DataSources for use in generating reports. Support for JNDI DataSources and internal connection pooling via Commons-DBCP is included. The ability to upload and hot deploy new reports. Web based administration of users, groups, reports, parameters, and datasources. Cross platform database support via Hibernate based persistence layer. Available in a preconfigured bundle with Apache Tomcat.
上傳時間： 2014-01-14
上傳用戶：franktu
拷拷貝到你的Keil安裝目錄下的c51\bin文件夾中。 工程文件中需設置一下: project->Option for Target Target1 選Debug頁 左側最下面 Dialog Dll 一般是DP51.DLL，不用修改 parameter 中是 -P51 在其后加入 -dledkey 即該行看起來應該是這樣的： -p51 -dledkey 保存即可 進入調試后，點擊：Peripherals，其中多出一個“鍵盤LED實驗仿真板”選擇該項即可。
標簽： Target1 project Option Target
上傳時間： 2013-12-24
上傳用戶：ynwbosss
HMM(Hidden Markov Model)，狀態數目N=3，觀察符號數目M=2，時間長度T=3。 (a) Probability Evaluation: 給定狀態轉換機率A、狀態符號觀察機率B、和起始機率 ，求觀察序列 出現的機率。 (b) Optimal State Sequence: 給定狀態轉換機率A、狀態符號觀察機率B、起始機率 、和觀察序列 ，求一個狀態序列 使得O出現的機率最大。 (c) parameter Estimation: 給定狀態轉換機率A、狀態符號觀察機率B、起始機率 、和觀察序列 ，求新的A、B、 ，使得O出現的機率最大。
上傳時間： 2014-08-28
上傳用戶：heart520beat
pop3代理服務器源代碼One of the most powerful features of Pop3 Agent is a naive Bayes filter, that is capable of recognizing spam e-mails after appropriate training. Pop3 Agent uses an embedded Firebird database server. Of course, you can configure Pop3 Agent to work with an existing server if there is another Interbase/Firebird installation available in your network. Open the Pop3 Agent home directory, delete or rename gds32.dll and ib_util.dll, and set the INI file parameter FBembedded=0.
標簽： features powerful filter Agent
上傳時間： 2014-01-10
上傳用戶：yoleeson
驅動開發向導 I came across an article QuickSYS which implements an NT driver framework. That article demonstrates a MFC application that gets a project name as a parameter and creates Visual C++ workspace with NT driver framework. I decided to copy the NT driver framework source and to put it in the Visual Studio project wizard as seen above. This is simpler rather than running an external executable application that generates the code for you.
標簽： article implements framework QuickSYS
上傳時間： 2014-01-07
上傳用戶：2467478207
A method is presented for augmenting an extended Kalman filter with an adaptive element. The resulting estimator provides robustness to parameter uncertainty and unmodeled dynamics.
標簽： augmenting presented adaptive extended
上傳時間： 2014-01-05
上傳用戶：qq1604324866
Prony算法工具箱。Prony方法是用一組指數項的線性組合來擬和等間距采樣數據的方法,可以從中分析出信號的幅值、相位、阻尼因子、頻率等信息。considerations including data preprocessing, model order selection, model order selection criteria, signal subspace selection, signal and noise separation, root inspection and assessing residuals. The PTbox provides flexibility to compare and display analysis results simultaneously for several parameter variations.
標簽： Prony considerations including data
上傳時間： 2015-09-11
上傳用戶：lizhizheng88
第一版YL2410開發板的BIOS 功能比較簡單，上電之后，LCD顯示藍色、綠色、紅色三個豎條 同時串口顯示如下： Power on reset ************************************ * * * YL2410 Board BIOS V2006 * * Http://www.ucdragon.com * * * ************************************ NAND Flash Boot Please select function : 0 : USB download file（通過USB下載文件） 1 : Uart download file（通過串口下載文件） 2 : Write Nand flash with download file（將下載的文件燒寫到NandFlash） 3 : Load Pragram from Nand flash and run（從NandFlash裝載文件并運行） 4 : Erase Nand flash regions（擦除NandFlash區域） 5 : Write NOR flash with download file（將下載的文件燒寫到NorFlash） 6 : Set boot params（設置Linux啟動相關參數） 7 : Set AutoBoot parameter,1:linux 2:wince(設置WINCE自啟動）
上傳時間： 2015-09-15
上傳用戶：Amygdala
