四轮驱动混合动力轿车驱动防滑控制研究  

Study of Acceleration Slip Regulation Strategy for Four Wheel Drive Hybrid Electric Car

作　　者：赵治国[1] 顾君[1] 余卓平[1] 

机构地区：[1]同济大学汽车学院,上海201804

出　　处：《机械工程学报》2011年第14期83-98,共16页Journal of Mechanical Engineering

基　　金：国家重点基础研究发展计划资助项目(973计划;2011CB711200)

摘　　要：多动力源增加了混合动力汽车驱动轮转矩的调节方式,也对依赖常规防抱死制动系统(Anti-lock braking system,ABS)而实施的驱动防滑控制(Acceleration slip regulation,ASR)带来新的挑战。针对四轮驱动混合动力轿车,考虑非线性7自由度车辆纵向动力学,建立样车动力系统前向仿真模型。利用转矩控制精确且响应快的电动机进行打滑车轮的转矩调整,基于既有并经验证的能量管理策略,开发逻辑门限及P-Fuzzy-PI多模态分段ASR控制算法,结合低附着系数路面纯电动起步及混合驱动急加速行驶工况进行离线仿真。通过整车电控单元(Hybrid control unit,HCU)引入前轮轮速传感器信号并集成ASR功能,在冰雪路面开展实车纯电动起步防滑试验。仿真及测试结果表明,所设计的两种ASR控制策略均能有效地抑制驱动轮的瞬时打滑,基于能量管理策略开发ASR控制算法并通过HCU来实施是可行且有效的。The use of multiple power sources not only increases the modulation means of driving wheel torque,but also brings a new challenge to the acceleration slip regulation（ASR） realized by relying on conventional anti-lock braking system（ABS）.Aiming at four wheel drive hybrid electric car,a powertrain forward simulation model is built with consideration of the nonlinear seven degree-of-freedom vehicle longitudinal dynamics.Using the electric motor characterized by the accurate control and rapid response of torque to adjust the torque of slipping wheel,and based on the existing energy management strategy validated in the real vehicle,ASR control algorithms of logic threshold and P-Fuzzy-PI having the qualities of multi-mode and time-sharing are respectively developed,offline simulation is conducted under the two running cases of pure electric launching and hybrid propulsion emergence acceleration at the low adhesion coefficient road.Afterwards,front wheel speed sensor signals are acquired by the hybrid control unit（HCU）and ASR is integrated into HCU,real vehicle anti-slip test is performed on the snow/ice road.Simulation and test results indicate that the proposed two kinds of anti-slip strategies can effectively prohibit the driven wheel from transient slipping,so the scheme that ASR strategy can be integrated into the energy management strategy and be carried out in the HCU is feasible and effective.

关 键 词：四轮驱动混合动力轿车 驱动防滑 逻辑门限控制 P-Fuzzy-PI控制 

分 类 号：U463.54[机械工程—车辆工程]