【正文】
asic course of electronic specialties. Because this course is very abstract and its theory and practice bined tightly, experimental teaching is very important in teaching process. In this paper, an experimental system based on MATLAB is designed and implemented. At present the main research methods have time domain analysis method and frequency domain analysis method. However, the application of these methods are tedious and plex, so it is quite necessary to design special simulating software for linear systems to control systems in practical application. MATLAB language is an engineering calculation and data analysis software with an effective signal process toolbox in it. An integrated signal analysis system is founded on MATLAB language and the signal process toolbox. The system can generate signals, calculate the character’s parameters of signals, analyze time domain and frequency domain and generate spectrum. Making use of the MATLAB function to analyze the system stability is simple and the result is accurate. GUI interface designed by MATLAB language is flexible, easy, and conveniently modifying. It is also easy to modifying linear system parameters at any time and get the systems’ time and frequency domain characteristic curves and performance index, thus make the workload of analyzing linear systems greatly reduced. The simulation experiments make up the weaknesses in the teaching, and they can be demonstrated in the teaching process for helping students understand the idea and equations in the signal and system. Keywords Signals and systems。MATLAB語言是功能十分強(qiáng)大的工程計(jì)算及數(shù)值分析軟件,它提供了高效的信號(hào)處理工具箱,應(yīng)用MATLAB語言和信號(hào)處理工具箱中的函數(shù)建立了一個(gè)集成環(huán)境下的信號(hào)分析系統(tǒng)。河北經(jīng)貿(mào)大學(xué)畢業(yè)論文 Xxxx大學(xué)畢業(yè)論文信號(hào)與系統(tǒng)實(shí)驗(yàn)仿真系統(tǒng)的設(shè)計(jì)——連續(xù)系統(tǒng)分析模塊專業(yè)名稱: 電子信息工程 班 級(jí): xxxx級(jí)x 班 學(xué)生姓名: xxx 指導(dǎo)老師: xxx 完成時(shí)間: 2012年5月 20摘 要《信號(hào)與系統(tǒng)》是電子信息類專業(yè)的專業(yè)基礎(chǔ)課。目前主要的研究方法有時(shí)域分析方法與頻域分析方法,然而這些方法的應(yīng)用比較繁瑣和復(fù)雜,非常有必要設(shè)計(jì)專門針對(duì)線性系統(tǒng)的仿真軟件,便于實(shí)際應(yīng)用中對(duì)系統(tǒng)的控制。應(yīng)用MATLAB語言設(shè)計(jì)的GUI仿真界面具有靈活、簡(jiǎn)便、修改方便等特點(diǎn),可以隨時(shí)修改線性系統(tǒng)的參數(shù),并得到系統(tǒng)的時(shí)頻域特性曲線與性能指標(biāo),使線性系統(tǒng)分析的工作量大大減少。 MATLAB目 錄1 緒論 1 課題研究的背景與意義 1 研究現(xiàn)狀 1 發(fā)展趨勢(shì) 22 系統(tǒng)分析 4 需求分析 4 可行性分析 4 系統(tǒng)結(jié)構(gòu)分析 5 系統(tǒng)整體結(jié)構(gòu) 5 連續(xù)系統(tǒng)分析的模塊介紹 6 連續(xù)系統(tǒng)設(shè)計(jì)流程 63 設(shè)計(jì)開發(fā)環(huán)境介紹 7 MATLAB 7 圖形用戶界面(GUI) 8 創(chuàng)建GUI 8 使用控件 8 寫回調(diào)函數(shù)callback 94 連續(xù)系統(tǒng)的分析與仿真設(shè)計(jì) 11 連續(xù)系統(tǒng)的時(shí)域分析 11 連續(xù)系統(tǒng)的頻域分析 12 連續(xù)系統(tǒng)的復(fù)頻域分析 14 連續(xù)系統(tǒng)的仿真設(shè)計(jì) 17 二階系統(tǒng)零狀態(tài)響應(yīng)的GUI設(shè)計(jì) 18 二階系統(tǒng)沖激響應(yīng)和階躍響應(yīng)的GUI設(shè)計(jì) 195 結(jié)論 21致謝 22參考文獻(xiàn) 1信號(hào)與系統(tǒng)實(shí)驗(yàn)仿真系統(tǒng)的設(shè)計(jì)——連續(xù)系統(tǒng)分析模塊1 緒論 課題研究的背景與意義“信號(hào)與系統(tǒng)”在電子信息專業(yè)中是一門很重要的課程,它涉及的知識(shí)廣泛,包括微積分、概率論等??梢愿奖愕淖鲂盘?hào)系統(tǒng)實(shí)驗(yàn),為教學(xué)和研究提供了方便。 研究現(xiàn)狀所謂系統(tǒng)仿真(system simulation),就是根據(jù)系統(tǒng)分析的目的,在分析系統(tǒng)各要素性質(zhì)及其相互關(guān)系的基礎(chǔ)上,建立能描述系統(tǒng)結(jié)構(gòu)或行為過程的、且具有一定邏輯關(guān)系或數(shù)量關(guān)系的仿真模型,據(jù)此進(jìn)行試驗(yàn)或定量分析,以獲得正確決策所需的各種信息。它和現(xiàn)實(shí)系統(tǒng)實(shí)驗(yàn)的差別在于,仿真實(shí)驗(yàn)不是依據(jù)實(shí)際環(huán)境,而是作為實(shí)際系統(tǒng)映象的系統(tǒng)模型以及相應(yīng)的“人造”環(huán)境下進(jìn)行的。尤其是對(duì)一些復(fù)雜的隨機(jī)問題,應(yīng)用仿真技術(shù)是提供所需信息的唯一令人滿意的方法。系統(tǒng)仿真的基本方法是建立系統(tǒng)的結(jié)構(gòu)模型和量化分析模型,并將其轉(zhuǎn)換為適合在計(jì)算機(jī)上編程的仿真模型,然后對(duì)模型進(jìn)行仿真實(shí)驗(yàn)。跟隨計(jì)算技術(shù)的