Electric vehicle drive train with rollback detection and compensation

Patent · Sat Jan 01 04:00:00 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 Co
• 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

/318/180/701/
associated
compensating
compensation
controller
corresponding
counteract
desired
desired direction
detecting
detection
direction
directions
drive
drive train
driven
driver
electric
electric motor
electric vehicle
function
gear
incline
indicates
intended
linear
magnitude
motor
movement
nonconstant
opposite
opposite direction
opposite directions
output
permits
rollback
rotatable
rotational
select
selector
sensor
speed
squared
started
torque
torque output
train
upward
vehicle
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