Iterative adaptive compensation of modeling uncertainties in emission control of freeway traffic

J. Tar, I. Rudas, László Nádai, Teréz A. Várkonyi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Control of the emission rate of exhaust fumes as well as vehicle density in various road segments of freeway traffic practically is desirable. For this purpose hydrodynamic macroscopic models are used that approximate the traffic as the motion of some compressible fluid. They normally have analytical ambiguities due to using various finite element approximations of spatial partial differential operators and applying various analytical compressibility models. Further uncertainties stem from the estimation of the model parameters. The suggested approach is able to iteratively and adaptively refine the traffic control based on any version of the possible analytical forms. The controller has to measure vehicle densities and traffic velocities and applies variable traffic signs for prescribing velocities and allowed ingress rate from a ramp as control signals. Since the stationary solutions of the control problem are stable in the region investigated, instead of fast, really dynamic control it applies simple quasi-stationary process model and control that is a common practice in Classical Thermodynamics. The operation of the proposed method is illustrated via simulations.

Original languageEnglish
Title of host publication19th Intelligent Transport Systems World Congress, ITS 2012
PublisherIntelligent Transportation Society of America
Publication statusPublished - 2012
Event19th Intelligent Transport Systems World Congress, ITS 2012 - Vienna, Austria
Duration: Oct 22 2012Oct 26 2012

Other

Other19th Intelligent Transport Systems World Congress, ITS 2012
CountryAustria
CityVienna
Period10/22/1210/26/12

Fingerprint

Emission control
Highway systems
uncertainty
traffic
exhaust fumes
traffic sign
Traffic signs
Ventilation exhausts
Fumes
Traffic control
traffic control
Compressibility
Hydrodynamics
Compensation and Redress
Uncertainty
Thermodynamics
road
Controllers
simulation
Fluids

Keywords

  • Iterative adaptive control
  • Quasi-stationary solutions
  • Robust fixed point transformations

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Transportation

Cite this

Tar, J., Rudas, I., Nádai, L., & Várkonyi, T. A. (2012). Iterative adaptive compensation of modeling uncertainties in emission control of freeway traffic. In 19th Intelligent Transport Systems World Congress, ITS 2012 Intelligent Transportation Society of America.

Iterative adaptive compensation of modeling uncertainties in emission control of freeway traffic. / Tar, J.; Rudas, I.; Nádai, László; Várkonyi, Teréz A.

19th Intelligent Transport Systems World Congress, ITS 2012. Intelligent Transportation Society of America, 2012.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tar, J, Rudas, I, Nádai, L & Várkonyi, TA 2012, Iterative adaptive compensation of modeling uncertainties in emission control of freeway traffic. in 19th Intelligent Transport Systems World Congress, ITS 2012. Intelligent Transportation Society of America, 19th Intelligent Transport Systems World Congress, ITS 2012, Vienna, Austria, 10/22/12.
Tar J, Rudas I, Nádai L, Várkonyi TA. Iterative adaptive compensation of modeling uncertainties in emission control of freeway traffic. In 19th Intelligent Transport Systems World Congress, ITS 2012. Intelligent Transportation Society of America. 2012
Tar, J. ; Rudas, I. ; Nádai, László ; Várkonyi, Teréz A. / Iterative adaptive compensation of modeling uncertainties in emission control of freeway traffic. 19th Intelligent Transport Systems World Congress, ITS 2012. Intelligent Transportation Society of America, 2012.
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