液压互联悬架系统关键参数对车辆动力学响应影响及试验验证

doi:10.3901/JME.2017.14.039

机械工程学报 ›› 2017, Vol. 53 ›› Issue (14): 39-48.doi: 10.3901/JME.2017.14.039

• 特邀专栏：汽车先进动力系统的设计、优化与控制专栏（上） • 上一篇下一篇

液压互联悬架系统关键参数对车辆动力学响应影响及试验验证

陈盛钊¹, 钟义旭¹, 张邦基¹, 张农^1,2

1. 湖南大学汽车车身先进设计制造国家重点试验室长沙 410082;
2. 合肥工业大学汽车与交通工程学院合肥 230009

收稿日期:2016-10-28 修回日期:2017-03-22 出版日期:2017-07-20 发布日期:2017-07-20
通讯作者: 张邦基(通信作者),男,1967年出生,博士,教授。主要从事车辆系统动力学、液压互联悬架、汽车NVH、模型减缩等方面研究。E-mail:bangjizhang@hnu.edu.cn
作者简介:陈盛钊,男,1983年出生,博士研究生。主要研究方向为车辆底盘系统动力学。E-mail:chen_shengzhao@126.com;钟义旭,男,1989年出生,硕士研究生。主要研究方向为车辆NVH测试与分析、刚柔耦合系统动力学等。E-mail:yxzhong@hnu.edu.cn;张农,男,1959年出生,博士,国家千人计划学者,教授,博士研究生导师。主要从事机械振动与控制、多体系统动力学与控制及其在车辆工程中的应用。E-mail:nong_zhang@163.com
基金资助:
国家自然科学基金（51675152）和湖南大学汽车车身先进设计制造国家重点实验室开放课题（71575005）资助项目。

Influence of Key Parameters of Hydraulically Interconnected Suspension on Vehicle Dynamics and Experimental Validation

CHEN Shengzhao¹, ZHONG Yixu¹, ZHANG Bangji¹, ZHANG Nong^1,2

1. State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha 410082;
2. School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009

Received:2016-10-28 Revised:2017-03-22 Online:2017-07-20 Published:2017-07-20

摘要/Abstract

摘要： 液压互联悬架系统能有效改善车辆的操纵稳定性与安全性，因此分析其关键设计参数对车辆动力学响应的影响具有重要意义。以某SUV为应用对象，设计一套侧倾互联式液压悬架系统。在机械液压耦合边界处，车辆将其运动状态量传递至液压系统，引起蓄能器内气体体积变化，从而改变液压回路中系统油压，进而引起耦合边界处作用力变化。将该作用力引入车辆运动方程，提出一种机械液压耦合车辆动力学模型。开展相关试验验证该模型应用于车辆动力学研究的有效性。选取蛇行试验工况，分析液压互联悬架系统关键参数对车辆响应的影响。仿真结果表明，侧倾角和轮胎动载荷的幅值与系统油压、液压作动器上下腔面积差和面积比呈负相关，与蓄能器初始气体体积呈正相关；各关键参数对车辆侧向加速度峰值影响不明显。考虑开展相关试验研究的可行性，对车辆进行实车测试及数据分析，验证仿真分析结论。

关键词: 操纵稳定性, 车辆动力学, 机械液压耦合模型, 蛇行试验, 液压互联悬架系统

Abstract: The hydraulically interconnected suspension system plays a significant role on improving vehicle safety, handling performance, which implies the importance of the study of the key parameters of the suspension system on vehicle dynamics. With a sports utility vehicle as the application object, an hydraulic suspension system with anti-roll interconnection mode is introduced, the vehicle state variables are transferred to the hydraulic system on the mechanical and hydraulic coupling surface, then the gas volume in the accumulators are changed which affects the oil pressure in the hydraulic circuits, hence the forces and torques on the coupling surface are updated. The forces and torques are introduced to the vehicle dynamic model to propose a new model with vehicle and hydraulic suspension interacting. The new vehicle model is verified with experimental results to testify its effectiveness on further vehicle response analysis. Then the slalom test is chosen to analyze the influence of the key parameters of the hydraulic suspension system on the vehicle dynamic responses. The results show that the amplitude of the roll angle and the left-rear tire force on z-axis have negative correlation with the oil pressure, the area difference and ratio of the two chambers of the actuators, and positive correlation with the volume of the accumulators; the key parameters have little influence on the peak values of the lateral acceleration. With the consideration of the experimental costs and periods, relative experiments are conducted to validate the above mentioned conclusions.

Key words: handling performance, hydraulically interconnected suspension system, slalom test, vehicle dynamics, vehicle model with mechanical and hydraulic systems coupled

中图分类号:

U462

陈盛钊, 钟义旭, 张邦基, 张农. 液压互联悬架系统关键参数对车辆动力学响应影响及试验验证[J]. 机械工程学报, 2017, 53(14): 39-48.

CHEN Shengzhao, ZHONG Yixu, ZHANG Bangji, ZHANG Nong. Influence of Key Parameters of Hydraulically Interconnected Suspension on Vehicle Dynamics and Experimental Validation[J]. Journal of Mechanical Engineering, 2017, 53(14): 39-48.

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液压互联悬架系统关键参数对车辆动力学响应影响及试验验证

Influence of Key Parameters of Hydraulically Interconnected Suspension on Vehicle Dynamics and Experimental Validation

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