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http://dx.doi.org/10.7467/KSAE.2013.21.6.135

Nonlinear Static Model-based Feedforward Control Algorithm for the EGR and VGT Systems of Passenger Car Diesel Engines  

Park, Inseok (Automotive Control and Electronics Laboratory (ACE Lab), Hanyang University)
Park, Yeongseop (Department of Automotive Engineering, Graduate School, Hanyang University)
Hong, Seungwoo (Department of Automotive Engineering, Graduate School, Hanyang University)
Chung, Jaesung (Department of Automotive Engineering, Graduate School, Hanyang University)
Sohn, Jeongwon (Department of Automotive Engineering, Graduate School, Hanyang University)
Sunwoo, Myoungho (Department of Automotive Engineering, Hanyang University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.21, no.6, 2013 , pp. 135-146 More about this Journal
Abstract
This paper presents a feedforward control algorithm for the EGR and VGT systems of passenger car diesel engines. The air-to-fuel ratio and boost pressure are selected as control indicators and the positions of EGR valve and VGT vane are used as control inputs of the EGR and VGT controller. In order to compensate the non-linearity and coupled dynamics of the EGR and VGT systems, we have proposed a non-linear model-based feedforward control algorithm which is obtained from static model inversion approach. It is observed that the average modeling errors of the feedforward algorithm is about 2% using stationary engine experiment data of 225 operating conditions. Using a feedback controller including proportional-integral, the modeling error is compensated. Furthermore, it is validated that the proposed feedforward algorithm generates physically acceptable trajectories of the actuator and successfully tracks the desired values through engine experiments.
Keywords
Passenger car diesel engine; Exhaust gas recirculation; Variable geometry turbocharger; Non-linear air system model; Feedforward control;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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