Multisensor
Abstract
The Charles Stark Draper Laboratory (CSDL) multisensor is based upon a single-degree-of-freedom integrating gyroscope with the support axis purposely unbalanced to obtain pendulosity. Acceleration is obtained by monitoring the torque rebalance about the transverse axes while the instrument's symmetric axis contains angular rate information. The multifunction capability of each component will permit low cost, redundant systems in the 1 nmi/hr class. Three multisensors can instrument a six function platform with three redundant channels. The testing of a previously constructed feasibility multisensor is described. The test results are combined with analyses and design studies to project the performance of a ten size (nominal one inch diameter) instrument. The feasibility instrument was constructed by modifying existing 18-size singel- degree-of-freedom gyro hardware. Feasibility testing has demonstrated the basic potential of the multisensor concept for avionics, tactical guidance, and navigation applications. Although not optimized as a multisensor, the feasibility device performed, as follows, in a two position, one hundred hour stability test. (1) Gyro Bias stability of 0.1 meru (0.0015 deg/hr) and acceleration sensitive drift of 0.3 meru/g (0.0045 deg/hr/g). (2) Accelerometer Bias stability of 50 micrometer g and scale factor stability of 75 ppm. The dynamic and thermal characteristics of the feasibility instrument are well understood.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1977
- Accession Number
- ADA042844
Entities
People
- M. Weinberg
- Robert Lawson
Organizations
- Charles Stark Draper Laboratory