Adaptive braking system utilizing doppler radar
Abstract
Abstract AN ADAPTIVE BRAKING SYSTEM FOR A VEHICLE IN WHICH DOPPLER RADAR DEVICES ARE USED TO MEASURE WHEEL SPEEDS AND VEHICLE SPEED AND PROVIDE ELECTRICAL SIGNALS PROPORTIONAL THERETO. THESE SIGNALS ARE PROCESSES AND COMBINED TO PROVIDE FURTHER SIGNALS PROPORTIONAL TO WHEEL SLIP, RATE OF CHANGE OF WHEEL SLIP AND VEHICLE ACCELERATION. A SYSTEM FOR DETECTING PEAKS OF VEHICLE ACCELERATION AND TRANSMITTING A SIGNAL INDICATING THE OCCURENCE OF THE SUCH A PEAK MAY ALSO BY INCLUDED. THESE SEVERAL SIGNALS ARE TRANSMITTED TO A PROGRAMMER AND/OR LOGIC ELEMENT. OUTPUTS FROM THE PROGRAMMER AND/OR LOGIC ELEMENT ARE RECEIVED BY BRAKE PRESSURE MODULATORS TO VARY THE PRESSURE APPLIED BY THE OPERATOR THEREBY MAINTAINING MAXIMUM BRAKING TORQUE. A LIMITER CAN BE INCORPORATED TO PREVENT SLIP VALUES BETWEEN THE TIRE AND ROAD SURFACE FROM EXCEEDING SOME PREDETERMINED MAXIMUM.
Inventors
- 👤 Richard L Lewis
- 👤 George B Hickner
- 👤 William P Harokopus
Bibliographic Details
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