Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Reexamination Certificate
2008-03-12
2011-11-08
Tran, Dalena (Department: 3664)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
C188S267000, C188S267100
Reexamination Certificate
active
08055408
ABSTRACT:
A semi-active suspension system that employs magnetically controlled dampers. The semi-active suspension system includes a plurality of sensors that measure vehicle parameters in response to disturbances on the vehicle and provide sensor signals to a central controller. The central controller converts the sensor signals to a flux command signal that is representative of the force on the dampers at each wheel of the vehicle. The flux command signal is sent to a local controller that generates a coil voltage that is applied to a coil within the damper. A flux feedback signal generated by the coil is estimated or measured and is compared to the flux command signal in the local controller to adjust the coil voltage to minimize the difference between the flux command signal and the flux feedback signal to provide a response to the force without a flux delay.
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Gopalakrishnan Suresh
Namuduri Chandra S.
GM Global Technology Operations LLC
Holloway Jason
Miller John A.
Miller IP Group, PLC
Tran Dalena
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