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A HYBRID ANALYTICAL/INTELLIGENT APPROACH TO FAULT-TOLERANT CONTROL OF LARGE…

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
17038
Program Year/Program:
1991 / SBIR
Agency Tracking Number:
17038
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Automation Concepts & Sys Inc
2600 Collins Springs Dr Smyrna, GA 30080
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1991
Title: A HYBRID ANALYTICAL/INTELLIGENT APPROACH TO FAULT-TOLERANT CONTROL OF LARGE SPACE STRUCTURES
Agency: NASA
Contract: N/A
Award Amount: $49,995.00
 

Abstract:

THIS PROJECT COMBINES HYBRID CONTROL-THEORETIC TECHNIQUES AND ARTIFICIAL INTELLIGENCE (AL) FOR THE DESIGN OF FAULT-TOLERANT CONTROL STRATEGIES FOR LARGE SPACE STRUCTURES. AVAILABLE AL-BASED OR PURELY CONTROL-THEORETIC TECHNIQUES FOR FAULT-TOLERANT CONTROL OFFER NO UNIFIED METHODOLOGY TO INTEGRATE THE DIVERSE ISSUES OF SYSTEM MODELING, FAULT DETECTION AND ISOLATION, FAULT PROPAGATION, SYSTEM RESTRUCTURING, AND CONTROLLER RECONFIGURATION. THIS PROJECT CAPITALIZES ON STRUCTURAL FEATURES OF THE SYSTEM. THE FAULT-TOLERANT DESIGN PROCEDURE COMBINES SIGNAL REDUNDANCY AND FUZZY LOGIC. WHEN A FAULT IS DETECTED, CAUSAL OR QUALITATIVE REASONING IS USED TO MODEL ITS PROPAGATION TO ADJACENT SUBSYSTEMS. THE SYSTEM IS THEN RESTRUCTURED BY ISOLATING FAULTY COMPONENTS. FINALLY, A STRUCTURAL CONTROL LAW THAT RECONFIGURES THE ORIGINAL SYSTEM CONTROLLER TO MEET THE PRIMARY OBJECTIVE OF GUARANTEED STABILITY WHILE THE SYSTEM IS OPERATING IN A DEGRADED MODE. ALGORITHMIC DEVELOPMENTS WILL BE DEMONSTRATED, USING THE THERMAL CONTROL SYSTEM OF THE SPACE STATION'S COMMON MODULE AS THE TEST BED. THIS PROJECT COMBINES HYBRID CONTROL-THEORETIC TECHNIQUES AND ARTIFICIAL INTELLIGENCE (AL) FOR THE DESIGN OF FAULT-TOLERANT CONTROL STRATEGIES FOR LARGE SPACE STRUCTURES. AVAILABLE AL-BASED OR PURELY CONTROL-THEORETIC TECHNIQUES FOR FAULT-TOLERANT CONTROL OFFER NO UNIFIED METHODOLOGY TO INTEGRATE THE DIVERSE ISSUES OF SYSTEM MODELING, FAULT DETECTION AND ISOLATION, FAULT PROPAGATION, SYSTEM RESTRUCTURING, AND CONTROLLER RECONFIGURATION. THIS PROJECT CAPITALIZES ON STRUCTURAL FEATURES OF THE SYSTEM. THE FAULT-TOLERANT DESIGN PROCEDURE COMBINES SIGNAL REDUNDANCY AND FUZZY LOGIC. WHEN A FAULT IS DETECTED, CAUSAL OR QUALITATIVE REASONING IS USED TO MODEL ITS PROPAGATION TO ADJACENT SUBSYSTEMS. THE SYSTEM IS THEN RESTRUCTURED BY ISOLATING FAULTY COMPONENTS. FINALLY, A STRUCTURAL CONTROL LAW THAT RECONFIGURES THE ORIGINAL SYSTEM CONTROLLER TO MEET THE PRIMARY OBJECTIVE OF GUARANTEED STABILITY WHILE THE SYSTEM IS OPERATING IN A DEGRADED MODE. ALGORITHMIC DEVELOPMENTS WILL BE DEMONSTRATED, USING THE THERMAL CONTROL SYSTEM OF THE SPACE STATION'S COMMON MODULE AS THE TEST BED.

Principal Investigator:


0

Business Contact:

Small Business Information at Submission:

Automation Concepts & Sys Inc
2600 Collins Springs Dr Smyrna, GA 30080

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No