TY - JOUR JF - joc-isice JO - JoC VL - 15 IS - 4 PY - 2022 Y1 - 2022/1/01 TI - Designing of LQIG method for controlling the wastegate of a turbocharged diesel engine to increase engine output power using experimental results of engine test chamber laboratory TT - طراحی روش LQIG‌ برای کنترل دریچه هدر یک موتور دیزل توربوشارژ برای افزایش توان خروجی موتور با استفاده از نتایج تجربی آزمایشگاه اتاق تست موتور N2 - In this paper, first, using a test set on a turbocharged diesel engine in the engine test room, a nonlinear model is obtained and it is linearized around several operation points. Then, for the linear models, a linear quadratic integral Gaussian controller (LQIG) with variable parameters as function of engine speed is designed and simulated. In the proposed method, by controlling the wastegate, the boost produced by the turbocharger can be controlled at all engine speeds (especially the lower and middle speeds) with high performance response, thereby improving the output power and engine torque in all speeds. The closed loop control system is simulated and evaluated in the presence of noise and model uncertainty. The simulation results show the better performance and higher robustness in comparison with PID and LQR controllers. SP - 1 EP - 12 AU - Ghahremani, Nematollah AU - Mortazavi, Reza AU - Barati, Ali Ahmad AD - Malek Ashtar University of technology,Tehran KW - Diesel engine KW - wastegate KW - LQIG controller KW - nonlinear model. UR - http://joc.kntu.ac.ir/article-1-724-en.html DO - 10.52547/joc.15.4.1 ER -