單容水箱液位控制系統(tǒng)設(shè)計(jì)

1、精選優(yōu)質(zhì)文檔傾情為你奉上精選優(yōu)質(zhì)文檔傾情為你奉上專心專注專業(yè)專心專注專業(yè)精選優(yōu)質(zhì)文檔傾情為你奉上專心專注專業(yè)過程控制系統(tǒng)設(shè)計(jì)作業(yè) 單容水箱液位控制系統(tǒng)設(shè)計(jì)學(xué)生姓名 文強(qiáng) 學(xué)號 任課教師 陶瓏 院、系、中心 ?？撇繉I(yè) 生產(chǎn)過程自動化 提交日期 2015年 10 月 日 太 原 科 技 大 學(xué)單容水箱液位控制系統(tǒng)設(shè)計(jì)摘 要本論文以單容水箱為被控對象，給出了單閉環(huán)控制系統(tǒng)、串級控制系統(tǒng)和前饋反饋控制系統(tǒng)的設(shè)計(jì)方案，實(shí)現(xiàn)對水箱液位的控制。本論文還針對每種控制系統(tǒng)，在Matlab的Simulink中建立仿真模型進(jìn)行仿真，得到仿真曲線，并且利用仿真曲線分析控制系統(tǒng)的性能，例如最大動態(tài)偏差、調(diào)節(jié)時(shí)間、衰減

2、率和積分性能指標(biāo)IAE等。單閉環(huán)控制系統(tǒng)的設(shè)計(jì)包括P、I、PI和PID的設(shè)計(jì)。本文分別通過衰減頻率特性法（理論整定法）和衰減曲線法（工程整定法）對控制器參數(shù)進(jìn)行了整定。本論文還通過比較各控制系統(tǒng)的仿真曲線和系統(tǒng)性能指標(biāo)，對各種控制系統(tǒng)設(shè)計(jì)方案進(jìn)行了比較，發(fā)現(xiàn)串級控制和前饋反饋控制可提高系統(tǒng)性能。關(guān)鍵詞： PID；串級；前饋反饋；參數(shù)整定；SimulinkDesign on Water Level Control in a Tank AbstractThis thesis provides design methods ofsingle closed-loop control system,ca

3、scade control systemand feed forwardcontrol system about the controlled object a singlewater tank,and it achieves the goal of controlling level.For every kind of control system,simulation model is established by using simulation tool Matlab, simulation curves can analysis the performance ofcontrol s

4、ystem,such as the maximum percent overshoot,settling time,attenuation rate and IAE.The design ofsingle closed-loop controlsystemincludes designs of P,I,PIand PID.The controller parameter is tuned by frequency response of attenuation rate and the attenuation curve .All thecontrol design methods included are compared by simulation curves andperformance indexes and we finally find that cascade control and feed forward controlare able to improvesystems performance.Keywords: PID；Cascade；Feedforward- feedback；Parameter tuning；Simulink目 錄