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US 11,441,629 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.
Claims20
A device for measuring residual braking torque applied by a brake pad to a brake rotor of a vehicle, the device comprising:
- a force sensor positioned on the brake pad, the force sensor configured to output signals indicating at least one of shear force and pressure applied by the brake pad to the brake rotor;
- and
- an electrical circuit connecting the force sensor to an electronic control unit, the electronic control unit configured to receive the signals from the force sensor,
- wherein the electronic control unit is configured to:
- perform 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 to the brake rotor, 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 the intensity of the signals over time, wherein the oscillations are associated with an angular velocity of rotation of a wheel of the vehicle;
- and
- convert the residual braking torque indicator to a measurement of residual braking torque applied by the brake pad to the brake rotor using a calibration comprising a relationship between the residual torque indicator and residual braking torque.
4 more elements
A device for measuring residual braking torque applied by a brake pad of a vehicle, the device comprising:
- a force sensor positioned on the brake pad, the force sensor configured to output signals indicating at least one of shear force and pressure applied by the brake pad;
- and
- an electrical circuit connecting the force sensor to an electronic control unit, the electronic control unit configured to receive the signals from the force sensor,
- wherein the electronic control unit is configured to:
- perform 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
- convert 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.
4 more elements
A device for measuring residual braking torque applied by a brake pad of a vehicle, the device comprising:
- a force sensor positioned on the brake pad, the force sensor configured to output signals indicating at least one of shear force and pressure applied by the brake pad;
- a band-pass filter operating at around 50 Hz;
- and
- an electrical circuit connecting the force sensor to an electronic control unit, the electronic control unit configured to receive the signals from the force sensor,
- wherein the electronic control unit is configured to:
- perform 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;
- convert 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.
4 more elements
Dependencies are inferred from the claim text.