A hybrid model predictive control for traffic flow stabilization and pollution reduction of freeways |
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| Institution: | 1. Institute for Computer Science and Control, Systems and Control Laboratory, Hungarian Academy of Sciences, Kende utca 13-17, 1111 Budapest, Hungary;2. Budapest University of Technology and Economics, Department of Control for Transportation and Vehicle Systems, Stoczek utca 2., 1111 Budapest, Hungary;1. Department of Chemistry, University of Lleida, ETSEA, Av. Rovira Roure 191, 25198, Lleida, Spain;2. Department of Food Science and Technology, University of Lleida, ETSEA, Av. Rovira Roure 191, 25198, Lleida, Spain;1. Dipartimento di Informatica Sistemistica e Comunicazione, Università degli Studi Milano-Bicocca, Viale Sarca 336, I-20126 Milan, Italy;2. Department of Experimental Oncology, European Institute of Oncology, Via Ripamonti 435, 20141 Milan, Italy;1. Laboratory of Applied Thermodynamics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;2. IVECO S.p.A., via Puglia 35, 10156 Torino, Italy |
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| Abstract: | In this work a control system is developed and analyzed for the suppression of moving jamwaves and the reduction of pollutant concentrations near motorways. The system is based on the second-order macroscopic freeway traffic model METANET, joined by an emission dispersion model, introduced in a previous work of the authors. For the control tasks dedicated controllers are designed, both using the nonlinear model predictive control method. The control objectives require a distinction in the utilized control measures, thus different controllers are designed and used in predefined control modes. The first mode of the controller is responsible for keeping pollutant concentrations below prescribed limits under stable conditions. The second mode of the controller is working in case of a shockwave threat, aiming for traffic stabilization. Between the control modes switching is based on an appropriate rule set that satisfies the stability of the controlled system. The hybrid controller structure is realized by a finite automata. A complex case study is presented for the evaluation of the suggested controller. |
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