Form 9.B Project Summary



Proposal Number:


Project Title:

An Onboard FDIR System for

Autonomous Spacecraft

Technical Abstract (Limit 200 words)

The goal of this work is to develop a real-time

diagnostic system that can meet the long-range

autonomy requirements of NASA spacecraft. In an

earlier effort with NASA-Ames and Boeing-North

American, we had developed and demonstrated

TEAMS-RT, a software tool for the diagnosis of

multiple faults in a system with up to 1000 sensors

and 1000 failure aspects in about 0.1 second. The

proposed effort will enhance TEAMS-RT by: (i)

developing an inference engine for real-time

monitoring in the presence of imperfect tests and

temporary failures; and (ii) adding the capability to

perform additional drill-down tests, results of which

will enable quick and accurate fault isolation. In

Phase II, we will add modules for prognostics,

feature extraction, sensor validation, and

reconfiguration to the core TEAMS-RT product.

The resultant diagnostic system will be efficient,

responsive and accurate, facilitating prompt

reconfigurations in the event of failures. The

proposed onboard diagnosis and prognosis solution

will reduce troubleshooting time in the ground

station, facilitate condition-based maintenance, and

reduce the likelihood of loss of mission due to

sudden failures. The resulting solution will be

integrated with the software monitoring and

troubleshooting solution, being proposed separately

(topic 24.03), to provide a comprehensive solution

for onboard Fault Detection, Isolation and

Reconfiguration (FDIR).

Potential Commercial Applications (Limit 200 words)

The proposed technology can be applied to several

applications that require automated monitoring and

diagnosis, including

1. Quality control and real-time monitoring of

manufacturing processes

2. Automotive diagnosis

3. Commercial aircraft diagnosis and prognosis

4. Patient health monitoring in Emergency Rooms

and Intensive Care Units

5. Monitoring of hardware and software systems in

safety critical systems, such as the various Wind

Tunnel systems at NASA.

6. Performance monitoring of computer

communication networks.

Name and Address of Principal Investigator (Name,

Organization Name, Mail Address, City/State/Zip)

Dr. Somnath Deb

Qualtech Systems, Inc.

66 Davis Road

Storrs , CT 06268

Name and Address of Offeror (Firm Name, Mail Address,


Dr. Krishna R. Pattipati

Qualtech Systems, Inc.

66 Davis Road

Storrs , CT 06268