High Torque/Small Angle Rotary Incremental Actuator
The Moog High Torque Type 5 rotary incremental actuator is a compact, closely integrated design made up of two key elements: a motor and a multi-stage speed reducer. The motor is the heritage 1.5-degree permanent magnet stepper with a relatively high unpowered holding torque. The multi-stage speed reducer, consisting of an input planetary stage and a harmonic drive, offers a large reduction ratio (320:1), zero backlash, low weight, and high torsional stiffness. Coaxial nesting of the motor and transmission drive elements gives the unit an optimized geometry. All the electrical elements, such as motors and position sensors, can be redundant with little or no change in actuator envelope.
Moog is a proven leader in components, subsystems, and systems for spacecraft of all sizes, from smallsats to GEO spacecraft. Moog has been successfully providing spacecraft controls, inspace propulsion, and major subsystems for science, military, and commercial operations for more than 60 years.