Control system for hybrid vehicle

Abstract

Abstract A hybrid vehicle includes an engine (1) for producing propulsive forces, an electric motor (2) 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 (5) for selectively supplying electric energy to the electric motor (2) and storing electric energy converted by the electric motor (2). A control system (7-10) for the hybrid vehicle includes an accelerated/decelerated state detecting unit (15,31,7) for detecting an accelerated/decelerated state of the hybrid vehicle, a memory for storing a plurality of fuzzy rules and membership functions to determine an operating state of the electric motor (2) from the accelerated/decelerated state 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 accelerated/decelerated state as detected by the accelerated/decelerated state detecting unit (15,31,7), a goodness-of-fit combiner for combining the goodnesses of fit as determined by the goodness-of-fit calculating unit to determine an operating state of the motor (2), and a motor controller (8) for controlling the electric motor (2) based on the operating state of the motor (2) the goodness-of-fit combiner.

Inventors

• 👤 Shigeru Ibaraki

Bibliographic Details