摘要
对城市轻轨交通信号灯的自动控制,能够更好地对城市交通进行建设,保障大众的生命安全。对轻轨交通信号灯的自动控制,需要构建交通信号灯控制适应度函数,利用比例选择对最优个体进行选取和保存,完成交通信号灯的自动控制。传统方法对车流信息进行在线调整,利用比例因子对控制器进行构建,但忽略了对信号灯适应度函数的求取,导致控制精度偏低。提出利用遗传法对交通信号灯进行自动控制,采用叠加模式实现目标函数的构建,利用绿信比,绝对相位差等参数的计算,构建目标函数约束条件;对各相位时长和相位差进行编码;将交通信号灯自动控制当作适应度函数,利用比例选择对种群中最优的个体进行选取和保存;将种群中最优的个体与最差个体交换,缓解车辆延误情况。实验表明,上述方法不仅增强了交通信号灯自动控制效果,还有效解决了路口车辆延误和方法复杂度高的问题。
The automatic control of traffic signals in urban light railway can ensure the life safety. In this paper, the genetic method is used to control traffic lights automatically. Firstly, the objective function is constructed by su- perposition mode. Secondly, the green ratio and the absolute phase difference are used to establish the constraint con- dition of objective function. Thirdly, each phase time and phase difference are encoded. Moreover, the automatic control of traffic light is regarded as the fitness function, and the proportional selection is used to select and preserve the optimal individual in population. Finally, the best individual and the worst individual are exchanged to relieve the vehicle delay. Simulation results show that the proposed method not only enhances the effect of automatic control of traffic signal, but also effectively reduces vehicle delay at crossing and reduces complexity of method.
作者
田力波
贾睿
TIAN Li-bo, JIA Rui(College of Humanities ＆ Information Changchun University of Technology, Changchun Jilin 130000, Chin)
出处
《计算机仿真》
北大核心
2018年第5期309-312,329,共5页
Computer Simulation
关键词
轻轨
交通信号灯
自动控制
Light rail
Traffic light
Auto-control
作者简介
田力波（1976-），男（汉族），吉林松原人，硕士研究生，讲师，研究方向：自动化及电气工程;贾睿（1989-），女（汉族），吉林双辽人，硕士研究生，助教，研究方向：计算机应用技术
