A multi-class, two-axis high-dynamic rate table for development, large-scale production, in-process testing, calibration, and final inspection of inertial components and instruments, including large IMUs, IRUs, AHRSs, and INSs from FOG, RLG, and mechanical classes.
Inner roll and outer pitch axes with continuous angular freedom.
Absolute optical encoders are directly mounted to the axes for high-precision positioning.
Outer-axis acceleration reaches ±900°/s² with 1,274 N·m maximum torque.
ACCUDYNA controller integrated in a 36U standard console with GUI and remote interfaces.
The FDD-221-HD is intended for development, large-scale production, in-process testing, calibration, and final inspection of inertial components and instruments. The catalog specifically lists large IMUs, IRUs, AHRSs, and INSs belonging to FOG, RLG, and mechanical classes.
The platform provides two axes and two degrees of freedom: inner roll and outer pitch. The outer axis uses a stow lock to support safe loading and unloading of the UUT. Precision pre-loaded angular contact ball bearings permit load capacities up to 50 kg. All systems include the necessary interconnecting cables and mating connectors for customer interface. Wedge levelers allow alignment in two directions.
The servo system combines direct-drive brushless torque motors, absolute optical encoders, precision pre-loaded angular contact ball bearings, a precision-machined tabletop, precision-bored bodies, and slip-ring assemblies.
Inner roll and outer pitch deliver continuous angular freedom for high-dynamic testing.
The catalog specifies very powerful direct-drive brushless torque motors as part of the high-reliability servo architecture.
Absolute optical encoders are directly mounted to the axes and provide high-precision positioning performance.
Power rings and shielded signal rings provide electrical access to the UUT and enable continuous-rotation simulation.
Independent axis capabilities from the FDD-221-HD standard parameter sheet.
100 Hz bandwidth · ±2,500°/s² acceleration · 115 N·m torque
50 Hz bandwidth · ±900°/s² acceleration · 1,274 N·m torque
P-P on both axes · 1.5 arcsec repeatability
0.0001% over 360° interval on both axes
Control and readout functions are managed by the ACCUDYNA controller and can be configured around the customer's application. Position, rate, and acceleration may be controlled manually through the GUI or remotely through RS232/RS422 computer interfaces.
The catalog positions FDD-221-HD for development, large-scale production, in-process testing, calibration, and final inspection.
Designed for high-throughput production-oriented inertial testing programs.
Supports development of large inertial components and instruments.
Supports precision in-process verification and test sequences.
Ultra-accurate positioning and rate capabilities for calibration tasks.
Intended for final inspection of inertial components and instruments.
Catalog-listed test articles include large IMUs, IRUs, AHRSs, and INSs from FOG, RLG, and mechanical classes.
Values below follow the ACCUDYNA Version F · August 2024 catalog.
Open the official two-page ACCUDYNA catalog for the product overview, system architecture, options, and complete parameter sheet.
The FDD-221-HD catalog lists several customer-configurable options around communications, the UUT interface, and tabletop configuration.
UDP via LAN up to 1 kHz
Special slip ring configurations
Custom-designed tabletops
Wide variety of slip ring capsule designs and wiring schematics
Answers are limited to information supported by the catalog.
Contact ACCUDYNA to discuss application-specific rate, positioning, loading, interface, and tabletop requirements.
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