Title: Design of nonlinear hierarchical controller for intake manifold pressure and boost pressure of turbocharged gasoline engine

Authors: Yunfeng Hu; Yaohan Wang; Jinwu Gao; Xun Gong; Zhiguo Tang; Jinghua Zhao

Addresses: State Key Laboratory of Automotive Simulation and Control, College of Communication Engineering, Jilin University, Changchun, 130000, China ' State Key Laboratory of Automotive Simulation and Control, College of Communication Engineering, Jilin University, Changchun, 130000, China ' State Key Laboratory of Automotive Simulation and Control, College of Communication Engineering, Jilin University, Changchun, 130000, China ' School of Artificial Intelligence, Jilin University, Changchun, 130000, China ' College of Communication Engineering, Jilin University, Changchun, 130000, China ' Computer College, Jilin Normal University, Siping, 136000, China

Abstract: Precise tracking control of airpath systems, including intake manifold pressure and boost pressure, is key to ensuring the performance of turbocharged gasoline engines. Aiming at the above objective, this paper proposed a nonlinear hierarchical controller to address the nonlinearity and coupling of airpath systems. First, a control-oriented airpath model is established based on the working principle of a turbocharged gasoline engine. Second, the upper nonlinear controller is deduced in the framework of triple-step control method, whose asymptotic stability is guaranteed by linear system theory. Then, the lower controller contains a throttle opening transformation by MAP (lookup tables) and a nonlinear observer-based controller to track the turbine speed calculated by the upper controller and address the unknown disturbance, thus the actual control inputs consisting of the throttle and wastegate opening position are obtained. Finally, the tracking performance and robustness of the proposed controller are verified by co-simulation using AMESim and Simulink.

Keywords: turbocharged gasoline engine; hierarchical control; nonlinear control; asymptotic stability; intake manifold pressure; boost pressure; model establishment; triple-step control method; nonlinear observer; unknown disturbance.

DOI: 10.1504/IJVD.2020.113916

International Journal of Vehicle Design, 2020 Vol.82 No.1/2/3/4, pp.161 - 186

Received: 29 Oct 2019
Accepted: 03 May 2020
Published online: 01 Apr 2021 *

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