基于集成式线控液压制动系统的轮胎滑移率控制

doi:10.13229/j.cnki.jdxbgxb20170060

摘要/Abstract

摘要： 传统的车辆制动系统很难以轮胎滑移率为直接控制目标,为了提高汽车的主动安全性能,对集成式线控液压制动系统(IEHB)的轮胎滑移率控制机理进行深入研究。在建立IEHB执行机构物理仿真模型与7自由度整车动力学模型的基础上,结合分层控制构架,利用滑移率与制动转矩构成的双闭环非线性控制方法,设计了基于IEHB系统的轮胎滑移率控制器;通过AMESim与MATLAB/Simulink联合仿真平台,分别在高附着、低附着路面进行高速主动紧急制动仿真试验。结果表明:本文提出的控制方法可有效调控汽车轮胎滑移率。

关键词: 车辆工程, 集成式线控液压制动系统, 轮胎滑移率, 分层控制构架, 双闭环非线性控制

Abstract: The traditional vehicle braking system is difficult to control the tire slip rate directly. In order to study the tire slip control mechanism of the Integrated-Electro-Hydraulic Braking (IEHB) system and the improve active safety performance of the vehicle, the physical simulation model of IEHB actuator and dynamic model of 7 DOF vehicle were established. Combining with the hierarchical control structure and taking the control method of dual loop, which constitutes slip rate and braking torque, the tire slip nonlinear controller based on IEHB is designed. Simulation test is conducted via co-simulation platform of MATLAB/Simulink and AMESim under the scenarios of active emergency braking process on high adhesion coefficient road and low adhesion coefficient road. Simulation results verify the proposed control method.

Key words: vehicle engineering, integrated-electro-hydraulic brake system, tire slip ratio, hierarchical control structure, dual loop nonlinear control

中图分类号:

U461

何祥坤, 季学武, 杨恺明, 武健, 刘亚辉. 基于集成式线控液压制动系统的轮胎滑移率控制[J]. 吉林大学学报(工学版), 2018, 48(2): 364-372.

HE Xiang-kun, JI Xue-wu, YANG Kai-ming, WU Jian, LIU Ya-hui. Tire slip control based on integrated-electro-hydraulic braking system[J]. 吉林大学学报(工学版), 2018, 48(2): 364-372.

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