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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.13 [2006] >
IJEMS Vol.13(4) [August 2006] >
| Title: | Freeway traffic flow control by lumped parameter system approach |
| Authors: | Akbaş, Ahmet
Ergun, Murat |
| Issue Date: | Aug-2006 |
| Publisher: | CSIR |
| IPC Code: | G08G1/00 |
| 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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