外文翻译-基于MATLAB的汽车振动控制仿真(10页).doc
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1、-外文翻译-基于MATLAB的汽车振动控制仿真分类号编 号成 绩本科生毕业设计 (论文)外 文 翻 译原 文 标 题Study on Automobile Vibration System Based on MATLAB译 文 标 题 基于MATLAB的汽车振动控制仿真作者所在系别机械系作者所在专业车辆工程 作者所在班级B13142作 者 姓 名吴祥瑞作 者 学 号201322209指导教师姓名白亚双指导教师职称讲师完 成 时 间2017年3月 北华航天工业学院教务处制-第 6 页密 级译文标题Study on Automobile Vibration System Based on MATL
2、AB原文标题 基于MATLAB的汽车振动控制仿真作 者张亚军译 名Yajun Zhang国 籍中国原文出处武汉理工大学学报With the social progress and development, the car has become one of the basic tools of land transport. In order to keep the passengers comfortable, the goods are not damaged by the vibration of the transport, it is necessary to analyze the
3、 vibration performance of the car. Therefore, since the car has been, since its vibration analysis began. As the cars input is a random input of the road, and for the mechanical system of random vibration, basically from the last century, the beginning of the fifties. Since the beginning of the last
4、 century, due to the development of electronic computer technology, making the computer widely used in various fields, at the same time, due to the rapid Fourier transform algorithm (FF) T the emergence and development of random vibration research makes rapid development. In the country, Guo Konghui
5、 published in 1976 in the car technology on the car vibration and cargo statistical analysis and suspension system parameter selection article, is the first in the domestic automotive academic published on the application of random vibration theory of the car Vibration of the article. This paper dis
6、cusses two simplified degrees of simplified vehicle driving vibration model. In the random road input under the various responses, the car on the typical actual road driving vibration and cargo statistics, and also analyzes the suspension parameters on the impact of various responses. Subsequently,
7、Zhang Hongxin and beard are equal to 1983 published in the Journal of Jilin University, BJ a 212A light off-road vehicle random vibration simulation and experimental analysis, a paper, combined with the BJ-212A light sport utility vehicle ride on the study, the car The five-degree-of-freedom vibrati
8、on system model is simplified and the response of the vehicle under the road surface excitation is calculated by using some structural parameters which can be obtained in the design stage. In the early 1980s, Wang Zhongfan discussed the problem of nine degrees of freedom automobile model and its sol
9、ution, and overcomes the shortcomings of single-degree-of-freedom or two-degree-of-freedom vehicle vibration model, which is difficult to analyze deeply in automobile theory. In recent years, many specialized software packages have been developed for dynamic analysis, foreign countries have a variet
10、y of types of large-scale general-purpose software, these common software in the machinery, vehicles and other engineering areas of complex dynamic analysis. Such as some more rigid body kinematics software. But the software on the one hand so that it is very high price, on the other hand, the user
11、for security reasons, should develop their own software.According to the vibration theory, the degree of freedom of the system is the complete description of the system at any time and any position is required for the number of independent coordinates, the following analysis only consider the car wh
12、en the vertical vibration of the required degree of freedom. First of all, the four wheels on the car axle shaft head are independent of each other, it is obvious that the need for four degrees of freedom. Secondly, for the frame, the assumption that the frame plane is horizontal, so that the vibrat
13、ion of the frame in the horizontal plane requires only one coordinate. For any point on the frame, its position (referring to the vertical height, the following if no special statement, are so) only a coordinate to describe. From the cars point of view, the cars roll movement and tumbling movement w
14、ill make the frame is impossible to maintain the horizontal state. Both of these movements make the position of any point on the car frame change. Thus, when the frame is still flat, three separate coordinates are required to describe the position of any point on the frame. From another point of vie
15、w, these two movements make the car frame into a spatial plane. According to the non-collinear three points to determine a set of knowledge of the plane to know that any of the four suspension nodes in any three, you can determine the space plane. In other words, the results of the roll movement and
16、 the roll movement can be represented by the position of the three nodes. Therefore, the use of the location of these three nodes to determine the location of any position on the plane of the car, the car driving process, the frame will inevitably bend vibration, due to the structure of the frame, t
17、hat is, the stiffness of the beam is much greater than the rigidity of the stringer , So that the bending deformation of the frame can be mainly the bending deformation of the stringer. Therefore, you can only consider the bending of the frame beam, ignoring the bending of the beam, that the cars ho
18、rizontal line in the movement still maintain a straight line state. Due to the bending of the stringer, the frame no longer maintains the plane state, and because of the lateral.The line remains a straight line in motion, it becomes a regular surface, and the position of any point on the surface is
19、described by four independent coordinates. It can be understood that at the beginning, it is three independent coordinates to determine its position in the space after the fourth independent coordinate (ie, the bending freedom of the frame) to modify its position in the space, this modification is w
20、ith the first three Coordinate independent. Therefore, four coordinate descriptions are required. The degree of freedom of bending of the frame is reflected by the position of the cars center of mass. (See the derivation of the equation of motion.) In addition to bending, the frame because there are
21、 four suspension nodes, the four nodes of the location is changing, will inevitably make the frame torsional deformation, the torsional deformation and bending deformation can be considered Is carried out independently. Similar to the understanding of bending deformation, the torsional deformation a
22、gain changes the position of any point on the frame, and this modification is independent of the four degrees of freedom of the previous Syria. So this is the fifth freedom of the frame. In summary, the description of the frame requires five degrees of freedom. Finally, because the driver is also co
23、nsidering the vibration of the driver, and the driver is through the seat and the plane plane contact, does not belong to any point on the frame. So this is a new degree of freedom.Therefore, when only the vertical vibration of the vehicle is considered, the above-mentioned ten degrees of freedom is
24、 used to analyze the vehicle vibration system. Using the analytical mechanics method, from the overall system to the column equation. It generally uses the generalized coordinates to determine the position of the system, with kinetic energy and the number of pure generations to describe the amount o
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