Modeling and fault-tolerant control of large urban traffic networks

Document Type

Conference Proceeding

Publication Date

1-1-1997

Abstract

This work deals with the modeling and design of fault-tolerant traffic control systems for urban transportation networks. The dynamics of queue length in front of the intersections are captured by a nonlinear state space model where a limit-reset function is introduced to maintain the non-negativity of the queues for traffic conditions ranging from undersaturation to oversaturation. A fault-tolerant control system is then synthesized to maintains system integrity (stability and vehicle flow regulation) under partial system failure brought about by local faults such as sensor/actuator failure, vehicle accidents, severing of communication links, etc. It is shown that the fault-tolerant conditions are rather mild and can readily be satisfied by a properly designed decentralized PI-type controller. A detailed case study is also included in this work to demonstrate the properties of a fault tolerant traffic network.

Identifier

0030707406 (Scopus)

Publication Title

Proceedings of the American Control Conference

ISSN

07431619

First Page

2469

Last Page

2472

Volume

4

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