Method and system for control of trailer sway

A system comprising:

• one or more sensors configured to provide sensor data from onboard a vehicle that is towing a trailer, the vehicle and trailer collectively comprising a vehicle-trailer system;
• and
• a processor configured to be coupled to the one or more sensors while onboard the vehicle and configured to at least facilitate:
• monitoring a trailer sway of the trailer using the sensor data, based on one or more parameters of the sensor data representing the trailer sway and application of a band-pass filter to the one or more parameters;
• and
• mitigating the trailer sway, via instructions provided by the processor to one or more braking systems of the vehicle-trailer system, when it is determined that the trailer sway of the trailer is sufficient to warrant mitigation based on the one or more parameters of the sensor data representing the trailer sway and the application of the band-pass filter to the one or more parameters, wherein the processor is further configured to at least facilitate:
• monitoring the trailer sway of the trailer using the sensor data, based on a hitch articulation angle of the vehicle, the trailer, or both and a yaw rate of the vehicle, along with an application of the band-pass filter to the hitch articulation angle and to the yaw rate;
• mitigating the trailer sway, via the instructions provided by the processor to the one or more braking systems of the vehicle, the trailer, or both, when it is determined that the trailer sway of the trailer is sufficient to warrant mitigation based on the hitch articulation angle, the yaw rate, and the application of the band-pass filter to the hitch articulation angle and to the yaw rate;
• and
• mitigating the trailer sway, via the instructions provided by the processor to a trailer braking system of the trailer for application of a calculated uniform braking based on a driver trailer brake gain setting in addition to yaw-rate and hitch articulation angle.

A vehicle configured to tow a trailer, the vehicle comprising:

• a braking system;
• one or more sensors disposed onboard the vehicle and configured to provide sensor data;
• and
• a processor disposed onboard the vehicle, the processor coupled to the braking system and to the one or more sensors, and configured to at least facilitate:
• monitoring a trailer sway of the trailer using the sensor data, based on one or more parameters of the sensor data representing the trailer sway and application of a band-pass filter to the one or more parameters;
• and
• mitigating the trailer sway, via instructions provided by the processor to one or more braking systems of the vehicle, the trailer, or both, when it is determined that the trailer sway of the trailer is sufficient to warrant mitigation based on the one or more parameters of the sensor data representing the trailer sway and the application of the band-pass filter to the one or more parameters, wherein the processor is further configured to at least facilitate:
• monitoring the trailer sway of the trailer using the sensor data, based on a hitch articulation angle of the vehicle, the trailer, or both and a yaw rate of the vehicle, along with an application of the band-pass filter to the hitch articulation angle and to the yaw rate:
• mitigating the trailer sway, via the instructions provided by the processor to the one or more braking systems of the vehicle, the trailer, or both, when it is determined that the trailer sway of the trailer is sufficient to warrant mitigation based on the hitch articulation angle, the yaw rate, and the application of the band-pass filter to the hitch articulation angle and to the yaw rate;
• and
• mitigating the trailer sway, via the instructions provided by the processor to a trailer braking system of the trailer for application of a calculated uniform braking based on a driver trailer brake gain setting in addition to yaw-rate and hitch articulation angle.