A Model Predictive Control Approach for Fuel Economy Improvement of a Series Hydraulic Hybrid Vehicle

Tri-Vien Vu, Chih-Keng Chen and Chih-Wei Hung
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Tri-Vien Vu: Department of Mechanical and Automation Engineering, Da-yeh University, 168 University Road, Dacun, Changhua 51591, Taiwan
Chih-Keng Chen: Department of Mechanical and Automation Engineering, Da-yeh University, 168 University Road, Dacun, Changhua 51591, Taiwan
Chih-Wei Hung: Department of Mechanical and Automation Engineering, Da-yeh University, 168 University Road, Dacun, Changhua 51591, Taiwan

Energies, 2014, vol. 7, issue 11, 1-24

Abstract: This study applied a model predictive control (MPC) framework to solve the cruising control problem of a series hydraulic hybrid vehicle (SHHV). The controller not only regulates vehicle velocity, but also engine torque, engine speed, and accumulator pressure to their corresponding reference values. At each time step, a quadratic programming problem is solved within a predictive horizon to obtain the optimal control inputs. The objective is to minimize the output error. This approach ensures that the components operate at high efficiency thereby improving the total efficiency of the system. The proposed SHHV control system was evaluated under urban and highway driving conditions. By handling constraints and input-output interactions, the MPC-based control system ensures that the system operates safely and efficiently. The fuel economy of the proposed control scheme shows a noticeable improvement in comparison with the PID-based system, in which three Proportional-Integral-Derivative (PID) controllers are used for cruising control.

Keywords: cruising control; fuel economy; model predictive control (MPC); multi-input multi-output (MIMO); series hydraulic hybrid vehicle (SHHV) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2014
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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