摘要
考虑了传动系弹性和齿隙非线性等因素,建立电动汽车的动力总成和液压制动系统模型,分析了传动系特性对电动防抱死制动性能和驾驶舒适性的影响。为改善电动汽车电动防抱死制动效果,提出了传动系特性补偿控制策略,包括齿隙转速差的滑模控制和半轴转矩PID控制,以消除齿隙和传动系弹性的负面影响。通过仿真对比该策略与未补偿传动系特性时电动防抱死制动和传统液压防抱死制动的控制效果,结果表明,所提出的控制方法增强了电动汽车防抱死制动性能,提升了驾驶操纵性与舒适性。
With consideration of the non-linearity of gear backlash and the elasticity of transmission system, a powertrain model of electric vehicle and a hydraulic brake system model are built to analyze the effects of transmis-sion system characteristics on the performance of electric anti-lock braking system and driving comfort. In order to improve the effectiveness of electric anti-lock braking system in electric vehicle,a control strategy for compensating transmission system characteristics including the sliding-mode control of backlash’s angular speed difference and the PID control of half-shaft torque is proposed to eliminate the negative effects of backlash and transmission system e-lasticity. Simulation is conducted to compare the control effectiveness of electric and hydraulic anti-lock braking sys-tems with the proposed strategy and that without transmission system characteristic compensation. The results show that the control scheme proposed enhances the anti-lock braking performance and improves the drivability and ride comfort of electric vehicle.
出处
《汽车工程》
EI
CSCD
北大核心
2017年第10期1145-1151,1175,共8页
Automotive Engineering
基金
国家重点研发计划(2016YFB0101002)资助
关键词
电动汽车
传动系
齿隙
半轴弹性
回馈制动
防抱死制动
electric vehicles
transmission system
gear backlash
half-shaft elasticity
regenerative braking
anti-lock braking
