METHODS AND SYSTEMS FOR BRAKING DIFFERENT AXLES OF A VEHICLE USING A DECELERATION VALUE
A method for controlling braking of a vehicle having a first axle and a second axle includes the steps of obtaining a deceleration value pertaining to an input from a driver of the vehicle, braking the first axle with a first pressure, braking the second axle with a second pressure that is substantially equal to the first pressure if the deceleration value has not exceeded a predetermined threshold, and braking the second axle with a third pressure that is greater than the first pressure if the deceleration value has exceeded the predetermined threshold.
1 . A method for controlling braking of a vehicle having a first axle and a second axle, the method comprising the steps of:
obtaining a deceleration value pertaining to an input from a driver of the vehicle;
braking the first axle with a first pressure;
braking the second axle with a second pressure that is substantially equal to the first pressure if the deceleration value has not exceeded a predetermined threshold; and
braking the second axle with a third pressure that is greater than the first pressure if the deceleration value has exceeded the predetermined threshold.
2 . The method of claim 1 , wherein the step of braking the second axle with the third pressure further comprises the step of:
braking the second axle with the third pressure if the deceleration value has exceeded the predetermined threshold, and provided further that the deceleration value has not subsequently been less than a second predetermined threshold.
3 . The method of claim 2 , further comprising the step of:
braking the second axle with a fourth pressure that is substantially equal to the first pressure if the deceleration value has exceeded the predetermined threshold and has subsequently been less than the second predetermined threshold.
4 . The method of claim 1 , further comprising the steps of:
obtaining a request corresponding to a requested braking torque from the driver; and
determining the deceleration value based on the requested braking torque.
5 . The method of claim 4 , wherein the deceleration value comprises a measure of a requested deceleration of the vehicle.
6 . The method of claim 1 , wherein
the first axle is a regenerative braking axle; and
the second axle is a non-regenerative braking axle.
7 . A method for controlling braking of a vehicle having a regenerative braking axle and a non-regenerative braking axle, the method comprising the steps of:
obtaining a deceleration value pertaining to an input from a driver of the vehicle;
braking the regenerative braking axle and the non-regenerative braking axle using single channel blending provided that the deceleration value is less than or equal to a predetermined threshold; and
braking the regenerative braking axle and the non-regenerative braking axle using dual channel blending if the deceleration value is greater than the predetermined threshold.
8 . The method of claim 7 , further comprising the step of:
transitioning from the single channel blending to the dual channel blending, if the deceleration value is greater than the predetermined threshold and single channel blending is being used.
9 . The method of claim 7 , further comprising the step of:
transitioning from the dual channel blending to the single channel blending, if each of the following conditions is satisfied:
the deceleration value is less than the predetermined threshold;
dual channel blending is being used; and
the deceleration value is less than a second predetermined threshold.
10 . The method of claim 7 , further comprising the step of:
braking the regenerative braking axle and the non-regenerative braking axles with at least substantially equal pressures provided that the deceleration value is less than or equal to the predetermined threshold.
11 . The method of claim 10 , further comprising the step of:
braking the non-regenerative braking axle with a first pressure and the regenerative braking axle with a second pressure, less than the first pressure, if the deceleration value is greater than the predetermined threshold.
12 . The method of claim 7 , further comprising the steps of:
obtaining a request corresponding to a requested braking torque from the driver; and
determining the deceleration value based on the requested braking torque.
13 . The method of claim 12 , wherein the deceleration value comprises a measure of a requested deceleration of the vehicle.
14 . A system for controlling braking of a vehicle having a regenerative braking axle and a non-regenerative braking axle, the system comprising:
a sensor configured to detect a request corresponding to a requested braking torque; and
a processor coupled to the sensor and configured to facilitate:
determining a deceleration pertaining to the vehicle based on the requested braking torque;
braking the regenerative braking axle and the non-regenerative braking axle using single channel blending provided that the deceleration value is less than or equal to a predetermined threshold; and
braking the regenerative braking axle and the non-regenerative braking axle using dual channel blending if the deceleration value is greater than the predetermined threshold.
15 . The system of claim 14 , wherein the deceleration value comprises a measure of a requested deceleration of the vehicle.
16 . The system of claim 14 , wherein the processor is further configured to facilitate:
transitioning from the single channel blending to the dual channel blending, if the deceleration value is greater than the predetermined threshold and single channel blending is being used.
17 . The system of claim 14 , wherein the processor is further configured to at least facilitate transitioning from the dual channel blending to the single channel blending, if each of the following conditions is satisfied:
the deceleration value is less than the predetermined threshold;
dual channel blending is being used; and
the deceleration value is less than a second predetermined threshold.
18 . The system of claim 14 , wherein the processor is further configured to facilitate:
braking the regenerative braking axle and the non-regenerative braking axles with at least substantially equal pressures provided that the deceleration value is less than or equal to the predetermined threshold.
19 . The system of claim 18 , wherein the processor is further configured to facilitate:
braking the non-regenerative braking axle with a first pressure and the regenerative braking axles with a second pressure, less than the first pressure, if the deceleration value is greater than the predetermined threshold.
20 . The system of claim 14 , further comprising:
a memory configured to store the predetermined threshold.