Fuzzy modelling techniques applied to an air/fuel ratio controlsystem

摘要

Fuzzy modelling techniques have been applied to the simulatedcontrol of the air/fuel ratio. The method enables the identification ofstructured nonlinear models, due to the existence of the G and Hmatrices, that could be readily adapted online. The model used withinthe control scheme has been selected using the Young informationcriteria, which is used to assess its appropriateness, normally linearmodels, for control. The performance of the model, as part of thecombined feedforward/feedback controller, appears satisfactory. When thenonlinear and time varying nature of the automotive engine system isconsidered, the fuzzy modelling methods are considered to offer somepotential for engine control applications