Vehicle braking system
First Claim
1. A closed loop vehicle deceleration control system, comprising:
- (a) means for generating a driver'"'"'s demand signal representing a deceleration requirement;
(b) a plurality of pressure control channels for controlling the application of the vehicle brakes;
said pressure control channels being themselves controlled by said driver'"'"'s demand signal fed forward thereto;
(c) means for measuring the vehicle deceleration;
(d) a closed loop feedback circuit which is adapted to produce a deceleration error signal representative of the difference between a deceleration level demanded by the driver and the actual vehicle deceleration;
(e) means for producing a correction signal for the driver'"'"'s demand signal in dependence upon an integral function of the deceleration error; and
(f) means for adjusting the driver'"'"'s demand signal in accordance with said correction signal.
1 Assignment
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Accused Products
Abstract
A closed loop vehicle deceleration control system comprising a plurality of pressure control channels controlled by a fed forward driver'"'"'s demand signal representing a deceleration requirement, and a closed loop feedback circuit which is adapted to produce a deceleration error signal representative of the difference between a deceleration level demanded by the driver and the actual vehicle deceleration. The driver'"'"'s demand signal is arranged to be adjusted by means of a correction signal dependent on an integral function of the deceleration error. Adjustment of the demand signals is made by way of a multiplier in which one input is the driver'"'"'s demand signal and the other input is a correction signal derived from a deceleration integrator. The correction signal is provided continuously by the integrator which the closed deceleration loop is adapted to be disabled at any selected time by disconnection of the deceleration error from the integrator input.
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Citations
14 Claims
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1. A closed loop vehicle deceleration control system, comprising:
- (a) means for generating a driver'"'"'s demand signal representing a deceleration requirement;
(b) a plurality of pressure control channels for controlling the application of the vehicle brakes;
said pressure control channels being themselves controlled by said driver'"'"'s demand signal fed forward thereto;(c) means for measuring the vehicle deceleration; (d) a closed loop feedback circuit which is adapted to produce a deceleration error signal representative of the difference between a deceleration level demanded by the driver and the actual vehicle deceleration; (e) means for producing a correction signal for the driver'"'"'s demand signal in dependence upon an integral function of the deceleration error; and (f) means for adjusting the driver'"'"'s demand signal in accordance with said correction signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- (a) means for generating a driver'"'"'s demand signal representing a deceleration requirement;
Specification