驾驶员制动意图对多轴车辆紧急制动迟滞特性的影响*

doi:10.19562/j.chinasae.qcgc.2018.010.010

汽车工程 ›› 2018, Vol. 40 ›› Issue (10): 1185-1191.doi: 10.19562/j.chinasae.qcgc.2018.010.010

驾驶员制动意图对多轴车辆紧急制动迟滞特性的影响^*

王喆, 周晓军, 杨辰龙, 胡勃

1.浙江大学,流体动力与机电系统国家重点实验室,杭州 310027;
2.浙江省先进制造技术重点实验室,杭州 310027

收稿日期:2017-08-10 出版日期:2018-10-25 发布日期:2018-10-25
通讯作者: 周晓军,教授,博士生导师,E-mail:cmeesky@163.com。
基金资助:
*国家自然科学基金(51275453)资助

Effects of Driver's Braking Intention on Hysteresis Characteristics of Emergency Braking in Multi-axle Vehicle

Wang Zhe, Zhou Xiaojun, Yang Chenlong, Hu Bo

1.Zhejiang University, The State Key Lab of Fluid Power and Mechatronic Systems, Hangzhou 310027;
2.Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, Hangzhou 310027

Received:2017-08-10 Online:2018-10-25 Published:2018-10-25

摘要/Abstract

摘要： 制动踏板作为驾驶员制动意图的执行元件,其行程和速度会改变气压制动系统的迟滞特性,而制动的迟滞效应又严重影响车辆的紧急制动性能。本文中根据多轴车辆气压制动系统构成和系统子部件的动力学建模分析,搭建了八轴车辆气压制动系统测试台架。采用快速响应的伺服驱动机构控制制动踏板的行程与速度,以实现对驾驶员不同紧急制动意图的准确模拟。试验结果表明,制动踏板行程越大,回路迟滞时间越长,且二者成二次曲线关系;制动踏板速度越快,回路迟滞时间越短。另外,通过系统辨识的方法,建立了考虑驾驶员制动意图的多轴车辆气压制动系统各回路的1阶迟滞模型。

关键词: 多轴车辆, 制动意图, 迟滞效应, 紧急制动

Abstract: The travel and velocity of brake pedal, as the executive element of driver's braking intention, may change the characteristics of pneumatic braking system, and the hysteresis effects of brake seriously affect the performance of emergency braking. In this paper, a test bench for the pneumatic braking system of an 8-axle vehicle is constructed based on the composition of pneumatic braking system in multi-axle vehicle and the dynamic modeling analysis on its components. The quick-response servo driving mechanism is adopted to control the travel and velocity of brake pedal for achieving accurate simulation on driver's different emergency braking intentions. Test results show that circuit hysteresis time extends with the increase of brake pedal travel, exhibiting a relation of quadric curve, and it shortens with the rise of brake pedal velocity. In addition, a 1st-order hysteresis model for each circuit of pneumatic braking system in multi-axle vehicle is established by using system identification method with consideration of driver's braking intention

Key words: multi-axle vehicle, braking intention, hysteresis effects, emergency braking

王喆, 周晓军, 杨辰龙, 胡勃. 驾驶员制动意图对多轴车辆紧急制动迟滞特性的影响^*[J]. 汽车工程, 2018, 40(10): 1185-1191.

Wang Zhe, Zhou Xiaojun, Yang Chenlong, Hu Bo. Effects of Driver's Braking Intention on Hysteresis Characteristics of Emergency Braking in Multi-axle Vehicle[J]. , 2018, 40(10): 1185-1191.

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驾驶员制动意图对多轴车辆紧急制动迟滞特性的影响^*

Effects of Driver's Braking Intention on Hysteresis Characteristics of Emergency Braking in Multi-axle Vehicle

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