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首页> 外文会议>ASME International Design Engineering Technical Conferences >LEARNING BY DOING: A SIMPLE EDUCATIONAL METHOD FOR MODELLING VEHICLE SUSPENSIONS
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LEARNING BY DOING: A SIMPLE EDUCATIONAL METHOD FOR MODELLING VEHICLE SUSPENSIONS

机译：作者：通过作做学习：一种用于造型车辆悬架的简单教育方法

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This paper examines the educational benefit of modeling and analyzing a quarter car suspension system to simulate the vehicle response to various road inputs. The response of the vehicle was considered both theoretically and experimentally. The primary goal of the study is to test the ability to integrate similar approaches in an educational setting to allow students to gain a "real world" perspective on their theoretical coursework. Typical engineering curriculum focuses heavily on theoretical computational models. However, some students have trouble relating this calculated data to practical occurrences. This paper outlines the challenges and considerations for implementing experimental procedures into common coursework to compare to theoretical calculated data. For the theoretical model, the equation of motion of the dynamic response of the suspension system was obtained using Lagrange's equation. Using a 2013 Jeep Wrangler Sport, the suspension spring constant, the tire spring constant, the tire damping coefficient, and the suspension damping coefficient were calculated or estimated experimentally (these parameters were used for both the theoretical and the experimental models). The combination of the MATLAB and Simulink files were used to produce visual representations of the response of the vehicle to road inputs. The experimental model is obtained using a combination of MATLAB and accelerometer data. The 2013 Jeep Wrangler was exposed to three different real-world inputs: a step up, a step down, and a sinusoidal input (a speed bump). The experimental and theoretical data is compared to exhibit trends of the vehicle to these road inputs. While the models do not align numerically, the trends of the experimental and theoretical data are shown to coincide for each of the responses. This paper will outline the quarter car model used and the mathematical model of it, the methods used to solve the model, the results obtained from the study, and the ability to integrate methods such as this into a classroom setting as a supplement.
机译：本文介绍了建模和分析四分之一汽车悬架系统的教育效益，以模拟对各种道路投入的车辆响应。从理论上和实验中考虑车辆的响应。该研究的主要目标是测试在教育环境中集成类似方法的能力，让学生在理论课程中获得“真实世界”的视角。典型的工程课程在很大程度上侧重于理论计算模型。但是，有些学生对实际出现的数据有关将此计算的数据与实际出现有问题。本文概述了将实验程序实施成共同课程的挑战和考虑，以比较理论计算数据。对于理论模型，使用拉格朗日等式获得悬架系统的动态响应的运动方程。使用2013吉普牧羊人运动，试验计算或估算轮胎弹簧常数，轮胎弹簧常数，轮胎阻尼系数和悬浮阻尼系数（这些参数用于理论和实验模型）。 Matlab和Simulink文件的组合用于生成车辆对道路输入的响应的视觉表示。使用MATLAB和加速度计数据的组合获得实验模型。 2013年Jeep Wrangler接触到三个不同的真实投入：一个加紧，下台，一个正弦输入（跳跃）。将实验和理论数据进行比较，以将车辆的趋势表现出对这些道路输入。虽然模型在数值上不对齐，但是显示实验和理论数据的趋势对于每个响应都是重合的。本文将概述所使用的四分之一汽车模型和其数学模型，用于解决模型的方法，从研究中获得的结果，以及将其作为补充的教室设置中的方法集成到教室设置中的能力。

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