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Pseudo Direct Drive
Aerospace Actuator

Magnomatics have developed an ultra-light fault tolerant PDD motor for the extreme environments of a rudder flight control surface Electro-Mechanical Actuator.
The PDD motor has a magnetic gear at its heart which provides a unique functionality - a passively resettable torque-fuse to prevent jamming on overloads. The gear action also provides for a very low inertia system
The motor is able to deliver full load torque with a failed phase-bank and each phase bank is mechanically, magnetically and thermally isolated from each other for maximum reliability and full duplex redundancy
Advantages
•Highest torque density
•Fault tolerant
•Compact design
•High reliability, low maintenance
•Inherent torque fuse
•Very low inertia
•Standard power electronics

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