This project implements functional fault models (FFM) to automate the isolation of failures during ground systems operations. FFMs will also be used to recommend sensor placement to improve fault isolation capabilities. The project enables the delivery of system health advisories to ground system operators

Perotti, Jose M.

NASA Technical Reports Server

Active	Project	(2011	-	2016)
Advanced	Ground	Systems	Maintenance	Functional
Fault	Models	For	Fault	Isolation	Project
Human	Exploration	And	Operations	Mission	Directorate	(HEOMD)
At	Start:	7 Current:	7 At	End:	9
1 2 3 4 5 6 7 8 9
Applied	Research Development Demo	&	Test
Engineer	Building	FFM	Model
Project	Technology	Maturity
ABSTRACT
This	project	implements	functional	fault	models	(FFM)	to	automate	the	isolation	of
failures	during	ground	systems	operations.	FFMs	will	also	be	used	to	recommend
sensor	placement	to	improve	fault	isolation	capabilities.	The	project	enables	the
delivery	of	system	health	advisories	to	ground	system	operators.
Technology	Area: Ground	&	Launch	Systems	Processing	TA13
(Primary)	
Robotics,	Tele-Robotics	&	Autonomous	Systems
TA04	(Secondary)
ANTICIPATED	BENEFITS
To	NASA	funded	missions:
Automates	the	identification	of	failed	systems	components	during	system	operation	and	can	also	be	used	as	an	engineering	analysis
tool	during	the	design	phase.		Provides	the	capability	to	conduct	subsystem	assessment	of	known,	undetectable	system	failure
modes.		Provides	capability	to
...
Read	more	on	the	last	page.
For	more	information	visit	techport.nasa.gov
Some	NASA	technology	projects	are	smaller	(for	example	SBIR/STTR,	NIAC,	and
Center	Innovation	Fund),	and	will	have	less	content	than	other,	larger	projects.	Newly-
created	projects	may	not	yet	have	their	content	in	TechPort.
Printed	8/19/2014 1
https://ntrs.nasa.gov/search.jsp?R=20150015508 2019-08-31T06:41:50+00:00Z
Advanced	Ground	Systems	Maintenance	Functional	Fault	Models	For	Fault	Isolation	Project
Other	Organizations
Performing	Work
Abacus	/	IMCS		(Baltimore,	MD)
N&R	Engineering		(Parma
Heights,	OH)
QinetiQ	North	America	
(read	more	on	the	last	page)
DETAILED	DESCRIPTION
The	objective	of	this	project	is	to	automate	the	isolation/allocation	of	systems'	faults	to	a	component
or	series	of	components	once	the	fault	in	the	system	has	been	detected.	The	Fault	Isolation	(FI)
capability	effort	will	develop	and	implement	functional	fault	models	for	specific	Ground	Subsystems
to	automate	the	detection	and	isolation	of	faults.	The	capability	will	receive	data	from	the	system's
Command	&	Control	and	perform	FI	analysis	returning	the	results	(identified	source	of	fault)	to	the
system	operator.		It	will	also	identify	how	the	fault	propagates	across	the	overall	system,	allowing
for	a	faster	resolution	of	the	problem.
MANAGEMENT
Program	Executive:
Michael	Bolger
Program	Manager:
Kirk	Lougheed
Project	Manager:
Barbara	Brown
Principal	Investigator:
Barbara	Brown
For	more	information	visit	techport.nasa.gov
Some	NASA	technology	projects	are	smaller	(for	example	SBIR/STTR,	NIAC,	and
Center	Innovation	Fund),	and	will	have	less	content	than	other,	larger	projects.	Newly-
created	projects	may	not	yet	have	their	content	in	TechPort.
Printed	8/19/2014 2
U.S.	states	with	work
Lead	center:	Kennedy	Space	Center
Advanced	Ground	Systems	Maintenance	Functional	Fault	Models	For	Fault	Isolation	Project
TECHNOLOGY	DETAILS
At	Start:	7 Current:	7 At	End:	9
1 2 3 4 5 6 7 8 9
Applied
Research
Development Demo	&	Test
Advanced	Ground
Systems	Maintenance
Functional	Fault	Models
for	Fault	Isolation
Technology	Maturity
TECHNOLOGY	DESCRIPTION
The	TEAMS	tool	suite	is	a	commercial	product	developed	by	Qualtech	Systems
Incorporated.	TEAMS-Designer	is	used	to	create	functional	fault	models	from	Failure	Mode	and
Effects	Analysis	reports,	fault	trees,	schematics,	instrumentation	lists,	operational	use	cases,	and
other	technical	documentation.	The	FFM	captures	a	system’s	structure,	interconnections,	tests,
procedures,	and	failure	modes	and		the	relationships	between	various	failure	modes	and	system
instrumentation.		TEAMS-Remote	Diagnostic	Server	(RDS)	and	TEAMS-RT	are	used	to	monitor
the	system's	operation	and	perform	real-time	fault	isolation,	when	needed.		
	
