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.
