Safe- and eco-driving control for connected and automated electric vehicles using analytical state-constrained optimal solution.

Jihun Han 1 Antonio Sciarretta 1 Luis Leon Ojeda 1 Giovanni de Nunzio 1 Thibault Laurent 1
1 IFPEN - IFP Energies nouvelles
Abstract : Speed advisory systems have been proposed for connected vehicles in order to minimize energy consumption over a planned route. However, for their practical diffusion, these systems must adequately take into account the presence of preceding vehicles. In this paper, a safe- and eco-driving control system is proposed for connected and automated vehicles to accelerate or decelerate optimally while guaranteeing vehicle safety constraints. We define minimum intervehicle distance and maximum road speed limit as state constraints, and formulate an optimal control problem minimizing the energy consumption. Then, an analytical state-constrained solution is derived for real-time use. A feasible range of terminal conditions is established, and such conditions are adjusted to guarantee the existence of the analytical solution. The proposed system is evaluated through simulation for various driving scenarios of the preceding vehicle. Results show that it can significantly reduce energy consumption and also avoid collision without increasing trip time. Moreover, the proposed system can serve as an energy-efficient advanced cruise control by setting a short prediction horizon.
Keywords : Driving control Automated electrical vehicles Index Terms-Connected and automated vehicles Electric vehicles Speed advisory system Adaptive cruise control Eco-driving control Optimal control
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Jihun Han, Antonio Sciarretta, Luis Leon Ojeda, Giovanni de Nunzio, Thibault Laurent. Safe- and eco-driving control for connected and automated electric vehicles using analytical state-constrained optimal solution.. IEEE Transactions on Intelligent Vehicles, Institute of Electrical and Electronics Engineers, 2018, 3 (2), pp.163-172. ⟨10.1109/TIV.2018.2804162⟩. ⟨hal-01990552⟩

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