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Model Predictive Control for Nonlinear Energy Management of a Power Split Hybrid Electric Vehicle


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Abstract

Model predictive control (MPC), owing to the capability of dealing with nonlinear and constrained problems, is quite promising for optimization. Different MPC strategies are investigated to optimize HEV nonlinear energy management for better fuel economy. Based on Bellmanu2019s principle, dynamic programming is firstly used in the limited horizon to obtain optimal solutions. By considering MPC as a nonlinear programming problem, sequential quadratic programming (SQP) is used to obtain the descent directions of control variables and the current control input is further derived. To reduce computation and meet the requirements of real-time control, the nonlinear model of the system is approximated to be linear and linear time-varying (LTV) MPC strategy is studied. Simulation results demonstrate that the nonlinear MPC using SQP algorithm has best fuel economy, while the MPC using approximated linear model is superior in saving computation time.


Keywords


Pages

Total Pages: 13

DOI
10.31209/2018.100000062


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Published

Online Article

JOURNAL INFORMATION


ISSN PRINT: 1079-8587
ISSN ONLINE: 2326-005X
DOI PREFIX: 10.31209
10.1080/10798587 with T&F
IMPACT FACTOR: 0.652 (2017/2018)
Journal: 1995-Present




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