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US 12,071,994 B2Granted
Residual braking torque indication devices, systems, and methods
AssigneeITT Italia S.r.l.
InventorsMattia Solari, Marco Terranova
Life of this patent
Estimating the term…
Abstract
Various residual braking torque indication devices, systems, and methods are described. The devices, systems, and methods can include a sensorized brake pad. An output signal of the sensorized brake pad can be processed to provide an indication of a residual braking torque. The residual braking torque indicator can be calibrated to reference data to provide an actual measurement of the residual braking torque.
Claims19
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.
2 more elements
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 a frequency 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 specific peak structure within a frequency spectrum of the signals, wherein the specific peak structure is associated with an angular velocity of rotation of a wheel of the vehicle that indirectly indicates the residual braking torque applied by the brake pad;
- and
- converting the residual braking torque indicator to a measurement of the residual braking torque applied by the brake pad using a calibration comprising a relationship between the residual torque indicator and residual braking torque.
2 more elements
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 frequency 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 said performing the frequency domain analysis comprises using a band-pass filter operating at around 50 Hz;
- and
- converting the residual braking torque indicator to a measurement of the residual braking torque applied by the brake pad using a calibration comprising a relationship between the residual torque indicator and residual braking torque.
3 more elements
Dependencies are inferred from the claim text.