US 12,071,994 B2
Residual braking torque indication devices, systems, and methods
Mattia Solari, Barge (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 Jul. 27, 2022, as Appl. No. 17/875,175.
Application 17/875,175 is a continuation of application No. 16/584,429, filed on Sep. 26, 2019, granted, now 11,441,629.
Application 16/584,429 is a continuation of application No. 15/658,188, filed on Jul. 24, 2017, granted, now 10,451,130, issued on Oct. 22, 2019.
Claims priority of application No. 102016000077944 (IT), filed on Jul. 25, 2016.
Prior Publication US 2022/0364620 A1, Nov. 17, 2022
Int. Cl. B60T 17/22 (2006.01); F16D 65/08 (2006.01); F16D 66/02 (2006.01); F16D 66/00 (2006.01); F16D 121/28 (2012.01)
CPC F16D 66/021 (2013.01) [B60T 17/22 (2013.01); B60T 17/221 (2013.01); F16D 65/08 (2013.01); B60T 2201/12 (2013.01); F16D 2066/001 (2013.01); F16D 2066/005 (2013.01); F16D 2066/006 (2013.01); F16D 2121/28 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for measuring residual braking torque, comprising:
with an electronic control unit,
receiving signals output from a force sensor positioned on a vehicle brake pad, the signals indicating at least one of braking shear force and braking pressure;
performing at least one of frequency domain and time domain analysis of the signals from the force sensor to determine a residual braking torque indicator that indirectly indicates the residual braking torque applied by the brake pad, without direct measurement of the residual braking torque, wherein the determination of the residual braking torque indicator includes detection of a structure of oscillations of an intensity of the signals over time, wherein the oscillations are associated with an angular velocity of rotation of a wheel of the vehicle; and
converting the residual braking torque indicator to a measurement of residual braking torque applied by the brake pad using a calibration comprising a relationship between the residual torque indicator and residual braking torque.