Robust and adaptive wastegate control of turbocharged internal combustion engines

This work deals with advanced control methods for marine turbocharged internal combustion diesel engines (ICDE) equipped with a wastegate. Two fundamentally different approaches are proposed for a wastegate control - robust multivariable mixed-sensitivity and indirect output-based adaptive control. Robust multivariable controller design is rather common approach for internal combustion engines control that can be found from many papers, whilst indirect adaptive control is still novel in this area. This paper aims to determine the benefits and drawbacks of these control algorithms in their application for a wastegate control. A nonlinear model of diesel engine is derived and linearized for a control design. Both algorithms are then described, modeled and applied to this model.