To improve the ramp control performance and to enhance the system response speed, a compound control method of cerebellar model articulation controller (CMAC) and proportional-integral-derivative (PID) control is employed to study the highway ramp metering problem. Firstly, a cell transmission model (CTM) is established to describe the dynamic property of highway traffic flow accurately. Then, the principle and algorithm of CMAC-PID compound control are formulated. Also, CMAC-PID ramp controllers are designed based on the CTM and a nonlinear feedback control technique. This control problem is an output density tracking problem. Finally, the superiority of this approach is verified by simulation examples. Compared to a fuzzy logic control, CMAC-PID compound control has greatly shortened the response time and improved the dynamic performance. This approach can effectively eliminate traffic jams and maintain the stability of highway traffic flow.
Highway Ramp Metering Based on CMAC-PID Compound Control
01.08.2018
1680864 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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