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Analysis and optimization of air suspension system with independent height and stiffness tuning

机译:独立调节高度和刚度的空气悬架系统的分析和优化

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摘要

Suspensions play a crucial role in vehicle comfort and handling. Different types of suspensions have been proposed to address essential comfort and handling requirements of vehicles. The conventional air suspension systems use a single flexible rubber airbag to transfer the chassis load to the wheels. In this type of air suspensions, the chassis height can be controlled by further inflating the airbag; however, the suspension stiffness is not controllable, and it depends on the airbag volume and chassis load. A recent development in a new air suspension includes two air chambers (rubber airbags), allowing independent ride height and stiffness tuning. In this air suspension system, stiffness and ride height of the vehicle can be simultaneously altered for different driving conditions by controlling the air pressure in the two air chambers. This allows the vehicle's natural frequency and height to be adjusted according to the load and road conditions. This article discusses optimization of an air suspension design with ride height and stiffness tuning. An analytical formulation is developed to yield the optimum design of the new air suspension system. Experimental results verify the mathematical modeling and show the advantages of the new air suspension system.
机译:悬架在车辆舒适性和操控性中起着至关重要的作用。已经提出了不同类型的悬架来解决车辆的基本舒适度和操纵要求。传统的空气悬架系统使用单个柔性橡胶气囊将底盘负载传递到车轮。在这种类型的空气悬架中,可以通过进一步给安全气囊充气来控制底盘高度。但是,悬架刚度是无法控制的,它取决于安全气囊的体积和底盘负载。新型空气悬架的最新发展包括两个气室(橡胶气囊),可独立调节行驶高度和刚度。在该空气悬架系统中,可以通过控制两个气室中的气压,针对不同的驾驶条件同时改变车辆的刚度和行驶高度。这允许根据负载和道路状况来调整车辆的固有频率和高度。本文讨论了通过行驶高度和刚度调整来优化空气悬架设计的方法。开发了一种分析配方,以对新的空气悬架系统进行优化设计。实验结果验证了数学模型,并显示了新型空气悬架系统的优势。

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