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研究车辆的驾驶舒适度优化,考虑到子框架的研究
1Faculty of Transportation Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China.
Science progress
|July 25, 2024
概括
灵活的子框架显著影响车辆的驾驶舒适性. 通过使用先进的算法优化子框架板硬度,通过减少不同类型道路上的座椅加速来提高舒适度.
科学领域:
- 汽车工程 汽车工程
- 振动分析 振动分析
- 机械系统 机械系统
背景情况:
- 车辆的行驶舒适度受到运动过程中柔性子框架弹性变形的显著影响.
- 了解这种影响对于车辆设计和优化至关重要.
- 现有的研究往往简化了子框架动态,需要更全面的方法.
研究的目的:
- 为了研究灵活的子框架弹性变形对车辆驾驶舒适性的影响.
- 提出和评估一个多目标优化方法,以提高驾驶舒适度.
- 分析弹性变形对不同路况下的座椅加速的影响.
主要方法:
- 为特定车辆开发振动数学模型和刚性-柔性合模型.
- 模拟实验分析弹性变形对驾驶舒适度的影响.
- 建立一个辐射基函数近似模型,并应用多目标粒子群优化 (MOPSO) 和非主导排序遗传算法II (NSGA-II) 来优化子框架干刚度.
主要成果:
- 灵活的子框架显然会影响车辆的驾驶舒适性,改变座椅加速峰值.
- 在碰撞路上,垂直和纵向加速减小,而横向加速增加.
- 在随机道路上,纵向和横向加速增加,而垂直加速减少.
结论:
- 灵活的子框架的弹性变形是决定车辆驾驶舒适性的关键因素.
- 多目标优化,特别是使用NSGA-II,通过调整子框架的硬度,有效地提高了行驶舒适度.
- 优化的刚度参数符合研究的要求,以提高行车质量.
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