基于遗传算法的混动汽车扭矩节能协调控制优化

王平; 张宏; 李春芾

doi:10.3969/j.issn.1001-2222.2023.03.014

车用发动机 >

2023 , Vol. 0 >Issue 3: 88 - 92

DOI: https://doi.org/10.3969/j.issn.1001-2222.2023.03.014

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基于遗传算法的混动汽车扭矩节能协调控制优化

王平 ,
张宏 ,
李春芾

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（1.内蒙古交通职业技术学院管理工程系，内蒙古赤峰 024005；2.内蒙古大学交通学院，内蒙古呼和浩特 010070）

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Genetic Algorithm-Based Optimization of Torque Energy-Saving Coordinated Control for Hybrid Electric Vehicle

WANG Ping ,
ZHANG Hong ,
LI Chunfu

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(1.Department of Management Engineering,Inner Mongolia Transportation Vocational And Technical College,Chifeng 024005,China；2.School of Transportation,Inner Mongolia University,Hohhot 010070,China)

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摘要

为了提高混合动力汽车的节能效果，在等效燃油消耗最小策略(Equivalent Fuel Comsumption Minimization Strategy，ECMS)的基础上引入遗传算法(Genetic Algorithm，GA)，设计了一种基于遗传算法优化发动机扭矩的节能协调控制策略。以整车冲击波强度作为价值指标目标函数，通过遗传算法优化后获得最佳扭矩参数，优化模式运行阶段的发动机扭矩，减小冲击影响并获得更优的扭矩跟随效果。研究结果表明：采用GA优化能够对发动机扭矩起到削峰填谷作用，获得更高的整车动力稳定性；NEDC工况下，冲击波强度下降了近45%；利用GA-ECMS协调控制方案能够增强模式切换品质，也可以有效改善混合动力系统经济性。采用实际路段工况验证了GA-ECMS扭矩优化协调效果，结果表明GA优化混合驱动可稳定发动机扭矩，能够达到优异的协调控制性能。

关键词： 混合动力; 扭矩; 遗传算法; 协调控制; 节能

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王平 , 张宏 , 李春芾 . 基于遗传算法的混动汽车扭矩节能协调控制优化[J]. 车用发动机, 2023 , 0(3) : 88 -92 . DOI: 10.3969/j.issn.1001-2222.2023.03.014

Abstract

In order to improve the energy-saving effect of hybrid electric vehicle, genetic algorithm (GA) was introduced based on the equivalent fuel consumption minimization strategy (ECMS). Then an energy-saving coordinated control strategy was designed to optimize the engine torque system based on GA. With the shock wave intensity of whole vehicle as the objective function of value index, the optimal torque parameters were obtained through GA optimization, and the engine torque in the running stage of mode was optimized to reduce the impact effect and obtain the better torque following effect. The results show that GA optimization plays the role of peak cutting and valley filling on engine torque and hence can obtain higher vehicle power stability. The intensity of shock wave decreases by nearly 45% under NEDC conditions after using the algorithm. GA-ECMS coordinated control scheme can improve the quality of mode switch and the economy of hybrid power system as well. The real road operating condition verifies the coordinated effect of GA-ECMS torque optimization. The GAoptimized hybrid drive can acquire the stable engine torque and achieve the excellent coordinated control performance.

Key words： hybrid；torque; genetic algorithm; coordinated control; energy saving

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