Congestion and Emissions Reduction in Freeway Traffic Networks via Supervisory Event-triggered Control. Issue 1 (July 2017)

• Record Type: Journal Article
• Authors: Ferrara, A.; Pasquale, C.; Sacone, S.; Siri, S.
• Is Part Of: IFAC-PapersOnLine. Volume 50:Issue 1(2017)
• Page Start: 4240
• Page End: 4245
• Publication Date: 2017-07
• Subjects: Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2017.08.827
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: This paper proposes an innovative control scheme for regulating traffic in freeway networks via ramp metering in order to reduce congestion and traffic emissions. The control scheme is composed by a supervisor, acting at a higher level, which receives measurements from the whole network and periodically makes a prediction on the system evolution, and by local feedback controllers, acting at a lower level. These latter are extended PI-ALINEA controllers which compute the control action not only on the basis of measurements immediately downstream the on-ramp, as in standard PI-ALINEA, but also on the basis of other measurements or predictions referred to farther locations which are time-varying and communicated by the supervisor. The supervisor decides when the control law of extended PI-ALINEA controllers needs to be changed according to an event-triggered logic.