Shape-constrained Input Estimation for Efficient Multi-shaker Vibration Testing

Schultz, Ryan; Avitabile, Peter

doi:10.1007/s40799-020-00361-0

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…An example usage of this BARC random vibration data is simulating or designing a multi-shaker lab vibration test. In these experiments, multiple shakers are controlled to best match the response of a lab system to a target or control response of a field system [3,4,7]. The FRFs of the lab system, shown in Fig.…”

Section: Example Usage: Simulated Multi-shaker Lab Vibration Testmentioning

confidence: 99%

“…configuration to perform input estimation MIMO control calculations and compare responses of a simulated lab test to the original, field responses [3,4]. Multiple input DOF are provided on the fixture in the lab configuration, allowing for this data to be used to explore input (shaker) selection methods, in addition to explorations into the other aspects of a MIMO vibration test.…”

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confidence: 99%

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A Proposed Standard Random Vibration Environment for BARC and the Boundary Condition Challenge

Schultz

Schoenherr

Owens

2021

Sensors and Instrumentation, Aircraft/Aerospace, Energy Harvesting &Amp; Dynamic Environments Testing, Volume 7

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In recent years, the Boundary Condition Challenge has gained acceptance in the structural dynamics community. In this challenge problem, an example dynamic system known as the Box and Removable Component, or BARC, is subjected to a single point shock load. The BARC consists of a Removable Component mounted to a box-shaped fixture. The challenge problem specifies a shock load applied to the Box fixture. Here, an additional environment for the challenge problem is proposed. This new environment will be stationary random vibration due to multiple exciters on the Box fixture. In this work, the response of the BARC to this environment will be explored with mod/sim. The goal is to provide the structural dynamics community with all the pieces necessary to examine the various facets of the challenge problem in the context of random vibration and enable researchers to more easily explore problems in random vibration. A data set including input and output degrees of freedom, model modes, model frequency response functions, and input and output time histories and power spectral densities will be created and placed on the challenge problem shared site for others to download and use.

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Section: Example Usage: Simulated Multi-shaker Lab Vibration Testmentioning

confidence: 99%

mentioning

confidence: 99%

A Proposed Standard Random Vibration Environment for BARC and the Boundary Condition Challenge

Schultz

Schoenherr

Owens

2021

Sensors and Instrumentation, Aircraft/Aerospace, Energy Harvesting &Amp; Dynamic Environments Testing, Volume 7

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“…9,10 Subsequently, many scholars have done a lot of works 11,12 based on the Smallwood method. Up to now, there has been a lot of researches on the MIMO vibration tests with the type of random vibration, [13][14][15][16] because most vibration environments of aircraft or vehicles can be simplified to random vibration. However, some of the vibration environments of the product may be very complex in certain circumstances and cannot be described only by random signals.…”

Section: Introductionmentioning

confidence: 99%

Investigation of multi-input multi-output sine on random mixed vibration control

Ma,

Chen,

Zheng

2024

Proceedings of the Institution of Mechanical Engineers, Part C:

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This article investigates Multi-Input Multi-Output (MIMO) mixed vibration control testing for Sinusoid on Random (SoR). The challenge of this vibration test is the mixed signal separation. The response signals at the control channels are composed of the broadband random component and the sinusoidal components. Firstly, the extracted accuracy of the Improved Correlation Integral Method (ICIM) is analyzed. The influences of the parameters used in ICIM are discussed in detail. Secondly, a new method, named Variance Minimum Method (VMM), is proposed for signal separation. Extraction accuracies of the ICIM and the proposed VMM are compared under different parameters. Finally, the control methods are proposed to iteratively update the driving signals of each component in the light of the deviations between the response signals and specified references. A cantilever beam example and biaxial vibration experiment manifest that the VMM and control method can be applied for the multi-shaker SoR vibration control tests.

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Demonstration of Output Weighting in MIMO Control

Schultz

2023

Conference Proceedings of the Society for Experimental Mechanics Series

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Shape-constrained Input Estimation for Efficient Multi-shaker Vibration Testing

Cited by 3 publications

References 14 publications

A Proposed Standard Random Vibration Environment for BARC and the Boundary Condition Challenge

A Proposed Standard Random Vibration Environment for BARC and the Boundary Condition Challenge

Investigation of multi-input multi-output sine on random mixed vibration control

Demonstration of Output Weighting in MIMO Control

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