安装ECAS和液压互联悬架的客车动态性能研究*

doi:10.19562/j.chinasae.qcgc.2020.03.008

汽车工程 ›› 2020, Vol. 42 ›› Issue (3): 330-338.doi: 10.19562/j.chinasae.qcgc.2020.03.008

安装ECAS和液压互联悬架的客车动态性能研究^*

綦衡敏¹, 张农^1,2, 王东¹, 张邦基¹, 郑敏毅³

1.湖南大学,汽车车身先进设计制造国家重点实验室,长沙 410082;
2.合肥工业大学汽车工程技术研究院,合肥 230009;
3.合肥工业大学汽车与交通工程学院,合肥 230009

收稿日期:2018-12-18 出版日期:2020-03-25 发布日期:2020-04-16
通讯作者: 张农,教授,博士生导师,E-mail:nzhanghfut@163.com
基金资助:
*国家自然科学基金(51675152)资助

Study on Dynamic Performance of a Bus Equipped with Electronically Controlled Air Spring and Hydraulically Interconnected Suspension

Qi Hengmin¹, Zhang Nong^1,2, Wang Dong¹, Zhang Bangji¹, Zheng Minyi³

1.Hunan University, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Changsha 410082;
2.Automotive Engineering Research Institute, Hefei University of Technology, Hefei 230009;
3.School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei 230009

Received:2018-12-18 Online:2020-03-25 Published:2020-04-16

摘要/Abstract

摘要： 客车因载质量大和质心高的特点难以兼顾操纵稳定性和平顺性,为此本文提出了一种侧倾构型的液压互联悬架(RHIS)与电控空气悬架(ECAS)相结合的新型悬架系统。首先,基于热力学理论建立了空气弹簧非线性模型并试验验证;基于质心定理、动量矩定理推导了整车9自由度动力学模型,建立了整车和RHIS的机械液压耦合模型,并通过实车测试验证了模型;然后,设计了气囊模糊控制器以实现车身高度调节;最后,在常用的操纵稳定性和平顺性测试工况下仿真对比了新型和传统悬架系统的性能。结果表明,所提出的新型悬架系统可实现3挡车身高度调节,且在保持原车平顺性的同时明显改善了整车的操纵稳定性。

关键词: 电子控制空气悬架, 液压互联悬架, 车身高度调节, 操纵稳定性, 平顺性

Abstract: In view of the difficulty in keeping balance between the handling stability and ride comfort of bus characterized by high mass center and heavy load, a novel suspension configuration is proposed, combining roll-resistant hydraulically interconnected suspension (RHIS) and electronically controlled air spring (ECAS). Firstly, a nonlinear model for ECAS is developed based on thermodynamic theory and verified by test. Then, 9-DoF vehicle dynamic model is derived based on centroid theorem and momentum moment theorem, and into which the model for RHIS is coupled. Next, a fuzzy controller for air spring is designed for body height adjustment. Finally, simulations on the test conditions of handling stability and ride comfort are conducted to compare the performances of novel suspension and traditional one. The results show that the novel suspension system proposed can achieve the three-levels of body height adjustment and apparently improve the handling stability of vehicle while maintaining the original level of ride comfort

Key words: hydraulically interconnected suspension, body height adjustment, handling stability, ride comfort

綦衡敏, 张农, 王东, 张邦基, 郑敏毅. 安装ECAS和液压互联悬架的客车动态性能研究^*[J]. 汽车工程, 2020, 42(3): 330-338.

Qi Hengmin, Zhang Nong, Wang Dong, Zhang Bangji, Zheng Minyi. Study on Dynamic Performance of a Bus Equipped with Electronically Controlled Air Spring and Hydraulically Interconnected Suspension[J]. Automotive Engineering, 2020, 42(3): 330-338.

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安装ECAS和液压互联悬架的客车动态性能研究^*

Study on Dynamic Performance of a Bus Equipped with Electronically Controlled Air Spring and Hydraulically Interconnected Suspension

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