本文選題：電動汽車 + 熱泵型空調(diào)��； 參考：《中原工學(xué)院》2015年碩士論文

【摘要】：當(dāng)前,全球氣候及環(huán)境問題日趨嚴(yán)峻,汽車給環(huán)境帶來的影響越來越明顯,因此,新能源汽車的研究日趨重要。電動汽車作為新能源汽車的一部分,這幾年得到了快速發(fā)展,許多大的汽車廠家都加入了研究生產(chǎn)電動汽車行列。電動汽車空調(diào)是電動汽車必不可少的一部分,而空調(diào)控制器控制著整個空調(diào)系統(tǒng),對電動汽車的續(xù)航有著直接影響。電子膨脹閥控制器是整個空調(diào)制冷系統(tǒng)的一部分,對其研究具有一定的意義,現(xiàn)有電子膨脹閥控制器都相對獨(dú)立于空調(diào)控制系統(tǒng)中,在使用過程中,當(dāng)空調(diào)系統(tǒng)的參數(shù)出現(xiàn)變化時,控制器不易作出調(diào)整,應(yīng)用不靈活,同時系統(tǒng)結(jié)構(gòu)復(fù)雜,成本高昂,針對這一系列的特點(diǎn),本文研發(fā)設(shè)計了一種基于FPGA的電動汽車空調(diào)電子膨脹閥控制器。本文通過對電子膨脹閥控制器需求分析,對控制器控制策略和方式進(jìn)行了分析論證,對FPGA芯片、溫度、壓力傳感器等進(jìn)行了芯片選型,并針對電子膨脹閥控制器的特點(diǎn)設(shè)計和論證了總體方案。本文詳細(xì)分析了過熱度控制的方法,即通過壓力、溫度傳感器測量蒸發(fā)器出口和入口的溫度和壓力,計算和分析了溫度壓力與過熱度的關(guān)系,并通過實(shí)驗(yàn)的方式找出最優(yōu)控制參數(shù),通過參數(shù)選取對閥門開度的控制,優(yōu)化整合的PID算法控制邏輯和控制方案,并利用美國Altera公司的硬件開發(fā)工具QuartusⅡ?qū)﹄娮优蛎涢y控制器系統(tǒng)進(jìn)行頂層設(shè)計,用C語言對電子膨脹閥控制器系統(tǒng)的軟件的開發(fā)。本文詳細(xì)介紹了系統(tǒng)主要模塊,溫度采集模塊、壓力采集模塊、A/D轉(zhuǎn)換模塊、LCD顯示模塊等軟硬件的開發(fā)流程和程序?qū)崿F(xiàn),并對各模塊進(jìn)行仿真波形及部分模塊的測試�；贔PGA的強(qiáng)大功能,設(shè)計的電子膨脹閥控制器以模塊化的方式嵌入整個空調(diào)控制器中。通過完整的測試和實(shí)驗(yàn),結(jié)果表明,用FPGA作為主控芯片的電子膨脹閥控制器系統(tǒng),與傳統(tǒng)的單片機(jī)或者ARM相比,具有體積小,設(shè)計周期短,可移植性強(qiáng),并且在線可編程等優(yōu)點(diǎn),在未來,高度集成化、智能化的汽車電控系統(tǒng),采用FPGA作為芯片可以有效滿足更多車載設(shè)備模塊的集成,有利于系統(tǒng)設(shè)計的小型化,同時降低了汽車成本,并為汽車內(nèi)部節(jié)省了空間。最后,通過對電子膨脹閥控制器控制性能及結(jié)果的研究分析,對整個控制器的特點(diǎn)進(jìn)行了總結(jié)與分析,并對未來提出展望和期待。
[Abstract]:At present, the global climate and environmental problems are becoming more and more serious, and the impact of vehicles on the environment is becoming more and more obvious. Therefore, the research of new energy vehicles is becoming more and more important. As a part of new energy vehicles, electric vehicles have been developed rapidly in recent years, and many large automobile manufacturers have joined the ranks of research and production of electric vehicles. Electric vehicle air conditioning is an essential part of electric vehicle, and the air conditioning controller controls the whole air conditioning system, which has a direct impact on the electric vehicle's life. The electronic expansion valve controller is a part of the whole air-conditioning refrigeration system, which has certain significance. The existing electronic expansion valve controller is relatively independent from the air conditioning control system, and in the process of use, the electronic expansion valve controller is relatively independent of the air conditioning control system. When the parameters of the air conditioning system change, the controller is not easy to adjust, the application is not flexible, and the system structure is complex and the cost is high. In this paper, an electronic expansion valve controller for electric vehicle air conditioning based on FPGA is designed and developed. By analyzing the demand of electronic expansion valve controller, the control strategy and mode of the controller are analyzed and demonstrated. The chip selection of FPGA chip, temperature and pressure sensor is given. According to the characteristics of the electronic expansion valve controller, the overall scheme is designed and demonstrated. In this paper, the method of superheat control is analyzed in detail, that is, the temperature and pressure at outlet and inlet of evaporator are measured by pressure and temperature sensor, and the relationship between temperature and pressure is calculated and analyzed. The optimal control parameters are found by experiment, and the control logic and control scheme of integrated PID algorithm are optimized by selecting the parameters to control the valve opening. The top-level design of the electronic expansion valve controller system is carried out by using the hardware development tool Quartus 鈪，

本文編號：1831507