Development of a Semi Active Suspension System for Lightweight Automobiles
Development of a Semi Active Suspension System for Lightweight Automobiles
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轻型汽车半主动悬架系统的开发
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
Sheetanshu Rajeev Tyagi
中科院分区：
文献类型：
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作者：
Sheetanshu Rajeev Tyagi
车辆悬架系统是影响车辆整体性能的重要因素。车辆的悬架系统执行多项任务，如保持轮胎与道路之间的接触，以及隔离车辆车架免受道路诱导的振动和冲击。为了改善悬架系统的性能，人们已经进行了大量的研究，通过改变阻尼系数来改变系统的频率响应。这项研究描述了这种阻尼器的发展。本研究的目的是设计、建模、制造和测试一种新型的半主动阻尼器。阻尼器由两个相互串联的独立电子控制单元组成。采用2自由度1/4小车模型对该系统进行了初步仿真，给出了阻尼器的性能曲线。在此基础上，建立了阻尼器的多次设计迭代模型，并利用MATLAB/SIMULINK模型对阻尼器的物理特性和流动特性进行了仿真。在设计和分析完成后，制造了阻尼器，并使用CenTiRe的冲击动力装置进行了测试。然后将试验结果与仿真结果进行比较，以确定阻尼器的性能。此外，还将动态阻尼器的结果与相对单一的半主动和被动阻尼器进行了比较。为轻型汽车开发半主动悬架系统Sheetanshu Tyagi一般受众摘要汽车的悬架负责保持足够的乘客舒适性，也负责保持轮胎与道路的接触。悬挂是汽车在高速转弯时能够吸收道路上的颠簸的主要原因之一。为了通过改变悬架的不同部分来改善悬架的性能，让乘客体验到更好的舒适性和操控性，人们一直在进行大量的研究。本论文的目的是设计一种新型的阻尼器来达到同样的目的。这种阻尼器基本上是由两个电子控制阻尼器组成的，一个放在另一个的上面。在传感器和执行器的帮助下，两个阻尼器都被主动控制，以提供最佳的性能。通过使用两个减振器，可以同时改善汽车的舒适性和操控性，这是目前市场上使用减振器基本上不可能做到的。阻尼器是在CenTiRe中设计和制造的。创建了双阻尼器的多次设计迭代，然后制造了其中一个设计。还建立了阻尼器的计算机模型，以便能够模拟阻尼器的性能，并将模型的结果与试验结果进行了比较。
Vehicle suspension systems play an integral role in influencing the overall performance of a vehicle. The suspension system of a vehicle performs multiple tasks, such as maintaining contact between the tires and the road and isolating the frame of the vehicle from road-induced vibration and shocks. A significant amount of research has been directed to improving the performance of the suspension system by varying the damping coefficient so as to alter the frequency response of the system. This study describes the development of such a damper. The goal of this research has been to design, model, fabricate and test a novel semi-active damper. The damper consists of two independent electronically controlled units placed in series with one another. The system was initially simulated using a 2 DOF quarter-car model and the performance characteristics of the damper were outlined. Following that, multiple design iterations of the damper were created and a MATLAB/Simulink model was used to simulate physical and flow characteristics of the damper. After the design and analysis was complete, the damper was fabricated and tested using a shock dyno at CenTiRe. The test results were then compared to the simulation results so as to confirm performance of the damper. Additionally, the results obtained on the dyno were then compared against that of a relative single semi-active and passive damper. Development of a Semi-active Suspension System for Lightweight Automobiles Sheetanshu Tyagi GENERAL AUDIENCE ABSTRACT Suspension in cars is responsible for maintaining adequate amount of passenger comfort and also for maintaining tire contact with the road. Suspension is one of the primary reasons cars can absorb bumps on the road while cornering at high speeds. There has been a continuous amount of research to improve the performance of suspension by changing different parts of the suspension so that passengers can experience better comfort and handling. The objective of this thesis is to design a new damper which accomplishes the same. This damper essentially consists of two electronically controlled dampers placed one on top of the other. Both dampers are actively controlled with the help of sensors and actuators so as to offer optimum performance. By using two dampers, comfort and handling of the car can be simultaneously improved, something that is essentially not possible by using dampers that are currently in the market. The damper was designed and fabricated in CenTiRe. Multiple design iterations of the double damper were created and one of the designs was then fabricated. A computer model of the damper was also created so as to be able to simulate the performance of the damper and the results obtained from the model were compared to the results obtained from the tests.