Two-Axis Gimbal

A CMM Optic two-axis gimbal is designed to sustain environmental and performance requirements typical of unmanned aerial vehicle (UAV) sensor systems. These gimbals contain compact direct drive brushless DC motors, high-precision rotary encoders, precision ball bearings and optional solid-state gyroscopic sensors.


An optically-coated aluminum mirror or alternative optical payload is supported on either side by a one-piece yoke comprising the elevation axis assembly. The azimuth motor and encoder are contained in a black anodized aluminum base. Precision ball bearings in duplex configurations maximize radial and axial stiffness in both axes while ensuring smooth, low friction and reliable service.

An optional digital control system can be configured for a wide variety of electronic interfaces and operational modes including vector scanning and line-of-sight stabilization. The hardware consists of a 16-bit 150 MHz Digital Signal Processor (DSP) and 16-bit dual Digital-to-Analog Converters (DAC). Serial flash allows for in-the-field code updates.


Aperture Size ≥ 25 mm
Mirror Substrate Aluminum, Beryllium, SiC, glass
Optical Coating UV to IR coatings
Angular Tilt up to ± 20° optical
(±10° mechanical)
Resolution 10μ-radian
Small Signal Bandwidth > 350 Hz
Accuracy 50 μ-radian
Controller DSP-based digital servo
Digital/analog user interface
Advanced algorithms for high bandwidth
PC-based diagnostics and signal monitoring
Integrated position sensor

Literature for Two-Axis Gimbal

two axis gimbal