| 遗传算法优化线控转向系统角传动比的研究 |
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| 引用本文： | 于蕾艳,林逸,施国标.遗传算法优化线控转向系统角传动比的研究[J].计算机仿真,2008,25(8). |
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| 作者姓名： | 于蕾艳 林逸 施国标 |
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| 作者单位： | 1. 中国石油大学机电工程学院,山东,东营,257061;北京理工大学机械与车辆工程学院,北京,100081
2. 北京理工大学机械与车辆工程学院,北京,100081 |
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| 基金项目： | 奥运用纯电动客车整车优化及制造项目 |
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| 摘 要： | 线控转向系统取消了转向盘与转向轮的机械连接,可以根据车况灵活改变角传动比以提高汽车的操纵稳定性.首先建立了线控转向系统的人-车-路闭环动力学模型,包括道路模型、驾驶员模型、二自由度整车模型.然后研究了包括轨道误差总方差、方向误差指标、驾驶员转向负担三项指标的开环总方差.最后利用遗传算法,以开环总方差为适应度函数,对不同车速下的传动比进行优化.结果表明,各车速下的传动比使得开环总方差较小,提高了车道跟踪性能、方向稳定性能.降低了驾驶员的转向负荷,从而提高汽车的操纵稳定性.
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| 关 键 词： | 线控转向 遗传算法 角传动比 |
Optimization of Steer-by-Wire System's Steering Ratio Using Genetic Algorithm |
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| YU Lei-yan,LIN Yi,SHI Guo-biao.Optimization of Steer-by-Wire System's Steering Ratio Using Genetic Algorithm[J].Computer Simulation,2008,25(8). |
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| Authors: | YU Lei-yan LIN Yi SHI Guo-biao |
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| Affiliation: | YU Lei-yan1,2,LIN Yi2,SHI Guo-biao2(1.College of Mechanical , Electronic Engineering,China University of Petroleum,Dongying Sh,ong 257061,China,2.School of Mechanism , Vehicle Engineering,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | Steer-by-Wire system cuts off the mechanical link between steering wheel and steered wheels,so it can change steering ratio according to vehicle state to improve vehicle handling and stability.First,a driver-vehicle-road close loop dynamics model of Steer-by-Wire system including road model,driver model and two degree of freedom full vehicle model is built.Then the open loop total variance including trace error total variance,direction error total variance and driver steering load is researched.Finally the ... |
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| Keywords: | Steer-by-wire(SBW) Genetic algorithm Steering ratio |
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