title: Optimal control strategy design based on dynamic programming for a dual-motor coupling-propulsion system.
abstract: A dual-motor coupling-propulsion electric bus (DMCPEB) is modeled, and its optimal control strategy is studied in this paper. The necessary dynamic features of energy loss for subsystems is modeled. Dynamic programming (DP) technique is applied to find the optimal control strategy including upshift threshold, downshift threshold, and power split ratio between the main motor and auxiliary motor. Improved control rules are extracted from the DP-based control solution, forming near-optimal control strategies. Simulation results demonstrate that a significant improvement in reducing energy loss due to the dual-motor coupling-propulsion system (DMCPS) running is realized without increasing the frequency of the mode switch.
authors.affiliation: National Engineering Laboratory for Electric Vehicles, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China.
authors.forename: Shuo
authors.initials: S
authors.lastname: Zhang
authors.affiliation: National Engineering Laboratory for Electric Vehicles, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China.
authors.forename: Chengning
authors.initials: C
authors.lastname: Zhang
authors.affiliation: National Engineering Laboratory for Electric Vehicles, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China.
authors.forename: Guangwei
authors.initials: G
authors.lastname: Han
authors.affiliation: National Engineering Laboratory for Electric Vehicles, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China.
authors.forename: Qinghui
authors.initials: Q
authors.lastname: Wang
mesh_terms: D008962:Models, Theoretical; D011381:Programming Languages