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  本文關(guān)鍵詞：循環(huán)流化床鍋爐脫硫控制策略研究　出處：《山西大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 循環(huán)流化床 爐內(nèi)脫硫 內(nèi)模控制 模糊控制 模糊內(nèi)模

【摘要】：近幾十年來(lái),在世界范圍內(nèi)興起了一種新型潔凈燃燒技術(shù),該技術(shù)對(duì)燃料種類的要求較為寬泛,有較好的穩(wěn)燃性能,灰渣利用較普通燃燒方式更容易,且大氣污染物排放濃度較低。近些年,在能源節(jié)約和環(huán)境友好政策環(huán)境下,循環(huán)流化床機(jī)組以其顯著的經(jīng)濟(jì)效益和環(huán)境效益得到了廣泛的推廣。循環(huán)流化床爐內(nèi)脫硫系統(tǒng)作為循環(huán)流化床機(jī)組的重要組成部分,具有設(shè)備投資少、運(yùn)行成本低、占地面積小、脫硫效率高等突出優(yōu)點(diǎn),但其對(duì)象具有純時(shí)滯、大遲延、參數(shù)時(shí)變等特性,傳統(tǒng)控制算法無(wú)法兼顧脫硫效率與脫硫過(guò)程的經(jīng)濟(jì)性。為此,本文從循環(huán)流化床鍋爐脫硫原理、脫硫效率的影響因素及脫硫過(guò)程對(duì)象的特性出發(fā),應(yīng)用先進(jìn)控制算法,對(duì)爐內(nèi)脫硫系統(tǒng)進(jìn)行控制系統(tǒng)設(shè)計(jì)。內(nèi)�？刂茖�(duì)具有純時(shí)滯、大遲延、參數(shù)時(shí)變特性的被控對(duì)象有較好的控制效果,爐內(nèi)脫硫系統(tǒng)即為該種對(duì)象,為此以內(nèi)模控制為基礎(chǔ),綜合考慮內(nèi)�？刂扑惴ǖ奶攸c(diǎn),設(shè)計(jì)了三種爐內(nèi)脫硫控制系統(tǒng),分別為：爐內(nèi)脫硫內(nèi)�？刂葡到y(tǒng),爐內(nèi)脫硫變?yōu)V波器參數(shù)內(nèi)�？刂葡到y(tǒng)、爐內(nèi)脫硫模糊內(nèi)�？刂葡到y(tǒng)。應(yīng)用設(shè)計(jì)的控制系統(tǒng)對(duì)爐內(nèi)脫硫辨識(shí)對(duì)象進(jìn)行控制仿真,并與傳統(tǒng)PID控制算法進(jìn)行了控制系統(tǒng)的響應(yīng)速度、超調(diào)量、調(diào)節(jié)時(shí)間、魯棒性等控制效果的比較,仿真結(jié)果表明了所設(shè)計(jì)的控制系統(tǒng)在改善系統(tǒng)控制品質(zhì)方面的優(yōu)越性。
[Abstract]:In recent decades, a new clean combustion technology has emerged in the world, which requires a wide range of fuel types, has better combustion stability, and the use of ash is easier than the ordinary combustion mode. In recent years, in the environment of energy conservation and environmental friendly policy. Circulating fluidized bed unit has been widely popularized for its remarkable economic and environmental benefits. As an important part of circulating fluidized bed unit, circulating fluidized bed furnace desulphurization system has less equipment investment. The operation cost is low, the area is small, the desulfurization efficiency is high and so on, but its object has the characteristics of pure time delay, large delay, time-varying parameters and so on. The traditional control algorithm can not take into account the efficiency of desulfurization and the economy of desulfurization process. Therefore, this paper starts from the principle of desulphurization of circulating fluidized bed boiler, the influencing factors of desulphurization efficiency and the characteristics of the object of desulfurization process. The advanced control algorithm is used to design the control system of desulphurization system in furnace. The internal model control has good control effect for the controlled object with pure time delay, large delay and time-varying parameters. The desulphurization system in furnace is this kind of object. Based on the internal model control and considering the characteristics of the internal model control algorithm, three kinds of internal desulfurization control system are designed, namely: the internal model control system of the furnace desulfurization. The parameter internal model control system of desulphurization filter in furnace and the fuzzy internal model control system of desulphurization in furnace are used to control and emulate the identified object of desulfurization in furnace by using the designed control system. And compared with the traditional PID control algorithm, the response speed, overshoot, adjustment time, robustness and other control effects are compared. The simulation results show the superiority of the designed control system in improving the control quality of the system.
【學(xué)位授予單位】：山西大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X773

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本文編號(hào)：1380066