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IJEMS Vol.13(4) [August 2006] >


Title: Freeway traffic flow control by lumped parameter system approach
Authors: AkbaĊŸ, Ahmet
Ergun, Murat
Issue Date: Aug-2006
Publisher: CSIR
IPC CodeG08G1/00
Abstract: Freeway traffic flows can be controlled by lumped parameter system approach owing to the space discretized system models. Such a control model incorporating a coordinated ramp metering mechanism is proposed in this study. The non-linear state equations representing the traffic system dynamics are derived from the conservation law in difference equations form. The control model is obtained by a feedback linearization approach, so that the target density of the controller is chosen as the critical density of the traffic system. Simulation based test studies have been done in a VISSIM simulation environment in order to compare the data obtained by the shock wave modified feedback linearization method to the non-modified type, with respect to the uncontrolled system performance. Test results show that the main-link flow performance is increased sufficiently by the proposed control model.
Page(s): 322-332
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Source:IJEMS Vol.13(4) [August 2006]

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