Robust non-linear control applied to internal combustion engine air path using Particle Swarm Optimization

The goal of this paper is to control intake´s manifold pressure of a downsized turbocharged internal combustion gasoline engine. Since intake´s manifold pressure is an image of the torque that the engine develops, tracking an appropriated intake´s manifold pressure reference implies tracking driver´s reference torque. This paper proposes a novel control architecture based on Q-LPV H_infin closed loop shaping and a metaheuristic PSO (particle swarm optimization) algorithm that enables non control-experts to tune the H_infin engine controller. Stability margins and most significant singular values plots are computed. Time domain simulations have been performed using a non-linear 1.2 liter gasoline engine model.