NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Fault Detection and Isolation for Hydraulic ControlPressure sensors and isolation valves act to shut down defective servochannel. Redundant hydraulic system indirectly senses failure in any of its electrical control channels and mechanically isolates hydraulic channel controlled by faulty electrical channel so flat it cannot participate in operating system. With failure-detection and isolation technique, system can sustains two failed channels and still functions at full performance levels. Scheme useful on aircraft or other systems with hydraulic servovalves where failure cannot be tolerated.
Document ID
19870000291
Document Type
Other - NASA Tech Brief
Date Acquired
August 13, 2013
Publication Date
June 1, 1987
Publication Information
Publication: NASA Tech Briefs
Volume: 11
Issue: 6
ISSN: 0145-319X
Subject Category
MACHINERY
Report/Patent Number
MSC-20760
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.