抄録
The fuzzy "sliding mode" control method is proposed in this paper for the design of a closed-loop fuel-injection system. A fuzzy logic control using variable structure system is combined with current oxygen sensors to maintain the stoichiometric air-to-fuel ratio. The fuzzy cell technique is also proposed to implement the designed controller on nonfuzzy processors. The proposed method offers good potential for the design of an engine controller since : (1) bias and large chattering errors due to the hysteresis of the oxygen sensor can be reduced by utilizing fuzzy logic control inside the boundary layer of the sliding mode ; (2) robustness and stability are analytically guaranteed by the hybrid control structure. Simulation studies based on a typical engine-only model demonstrate the usefulness of the proposed method.
