Control of self-adjoint distributed-parameter systems

Meirovitch, L.; Baruh, H.

doi:10.2514/6.1980-1707

Cited by 96 publications

(93 citation statements)

References 4 publications

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“…The modal filter is a tool to extract the modal coordinates of each individual mode from the system outputs by mapping the response vector from the physical space to the modal space (Zhang et al 1990). It was first introduced by Baruh and Meirovitch (1982) to overcome the spill-over problem within the control of the distributed parameter systems. Spill-over is a phenomenon in which the energy addressed to the controlled mode is pumped into the uncontrolled modes.…”

Section: Damage Detection and Localization With The Use Of Modal Filtmentioning

confidence: 99%

Damage Localization and Monitoring of Load Changes in Truss Structures

Mendrok

2014

mech

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In recent years one can observe an increasing interest of the researchers, both from academia and industry, in the development of systems for the monitoring of health structures.. The main fields of application for these systems are rotating machinery, aircrafts and other means of group transport and civil engineering structures. Many of the latter, contain truss elements in its structure. That is why detection and possible localization of the fault in such a structures is crucial for the safety of its operation. In this paper the application of modal filtration to damage detection and localization in the truss structures is presented. The results of numerical simulation an laboratory experiment are shown.Keywords: damage detection, damage localization, truss structures, modal filter LOKALIZACJA USZKODZEŃ I MONITOROWANIE ZMIAN OBCIĄŻENIA W STRUKTURACH KRATOWNICOWYCH Ostatnio można zaobserwować wzrastające zainteresowanie badaczy zarówno ześrodowisk akademickich, jak i z przemysłu, rozwojem układów monitorowania stanu obiektów. Główne pola zastosowania tych układów to maszyny wirnikowe, lotnictwo i inneśrodki transportu zbiorowego oraz konstrukcje inżynierii lądowej. W artykule pokazano zastosowanie filtracji modalnej do wykrywania i lokalizowania uszkodzeń w konstrukcjach kratownicowych. Przedstawiono wyniki badań symulacyjnych oraz pomiarów laboratoryjnych.Słowa kluczowe: wykrywanie uszkodzeń, lokalizacja uszkodzeń, konstrukcje kratownicowe, filtr modalny

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Section: Damage Detection and Localization With The Use Of Modal Filtmentioning

confidence: 99%

Damage Localization and Monitoring of Load Changes in Truss Structures

Mendrok

2014

mech

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“…The approaches to resolving the problem are nearly as numerous as the investigators who have addressed it [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. But as yet, a general procedure to determine the placement of actuators and corresponding command forces for each actuator has not been developed.…”

Section: Introductionmentioning

confidence: 99%

“…The optimal solution will be obtained after the model is simulated under different combinations of B. To avoid solving a 2nx2n Riccati equation, Baruh and Meirovitich [25,26] found that by use of a design technique known as Independent…”

Section: Introductionmentioning

confidence: 99%

Controlling a large flexible structure to mimic a rigid one

Lin¹

1992

33rd Structures, Structural Dynamics and Materials Conference

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“…This is achieved by mapping the response vector from the physical space-the network of measurement points to the modal space. It was first introduced by Baruh and Meirovitch in 1982 [14] with the aim of overcoming the spillover problem encountered while controlling distributed parameter systems. They used representation of the modal filter for the distributed parameter system, which had a following drawbacks: necessity to know the function of the spatial distribution of mass (which is possible only for simple geometries) and the vibration response measurement performed at each point of the object.…”

Section: Introductionmentioning

confidence: 99%

Operational modal filter and its applications

Mendrok

Kurowski

2012

Arch Appl Mech

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In the paper, the procedure for the estimation of modal filter coefficients from output-only data is presented. The basic concept of the procedure consists in frequency response functions synthesis based on the knowledge of an operational modal model. A method of operational mode shapes scaling is described. The method is then compared with the classical modal filter and with modal filtration of responses spectra, which is sometimes used as a solution for modal filtration based on the output-only data. Each solution is applied to load identification and damage detection. The study shows the method verification on data obtained from laboratory experiment.

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Control of self-adjoint distributed-parameter systems

Cited by 96 publications

References 4 publications

Damage Localization and Monitoring of Load Changes in Truss Structures

Damage Localization and Monitoring of Load Changes in Truss Structures

Controlling a large flexible structure to mimic a rigid one

Operational modal filter and its applications

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