Automatic electromechanical braking roller systems and methods

A power drive unit (PDU), comprising:

• a motorized roller configured to rotate about an axis;
• a disk configured to rotate independent from the motorized roller;
• a sensor in operable communication with the disk,
• wherein the disk is configured to contact a unit load device (ULD) in response to the ULD translating across the PDU, the disk is configured to rotate in response to the contact, and the sensor is configured to detect a speed of the ULD via the disk.

An electromechanical braking roller (EBR), comprising:

• an inner shaft;
• an electromagnetic actuator disposed around the inner shaft;
• a brake stack disposed around the inner shaft;
• a first bearing disposed around the inner shaft;
• a second bearing disposed around the inner shaft, the first bearing and the second bearing are disposed at opposite ends of the inner shaft;
• and
• a cylindrical roller member disposed around the inner shaft;
• wherein the brake stack comprises:
• a first brake disk;
• a second brake disk;
• and
• a skew roller disposed between the first brake disk and the second brake disk.