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摘要: 利用集合理论的一些相关知识, 研究了孤立交通路口的信号控制, 提出了孤立交通路口可变相位信号控制的方法。与传统交通路口模糊信号控制的方法相比, 可变相位信号控制的相位顺序、相位时间以及相位组合更加灵活, 更适应交通路口实时变化的交通状况, 同时可变相位信号控制能够适应不同形状交通路口的信号控制。用TSIS仿真软件仿真结果表明可变相位信号控制的效果要优于传统模糊控制, 是进行路口信号控制的一种实用和有效的算法。Abstract: Compared with the traditional fuzzy control on signal control of traffic intersection, the phase order, phase time and phase combination of changeable phases signal control become more flexible, and can adapt to the real variation of traffic intersection better. The changeable phases signal control can also adapt to the signal control of traffic intersection with different forms. The result of simulation show that changeable phases signal control is better than the traditional fuzzy control, and is an efficient and practicable algorithm.
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Key words:
- traffic engineering /
- traffic intersection /
- changeable phases /
- signal control /
- system simulation
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表 1 交通路口模糊控制规则
Table 1. Fuzzy controller rules at traffic intersection
Qg (t) Qr (t) 很短 短 较短 较长 长 很长 很短 零 零 零 零 零 零 短 短 零 零 零 零 零 较短 较短 短 零 零 零 零 较长 中等 较短 短 零 零 零 长 较长 中等 较短 短 零 零 很长 长 较长 中等 较短 短 零 
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表 2 两种控制方法的性能指标比较
Table 2. Comparison of two control methods' performances
性能指标 传统的模糊控制 可变相位模糊控制 性能优化百分比/% 车辆延误时间D/s 380 355 6.57 停车数S/veh 458 418 8.73 通过交叉口车辆数P/veh 1444 1525 5.61
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