초록 ▼

A hybrid vehicle includes an engine for producing propulsive forces, an electric motor for selectively generating assistive drive forces in addition to the propulsive forces and generating electric energy converted from the propulsive forces, and an energy storage unit for selectively supplying elec

A hybrid vehicle includes an engine for producing propulsive forces, an electric motor for selectively generating assistive drive forces in addition to the propulsive forces and generating electric energy converted from the propulsive forces, and an energy storage unit for selectively supplying electric energy to the electric motor and storing electric energy converted by the electric motor. A control system for the hybrid vehicle has an idling state detecting unit for detecting an idling state of the engine, a rotational speed variation detector for detecting a rotational speed variation of the engine in the idling state of the engine, a memory for storing a plurality of fuzzy rules and membership functions to determine an operating state of the motor to suppress the rotational speed variation of the engine from the rotational speed variation of the engine according to a fuzzy inference process, a goodness-of-fit calculator for determining respective goodnesses of fit of the fuzzy rules based on the membership functions from the rotational speed variation of the engine in the idling state of the engine, a goodness-of-fit combiner for combining the goodnesses of fit as determined by the goodness-of-fit calculator to determine an operating state of the motor, a motor controller for controlling the electric motor based on the operating state of the motor as determined by the goodness-of-fit combiner.

대표청구항 ▼

[ What is claimed is:] [7.] A control system in a hybrid vehicle having an engine for producing propulsive forces, an electric motor for selectively generating assistive drive forces in addition to the propulsive forces and electric energy converted from the propulsive forces or regenerative braking

[ What is claimed is:] [7.] A control system in a hybrid vehicle having an engine for producing propulsive forces, an electric motor for selectively generating assistive drive forces in addition to the propulsive forces and electric energy converted from the propulsive forces or regenerative braking of the hybrid vehicle, and an energy storage unit for selectively supplying electric energy to the electric motor and storing electric energy converted by the electric motor, comprising:idling state detecting means for detecting an idling state of the engine;rotational speed variation detecting means for detecting a rotational speed variation of the engine in the idling state of the engine;fuzzy inference memory means for storing a plurality of fuzzy rules and membership functions relating to the rotational speed variation of the engine in the idling state;fuzzy inference processing means for calculating a desired operating state for the electric motor for providing an assistive drive force or an electrical energy generation based on said detected rotational speed variation in the idling state for increasing or decreasing, respectively, the rotational speed of the engine by using said fuzzy rules and membership functions stored in said fuzzy inference memory means; andmotor control means for controlling the electric motor based on said desired operating state of the electric motor as calculated by said fuzzy inference processing means.