Anti-skid braking system
AssigneeRobert Bosch GmbH
InventorHeinz Leiber
Life of this patent
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Abstract
An anti-skid or anti-wheel-lock system for motor vehicles in which a rotation sensor sends signals to a processor that determines if wheel lock is imminent and then sends brake force reduction control signals to a brake force controller. The control signals are first passed through a time filter having a plurality of discrete paths with differing signal constants. The selection of the filtering time constant is made by a circuit which measures the period between control signals against a reference time and changes the filtering time constant in accordance with the results of the measurement.
Claims10
An anti-skid braking system for a vehicle having wheel brakes including a pressure inlet valve and including:
- a wheel motion transducer, associated with a vehicle wheel, for generating wheel signals related to wheel rotation;
- a brake force generator for actuating said wheel brakes with variable force;
- a processor unit for receiving said wheel signals from said wheel motion transducer and for generating first control signals for said brake force generator;
- at least one signal filter for receiving said first control signals from said processor unit and for generating second control signals which are selectively timed with respect to said first control signals;
- and
- a timing circuit for receiving said first control signals and for generating filter switching signals which are applied to said signal filter to change the time constant thereof and cause said selective timing of said second control signals.
Dependencies are inferred from the claim text.