Authors: Jun Yang; Xiaohong Jiao; Jian Wang; Fengyan Yi
Addresses: Department of Automotive Engineering, Shandong Jiaotong University, Jinan, Shandong, China ' Department of Electrical Engineering, Yanshan University, Qinhuangdao, Hebei, China ' Department of Automotive Engineering, Shandong Jiaotong University, Jinan, Shandong, China ' Department of Automotive Engineering, Shandong Jiaotong University, Jinan, Shandong, China
Abstract: The regulation problem of the residual gas mass (RGM) is investigated in this paper based on the stochastic control theory. By the physics, the dynamic model of the RGM is developed in which the residual gas fraction (RGF) as a crucial system parameter is modelled as a stochastic process with Markov property. The regulator is given by utilising control design technology for the discrete-time jump system. The performance of the closed-loop system with the proposed controller, which is presented by the numerical simulation, shows that the RGM can be regulated to different levels according to the requirement of the internal exhaust gas recirculated (EGR) and has narrower dispersion under the same level compared with the open-loop controller. Compared with the PI controller, the proposed feedback controller has faster response in the transient working conditions.
Keywords: residual gas mass; RGM; stochastic regulation; residual gas fraction; RGF.
International Journal of Modelling, Identification and Control, 2017 Vol.28 No.1, pp.70 - 77
Received: 09 Dec 2015
Accepted: 01 Jul 2016
Published online: 03 Jul 2017 *