【摘要】 在自动化高速公路的环境下,针对一种基于非线性积分器Backstepping方法的交通流密度控制器,本文提出一种改进的交通流速度控制器设计方法,选取交通流速度为被控变量,并采用Backstepping方法进行控制器的设计,保证使每个路段的交通流速度以指数形式快速收敛到期望值.与已有的方法相比较,该控制器极大地提高了算法效率,而且无需矩阵的逆运算,可以自动满足系统的可控性条件.仿真结果显示该控制器可以有效地减少道路拥塞,有助于在拥堵的高速公路上实现平滑的交通流.更多还原

【Abstract】 On the basis of the traffic density control design by using the nonlinear integrator-Backstepping method,this paper proposes an improved method for designing the traffic flow-speed control by selecting the traffic flow-speed as the controlled variable and applying the Backstepping method to design the controller for an automated highway system.The controller guarantees the traffic flow-speed at each section to be exponentially convergent to the desired speed.Comparing with the prior methods,this controller is superior in algorithm-efficiency,being free from matrix inversion,and automati-cally satisfying the controllability condition.Simulations show that this controller effectively reduces the congestion and helps to achieve a smooth traffic flow on a congested highway.更多还原