考虑前后车效应的反馈控制跟驰模型
A car-following mo del with considering control signals from front and rear
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摘要: 本文中,在优化速度模型的基础上,提出一个计及跟随车与当前车车头间距的跟驰模型。从控制论角度出发,对模型进行稳定性分析,得到了模型的稳定性条件。同时,在新模型中引入了反馈控制信息,考虑当前车与前后方车辆之间的速度差。对模型进行线性分析后得到小扰动不会导致交通堵塞的条件。在开放边界条件下,对两个模型进行数值模拟,结果表明在控制信号下,车辆速度波动明显减小,拥堵现象得到有效缓解。从而证实反馈控制信号对缓解交通拥堵的重要作用。Abstract: A new control method to suppress traffc jams is proposed by considering headway of the front and rear. With the control signals or not the stability conditions are derived. It is shown that the vehicle speed fluctuation by the simulations disappears when the feedback control signals are introduced. Therefore, serious congestion will not occur in the system. Illustration shows that the feedback control signal can effectively suppress and alleviate the traffc congestion.
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