US 11,794,707 B2
Antilock braking systems, devices, and methods using sensorized brake pads
Stefano Serra, San Pietro Val Lemina (IT); Luca Martinotto, Legnano (IT); Daniele Donzelli, Luserna San Giovanni (IT); and Marco Terranova, Turin (IT)
Assigned to ITT Italia S.r.l., Barge (IT)
Filed by ITT Italia S.r.l., Barge (IT)
Filed on Jan. 17, 2019, as Appl. No. 16/250,856.
Application 16/250,856 is a continuation of application No. 15/448,381, filed on Mar. 2, 2017, granted, now 10,227,064.
Claims priority of application No. 102016000022599 (IT), filed on Mar. 3, 2016.
Prior Publication US 2019/0241166 A1, Aug. 8, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. B60T 8/00 (2006.01); B60T 8/52 (2006.01); B60T 8/171 (2006.01); B60T 8/172 (2006.01); B60T 8/1761 (2006.01); B60T 8/1763 (2006.01); F16D 65/092 (2006.01); F16D 66/00 (2006.01)
CPC B60T 8/52 (2013.01) [B60T 8/171 (2013.01); B60T 8/172 (2013.01); B60T 8/17616 (2013.01); B60T 8/17636 (2013.01); F16D 65/092 (2013.01); F16D 66/00 (2013.01); B60T 2210/124 (2013.01); F16D 2066/005 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A system configured to control braking of a wheel of a set of wheels of a vehicle, the system comprising:
a sensorized brake pad configured to be applied against a brake disk associated with the wheel of the vehicle during a braking application, the sensorized brake pad comprising:
a support element;
a friction material attached to the support element; and
a force sensor configured to transmit signals indicative of a force applied to the sensorized brake pad during the braking application; and
a computing system comprising a processor and a non-transitory storage, the computing system configured to:
receive the signals, including one or more first measurements, from the sensorized brake pad;
determine, using the signals from the sensorized brake pad, first anti-lock braking parameters of the wheel associated with the one or more first measurements or one or more predetermined threshold values;
control application of the sensorized brake pad against the brake disk based on the first anti-lock braking parameters;
subsequent to determining the first anti-lock braking parameters, iteratively test to determine whether a tire-road coefficient of friction between a tire of the wheel and a road has changed beyond a threshold amount;
in response to determining that the tire-road coefficient of friction has changed beyond the threshold amount, accessing a lookup table to determine second anti-lock braking parameters of the wheel based at least in part on the tire-road coefficient of friction; and
control application of the sensorized brake pad against the brake disk based on the second anti-lock braking parameters,
wherein the first anti-lock braking parameters include a first braking torque limit of the wheel and a first braking torque limit of at least one other wheel of the set of wheels, and subsequent to determining the first anti-lock braking parameters, performing iterative testing to set a deceleration profile for each wheel of the set of wheels, and set a slippage, speed, or acceleration threshold of each wheel of the set of wheels to maintain the deceleration profile, wherein the iterative testing comprises a coefficient of friction jump test to determine whether a split condition is detected, and wherein the second anti-lock braking parameters of the wheel are set differently than anti-lock braking parameters of another wheel when the split condition is detected.