基于控制分配的四轮独立电驱动车辆驱动力分配算法

针对目前四轮独立电驱动车辆研究中尚未有效解决的系统失效控制问题,提出了一种基于控制分配的驱动力分配算法.首先建立了满足车辆经济性要求的目标函数和相关约束条件,通过优化保证在正常驱动状态下整车具有最佳的经济性能.接着基于控制分配原理对故障电机驱动转矩进行约束处理,使目标转矩能够在多种失效情况下实现再分配,有效解决了多驱动电机系统失效控制问题.最后,仿真结果验证了所提出的算法能在安全约束下有效地改善车辆的经济性,并系统地提升了车辆应对故障的能力.

A Study on Driving Force Distribution of Four-Wheel-Independent Drive Electric Vehicle Based on Control Allocation

Aiming at the unsolved problem of system failure control in the researches on four wheel independent drive electric vehicle,a driving force distribution algorithm based on control allocation method is proposed.First,the objective function and constraint conditions for meeting the requirements of vehicle fuel economy are set up,and an optimization is conducted to assure the optimal fuel economy of vehicle in normal driving conditions.Then based on control allocation method,constraints are applied on the driv...