A Technique for Compensation of Kinematic Coning Drift.
Abstract
This report documents a method developed to compensate for kinematic coning drift occurring in inertially stabilized platforms. Kinematic coning drift, which includes so-called rectified rotary vibration, is explained both mathematically and by way of example. The effects of servo bandwidth and the disturbance to inertia ratio on kinematic drift levels are investigated analytically and through computer simulation. The basic method of compensation developed uses platform gyro error signals to estimate angular changes in platform orientation. This estimate is used to recursively update a set of state variables which completely define the axis about which the platform has drifted from its desired inertial orientation. From this, the platform to inertial direction cosine matrix may be constructed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1975
- Accession Number
- ADA016774
Entities
People
- Roy H. Setterlund
Organizations
- Charles Stark Draper Laboratory