Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Reexamination Certificate
2005-01-18
2005-01-18
Cuchlinski, Jr., William A. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
C180S402000, C180S422000
Reexamination Certificate
active
06845309
ABSTRACT:
A power steering system includes at least one motor to assist the operator of a vehicle in turning the wheels and steering the vehicle and at least one computer or microprocessor controller. One of the processors adjusts the motor assist torque to reduce the driver effort based on specified requirements defined by boost curves. A second microprocessor controller uses an algorithm to calculate the output of the power steering motor, and compare the relationship between the driver torque and the power assist torque. If the relationship between the two is out of specified bounds, then the power steering assist is deemed inappropriate and the power system may go to a power-off state to assure that the motor does not generate an undesirable torque that has not been requested by the driver.
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Killins Dale C.
Recker Darrel A.
Stopper, Jr. Robert A.
Zeid Ashraf A.
Brinks Hofer Gilson & Lione
Cuchlinski Jr. William A.
Hernandez Olga
Visteon Global Technologies Inc.
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