Methods and apparatus to detect warped rotors based on brake pressure
Methods and apparatus are disclosed that detect warped rotors. An example apparatus includes a controller configured to receive a brake pressure and one or more wheel parameters of a vehicle associated with a first braking event, determine a presence of a warped rotor based on a comparison of the brake pressure to a threshold pressure, and identify a wheel of the vehicle associated with the warped rotor based on the brake pressure and the one or more wheel parameters.
1. An apparatus comprising:
a controller configured to:
receive a brake pressure and a wheel angle of a vehicle associated with a first braking event;
determine a presence of a warped rotor based on a comparison of the brake pressure to a threshold pressure; and
identify a wheel of the vehicle associated with the warped rotor based on the brake pressure and the wheel angle by:
receiving, for each wheel of a vehicle, brake pressure and wheel angle data associated with one or more subsequent braking events;
correlating the brake pressure with the wheel angle of each wheel for each of the one or more subsequent braking events; and
associating the wheel having a maximum pressure occurring at a same wheel angle as the first braking event in the one or more subsequent braking events with the warped rotor.
2. The apparatus of claim 1 , wherein the controller determines the threshold pressure based on an average pressure of the first braking event.
3. The apparatus of claim 1 , wherein the controller is further configured to send an alert to a driver of the vehicle identifying the wheel of the vehicle associated with the warped rotor.
4. The apparatus of claim 1 , wherein the controller correlates the brake pressure and the wheel angle based on timestamps associated with the brake pressure and the wheel angle.
5. The apparatus of claim 1 , wherein at least one of the one or more subsequent braking events occurs when the vehicle is in a turn.
6. A tangible computer readable storage medium comprising instructions that, when executed, cause a machine to at least:
receive a brake pressure and a wheel angle of a vehicle associated with a first braking event;
determine a presence of a warped rotor based on a comparison of the brake pressure to a threshold pressure; and
identify a wheel of the vehicle associated with the warped rotor based on the brake pressure and the wheel angle by:
receiving, for each wheel of a vehicle, brake pressure and wheel angle data associated with one or more subsequent braking events;
correlating the brake pressure with the wheel angle of each wheel for each of the one or more subsequent braking events; and
associating the wheel having a maximum pressure occurring at a same wheel angle as the first braking event in the one or more subsequent braking events with the warped rotor.
7. The tangible computer readable storage medium of claim 6 , wherein the threshold pressure is based on an average pressure of the first braking event.
8. The tangible computer readable storage medium of claim 6 , wherein the instructions further cause the machine to send an alert to a driver of the vehicle identifying the wheel of the vehicle associated with the warped rotor.
9. The tangible computer readable storage medium of claim 6 , wherein the brake pressure and the wheel angle are correlated based on timestamps associated with the brake pressure and wheel angle.
10. The tangible computer readable storage medium of claim 6 , wherein at least one of the one or more subsequent braking events occurs when the vehicle is in a turn.
11. A method comprising:
receiving a brake pressure and a wheel angle of a vehicle associated with a first braking event;
determining a presence of a warped rotor based on a comparison of the brake pressure to a threshold pressure; and
identifying a wheel of the vehicle associated with the warped rotor based on the brake pressure and the wheel angle by:
receiving, for each wheel of a vehicle, brake pressure and wheel angle data associated with one or more subsequent braking events;
correlating the brake pressure with the wheel angle of each wheel for each of the one or more subsequent braking events; and
associating the wheel having a maximum pressure occurring at a same wheel angle as the first braking event in the one or more subsequent braking events with the warped rotor.
12. The method of claim 11 , wherein the threshold pressure is determined based on an average pressure of the first braking event.
13. The method of claim 11 , further including sending an alert to a driver of the vehicle identifying the wheel of the vehicle associated with the warped rotor.
14. The method of claim 11 , wherein the brake pressure and the wheel angle are correlated based on timestamps associated with the brake pressure and the wheel angle.