汽车排气微粒扩散凝聚建模分析与控制

项目名称： 汽车排气微粒扩散凝聚建模分析与控制

项目编号： No.61503215

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 自动化技术、计算机技术

项目作者： 孙洁

作者单位： 山东大学

项目金额： 21万元

中文摘要： 汽车尾气已成为大气污染的“罪魁祸首”，因此迫切需要研究汽车减排控制。虽然已有各种治理汽车尾气技术不断成熟并被推广应用，但因尚未从本质上深刻揭示汽车尾气排放微粒生成机理而未达到最佳效果，亟需寻求新理论予以解决。汽车排气微粒扩散运动不但具有典型的分形结构，而且其凝聚生长又是一种三维非线性动力行为，对其控制问题研究极具挑战性。本项目拟采用新方法研究汽车减排控制，将基于分形理论对汽车排气微粒扩散凝聚建模，分析三角函数、多项式函数和广义函数形式环境干扰项和微粒凝聚概率的数量关系，研究微粒扩散凝聚环境干扰控制，以及广义函数形式的定区域控制。进而分析周围噪音和生长速度的数量关系，研究微粒扩散凝聚速度控制以及对流离散系统空间分形集辨识控制问题。微粒扩散凝聚控制使得汽车排放微粒在指定方向上加速形成微粒团，加速沉降，降低汽车尾气对大气污染的分担率，对汽车减排控制技术提供重要的理论支撑。

中文关键词： 排放控制；尾气控制；颗粒物控制；分形控制

英文摘要： Automobile exhaust has become the arch-criminal of atmospheric pollution, so there is an urgent need to study the automobile emission control. All kinds of automobile exhaust treatment technology continues to mature and is widely used, but it has not yet been essentially profoundly revealed the formation mechanism of automobile exhaust particulate and does not achieve the best effect. Therefore it is necessary to seek new theory to solve. The automobile exhaust particle diffusion aggregation has a typical fractal structure as well as a kind of three-dimensional nonlinear dynamic behavior, which makes its research of the control problem more challenging. However, this project plans to adopt a new method to study the automobile emission control. Firstly, it will be based on the fractal theory to establish the mathematical model of automobile exhaust particle diffusion aggregation. Secondly, in the form of trigonometric function, polynomial function and generalized function, it will analyze the relationship between the number of environmental disturbance and particle aggregation probability. Thirdly, it will study the environmental interference control and directed control of particle diffusion aggregation. Furthermore, the project will analyze the relationship between the number of ambient noise and growth velocity. Meanwhile, it will study the particle diffusion aggregation speed control and the identification control of convection discrete system spatial fractal sets. As a consequence, particle diffusion aggregation control makes that the automobile emission particles accelerate the formation of particle clusters in the specified direction, and accelerate the settlement, thereby reducing the share rate of automobile exhaust pollution of the atmosphere. This study is of great theoretical value to raise automobile emission control technology.

英文关键词： emission control ;exhaust control;particulate control ;fractal control