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Title: Electric vehicle drive train with rollback detection and compensation

Abstract

An electric vehicle drive train includes a controller for detecting and compensating for vehicle rollback, as when the vehicle is started upward on an incline. The vehicle includes an electric motor rotatable in opposite directions corresponding to opposite directions of vehicle movement. A gear selector permits the driver to select an intended or desired direction of vehicle movement. If a speed and rotational sensor associated with the motor indicates vehicle movement opposite to the intended direction of vehicle movement, the motor is driven to a torque output magnitude as a nonconstant function of the rollback speed to counteract the vehicle rollback. The torque function may be either a linear function of speed or a function of the speed squared.

Inventors:
 [1]
  1. Roanoke, VA
Issue Date:
Research Org.:
Ford Motor Company, Detroit, MI (United States)
OSTI Identifier:
869684
Patent Number(s):
5376869
Assignee:
General Electric Company (Schenectady, NY)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60L - PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60W - CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION
DOE Contract Number:  
AC07-90ID13019
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
electric; vehicle; drive; train; rollback; detection; compensation; controller; detecting; compensating; started; upward; incline; motor; rotatable; opposite; directions; corresponding; movement; gear; selector; permits; driver; select; intended; desired; direction; speed; rotational; sensor; associated; indicates; driven; torque; output; magnitude; nonconstant; function; counteract; linear; squared; vehicle drive; opposite direction; opposite directions; electric vehicle; electric motor; drive train; torque output; desired direction; /318/180/701/

Citation Formats

Konrad, Charles E. Electric vehicle drive train with rollback detection and compensation. United States: N. p., 1994. Web.
Konrad, Charles E. Electric vehicle drive train with rollback detection and compensation. United States.
Konrad, Charles E. Sat . "Electric vehicle drive train with rollback detection and compensation". United States. https://www.osti.gov/servlets/purl/869684.
@article{osti_869684,
title = {Electric vehicle drive train with rollback detection and compensation},
author = {Konrad, Charles E},
abstractNote = {An electric vehicle drive train includes a controller for detecting and compensating for vehicle rollback, as when the vehicle is started upward on an incline. The vehicle includes an electric motor rotatable in opposite directions corresponding to opposite directions of vehicle movement. A gear selector permits the driver to select an intended or desired direction of vehicle movement. If a speed and rotational sensor associated with the motor indicates vehicle movement opposite to the intended direction of vehicle movement, the motor is driven to a torque output magnitude as a nonconstant function of the rollback speed to counteract the vehicle rollback. The torque function may be either a linear function of speed or a function of the speed squared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

Patent:

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