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Miniature Rotary Actuator

Miniature Rotary Actuator

New Scale Technologies Inc.'s miniature rotary actuator module has a torque of 0.17 N-m and speeds of more than 400 degrees per sec in a 60 mm diameter by 8 mm thick design. This non-inductive rotary actuator module delivers higher power output in a smaller footprint than electromagnetic pancake motors or other piezoelectric actuators. The module is non-magnetic and does not interfere with systems such as magnetometer (navigation) systems, MRI systems or variable inductors. The highly scalable design can be adjusted for dynamic performance, velocity, torque or size. The low-mass configuration withstands high-G launch accelerations.

Based on New Scale's M3 micro-mechatronic design platform, the "M3-R" rotary actuator module features integrated piezoelectric motors, tangential drive mechanism, angular motion sensor and all drive and control electronics into a compact footprint of less than 1 cubic inch. It operates on lower input voltage than other piezoelectric flat motors, accepting direct battery voltage of 24V without boost circuits. It draws less than 60W when moving. New Scale has demonstrated M3-R modules using both its SQUIGGLE and UTAF piezoelectric micro motors. In the M3-R module, multiple motors work together to achieve the required torque and speed. Each piezo motor generates ultrasonic vibrations that create tangential force that directly rotates a central shaft with high acceleration and velocity, without gears or other mechanical linkages.

Applications include guided munitions and missile systems, MRI-compatible medical devices, unmanned aerial vehicle (UAV) controls, gimbal systems and computer equipment.

Miniature Rotary Actuator
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