齿轮参数对汽车自动变速器动力学性能影响规律的研究

发布时间：2018-05-01 01:35

本文选题：汽车自动变速器 + 齿轮参数　；参考：《合肥工业大学》2012年硕士论文

【摘要】：自动变速器与发动机一样同是汽车的心脏，，目前它已成为汽车整车的核心技术，是制约我国汽车产业进一步发展的瓶颈之一。现在国内关于自动变速器的研究主要集中在控制系统以及液压系统上，对于自动变速器的行星齿轮机构则研究较少，并且仅仅局限于对行星齿轮机构结构的研究，对于自动变速器齿轮特别是自动变速器齿轮参数的研究基本上没有。行星齿轮机构的力学特性直接关系到自动变速器的性能，特别其动态特性对行星齿轮机构的振动和噪声有很大的影响，而齿轮参数对齿轮系统的动态性能影响很大，因此研究齿轮参数问题对于改善自动变速器的振动和噪声有着重要的意义。本文以四挡AT辛普森式行星齿轮机构作为研究对象，利用参数化方法建立了系统模型，通过改变齿轮的基本参数（模数、螺旋角、变位量等）可快速建立不同齿轮参数的系统模型。通过对不同齿轮参数系统动力学性能的研究，获得了齿轮参数对系统固有特性的影响规律，以及齿轮变位量对系统振动的影响规律。经研究分析表明：齿轮参数的变化对辛普森系统的固有特性有很大的影响，随着齿轮模数和螺旋角的增大，辛普森系统的固有频率逐渐增大；变位量的变化对辛普森系统的固有特性基本没有影响；当齿轮的模数和变位量同时发生变化时，系统固有频率的变化主要取决于齿轮模数的改变；当齿轮的螺旋角和变位量同时发生变化时，系统固有频率的变化主要取决于齿轮螺旋角的改变；模数对系统固有特性的影响要强于螺旋角对系统固有特性的影响；齿轮参数对辛普森系统刚度的影响要远远超过齿轮参数对其质量的影响；随着齿轮变位量的增加，系统振动逐渐减小。总之，齿轮参数的变化对自动变速器行星齿轮系统的动力学性能有明显的影响，通过合理的选择齿轮参数可以有效地降低系统的振动，从而减小噪声。本文的研究结果为行星轮系的设计提供了参考依据和理论基础，同时为我国自主研发自动变速器（AT）齿轮传动系统提供了理论依据。
[Abstract]:As the heart of an automobile, automatic transmission is the heart of a car. At present, it has become the core technology of the vehicle. It is one of the bottlenecks that restrict the further development of the automobile industry in our country. Now the research on automatic transmission mainly focuses on the control system and the hydraulic system, and the research on the planetary gear mechanism of the automatic transmission. It is limited to the study of the structure of the planetary gear mechanism, and the research on the parameters of the automatic transmission gear, especially the automatic transmission gear, is basically not. The mechanical characteristics of the planetary gear mechanism are directly related to the performance of the automatic transmission, especially the dynamic characteristics of the planetary gear mechanism are very strong in the vibration and noise of the planetary gear mechanism. The influence of the gear parameters on the dynamic performance of the gear system is very important, so it is of great significance to study the gear parameters to improve the vibration and noise of the automatic transmission.
In this paper, the system model of four gear AT Simpson planetary gear mechanism is established by parameterized method. The system model of different gear parameters can be quickly established by changing the basic parameters of gear (modulus, helix angle, displacement quantity etc.). Through the study of the dynamic performance of different gear parameters system, the gear parameter is obtained. The effect of number on the inherent characteristics of the system and the influence of gear displacement on the system vibration are also discussed.
The analysis shows that the change of the gear parameters has a great influence on the inherent characteristics of the Simpson system. With the increase of the gear modulus and the helix angle, the inherent frequency of the Simpson system increases gradually. The change of the variation of the position of the gear has no effect on the inherent characteristics of the Simpson system; when the modulus and the displacement of the gear change simultaneously, the change of the gear's modulus and displacement is changed at the same time. The change of the inherent frequency of the system depends mainly on the change of the gear modulus. When the spiral angle and the displacement of the gear change at the same time, the change of the inherent frequency of the system depends mainly on the change of the helical angle of the gear; the influence of the modulus on the inherent characteristics of the system is stronger than the influence of the spiral angle on the inherent characteristics of the system; the gear parameter is the same. The influence of the stiffness of the Simpson system is much greater than that of the gear parameters. With the increase of the gear displacement, the vibration of the system decreases.
In a word, the change of the gear parameters has an obvious influence on the dynamic performance of the planetary gear system of the automatic transmission. Through the reasonable selection of the gear parameters, the vibration of the system can be effectively reduced and the noise is reduced. The results of this paper provide the reference basis and theoretical basis for the design of the planetary gear system, at the same time, it is independent research and development for our country. The automatic transmission (AT) gear transmission system provides a theoretical basis.

【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.41;U463.212

【参考文献】