This	technology	is	categorized	as	a	software	macro	for	engineering,	design,	modeling,	or	analysis
Technology	Area
TA13	Ground	&	Launch	Systems	Processing	(Primary)
TA04	Robotics,	Tele-Robotics	&	Autonomous	Systems	(Secondary)
TA06	Human	Health,	Life	Support	&	Habitation	Systems	(Additional)
CAPABILITIES	PROVIDED
Automates	the	identification	of	failed	systems	components	within	the	system	being	monitored.	
Provides	the	capability	to	conduct	subsystem	assessment	of	known,	undetectable	system	failure
modes.		Provides	capability	to	assess	the	system	design	and	identify	the	optimal	placement	of
sensors	to	optimize	the	ability	to	detect	known	fault	modes.		Optimizes	troubleshooting	actions.
POTENTIAL	APPLICATIONS
The	primary	application	of	this	capability	will	be	to	aid	the	system	operator	quickly	identify	and
isolate	the	source	of	faults	in	their	systems	in	an	automated	way.		This	capability	will	expedite	the
resolution	of	problems	that	could	jeopardize	the	intended	mission.		Specifically,	the	project	is
developing	and	implementing	an	application	for	the	ground	cryogenics	loading	system	in	the
launch	site.		Other	ground	systems	can
...
Read	more	on	the	last	page.
For	more	information	visit	techport.nasa.gov
Some	NASA	technology	projects	are	smaller	(for	example	SBIR/STTR,	NIAC,	and
Center	Innovation	Fund),	and	will	have	less	content	than	other,	larger	projects.	Newly-
created	projects	may	not	yet	have	their	content	in	TechPort.
Printed	8/19/2014 3
Functional	Fault	Models	for	Fault	Isolation
Advanced	Ground	Systems	Maintenance	Functional	Fault	Models	For	Fault	Isolation	Project
IMAGE	GALLERY
For	more	information	visit	techport.nasa.gov
Some	NASA	technology	projects	are	smaller	(for	example	SBIR/STTR,	NIAC,	and
Center	Innovation	Fund),	and	will	have	less	content	than	other,	larger	projects.	Newly-
created	projects	may	not	yet	have	their	content	in	TechPort.
Printed	8/19/2014 4
Advanced	Ground	Systems	Maintenance	Functional	Fault	Models	For	Fault	Isolation	Project
PROJECT	LIBRARY
Images
Engineer	Building	FFM	Model
(https://techport.nasa.gov/fetchFile?objectId=2086)
Functional	Fault	Models	for	Fault	Isolation
(https://techport.nasa.gov/fetchFile?objectId=1958)
For	more	information	visit	techport.nasa.gov
Some	NASA	technology	projects	are	smaller	(for	example	SBIR/STTR,	NIAC,	and
Center	Innovation	Fund),	and	will	have	less	content	than	other,	larger	projects.	Newly-
created	projects	may	not	yet	have	their	content	in	TechPort.
Printed	8/19/2014 5
Advanced	Ground	Systems	Maintenance	Functional	Fault	Models	For	Fault	Isolation	Project
ANTICIPATED	BENEFITS
To	NASA	funded	missions:	(CONT'D)
assess	the	system	design	and	identify	the	optimal	placement	of	sensors	to	optimize	the	ability	to	detect	known	fault
modes.		Optimizes	troubleshooting	actions.		Performs	time-to-criticality	analyses	and	supports	planning	of	skills/time
for	repair	of	a	given	failure	mode.		Supports	requirements	to	train	personnel	on	system	function	in	nominal	and	off-
nominal	operation.
	
	
To	the	commercial	space	industry:
Reduces	trouble-shooting	time	during	system	operation	and	can	also	be	used	as	an	engineering	analysis	tool
during	the	design	phase.	Provides	the	capability	to	conduct	subsystem	assessment	of	known,	undetectable	system
failure	modes.	Provides	capability	to	assess	the	system	design	and	identify	the	optimal	placement	of	sensors	to
optimize	the	ability	to	detect	known	fault	modes.	Optimizes	troubleshooting	actions.	Performs	time-to-criticality
analyses	and	supports	planning	of	skills/time	for	repair	of	a	given	failure	mode.	Supports	requirements	to	train
personnel	on	system	function	in	nominal	and	off-nominal	operation.
TECHNOLOGY	DETAILS
POTENTIAL	APPLICATIONS	(CONT'D)
also	benefit	from	this	capability.
Another	application	for	this	capability	will	be	the	training	of	ground	operations	personnel	in	their	assigned	systems,	
to	increase	their	awareness	of	potential	faults,	how	these	faults	propagate	and	what	are	the	indications	they
produce.		FFM	can	also	be	used	during	design	for	selecting	optimal	sensors	placement	and	assess	sensor
coverage	of	the	system.		Finally,	it	can	aid	Safety	and	Mission	Assurance	personnel	during	the	generation	of	Failure
Modes	and	Effects	Analysis	(FMEA)	for	these	systems.
OTHER	ORGANIZATIONS	PERFORMING	WORK	(CONT'D)
Sierra	Lobo,	Inc.
For	more	information	visit	techport.nasa.gov
Some	NASA	technology	projects	are	smaller	(for	example	SBIR/STTR,	NIAC,	and
Center	Innovation	Fund),	and	will	have	less	content	than	other,	larger	projects.	Newly-
created	projects	may	not	yet	have	their	content	in	TechPort.
Printed	8/19/2014 6


Advanced Ground Systems Maintenance Functional Fault Models For Fault Isolation Project

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