Adaptive observer for traffic density estimation
Por:
Alvarez-Icaza L., Munoz L., Sun X., Horowitz R.
Publicada:
1 ene 2004
Resumen:
A traffic density scheme to be used for real-time on-ramp metering control to freeways is proposed. The scheme can be used in two situations: a) When there are no traffic flow sensors appropriately located and b) When available sensors are faulty. It is assumed that some traffic flow and velocity measurements are available in the vicinity of the place where an on-ramp is located. Based on this information, a non-linear adaptive observer for vehicle density is designed that also estimates the mixing factors that define the traffic flow characteristics: free or congested. The design is based on Lyapunov techniques that take advantage of the structure of the conservation of vehicles model.
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