摘要：AbstractIn this paper, a decoupling control method is proposed, for Diesel engines equipped with the variable-geometry turbine (VGT) and exhaust gas recirculation (EGR). Based on the philosophy of active disturbance rejection control (ADRC) in a backstepping structure. The outer-loop controller tracks the boost pressure (p2) by manipulating the desired pre-turbine pressure (p3). In the inner-loop, a multiple-input multiple-output (MIMO) ADRC control algorithm is designed forp3and exhaust gas recirculation rate (XEGR). To enhance the transient response, a model-based feedforward controller assisted by tracking differentiator is used. The proposed controller is validated on a high-fidelity model by compared with existing parallel single-input single output ADRC solution. Results show that the proposed method can reduce the settling time by 50% in the step response test, and reduce the integrated absolute error (IAE) ofp2 andXEGRby 40% and 51%, respectively, in the FTP75 driving cycle.
关键词：KeywordsAir systemdecouplingbacksteppingMIMO ADRCmodel information feedforward
