Aerotech’s AMG position and rate gimbal mounts provide ultra-precise
angular position, rate, and acceleration for development and production
testing of a wide range of systems. The AMG series is ideal for
directing optics, lasers, antennas, and sensors at high speed
to very precise pointing angles. Typical applications include
missile seeker test and calibration, LIDAR, electro-optical sensor
and FLIR testing, airborne targets tracking, optical testing of
space-based sensors in a vacuum, and angular testing of inertial
sensors such as gyros, MEMS, accelerometers, and inertial reference
units. The AMG gimbal design incorporates recent Aerotech rotary
stage design improvements to provide high performance at an affordable
price. The finest quality motors, bearings, and encoders are integrated
into precision-machined housings to ensure peak performance. The
AMG position and rate gimbals provide precise angular motion with
the high performance customers expect from Aerotech products.
Accurate 360° Positioning and Rate Generation
Direct-drive brushless torque motors, with rare-earth magnets
and high-accuracy angular transducers, are coupled directly to
precision shafts for accurate and smooth 360° continuous motion.
The absence of gear trains and other drive mechanisms eliminates
position error contributions due to mechanical hysteresis and
backlash. Directly-coupled high-resolution position transducers
ensure highly accurate and repeatable positioning.
A wide-range of performance feedback grades is available. Typical
line gimbal resolution ranges from 1.0 to 0.13 µrad with
Aerotech controls. The built-in azimuth slip ring provides for
continuous rotation with no cable wrap up.
Direct-Drive Motors for Outstanding Control
To maximize positioning and velocity performance, AMG gimbal mounts
utilize Aerotech’s high torque S-series brushless, slotless
servomotors. These motors have all of the advantages of a brushless
direct-drive motor — no brushes to wear, no gear trains
to maintain, and high acceleration and high speeds. Since it is
a slotless, ironless design, there is zero cogging, meaning that
there is absolutely no torque ripple. This results in smoother
motion throughout travel and more precise positioning. These motors
are available in different winding configurations to work with
high or low voltage power supplies.
Superior Mechanical Design Features
Large diameter, matched-set ABEC-7 bearings maximize performance
with respect to wobble, moment stiffness, and rotating friction.
The large diameter bearing permits large payload capacity without
compromising performance. Casting gimbal yokes provide high stiffness
to maintain gimbal accuracy under dynamic conditions. Travel limits,
hardstops, and brakes are available as standard options.
Mirror and Alternate Payload Accommodation
A variety of mirror cell diameters are available for standard
optic applications. We also provide for custom payload attachment
solutions to accommodate various device interfaces. Each gimbal
mirror cell can be modified or replaced with different shaped
cells to accommodate sensors or other odd shaped payloads. We
understand customer payloads vary and our engineers have a variety
of solutions to implement offset CG payloads.
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