Electrostatic Gyro Drift Rate Compensation Study.

Abstract

The Micro-Electrostatic Gyro (MESG) is a whole-angle two-axis instrument which is suitable for strapdown applications. The rotor of the MESG is a 1 cm solid beryllium sphere. Electrostatic bearing torques cause the rotor spin axis to drift in inertial space. A mathematical model of the drift rate had been derived under a previous contract. The purpose of the present contract was to evaluate the accuracy of the model in predicting MESG drift rates. Drift rate data was used for determining the coefficients of the model, and the calibrated model was used for predicting MESG drift rates. The predicted drift rates were compared to actual drift rates. A total of 17 tests was conducted with two MESGs. Other special tests were conducted for evaluating the magnitudes of individual error sources. The statistics of all tests were used for determining the drift rate model accuracy. The rms drift rate errors were approximately 0.05 deg/hr/axis for the tests conducted. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1970
Accession Number
AD0877844

Entities

People

  • A. P. Andrews

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Beryllium
  • Coefficients
  • Compensation
  • Contracts
  • Data Science
  • Errors
  • Information Science
  • Mathematical Models
  • Models
  • Statistics

Readers

  • Computational Modeling and Simulation
  • Inertial Navigation Systems.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster