US PATENT SUBCLASS 701 / 74
.~.~.~ Having particular means to determine a reference value for wheel slippage or pseudo-vehicle speed

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}
70  DF  .~ Indication or control of braking, acceleration, or deceleration {3}
71  DF  .~.~ Antiskid, antilock, or brake slip control {6}
74.~.~.~ Having particular means to determine a reference value for wheel slippage or pseudo-vehicle speed {1}
75  DF  .~.~.~.~> Correction or modification

DEFINITION

Classification: 701/74

Having particular means to determine a reference value for wheel slippage or pseudo-vehicle speed:

Antiskid or antilock control under 71 wherein the electrical data processing system or calculating computer employs a technique to calculate a value associated with a velocity or velocity variation gradient for use in determining a skidding or locking condition.

SEE OR SEARCH CLASS

303, Fluid-Pressure Brake and Analogous Systems,

163, for speed control using a slip ratio as related to fluid-pressure brakes.