双筒充气式减振器阻尼特性研究与仿真分析

发布时间：2018-12-28 15:37

【摘要】：现阶段,主动和半主动悬架系统技术应用日益普遍。由于传统的被动式液压减振器存在油液易乳化、临界速度低、噪声大等缺点,不再适用于新型悬架系统,可调阻尼减振器的研究便获得了前所未有的重视。在诸多技术中,充气技术的应用使得减振器的工作效果得到了很大的改善,综合性能更为强大,从而受到了更多人的喜爱。充气式减振器在高端品牌汽车中被应用的比较普遍,使得汽车的性能得到了很大的改善。本文对一种双筒充气式减振器进行研究,通过分析该减振器的结构和工作原理,研究其阻尼特性,对控制方法进行仿真,从而为电控技术的实现打下基础。此外,本文的研究将在一定程度上对我国自主研发的车用减振器起到借鉴作用。本文首先对可调阻尼减振器作了充分的介绍,阐述了其发展历史和目前对该减振器的研究现状,并对不同种类的减振器的优缺点进行了分析。其中,重点对双筒手动可调减振器进行了研究和阐述,并对该减振器的主要性能以及技术参数进行了介绍。其次,本文在研究过程中,充分借鉴流体力学理论知识,建立了双筒手动阻尼可调减振器的数学模型,并进行MATLAB仿真分析,通过得到的一系列数据和曲线图,分析了减振器各个结构参数变化对减振器阻尼值的影响,确定了可控量,从而为模糊PID控制器及电子控制单元设计奠定理论基础。最后针对双筒充气式减振器,设计模糊PID控制器,并进行Simulink仿真测试其控制效果,在以上研究内容的基础上,最后提出电控单元设计方案,完成了部分硬件电路的设计。
[Abstract]:At present, active and semi-active suspension systems are increasingly widely used. Because the traditional passive hydraulic shock absorber has the disadvantages of easy emulsification, low critical speed and high noise, it is no longer suitable for the new suspension system, so the research of adjustable damping damper has been paid more attention than ever. In many technologies, the application of inflatable technology has greatly improved the working effect of shock absorber, and the comprehensive performance is more powerful, so it has been loved by more people. Inflatable shock absorber is widely used in high-end brand cars, which greatly improves the performance of cars. In this paper, a double cylinder inflatable shock absorber is studied. By analyzing the structure and working principle of the damper, the damping characteristic of the damper is studied, and the control method is simulated, thus laying a foundation for the realization of electronic control technology. In addition, the research in this paper will be used as a reference for vehicle shock absorber developed independently in our country to some extent. In this paper, the adjustable damping damper is introduced, its development history and current research status are described, and the advantages and disadvantages of different kinds of shock absorbers are analyzed. The main performance and technical parameters of the double cylinder manual adjustable shock absorber are introduced. Secondly, in the course of the research, the mathematical model of double cylinder manual damping adjustable shock absorber is established by referring to the theory of hydrodynamics, and the MATLAB simulation analysis is carried out, and a series of data and curves are obtained. The influence of the structural parameters of the damper on the damping value of the absorber is analyzed, and the controllable quantity is determined, which lays a theoretical foundation for the design of the fuzzy PID controller and the electronic control unit. Finally, the fuzzy PID controller is designed for the double cylinder inflatable shock absorber, and the control effect is tested by Simulink simulation. Based on the above research content, the design scheme of the electronic control unit is put forward, and some hardware circuits are designed.
【学位授予单位】：长春工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U463.33

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