【摘要】：隨著產(chǎn)業(yè)結(jié)構(gòu)的不斷升級(jí),工業(yè)發(fā)展正在從傳統(tǒng)的粗放式發(fā)展向精細(xì)化、節(jié)約化邁進(jìn)。由于工業(yè)發(fā)展相對(duì)落后,導(dǎo)致目前我國(guó)的能源結(jié)構(gòu)仍然是以火電為主,其它形式為輔�；鹆Πl(fā)電即指燃燒煤炭推動(dòng)蒸汽輪機(jī)產(chǎn)生電能。煤炭燃燒產(chǎn)生的二氧化硫、固體顆粒物等污染物一直是污染環(huán)境的重要因素。面對(duì)環(huán)境保護(hù)的迫切需求,必須減少二氧化硫等污染物的排放,現(xiàn)在煤炭行業(yè)主要是采用低硫煤和脫硫除塵兩種方法來(lái)減少二氧化硫等污染物的排放。采用脫硫除塵技術(shù)是主流趨勢(shì),符合長(zhǎng)遠(yuǎn)發(fā)展的需要。本文研究出一套基于DSP的脫硫除塵離心泵流量控制系統(tǒng),實(shí)現(xiàn)了脫硫除塵過(guò)程中離心泵的智能控制和檢測(cè)。DSP具有運(yùn)算速度快,處理數(shù)據(jù)能力強(qiáng)的特點(diǎn),應(yīng)用DSP控制器是目前控制領(lǐng)域的趨勢(shì)。因此研究一款基于DSP的脫硫除塵離心泵流量控制系統(tǒng),對(duì)脫硫除塵控制系統(tǒng)具有重要意義。本文研究的主要內(nèi)容是：(1)研究脫硫除塵離心泵控制系統(tǒng)的控制方案。傳統(tǒng)的管路調(diào)節(jié)流量方法,在調(diào)節(jié)閥門開度的過(guò)程中會(huì)造成比較大的管路損失�，F(xiàn)在主流的離心泵調(diào)速系統(tǒng)主要是采用變頻調(diào)速原理。變頻調(diào)速主要包括恒壓比控制、轉(zhuǎn)差率控制和矢量控制。由于恒壓比控制簡(jiǎn)單便捷,應(yīng)用廣泛,因此本文采用恒壓比控制方式。(2)根據(jù)現(xiàn)代控制理論,對(duì)各主要組成元件分析建立數(shù)學(xué)模型,并建立控制系統(tǒng)的狀態(tài)空間表達(dá)式。(3)采用BODE圖和Lyapunov穩(wěn)定性分析方法,分析控制系統(tǒng)的穩(wěn)定性,能觀能控性。(4)由脫硫除塵離心泵流量控制系統(tǒng)的傳遞函數(shù)和狀態(tài)空間表達(dá)式,通過(guò)PID控制、極點(diǎn)配置、魯棒H∞控制等控制方法對(duì)控制系統(tǒng)進(jìn)行研究。(5)搭建基于DSP的脫硫除塵離心泵流量控制系統(tǒng)試驗(yàn)臺(tái),論述主要實(shí)驗(yàn)元件、實(shí)驗(yàn)電路連接、軟件和編程依據(jù)等。通過(guò)分析實(shí)驗(yàn)數(shù)據(jù)得出相對(duì)于傳統(tǒng)控制方式,基于DSP的脫硫除塵離心泵流量控制系統(tǒng)可以有效控制流量,提高流量控制系統(tǒng)性能。本文首次將DSP控制技術(shù)應(yīng)用到脫硫除塵離心泵流量控制系統(tǒng),可有效提高脫硫除塵離心泵流量控制的數(shù)字化水平,節(jié)能降耗,對(duì)降低行業(yè)能耗具有重要意義。采用恒壓比控制方式并結(jié)合DSP數(shù)字信號(hào)處理器,研究出基于DSP的脫硫除塵離心泵流量控制系統(tǒng)。對(duì)控制系統(tǒng)進(jìn)行靜態(tài)特性和動(dòng)態(tài)特性分析。針對(duì)基于DSP的脫硫除塵離心泵流量控制系統(tǒng)采用極點(diǎn)配置,魯棒H∞控制等優(yōu)化控制算法對(duì)控制系統(tǒng)進(jìn)行優(yōu)化分析。研究出基于DSP的脫硫除塵離心泵流量控制系統(tǒng)試驗(yàn)臺(tái),通過(guò)對(duì)實(shí)驗(yàn)數(shù)據(jù)的分析研究可以得出該控制系統(tǒng)具有控制誤差小、反應(yīng)迅速、運(yùn)行平穩(wěn)和節(jié)能效果優(yōu)良的特點(diǎn)。
[Abstract]:With the continuous upgrading of industrial structure, industrial development is moving from traditional extensive development to refinement and economization. Because the industrial development is relatively backward, the energy structure of our country is still dominated by thermal power and supplemented by other forms. Thermal power generation means burning coal to drive steam turbine to produce electric energy. Sulfur dioxide, solid particles and other pollutants produced by coal combustion have always been important factors to pollute the environment. In the face of the urgent need of environmental protection, it is necessary to reduce the emission of sulfur dioxide and other pollutants. At present, coal industry mainly adopts low sulfur coal and desulphurization and dust removal to reduce the emission of sulfur dioxide and other pollutants. Desulphurization and dust removal technology is the mainstream trend and meets the needs of long-term development. In this paper, a set of flow control system of desulphurization and dust removal centrifugal pump based on DSP is developed, which realizes the intelligent control and detection of centrifugal pump in the process of desulphurization and dust removal. DSP has the characteristics of fast operation speed and strong data processing ability. The application of DSP controller is the trend in the field of control. Therefore, it is of great significance to study a flow control system of desulphurization and dust removal centrifugal pump based on DSP. The main contents of this paper are as follows: (1) the control scheme of desulphurization and dust removal centrifugal pump is studied. The traditional way of regulating the flow through the pipe will cause a great loss in the process of adjusting the opening of the valve. Now the mainstream centrifugal pump speed regulation system is mainly using frequency conversion speed regulation principle. Frequency conversion speed regulation mainly includes constant voltage ratio control, slip rate control and vector control. Because the constant pressure ratio control is simple and convenient, it is widely used in this paper. (2) according to the modern control theory, the mathematical model of the main components is established. The state space expression of the control system is established. (3) the stability of the control system is analyzed by using BODE diagram and Lyapunov stability analysis method. Observable controllability. (4) transfer function and state space expression of flow control system of desulphurization and dedusting centrifugal pump, through PID control, pole assignment, Robust H 鈭，

本文編號(hào)：2376274