基于PSO算法的ISG混合动力汽车传动系参数优化
Optimization of transmission parameters for ISG hybrid electric vehicle based on PSO algorithm
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摘要: 为了进一步提高ISG混合动力汽车的整车动力性与燃油经济性,在完成动力系统参数匹配之后,利用Advisor软件建立了仿真顶层模型,以验证参数匹配与部件选取的可行性;在此基础上,选取传动系主减速器速比和变速器各档速比为优化变量,动力性能相关要求为约束条件,采用粒子群优化(PSO)算法对传动系参数进行优化.仿真结果表明,优化后的最大爬坡度增加了4.3%,100 km燃油消耗降低了0.8 L,0~100 km/h加速时间减少了1.4 s.Abstract: In order to further improve the vehicle dynamic performance and fuel economy of ISG hybrid electric vehicle,after parameters matching of powertrain system,advisor software was used to build the vehicle simulation model to verify the feasibility of parameters matching and parts selection.On this basis,transmission main reduction ratio of transmission ratio and transmission of the file were selected as the optimization variables,the related dynamic performance requirements as the constraint conditions,particle swarm optimization (PSO)was used to optimize transmission parameters.Simulation results showed that the maximum climble gradient after optimization increased by 4.3%,fuel consumption per 100 km decreased by 0.8 L,0~100 km/h acceleration time decreased by 1.4 s.
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