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S21 Vibrações e Análise Modal |
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Title:
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FAULS DETECTION USING ROBUST STATE OBSERVERS - EXPERIMENTAL RESULTS
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Summary :
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FAULTS DETECTION USING ROBUST STATE OBSERVERS ?EXPERIMENTAL RESULTS
ABSTRACT. THE DEVELOPMENT OF NEW FAULT DETECTION TECHNIQUES IS NECESSARY BECAUSE OF INCREASING DEMANDS FROM INDUSTRIES ON RELIABILITY AND SAFETY IN MECHANICAL SYSTEMS. THEY MUST BE SUPERVISED SUCH THAT OCCURRENCE OF FAILURES CAN BE ACCOMMODATED AS QUICKLY AS POSSIBLE BECAUSE THEY CAN CAUSE AN UNACCEPTABLE DETERIORATION OF THE SYSTEMS PERFORMANCE. IN THIS WORK, WE HAVE DEVELOPED A METHODOLOGY TO DETECT AND ISOLATE FAULTS IN MECHANICAL SYSTEMS USING REDUCED ORDER STATE OBSERVERS. WE CAN MONITOR UNMEASURABLE VARIABLES AND THE METHOD SELECTS THE PARAMETERS FROM COMPONENTS THAT MAY FAIL DURING THE PROCESS AND CONSTRUCTS AN OTIMIZED GLOBAL OBSERVER TO ANALYZE ALL THE SYSTEM CONSIDERING RANDOM NOISES IN THE EXCITATION, IN THE RESPONSE AND SENSOR FAILURE. TO ISOLATE COMPONENT FAILURES VIA ROBUST OBSERVATION, AN AUTOMATIC SYSTEM WITH A SET OF DETECTION OBSERVERS IS CONSTRUCTED, WHERE EACH OBSERVER IS ONLY SENSITIVE TO ONE SPECIFIED COMPONENT FAILURE WHILE BEING ROBUST TO ALL OTHER COMPONENT FAILURES.
KEY WORDS
STATE OBSERVERS, FAULTS, ROBUST OBSERVATION
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Author :
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Melo, Gilberto Pechoto
Pederiva, Robson 0
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Paper View :
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