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Title: Control system and method for a hybrid electric vehicle

Abstract

A vehicle system controller (20) is presented for a LSR parallel hybrid electric vehicle having an engine (10), a motor (12), wheels (14), a transmission (16) and a battery (18). The vehicle system controller (20) has a state machine having a plurality of predefined states (22-32) that represent operating modes for the vehicle. A set of rules is defined for controlling the transition between any two states in the state machine. The states (22-32) are prioritized according to driver demands, energy management concerns and system fault occurrences. The vehicle system controller (20) controls the transitions from a lower priority state to a higher priority state based on the set of rules. In addition, the vehicle system controller (20) will control a transition to a lower state from a higher state when the conditions no longer warrant staying in the current state. A unique set of output commands is defined for each state for the purpose of controlling lower level subsystem controllers. These commands serve to achieve the desire vehicle functionality within each state and insure smooth transitions between states.

Inventors:
 [1];  [2];  [2];  [3]
  1. (Northville, MI)
  2. (Dearborn, MI)
  3. (Birmingham, MI)
Publication Date:
Research Org.:
Midwest Research Institute
OSTI Identifier:
874132
Patent Number(s):
US 6321143
Assignee:
Ford Motor Company (Dearborn, MI) NREL
DOE Contract Number:  
AC36-83CH10093
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
control; method; hybrid; electric; vehicle; controller; 20; lsr; parallel; engine; 10; motor; 12; wheels; 14; transmission; 16; battery; 18; machine; plurality; predefined; 22-32; represent; operating; modes; set; rules; defined; controlling; transition; prioritized; driver; demands; energy; management; concerns; fault; occurrences; controls; transitions; priority; based; addition; conditions; warrant; staying; current; unique; output; commands; purpose; level; subsystem; controllers; serve; achieve; functionality; insure; smooth; electric vehicle; hybrid electric; /701/180/477/

Citation Formats

Phillips, Anthony Mark, Blankenship, John Richard, Bailey, Kathleen Ellen, and Jankovic, Miroslava. Control system and method for a hybrid electric vehicle. United States: N. p., 2001. Web.
Phillips, Anthony Mark, Blankenship, John Richard, Bailey, Kathleen Ellen, & Jankovic, Miroslava. Control system and method for a hybrid electric vehicle. United States.
Phillips, Anthony Mark, Blankenship, John Richard, Bailey, Kathleen Ellen, and Jankovic, Miroslava. Mon . "Control system and method for a hybrid electric vehicle". United States. https://www.osti.gov/servlets/purl/874132.
@article{osti_874132,
title = {Control system and method for a hybrid electric vehicle},
author = {Phillips, Anthony Mark and Blankenship, John Richard and Bailey, Kathleen Ellen and Jankovic, Miroslava},
abstractNote = {A vehicle system controller (20) is presented for a LSR parallel hybrid electric vehicle having an engine (10), a motor (12), wheels (14), a transmission (16) and a battery (18). The vehicle system controller (20) has a state machine having a plurality of predefined states (22-32) that represent operating modes for the vehicle. A set of rules is defined for controlling the transition between any two states in the state machine. The states (22-32) are prioritized according to driver demands, energy management concerns and system fault occurrences. The vehicle system controller (20) controls the transitions from a lower priority state to a higher priority state based on the set of rules. In addition, the vehicle system controller (20) will control a transition to a lower state from a higher state when the conditions no longer warrant staying in the current state. A unique set of output commands is defined for each state for the purpose of controlling lower level subsystem controllers. These commands serve to achieve the desire vehicle functionality within each state and insure smooth transitions between states.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}

Patent:

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