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

fYear

2006

fDate

14-16 June 2006

Firstpage

3765

Lastpage

3770

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;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2006

Conference_Location

Minneapolis, MN

Print_ISBN

1-4244-0209-3

Electronic_ISBN

1-4244-0210-7

Type

conf

DOI

10.1109/ACC.2006.1657304

Filename

1657304