US PATENT SUBCLASS 701 / 42
.~.~.~ Feedback, transfer function or proportional and derivative (P&D) control

Current as of: June, 1999
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701 /   HD   DATA PROCESSING: VEHICLES, NAVIGATION, AND RELATIVE LOCATION

1  DF  VEHICLE CONTROL, GUIDANCE, OPERATION, OR INDICATION {19}
36  DF  .~ Vehicle subsystem or accessory control {5}
41  DF  .~.~ Steering control {3}
42.~.~.~ Feedback, transfer function or proportional and derivative (P&D) control

DEFINITION

Classification: 701/42

Feedback, transfer function or proportional and derivative (P&D) control:

(under subclass 41) Steering control wherein the electrical data processing system or calculating computer utilizes a response signal corresponding to the status of the steering system, to regulate or monitor the steering operation or where the system shifts from proportional control to a combination of proportional and derivative control.