Electric vehicle drive train with rollback detection and compensation

Patent · Sat Jan 01 00:00:00 EST 1994

OSTI ID:869684

Konrad, Charles E ^[1]

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1. Roanoke, VA

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.

• Research Organization: Ford Motor Company, Detroit, MI (United States)
• DOE Contract Number: AC07-90ID13019
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): US 5376869
• OSTI ID: 869684
• Country of Publication: United States
• Language: English

Related Subjects

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/