MATLAB软件在汽车悬架系统的模拟与分析中的应用

下载后可任意编辑摘要汽车悬架系统是整个汽车中非常重要的一个环节，它性能的好坏直接影响到汽车的平顺性和安全性，而主动悬架系统能使汽车的乘坐舒适性以及操纵稳定性和安全性得到很大程度的提高，因此，主动悬架系统是现代汽车的一个进展方向。 本文分别对汽车的被动悬架系统和主动悬架系统建立了双轴四自由度的模型， 列出了这两种模型的状态方程，并结合现代控制理论中的线性调节器理论对主动悬架的控制原理进行了分析。本人在分析悬架系统工作特性的基础上使用了c 语言对MATLAB软件进行了二次开发，开发出的这套软件它能对不同型号的被动悬架系统和主动悬架系统汽车进行模拟仿真，并进行分析，因此命名为SAS软件(以下简称SAS)。利用SAS软件对被、主动悬架进行了模拟分析，根据模拟的结果对被动悬架和主动悬架汽车的性能进行了对比分析，并对其平顺性进行了评价。关键词:悬架、主动、被动、MATLAB 模拟ABSTACTSuspension system is one of the most important part in the whole automobiles. Its performance influences directly on ride comfort and safety of auto. Active-suspension is able to improve greatly the performances of auto such as ride comfort, security and stability. Hence developing and designing the active-suspension is the important direction in the future.In the paper ,I set up two four-freedom models about passive suspension and active-suspension of vehicles, and list their state space equations. Moreover, I analyze the controlling principle of active-suspension by using the modern controlling theory.I develop a set of software based on the MATLAB software by using C language according to suspension performance. Its main functions are to simulate the passive-suspension and active suspension about vehicles whose construction parameters are variable and then analyze the suspension. So I call this software SAS software (short for SAS). Using SAS software, I simulate the passive-suspension and active-suspension. According to the result after simulating, I analyze a...