基于磨機(jī)的預(yù)測控制器的設(shè)計(jì)-文庫吧
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【正文】 ............................... 11 廣義預(yù)測控制 ......................................................................................... 11 濟(jì)南大學(xué)畢業(yè)設(shè)計(jì) 2 摘 要 球磨機(jī)是粉磨生產(chǎn)的重要設(shè)備，它耗能大，生產(chǎn)效率地下，因此實(shí)現(xiàn)磨機(jī)負(fù)荷的自動(dòng)控制，提高粉末效率勢在必行；球磨機(jī)系統(tǒng)具有多變量、強(qiáng)耦合、非線性等特性。以上兩點(diǎn)使得磨機(jī)負(fù)荷控制成為水泥過程的重點(diǎn)和難點(diǎn)問題。目 前國內(nèi)磨機(jī)負(fù)荷控制軟件采用的控制方法多數(shù)是簡單的 PID 控制，難以適應(yīng)球磨機(jī)的工藝特點(diǎn)，且達(dá)不到控制要求。 自十九世紀(jì)末第一臺球磨機(jī)誕生以來，球磨機(jī)因其應(yīng)用廣泛、大功率、大產(chǎn)出的特點(diǎn)在礦業(yè)、建材、化工、冶金及電力部門等基礎(chǔ)行業(yè)的原料粉碎中得到廣泛的應(yīng)用。隨之陶瓷工業(yè)的發(fā)展，球磨機(jī)也成為陶瓷工業(yè)中粉磨工序中不可缺少的機(jī)械設(shè)備。 本課題對粉磨工藝進(jìn)行深入了解，在了解粉磨的工業(yè)流程后，依托預(yù)測控制綜合利用歷史信息和模型信息 ,對目標(biāo)函數(shù)不斷進(jìn)行滾動(dòng)優(yōu)化 ,并根據(jù)實(shí)際測得的對象輸出修正或補(bǔ)償預(yù)測模型。這種控制策略更加適用 于復(fù)雜的工業(yè)過程 ,并在復(fù)雜的工業(yè)過程中獲得了廣泛的應(yīng)用。在磨機(jī)系統(tǒng)中加入預(yù)測控制器，利用預(yù)測控制算法對純滯后、非線性等系統(tǒng)的有效控制很好的實(shí)現(xiàn)了對磨機(jī)系統(tǒng)的控制。 在 MATLAB 上根據(jù)算法原理搭建模型，完成控制器的設(shè)計(jì)工作，將控制器用于磨機(jī)系統(tǒng)模型的控制，在此基礎(chǔ)上進(jìn)行仿真，在保證系統(tǒng)穩(wěn)定的前提下，根據(jù)實(shí)驗(yàn)結(jié)果調(diào)節(jié)控制器參數(shù)以使控制效果達(dá)到要求。 關(guān)鍵詞： 球磨機(jī)；粉磨工藝；預(yù)測控制； MATLAB 仿真； 濟(jì)南大學(xué)畢業(yè)設(shè)計(jì) 3 ABSTRACT Ball mill machinel is grinding of important production equipment, it energy consumption, production efficiency, and underground, therefore realizes the mill load of automatic control and improve the efficiency of the powder is imperative, The ball mill system has many variables, strong coupling, nonlinear characteristics. These two make mill load control bee cement process the key points and difficulties. At present domestic mill load control software using the control method is the most simple PID control, difficult to adapt to the ball mill, the process characteristics and can not reach the control requirements. Since the late nieenth century the first ball mill since birth, ball mill widely used because of its high power, the characteristics of large output, in mining, building materials, chemical industry, metallurgy and power departments and other basic industry raw material crushing widely applied . With the development of ceramics industry, ball mill has bee the ceramics industry grinding process of indispensable mechanical equipmen. This topic predictive control based on prehensive utilization of historical information and information model of target function is continuous rolling optimization, and according to the actual measurement of object output correction or pensation forecast model. This control strategy are more suited for plex industrial processes, and in the process of industrial plex for a wide range of applications. In the mill system to join predictive controller, using predictive control algorithm for pure timedelay nonlinear system, the effective control good realize the mill system control. In matlab algorithm theory according to build model, plete controller design work, will controller in grinding machine control system model, and based on this, and simulation in ensure that the system is stable, under the premise of according to the result of the experiment adjust controller parameters in order to make the co
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