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

Abstract

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

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

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