Aerotech’s new AMG LP (Low Profile) 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 LP series is ideal for directing optics, lasers, antennas,
and sensors at high speed to precise pointing angles. Typical
applications include missile seeker test and calibration, electro-optical
sensor and FLIR testing, optical testing of sensors in a vacuum,
and angular testing of inertial sensors such as gyros, MEMS, and
accelerometers. The AMG LP 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.
Low Profile
By incorporating our low profile direct-drive rotary stages, the
LP series is capable of speeds and accelerations that are significantly
higher than other competing products of this size. These gimbals
have a lower profile compared to competing products within given
torque ranges. This results in a smaller and more effective gimbal
for many applications where beam height and chamber volume are
of utmost concern. Customers with only limited azimuth travel
requirements can have the slip-ring removed for an even lower
overall height. Keeping the optical path lower helps improve overall
test accuracy. Based on the ADRS rotary stage, the AMG LP provides
a high accuracy, smooth motion solution with low maintenance and
high reliability.
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 0.87 to 0.32 µrad with
Aerotech controls. Built-in azimuth slip ring provides for continuous
rotation with no cable wrap up.
Superior Mechanical Design Features
High-quality, low-profile bearings maximize performance with respect
to wobble, moment stiffness, and rotating friction. Travel limits
and 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 for 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
payloads with offset CGs.
Direct-Drive Motors for Outstanding Control
To maximize positioning and velocity performance, AMG LP 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, high acceleration, and high speeds.
Since it is a slotless, ironless design, there is zero cogging,
meaning 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.
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