Coordinate alignment for elastic bodies
Abstract
Numerous references on the problem of transfer alignment appear in the literature. In most cases, the problem is solved by the technique of vector matching; i.e., using the differences of common vectors in some specified reference frame to form observations that are then used in a filter to generate the desired estimates. This paper emphasizes those techniques that effect transfer alignment in the presence of elastic-body motion. The first section of the paper presents an overview of the coordinate-alignment problem in the presence of elastic motion. The remainder of the paper discusses models for the different system configurations that can be used in solving the transfer-alignment problem. In particular, models describing the relative misalignment between two points on an elastic body in terms of measured quantities for various combinations of inertial measurement units are presented. Also, measurement models are presented for acceleration and angular-rate vector-matching techniques.
- Publication:
-
NAECON 1977; Proceedings of the National Aerospace and Electronics Conference
- Pub Date:
- 1977
- Bibcode:
- 1977naec.conf..665H
- Keywords:
-
- Adaptive Filters;
- Alignment;
- Control Stability;
- Coordinate Transformations;
- Elastic Bodies;
- Military Aircraft;
- Avionics;
- Elastodynamics;
- Fire Control;
- Reference Systems;
- Physics (General)