【摘要】：隨著我國工業(yè)制造業(yè)和信息技術(shù)的飛速發(fā)展，汽車已經(jīng)成為人們生活中的必需品。而隨著人們對于汽車各方面性能的不斷提升以及法律法規(guī)對汽車尾氣排放等要求的日益嚴格，發(fā)動機控制技術(shù)得到越來越廣泛和深入的發(fā)展。針對目前最先進的高壓共軌燃油噴射系統(tǒng)國內(nèi)并沒有自主的知識產(chǎn)權(quán)這一問題，本文對該系統(tǒng)軟件國產(chǎn)化中的噴油控制策略實現(xiàn)進行了開創(chuàng)性的設(shè)計。 文章針對高壓共軌燃油噴射系統(tǒng)實現(xiàn)中需要涉及的問題，研究了高壓共軌系統(tǒng)的相關(guān)知識。在闡述了高壓共軌系統(tǒng)的基本概念、原理和方法的基礎(chǔ)上，，介紹了該系統(tǒng)的相關(guān)技術(shù)；針對噴油控制分析了PID控制算法，分別利用位置型PID和增量型PID對系統(tǒng)的數(shù)據(jù)和過程進行建模；給出了系統(tǒng)的控制策略設(shè)計，并設(shè)計了噴油控制結(jié)構(gòu)的實現(xiàn)方法，對工況識別的狀態(tài)轉(zhuǎn)移進行了仿真；實現(xiàn)了硬件在回路仿真。 基于高壓共軌燃油噴射系統(tǒng)仿真結(jié)果表明，經(jīng)過中心算法修正的增量型PID控制策略能夠很好的實現(xiàn)對燃油的利用率以及降低尾氣排放，達到了預(yù)期目的。為今后整體系統(tǒng)的臺架實驗以及商業(yè)化生產(chǎn)提供了理論依據(jù)與實際的支持。
[Abstract]:With the rapid development of industrial manufacturing and information technology in China, automobile has become a necessity in people's life. With the continuous improvement of vehicle performance and the increasingly stringent requirements of laws and regulations on vehicle exhaust emissions, engine control technology has been more and more extensive and in-depth development. Aiming at the problem that the most advanced high pressure common rail fuel injection system does not have independent intellectual property right at home, this paper has carried on the pioneering design to the injection control strategy in the software localization of this system. In this paper, the knowledge of high pressure common rail system is studied in view of the problems that need to be involved in the realization of high pressure common rail fuel injection system. Based on the introduction of the basic concepts, principles and methods of the high voltage common rail system, the related technologies of the system are introduced. The PID control algorithm is analyzed for fuel injection control. The data and process of the system are modeled by position PID and incremental PID respectively. The control strategy design of the system is given, and the realization method of the injection control structure is designed, the state transition of the working condition identification is simulated, and the hardware in-circuit simulation is realized. The simulation results based on high pressure common rail fuel injection system show that the incremental PID control strategy modified by the central algorithm can achieve good fuel utilization and reduce exhaust emissions, and achieve the desired purpose. It provides the theoretical basis and practical support for the whole system bench test and commercial production in the future.
【學位授予單位】：西安電子科技大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：U464.136

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