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Title: Fuzzy logic electric vehicle regenerative antiskid braking and traction control system

An regenerative antiskid braking and traction control system using fuzzy logic for an electric or hybrid vehicle having a regenerative braking system operatively connected to an electric traction motor, and a separate hydraulic braking system includes sensors for monitoring present vehicle parameters and a processor, responsive to the sensors, for calculating vehicle parameters defining the vehicle behavior not directly measurable by the sensor and determining if regenerative antiskid braking control, requiring hydraulic braking control, and requiring traction control are required. The processor then employs fuzzy logic based on the determined vehicle state and provides command signals to a motor controller to control operation of the electric traction motor and to the brake controller to control fluid pressure applied at each vehicle wheel to provide the appropriate regenerative braking control, hydraulic braking control, and traction control. 123 figs.
Inventors:
Issue Date:
OSTI Identifier:
7186525
Assignee:
Ford Motor Co., Dearborn, MI (United States) IDO; EDB-94-166768
Patent Number(s):
US 5358317; A
Application Number:
PPN: US 8-001965
Contract Number:
AC07-90ID13019
Resource Relation:
Patent File Date: 7 Jan 1993
Research Org:
Ford Motor Co
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; BRAKES; COMPUTERIZED CONTROL SYSTEMS; FUZZY LOGIC; ELECTRIC-POWERED VEHICLES; HYBRID ELECTRIC-POWERED VEHICLES; HYDRAULIC EQUIPMENT; REGENERATIVE BRAKING; CONTROL SYSTEMS; EQUIPMENT; MACHINE PARTS; MATHEMATICAL LOGIC; ON-LINE CONTROL SYSTEMS; ON-LINE SYSTEMS; VEHICLES; 330300* - Advanced Propulsion Systems- Electric-Powered Systems; 330400 - Advanced Propulsion Systems- Hybrid Systems