Accession Number:

AD0750869

Title:

Active Control of a Pneumatic Isolation System,

Descriptive Note:

Corporate Author:

FRANK J SEILER RESEARCH LAB UNITED STATES AIR FORCE ACADEMY COLO

Personal Author(s):

Report Date:

1972-08-01

Pagination or Media Count:

10.0

Abstract:

A pneumatically isolated test platform has been modified to provide active control to the local gravity vector. A combination of sensors, including tiltmeters, angular accelerometers, seismometers, and a gyrocompass measure total platform motion between 0 and 100 Hz. Electrical-to-pressure transducers control the air pressure in the supporting cylinders for low-frequency stabilization. Small electromagnetic shakers provide the necessary mid-frequency control forces. The pneumatic supports themselves provide excellent passive isolation against higher frequency disturbances. This active platform control scheme will be used to investigate the effects of seismic level disturbances on the evaluation of precision inertial components. Author

Subject Categories:

  • Hydraulic and Pneumatic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE