A precision inertial angular vibration measuring system
Abstract
An instrumentation system is described which permits high precision broadband angular vibration measurements or real time image motion compensation in typical aircraft environments. The system consists of a proprietary dynamic inertial angular displacement sensor calibrated by a special purpose table which is capable of producing and measuring sinusoidal motions up to one milliradian peak amplitude from 1 Hz to over 500 Hz. For a typical flight application, system accuracy is estimated as 0.3 arc seconds, 1 sigma for data in the optimum 70 Hz to 500 Hz band, and 1.4 arc seconds from 1 Hz to 1500 Hz. These estimates include environmental effects. Actual flight data is presented which verifies the estimated accuracy.
- Publication:
-
Shock Vibration Information Center Shock Vibration Bulletin
- Pub Date:
- September 1980
- Bibcode:
- 1980SVICB........1M
- Keywords:
-
- Displacement Measurement;
- Measuring Instruments;
- Vibration Measurement;
- Accuracy;
- Aircraft Equipment;
- Angular Velocity;
- Inertial Platforms;
- Performance Tests;
- Servocontrol;
- Instrumentation and Photography