【摘要】：能源危機(jī)和環(huán)境污染導(dǎo)致了對(duì)發(fā)動(dòng)機(jī)動(dòng)力性、經(jīng)濟(jì)性和排放性的要求日益嚴(yán)格，新型發(fā)動(dòng)機(jī)的研制成為內(nèi)燃機(jī)研究的重點(diǎn)課題。對(duì)置活塞二沖程柴油機(jī)正是在這種背景下提出的一種新型動(dòng)力裝置，它具有高功率密度、平衡性好、噪聲低、燃料適應(yīng)性強(qiáng)和高度柔性布置等優(yōu)勢(shì)。本文所研究的對(duì)置活塞二沖程柴油機(jī)采用高壓共軌燃油系統(tǒng)，高壓共軌系統(tǒng)不僅可以實(shí)現(xiàn)每缸的兩個(gè)噴油器噴油量、噴油正時(shí)的精確控制，還可以實(shí)現(xiàn)噴油壓力和噴油率的靈活控制。 本文研究了運(yùn)用基于模型的狀態(tài)反饋控制器設(shè)計(jì)方法，闡述了非線性模型線性化的四種方法并進(jìn)行了比較；研究了將線性化的狀態(tài)空間模型進(jìn)行狀態(tài)反饋控制器設(shè)計(jì)的方法，將此方法應(yīng)用于對(duì)置活塞二沖程柴油機(jī)的控制策略研究。 綜合考慮了對(duì)置活塞二沖程柴油機(jī)起動(dòng)快速、平順、可靠的控制要求，本文建立了面向最優(yōu)控制算法設(shè)計(jì)的狀態(tài)空間模型，分別應(yīng)用Bang-Bang以及LQR控制算法設(shè)計(jì)了發(fā)動(dòng)機(jī)的起動(dòng)控制策略，通過(guò)Matlab/Simulink進(jìn)行了仿真，，分別驗(yàn)證了兩種控制算法的控制效果，結(jié)合兩種控制算法各自的優(yōu)勢(shì)，最終得到對(duì)置活塞二沖程柴油機(jī)的最優(yōu)起動(dòng)過(guò)程控制策略，并在對(duì)置活塞二沖程柴油機(jī)上進(jìn)行了臺(tái)架試驗(yàn)驗(yàn)證。 本文研究了對(duì)置活塞二沖程柴油機(jī)共軌系統(tǒng)的特點(diǎn)及工作原理，依據(jù)液體的體積彈性模量理論，將腔體內(nèi)的燃油作為研究對(duì)象，結(jié)合發(fā)動(dòng)機(jī)實(shí)際的共軌系統(tǒng)參數(shù)，分別建立了高壓泵、共軌及噴油器腔體內(nèi)的燃油壓力數(shù)學(xué)子模型，依據(jù)其工作原理，最終獲得對(duì)置活塞二沖程柴油機(jī)共軌系統(tǒng)的數(shù)學(xué)模型。運(yùn)用LPV系統(tǒng)線性化理論，得到系統(tǒng)的狀態(tài)空間模型，同時(shí)，應(yīng)用狀態(tài)反饋控制器設(shè)計(jì)方法，得到對(duì)置活塞二沖程柴油機(jī)軌壓最優(yōu)控制算法，獲得的最優(yōu)控制算法得到仿真與對(duì)置活塞二沖程柴油機(jī)臺(tái)架試驗(yàn)驗(yàn)證。
[Abstract]:Energy crisis and environmental pollution have led to the increasingly stringent requirements for engine power, economy and emissions. The development of new engines has become a key issue in the research of internal combustion engines. It is under this background that a new type of power device is put forward, which has the advantages of high power density, good balance, low noise, strong fuel adaptability and highly flexible arrangement. In this paper, the contrasting piston two-stroke diesel engine adopts high-pressure common-rail fuel system. The high-pressure common-rail system can not only realize the accurate control of the injection quantity and injection timing of two injectors per cylinder. The flexible control of injection pressure and injection rate can also be realized. In this paper, the design method of state feedback controller based on model is studied, and four methods of linearization of nonlinear model are discussed and compared. The design method of state feedback controller based on linearized state space model is studied. The method is applied to study the control strategy of two stroke diesel engine with opposite piston. Considering the requirements of fast, smooth and reliable starting for a two-stroke diesel engine with contrasting piston, a state-space model for optimal control algorithm design is established in this paper. The engine start control strategy is designed by using Bang-Bang and LQR control algorithms respectively. The simulation results of the two control algorithms are carried out by Matlab/Simulink. The control effects of the two control algorithms are verified, and the respective advantages of the two control algorithms are combined. Finally, the optimal starting process control strategy of the two stroke diesel engine with opposite piston is obtained, and the bench test is carried out on the two stroke diesel engine with opposite piston. In this paper, the characteristics and working principle of the common rail system of a two-stroke diesel engine with opposite piston are studied. According to the theory of volume elastic modulus of liquid, the fuel oil in the cavity is taken as the research object, and the parameters of the common rail system of the engine are combined with the actual parameters of the common rail system. The mathematical models of fuel pressure in high pressure pump, common rail and injector cavity are established respectively. According to its working principle, the mathematical model of common rail system of two stroke diesel engine with opposite piston is obtained. By using the linearization theory of LPV system, the state space model of the system is obtained. At the same time, the optimal control algorithm for rail pressure of a two-stroke diesel engine with opposite piston is obtained by using the design method of state feedback controller. The obtained optimal control algorithm is verified by simulation and bench test of two stroke diesel engine with opposite piston.
【學(xué)位授予單位】：北京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TK423

