Seismometer Compensation for Acceleration Measurements,
Abstract
The acceleration responses of two Hall-Sears 10 short period seismometers have been modified so that a flat output signal to input acceleration results between 0.1 Hz and 10 Hz. These instruments are to be used to actively control the pneumatically-supported isolation platform in the USAF Academy's Guidance and Control Laboratory. Descriptions of the notch filter compensation circuit and the transfer function measurement technique are given. The results obtained show that it is possible to keep the seismometer's acceleration response flat to plus or minus 2 db between 0.2 and 10 Hz by the appropriate selection of seismometer damping resistor and compensation circuit values. A simple gain adjustment procedure was used to match the compensated seismometer output magnitudes. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1972
- Accession Number
- AD0748245
Entities
People
- Dino A. Lorenzini
- Jack P. Schunk
Organizations
- Air Force Research Laboratory