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International Journal of Automotive Technology > Volume 19(2); 2018 > Article
International Journal of Automotive Technology 2018;19(2): 345-358.
doi: https://doi.org/10.1007/s12239-018-0033-0
MODEL PREDICTIVE COORDINATED CONTROL FOR DUAL-MODE POWER-SPLIT HYBRID ELECTRIC VEHICLE
Yunlong Qi, Changle Xiang, Weida Wang, Boxuan Wen, Feng Ding
Beijing Institute of Technology
ABSTRACT
Power-split hybrid electric vehicles (HEVs) have great potential fuel efficiency and have attracted extensive research attention with regard to their control system. The coordinated controller in HEV plays an important role in tracking the optimal state reference generated by the energy management strategy (EMS), so as to reach the desired fuel efficiency. Meanwhile, the coordinated controller also has a significant impact on driving performance. To improve its performance, the design of a model predictive control (MPC) based coordinated controller in power-split HEV is presented. First, a non-linear, time-varying constrained control oriented transmission model of a dual-mode power-split HEV is formulated to describe this control problem. Then, to solve this problem, the non-linear part in the transmission model is linearised, and a linear MPC is used to obtain the control signals for the motors and engine at each time step. To meet the requirements of real-time computation, a fast MPC method is also applied to reduce the online computation effort. Simulations and experiments demonstrate the effectiveness of the proposed MPC-based coordinated controller.
Key Words: Hybrid electric vehicle, Coordinated control, Fuel economy, Model predictive control, Fast MPC method
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