电动汽车驱动力分层控制策略  

Driving force hierarchical control strategy of electric vehicle

作　　者：朱绍鹏[1] 林鼎[1] 谢博臻 俞小莉[1] 韩松[1] 

机构地区：[1]浙江大学动力机械及车辆工程研究所,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2016年第11期2094-2099,共6页Journal of Zhejiang University：Engineering Science

基　　金：浙江省2013年度重大科技专项基金资助项目(2013C01001);浙江省电动汽车科技创新团队资助项目(2011R50008-22)

摘　　要：为了提高两后轮独立驱动电动汽车的操纵稳定性,提出一种驱动力分层控制策略.该分层控制策略包括车辆动力学模型设计层、补偿横摆力矩制定层和驱动力分配层,将车辆横摆角速度和质心侧偏角的实际值与理想值的偏差作为控制量,利用模糊算法计算得出两侧车轮的驱动力矩.在前期仿真验证的基础上进行实车快速控制原型试验,验证控制策略的实车控制效果.试验结果表明,设计的驱动力分层控制策略在过弯时能够对驱动轮转矩进行合理分配,在不影响车辆动力性的同时,提高车辆的操纵稳定性.A driving force hierarchical control strategy was proposed in order to improve the stability of rear-wheel-independent-drive electric vehicle. This control strategy induded three parts： vehicle dynamic model design layer, compensated yaw moment determining layer and driving force distribution layer. The error of actual value and ideal value of yaw rate and sideslip angle was inputted and the driving force was counted through a fuzzy logic. A rapid control prototype test was conducted to prove the effectiveness of this control strategy. Results show that this control strategy can improve the steering stability of vehicle through reasonably distributing the driving torque to driving wheel which also ensures the power performance of the electric vehicle.

关 键 词：分层控制策略 横摆力矩控制 模糊控制 快速控制原型 操纵稳定性 

分 类 号：U461.6[机械工程—车辆工程] TP13[交通运输工程—载运工具运用工程]