【參考文獻(xiàn)】

中國(guó)期刊全文數(shù)據(jù)庫(kù) 前10條

1 戴海峰;魏學(xué)哲;孫澤昌;;V-模式及其在現(xiàn)代汽車(chē)電子系統(tǒng)開(kāi)發(fā)中的應(yīng)用[J];機(jī)電一體化;2006年06期

2 陳釗;;低溫對(duì)柴油機(jī)起動(dòng)性能的影響與改善[J];煤礦機(jī)械;2006年07期

3 錢(qián)龍文,黃卓耀,張開(kāi)惠,吳吉湘,米壽章;渦流燃燒室柴油機(jī)起動(dòng)時(shí)噴油與著火過(guò)程的研究[J];內(nèi)燃機(jī)工程;1990年02期

4 莫瑋,鄂加強(qiáng),趙延明;嚴(yán)寒條件下車(chē)輛柴油機(jī)冷啟動(dòng)性能研究[J];內(nèi)燃機(jī)工程;2002年05期

5 于世濤;周興利;楊曉峰;龔元明;楊林;卓斌;;基于扭矩控制的電控單體泵柴油機(jī)仿真模型的研究[J];內(nèi)燃機(jī)工程;2006年02期

6 石磊;鄧康耀;崔毅;張有;鄒龍;;基于VxD-PC技術(shù)的高壓共軌控制系統(tǒng)開(kāi)發(fā)[J];內(nèi)燃機(jī)工程;2006年04期

7 徐勁松;申立中;王貴勇;畢玉華;;高壓共軌柴油機(jī)軌壓復(fù)合控制策略的研究[J];內(nèi)燃機(jī)工程;2012年02期

8 張曉力,王尚勇,張幽彤;柴油機(jī)電控共軌噴油系統(tǒng)發(fā)展現(xiàn)狀[J];內(nèi)燃機(jī);2002年02期

9 劉傳李;淺議能源技術(shù)、環(huán)境保護(hù)與內(nèi)燃機(jī)工業(yè)[J];內(nèi)燃機(jī);1994年03期

10 汪洋,蘇萬(wàn)華,謝輝,孫芳,林鐵堅(jiān),裴毅強(qiáng);共軌蓄壓式電控噴射系統(tǒng)的噴油規(guī)律對(duì)發(fā)動(dòng)機(jī)燃燒特性及排放性能的影響[J];內(nèi)燃機(jī)學(xué)報(bào);2002年03期

本文編號(hào)：2401064