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This paper is concerned with the air/fuel ratio control of direct injected, spark ignition (SI) combustion engines. The air/fuel ratio is essential for torque generation together with emissions and requires therefore a precise regulation. The system dynamics are modeled for controller design as a first order linear parameter-varying (LPV) system plus parameter varying time delay where the time delay...
This paper presents an application of LPV input-output model identification and LPV controller synthesis to a turbocharged spark ignited combustion engine with experimental results. The complexity of identified LPV input-output models is reduced using parameter-set mapping in combination with nonlinear optimization. A model-structure suitable for a direct transformation to a polytopic LPV state-space...
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