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1、······························裝·················訂·················線······························安徽工業(yè)大學(xué)畢業(yè)設(shè)計(論文)說明書摘要控制系統(tǒng)校正屬于系統(tǒng)設(shè)計環(huán)節(jié),通過校正可以使系統(tǒng)的性能得到改善,從而使系統(tǒng)滿足期望的性能指標。本文主要研究線性定常系統(tǒng)的串聯(lián)校正方法,包括串聯(lián)超前校正、串聯(lián)滯后校正和串聯(lián)滯后超前校正。本文首先回顧了系統(tǒng)的時域性能指標和頻域性能指標以及系統(tǒng)的校正方式,然后分別討論了系統(tǒng)校正的根軌跡法和頻率特性法。針對
2、兩種方法,分別給出了控制系統(tǒng)超前校正、滯后校正,滯后超前校正的理論依據(jù)、適用范圍、校正步驟和相應(yīng)的算法流程圖,并針對各個校正方法編寫了相應(yīng)的MATLAB仿真程序,同時利用MATLAB的圖形用戶界面設(shè)計功能對控制系統(tǒng)校正進行了可視化界面設(shè)計,為每種校正方法設(shè)計了對應(yīng)的GUI界面。針對每種方法給出具體實例驗證了校正方法的有效性以及算法的正確性。關(guān)鍵詞:串聯(lián)校正,MATLAB,根軌跡法,頻率特性法,GUIIV······························裝·················訂··············
3、···線······························安徽工業(yè)大學(xué)畢業(yè)設(shè)計(論文)說明書AbstractControlsystemcorrectionisapartofsystemdesign.Withacompensator,thesystemcanbemorepreciseandmorestable,thusthesystemcanmeettherequirement.Thispaperinvestigatesthedesignofcascadecompensatorsforlineartimeinvaria
4、ntsystem,includingcascadephase-leadcompensators,cascadephase-lagcompensatorsandcascadephaselag-leadcompensators.Wefirstrecalltheperformanceindicatorsintimedomainsandinfrequencydomains,andthecorrectionmethodsforlineartimeinvariantsystems.Then,wediscussthecompensatord
5、esignmethodsbasedonroot-locusandfrequencycharacteristics.Forthebothmethods,thetheoreticalbasisandapplicablerange,correctstepsandthecorrespondingalgorithmflowchartsaregivenforphase-leadcompensator,phase-lagcompensatorandphaselag-leadcompensator.MATLABprogramsarewritt
6、enforeachcorrectionmethods.VisualinterfacesaredesignedusingMATLAB’sGUIdesignfunction.Also,wegivesomeexamplestoillustratetheeffectivenessofourcorrectionmethodsandthecorrectnessofouralgorithms.Keywords:cascadecompensator,root-locusmethod,frequencycharacteristicsmethod
7、,MATLAB,GUIIV······························裝·················訂·················線······························安徽工業(yè)大學(xué)畢業(yè)設(shè)計(論文)說明書目錄摘要IAbstractII1緒論11.1課題的意義及研究現(xiàn)狀11.1.1MATLAB的發(fā)展及系統(tǒng)構(gòu)成21.1.2MATLAB的GUI設(shè)計31.2創(chuàng)新點41.3論文的結(jié)構(gòu)42控制系統(tǒng)校正的方法52.1控制系統(tǒng)的性能指標52.1.1控制系統(tǒng)的時域指標52.1.2控制系統(tǒng)的頻域指
8、標62.1.3一階系統(tǒng)的性能指標72.1.4二階系統(tǒng)的性能指標82.2控制系統(tǒng)的校正方式103控制系統(tǒng)的根軌跡校正123.1根軌跡方法123.2開環(huán)零極點對根軌跡的影響123.2.1開環(huán)零點對根軌跡的影響123.2.2開環(huán)極點對根軌跡的影響133.2.3開環(huán)偶極子對根軌跡的影