Abstract
Four-wheel independently driven electric vehicles(FWID-EV)endow a flexible and scalable control framework to improve vehicle performance.This paper integrates the torque vectoring and active suspension system(ASS)to enhance the vehicle's longitudinal and vertical motion control performance.While the nonlinear characteristic of the tire model leads to a relatively heavier computational burden.To facilitate the controller design and ease the load,a half-vehicle dynamics system is built and simplified to the linear-time-varying(LTV)model.Then a model predictive controller is developed by formulating the objective function by comprehensively considering the safety,energy-saving and comfort requirements.The in-wheel motor efficiency and the power loss of tire slip are treated as optimization indices in this work to reduce energy consumption.Finally,the effectiveness of the proposed controller is verified through the rapid-control-prototype(RCP)test.The results demonstrate the enhancement of the energy-saving as well as comfort on the basis of vehicle stability.
基金项目
国家自然科学基金(51975118)
国家自然科学基金(52025121)
Foundation of State Key Laboratory of Automotive Simulation and Control of China(20210104)
Foundation of State Key Laboratory of Automobile Safety and Energy Saving of China(KFZ2201)
Speciai Fund of Jiangsu Province for the Transformation of Scientific and Technological Achievements of China(BA2021023)
维普
万方数据