Multi-objective Optimization of Differential Steering System of Electric Vehicle with Motorized Wheels  

作　　者：赵万忠 王春燕 段婷婷 叶嘉冀 周协 

机构地区：[1]Department of Vehicle Engineering,Nanjing University of Aeronautics and Astronautics [2]State Key Laboratory of Mechanical Transmission,Chongqing University

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2014年第1期99-103,共5页南京航空航天大学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(51375007,51205191);the Visiting Scholar Foundation of the State Key Lab of Mechanical Transmission in Chongqing University;the Funds from the Postgraduate Creative Base in Nanjing University of Aeronautics and Astronautics;the Research Funding of Nanjing University of Aeronautics and Astronautics(NS2013015)

摘　　要：A differential steering system is presented for electric vehicle with motorized wheels and a dynamic model of three-freedom car is built.Based on these models,the quantitative expressions of the road feel,sensitivity,and operation stability of the steering are derived.Then,according to the features of multi-constrained optimization of multi-objective function,a multi-island genetic algorithm(MIGA)is designed.Taking the road feel and the sensitivity of the steering as optimization objectives and the operation stability of the steering as a constraint,the system parameters are optimized.The simulation results show that the system optimized with MIGA can improve the steering road feel,and guarantee the operation stability and steering sensibility.A differential steering system is presented for electric vehicle with motorized wheels and a dynamic model of three-freedom car is built. Based on these models, the quantitative expressions of the road feel, sensitivity, and operation stability of the steering are derived. Then, according to the features of multi-constrained optimization of multi-objective function, a multi-island genetic algorithm （MIGA） is designed. Taking the road feel and the sensi- tivity of the steering as optimization objectives and the operation stability of the steering as a constraint, the system parameters are optimized. The simulation results show that the system optimized with MIGA can improve the steering road feel, and guarantee the operation stability and steering sensibility.

关 键 词：electric vehicle with motorized wheels differential steering multi-island genetic algorithm MULTI-OBJECTIVE 

分 类 号：U461.4[机械工程—车辆工程]