An electromechanical actuator power drive unit for dynamic braking is provided, comprising an electric motor with a stator, a rotor that rotates with respect to the stator, and windings fixed to the stator. There is a control unit configured to supply a current to the windings. When the control unit is not supplying current to the windings, an electrical device allows current to flow through a parallel current path to the windings. The new current is generated by the interaction of a roller connected with a gear set to the rotor. The roller, and therefore the rotor, is urged in a rotational direction by the translational velocity of a load in contact with the roller. The new current generated by the rotating rotor flows in the opposite direction as the first current supplied by the power supply unit and creates a dynamic braking torque in the electric motor.

An electromechanical actuator power drive unit for dynamic braking is provided, comprising an electric motor with a stator, a rotor that rotates with respect to the stator, and windings fixed to the stator. There is a control unit configured to supply a current to the windings. When the control unit is not supplying current to the windings, an electrical device allows current to flow through a parallel current path to the windings. The new current is generated by the interaction of a roller connected with a gear set to the rotor. The roller, and therefore the rotor, is urged in a rotational direction by the translational velocity of a load in contact with the roller. The new current generated by the rotating rotor flows in the opposite direction as the first current supplied by the power supply unit and creates a dynamic braking torque in the electric motor.

A conveying device (1) is specified, having two frame profiles (2, 3) and a conveying roller (4), arranged in between, with a drive motor (5) and a brake (6). The drive motor (5), located closer to the first frame profile (2), is connected in this case to a power supply bus (10) positioned on the first frame profile (2), and the brake (6), located closer to the second frame profile (3), is connected to a power supply bus (12) positioned on the second frame profile (3). In an operating method for the conveying roller (4), the drive motor (5)/the brake (6) are operated with a first voltage (U1) and associated electronic controllers (17, 30) are operated with a second, lower voltage (U2). In addition, the brake (6) is completely released/ventilated only with a time delay after the application of an electric voltage to the drive motor (5) for the purpose of starting up the conveying roller (4).

A conveying device (1) is specified, having two frame profiles (2, 3) and a conveying roller (4), arranged in between, with a drive motor (5) and a brake (6). The drive motor (5), located closer to the first frame profile (2), is connected in this case to a power supply bus (10) positioned on the first frame profile (2), and the brake (6), located closer to the second frame profile (3), is connected to a power supply bus (12) positioned on the second frame profile (3). In an operating method for the conveying roller (4), the drive motor (5)/the brake (6) are operated with a first voltage (U1) and associated electronic controllers (17, 30) are operated with a second, lower voltage (U2). In addition, the brake (6) is completely released/ventilated only with a time delay after the application of an electric voltage to the drive motor (5) for the purpose of starting up the conveying roller (4).

Disclosed here is a cargo drive unit for a cargo hold of an aircraft. The cargo drive unit includes at least one driven power transmission element, which is configured to transmit drive forces to a load arranged in the cargo hold, in order to move the load inside the cargo hold. The cargo drive unit also includes a sensor unit configured to acquire at least one movement parameter of the load. The cargo drive unit also includes a control unit configured to control the power transmission element according to the acquired movement parameter. Also disclosed here is a cargo hold that includes such a cargo drive unit, and a related method for operating such a cargo hold.

Conveyor arrangement (1), comprising a conveying section (11) having a plurality of rollers (22) on which a conveyable object (9), in particular a pallet, can be conveyed, a mobile drive (30), wherein the mobile drive is movable along different positions along the conveying section (11) and the mobile drive is adapted to temporarily provide a drive power to a selected roller (22) depending on the position of the mobile drive (30) in particular by immediate contact between the mobile drive and the roller (22); wherein that the mobile drive (30) comprises scanners (40) to detect a presence of an conveyable object (9) located above the rollers (22).

Conveyor arrangement (1), comprising a conveying section (11) having a plurality of rollers (22) on which a conveyable object (9), in particular a pallet, can be conveyed, a mobile drive (30), wherein the mobile drive is movable along different positions along the conveying section (11) and the mobile drive is adapted to temporarily provide a drive power to a selected roller (22) depending on the position of the mobile drive (30) in particular by immediate contact between the mobile drive and the roller (22); wherein that the mobile drive (30) comprises scanners (40) to detect a presence of an conveyable object (9) located above the rollers (22).

Various embodiments are directed to a conveyor roller apparatus and methods of using the same. In various embodiments, a conveyor roller apparatus comprises an exterior roller shell configured to support at least a portion of an object disposed on an outer surface thereof to facilitate transportation of the object along a conveyor surface, the exterior roller shell having an at least substantially tubular configuration so as to define an interior roller portion along a central axis thereof; an internal roller housing disposed within the interior roller portion of the exterior roller shell, the internal roller housing comprising a PCB compartment defined by an internal channel within the internal roller housing that is configured for housing the PCB assembly therein; and at least one potting material disposed within the PCB compartment and configured to facilitate a dissipation of heat generated by the PCB assembly from within the PCB compartment.

Various embodiments are directed to a conveyor roller apparatus and methods of using the same. In various embodiments, a conveyor roller apparatus comprises an exterior roller shell configured to support at least a portion of an object disposed on an outer surface thereof to facilitate transportation of the object along a conveyor surface, the exterior roller shell having an at least substantially tubular configuration so as to define an interior roller portion along a central axis thereof; an internal roller housing disposed within the interior roller portion of the exterior roller shell, the internal roller housing comprising a PCB compartment defined by an internal channel within the internal roller housing that is configured for housing the PCB assembly therein; and at least one potting material disposed within the PCB compartment and configured to facilitate a dissipation of heat generated by the PCB assembly from within the PCB compartment.

A drive system for a motorized roller that includes a secondary stator external to the motorized roller. The outer shell of the motorized roller contains electrically conductive or magnetic material to form an induction, permanent-magnet, or reluctance motor with the secondary stator and boosts or bucks the torque of the motorized roller.