Testresults of digital caged strapdown DTGs
Abstract
Strapdown DTGs with digital cage loops, accuracy of 0.15-0.01 degree/hr, and high dynamic ranges were tested using loops of conventional pulse-width modulation type. The stability, repeatability, and linearity were determined in scale factor tests. Gyro bias, repeatability, and stability were degraded by the digital cage loops in comparison to test results with analog cage loops. Error sources were measured, including H-switch, current source, capacity load on wiring, and the influence of the torquer inductance and rotor amplitude.
- Publication:
-
Ortung und Navigation
- Pub Date:
- 1982
- Bibcode:
- 1982OrNav.......10H
- Keywords:
-
- Gyroscopic Stability;
- Performance Tests;
- Rotary Gyroscopes;
- Strapdown Inertial Guidance;
- Circuit Diagrams;
- Digital Systems;
- Instrument Errors;
- Motion Simulators;
- Torque;
- Space Communications, Spacecraft Communications, Command and Tracking