System for controlling the braking members of a vehicle on wheels

Abstract

Abstract IN A VEHICLE ON WHEELS WITH HYDRAULIC BRAKING, A SYSTEM FOR REDUCING THE BRAKING ORDER GIVEN BY THE PILOT AS A FUNCTION OF THE DECELERATION OF THE BRAKED WHEELS DUE TO THEIR BRAKING AND THEN AS A FUNCTION OF THEIR ACCELERATION DUE TO THE REDUCTION. THE SYSTEM COMPRISES, FOR EACH BRAKED WHEEL, A DEVICE ADAPTED TO SUPPLY A SIGNAL PROPORTIONAL TO THE SPEED OF THE BRAKED WHEEL, AND A DIFFERENTIATOR CIRCUIT CONTROLLED BY AT LEAST ONE SUCH SIGNAL WHICH GIVES A SIGNAL MEASURING THE ACCELERATION. A FIRST UNI-DIRECTIONAL VOLTAGE-THRESHOLD CIRCUIT IS CONTROLLED BY THE ACCELERATION SIGNAL AND PRODUCES AND OUTPUT SIGNAL ONLY IF THE ACCELERATION SIGNAL CORRESPONDS TO A DECELERATION HAVING AN AMPLITUDE EXCEEDING A SELECTED VALUE, AND AN IMPEDANCE NETWORK COMPRISING AT LEAST ONE CAPACITANCE IS CHARGED BY THE OUTPUT SIGNAL OF THE FIRST UNI-DIRECTIONAL CIRCUIT. A SECOND UNI-DIRECTIONAL CIRCUIT SI CONTROLLED BY THE ACCELERATION SIGNAL AND PRODUCES AN OUTPUT SIGNAL ONLY IF THE ACCELERATION SIGNAL CORRESPONDS TO AN ACCELERATION. AN AMPLIFIER WITH IMPEDANCES OF WHICH AT LEAST ONE AUTOMATICALLY DECREASES WITH THE INPUT SIGNAL TO THE AMPLIFIER, IS CONTROLLED BY THE OUTPUT SIGNAL OF THE SECOND UNI-DIRECTIONAL CONDUCTOR, WHICH DISCHARGES THE CAPACITANCE OF THE IMPEDANCE NETWORK THROUGH THE IMPEDANCE OF THE AMPLIFIER, AND A CIRCUIT IS CONTROLLED BY THE VOLTAGE OF THE CAPACITANCE AND OPERATES A PRESSURE-REDUCING ELECTROVALVE TO PROPORTIONALLY REDUCE THE BRAKING PRESSURE ORDERED BY THE PILOT.

Inventors

• 👤 Lene Lucien

Bibliographic Details