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欠驱动半挂汽车列车的运动建模与跟踪控制

, PP. 1296-1302

Keywords: 交通运输工程,车辆动力学,欠驱动系统,半挂汽车列车,滑模变结构控制

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Abstract:

应用车辆系统动力学理论,建立了以车辆参考坐标系和地面坐标系的欠驱动汽车列车动态模型。为了简化验算和求解过程,采用准确线性化方法对建立的系统模型进行线性化。在此基础上,针对小曲率转弯半径的车辆运行轨迹,建立了极坐标下的汽车挂车系统运动学模型,应用滑模变结构控制理论,给出了车辆系统状态变量向超平面收敛的方法。最后,对平滑运动轨迹和小曲率转弯半径的跟踪控制进行了仿真分析。仿真实验结果表明:所设计的反馈控制器能改善汽车列车对行驶路线的跟踪能力,使偏离的车辆快速返回到期望的稳态轨迹上。

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