柴油機復(fù)合式調(diào)速器仿真研究
發(fā)布時間：2019-02-23 21:09
【摘要】：在全球動力“柴油化”的發(fā)展進程中,在應(yīng)對資源和環(huán)境雙重難題的挑戰(zhàn)下,如何使柴油機動力資源節(jié)約、環(huán)境友好成為當(dāng)下研究熱點。調(diào)速器以其自身對柴油機的重要調(diào)節(jié)作用在如今也受到廣泛重視。國內(nèi)對于調(diào)速領(lǐng)域的研究由于歷史條件和自身不足的制約目前仍存在較大的完善和填補空白的空間。針對調(diào)速器關(guān)鍵部件和系統(tǒng)建模與仿真研究比較少的現(xiàn)狀,本文以某復(fù)合式調(diào)速器為研究對象,分別對其機械液壓部分和電液部分的關(guān)鍵部件進行了仿真研究,包括如下幾個部分：結(jié)合國內(nèi)外調(diào)速器發(fā)展和研究現(xiàn)狀,針對所研究的復(fù)合式調(diào)速器,給出了其工作原理和數(shù)學(xué)模型,并建立了機械液壓部分控制滑閥和執(zhí)行機構(gòu)的AMESim仿真模型,建立了電液部分比例電磁鐵的Maxwell仿真模型。對機械液壓部分控制滑閥進行了特性分析,通過對初始參數(shù)的仿真和調(diào)速彈簧基本剛度、控制滑閥質(zhì)量、飛塊質(zhì)量等參數(shù)的變量研究對其進行優(yōu)化并加以驗證。對執(zhí)行機構(gòu)采用控制滑閥優(yōu)化參數(shù)配合執(zhí)行機構(gòu)的參數(shù)進行了仿真分析,得到控制滑閥響應(yīng)特性、壓力特性和動力活塞響應(yīng)特性。對電液部分比例電磁鐵進行了特性分析,得出了電磁力與激勵電流之間的關(guān)系和電磁力與推桿位移之間的關(guān)系,并對其進行了多組變量研究。仿真結(jié)果表明：機械液壓部分在原始參數(shù)下其控制滑閥響應(yīng)時間需要5.2s且震蕩明顯,調(diào)速彈簧基本剛度、控制滑閥質(zhì)量、飛塊質(zhì)量等參數(shù)對其工作過程影響較大。經(jīng)過參數(shù)優(yōu)化之后,可將響應(yīng)時間縮短到0.2s,執(zhí)行機構(gòu)能夠快速準(zhǔn)確的完成輸出軸位移變化以適應(yīng)負載的改變。電液部分比例電磁鐵參數(shù)設(shè)置得當(dāng),在額定電流作用下,比例電磁鐵有效的推桿位移在0.5mm～4.5mm之間,電磁力平均值保持151N,與所研究的比例電磁鐵額定有效行程4mm和額定吸力145N基本相符。
[Abstract]:In the development process of global power "diesel", how to save diesel engine power resources and how to make the environment friendly becomes the current research hotspot under the challenge of dealing with the dual problem of resources and environment. The governor has been paid more and more attention because of its important regulating function on diesel engine. At present, there is still a great space to perfect and fill the blank in the research of speed regulation field in China because of the limitation of historical conditions and its own shortcomings. In view of the lack of modeling and simulation of the key parts and systems of the governor, this paper takes a compound governor as the research object, and simulates the key parts of the mechanical hydraulic part and the electro-hydraulic part, respectively. It includes the following parts: according to the development and research status of the governor at home and abroad, the working principle and mathematical model of the composite governor are given. The AMESim simulation model of mechanical hydraulic partial control slide valve and actuator and the Maxwell simulation model of electro-hydraulic partial proportional electromagnet are established. The characteristics of the mechanical hydraulic partial control slide valve are analyzed and optimized and verified by the simulation of the initial parameters and the basic stiffness of the governing spring, the quality control of the slide valve, the mass of the flying block, and so on. The optimization parameters of the control slide valve and the parameters of the actuator are simulated and analyzed. The response characteristics of the control slide valve, the pressure characteristic and the dynamic piston response characteristic are obtained. The characteristics of electrohydraulic partial proportional electromagnet are analyzed. The relationship between electromagnetic force and excitation current and between electromagnetic force and push rod displacement is obtained, and a number of variables are studied. The simulation results show that the response time of the mechanical hydraulic part under the original parameters is 5.2s and the vibration is obvious. The basic stiffness of the speed regulating spring, the quality of the control valve and the mass of the flying block have great influence on the working process of the sliding valve. After parameter optimization, the response time can be shortened to 0.2 s, and the actuator can quickly and accurately complete the displacement change of output shaft to adapt to the change of load. The electrohydraulic partial proportional electromagnet parameters are properly set. Under the action of rated current, the effective push rod displacement of the proportional electromagnet is between 0.5mm~4.5mm and the average electromagnetic force remains 151N, It is basically consistent with the rated effective stroke 4mm and the rated suction 145N of the proportional electromagnet.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TK423
[Abstract]:In the development process of global power "diesel", how to save diesel engine power resources and how to make the environment friendly becomes the current research hotspot under the challenge of dealing with the dual problem of resources and environment. The governor has been paid more and more attention because of its important regulating function on diesel engine. At present, there is still a great space to perfect and fill the blank in the research of speed regulation field in China because of the limitation of historical conditions and its own shortcomings. In view of the lack of modeling and simulation of the key parts and systems of the governor, this paper takes a compound governor as the research object, and simulates the key parts of the mechanical hydraulic part and the electro-hydraulic part, respectively. It includes the following parts: according to the development and research status of the governor at home and abroad, the working principle and mathematical model of the composite governor are given. The AMESim simulation model of mechanical hydraulic partial control slide valve and actuator and the Maxwell simulation model of electro-hydraulic partial proportional electromagnet are established. The characteristics of the mechanical hydraulic partial control slide valve are analyzed and optimized and verified by the simulation of the initial parameters and the basic stiffness of the governing spring, the quality control of the slide valve, the mass of the flying block, and so on. The optimization parameters of the control slide valve and the parameters of the actuator are simulated and analyzed. The response characteristics of the control slide valve, the pressure characteristic and the dynamic piston response characteristic are obtained. The characteristics of electrohydraulic partial proportional electromagnet are analyzed. The relationship between electromagnetic force and excitation current and between electromagnetic force and push rod displacement is obtained, and a number of variables are studied. The simulation results show that the response time of the mechanical hydraulic part under the original parameters is 5.2s and the vibration is obvious. The basic stiffness of the speed regulating spring, the quality of the control valve and the mass of the flying block have great influence on the working process of the sliding valve. After parameter optimization, the response time can be shortened to 0.2 s, and the actuator can quickly and accurately complete the displacement change of output shaft to adapt to the change of load. The electrohydraulic partial proportional electromagnet parameters are properly set. Under the action of rated current, the effective push rod displacement of the proportional electromagnet is between 0.5mm~4.5mm and the average electromagnetic force remains 151N, It is basically consistent with the rated effective stroke 4mm and the rated suction 145N of the proportional electromagnet.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TK423
【參考文獻】
相關(guān)期刊論文 前1條
1 韓巍,陳嘉福,夏煥錦,包s，
本文編號：2429204
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