Effects of iterative learning based signal control strategies on macroscopic fundamental diagrams of urban road networks

Fei Yan (), Fuli Tian () and Zhongke Shi
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Fei Yan: School of Automation, Northwestern Polytechnical University, Xi’an 710072, China
Fuli Tian: School of Automation, Northwestern Polytechnical University, Xi’an 710072, China
Zhongke Shi: School of Automation, Northwestern Polytechnical University, Xi’an 710072, China

International Journal of Modern Physics C (IJMPC), 2016, vol. 27, issue 04, 1-20

Abstract: Urban traffic flows are inherently repeated on a daily or weekly basis. This repeatability can help improve the traffic conditions if it is used properly by the control system. In this paper, we propose a novel iterative learning control (ILC) strategy for traffic signals of urban road networks using the repeatability feature of traffic flow. To improve the control robustness, the ILC strategy is further integrated with an error feedback control law in a complementary manner. Theoretical analysis indicates that the ILC-based traffic signal control methods can guarantee the asymptotic learning convergence, despite the presence of modeling uncertainties and exogenous disturbances. Finally, the impacts of the ILC-based signal control strategies on the network macroscopic fundamental diagram (MFD) are examined. The results show that the proposed ILC-based control strategies can homogenously distribute the network accumulation by controlling the vehicle numbers in each link to the desired levels under different traffic demands, which can result in the network with high capacity and mobility.

Keywords: Urban road networks; traffic signal control; iterative learning control; macroscopic fundamental diagram (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1142/S0129183116500455

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