Title :
Hybrid command governors for idle speed control in gasoline direct injection engines
Author :
Albertoni, Leonardo ; Balluchi, Andrea ; Casavola, Alessandro ; Gambelli, Claudio ; Mosca, Edoardo ; Sangiovanni-Vincentelli, Alberto L.
Author_Institution :
Dipt. di Sistemi ed Inf., Firenze Univ., Italy
Abstract :
The idle speed control problem for automotive GDI engines is formalized as a constrained optimal control problem for a hybrid model of the GDI engine, where fuel consumption is the cost function to be minimized. A sub-optimal but effective and easily implementable solution is obtained by resorting to the command governor methodology for a discrete-time abstraction of the hybrid model. Simulation results of the hybrid closed-loop system are presented.
Keywords :
angular velocity control; automobiles; closed loop systems; discrete time systems; fuel optimal control; internal combustion engines; suboptimal control; automotive engines; closed loop system; command governor methodology; cost function; discrete time abstraction; fuel consumption; gasoline direct injection engines; hybrid model; optimal control; speed control; suboptimal implementable solution; Automotive engineering; Character generation; Cost function; Diesel engines; Fuel economy; Nonlinear control systems; Optimal control; Petroleum; Power system modeling; Velocity control;
Conference_Titel :
American Control Conference, 2003. Proceedings of the 2003
Print_ISBN :
0-7803-7896-2
DOI :
10.1109/ACC.2003.1239115
