Title :
Life Extending Control of Mechanical Systems* using Symbolic Time Series Analysis
Author :
Khatkhate, Amol ; Gupta, Shalabh ; Ray, Asok ; Keller, Eric
Author_Institution :
Dept. of Mech. Eng., Pennsylvania State Univ., University Park, PA
Abstract :
The paper presents real-time life extending control of complex mechanical structures based on the anomaly information generated via symbolic time series analysis. The underlying concept is experimentally validated on a multi-degree of freedom mass-beam structure excited by oscillatory motion of two shakers. The control policy is formulated based on the analysis of stochastic time series data of ultrasonic sensors collected under identical loading conditions. Experimental results demonstrate feasibility of the real-time control strategy for fatigue life extension of polycrystalline alloy structures
Keywords :
fatigue testing; real-time systems; shapes (structures); structural engineering; time series; anomaly detection; fatigue life extension; mechanical systems; polycrystalline alloy structures; real-time life extending control; symbolic time series analysis; ultrasonic sensors; Control systems; Fatigue; Information analysis; Laboratories; Life testing; Mechanical systems; Pattern analysis; Performance analysis; Stochastic processes; Time series analysis;
Conference_Titel :
American Control Conference, 2006
Conference_Location :
Minneapolis, MN
Print_ISBN :
1-4244-0209-3
Electronic_ISBN :
1-4244-0210-7
DOI :
10.1109/ACC.2006.1657304
