Multi-objective Optimization of Differential Steering System of Electric Vehicle with Motorized Wheels |
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| Authors: | Zhao Wanzhong Wang Chunyan Duan Tingting Ye Jiaji Zhou Xie |
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| Affiliation: | [1]Department of Vehicle Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R. China [2]State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, 400044, P. R. China |
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| Abstract: | 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. |
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