柴油机复合式调速器仿真研究
发布时间：2019-02-23 21:09
【摘要】：在全球动力“柴油化”的发展进程中,在应对资源和环境双重难题的挑战下,如何使柴油机动力资源节约、环境友好成为当下研究热点。调速器以其自身对柴油机的重要调节作用在如今也受到广泛重视。国内对于调速领域的研究由于历史条件和自身不足的制约目前仍存在较大的完善和填补空白的空间。针对调速器关键部件和系统建模与仿真研究比较少的现状,本文以某复合式调速器为研究对象,分别对其机械液压部分和电液部分的关键部件进行了仿真研究,包括如下几个部分：结合国内外调速器发展和研究现状,针对所研究的复合式调速器,给出了其工作原理和数学模型,并建立了机械液压部分控制滑阀和执行机构的AMESim仿真模型,建立了电液部分比例电磁铁的Maxwell仿真模型。对机械液压部分控制滑阀进行了特性分析,通过对初始参数的仿真和调速弹簧基本刚度、控制滑阀质量、飞块质量等参数的变量研究对其进行优化并加以验证。对执行机构采用控制滑阀优化参数配合执行机构的参数进行了仿真分析,得到控制滑阀响应特性、压力特性和动力活塞响应特性。对电液部分比例电磁铁进行了特性分析,得出了电磁力与激励电流之间的关系和电磁力与推杆位移之间的关系,并对其进行了多组变量研究。仿真结果表明：机械液压部分在原始参数下其控制滑阀响应时间需要5.2s且震荡明显,调速弹簧基本刚度、控制滑阀质量、飞块质量等参数对其工作过程影响较大。经过参数优化之后,可将响应时间缩短到0.2s,执行机构能够快速准确的完成输出轴位移变化以适应负载的改变。电液部分比例电磁铁参数设置得当,在额定电流作用下,比例电磁铁有效的推杆位移在0.5mm～4.5mm之间,电磁力平均值保持151N,与所研究的比例电磁铁额定有效行程4mm和额定吸力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.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：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.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TK423
【参考文献】
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1 韩巍,陈嘉福,夏焕锦,包s，
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