Optimisation of dynamic vibration absorbers to minimise kinetic energy and maximise internal power dissipation

Zilletti, Michele; Elliott, Stephen J.; Rustighi, Emiliano

doi:10.1016/j.jsv.2012.04.023

Cited by 108 publications

(62 citation statements)

References 14 publications

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“…Furthermore, the optimal determinations of parameters were investigated for the absorber with nonlinear damping and different loading characteristics in the following literatures [39]. Among the above studies, the absorbers' parameters are constant and time invariant; therefore, the vibration absorber is passive.…”

Section: Introductionmentioning

confidence: 99%

Vibration Control Design for a Plate Structure with Electrorheological ATVA Using Interval Type-2 Fuzzy System

Lin¹,

Lee²,

Liu³

2017

Preprint

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This study presents a vibration control using actively tunable vibration absorbers (ATVA) to suppress vibration of a thin plate. The ATVA's is made of a sandwich hollow structure embedded with the electrorheological fluid (ERF). ERF is considered to be one of the most important smart fluids and it is suitable to be embedded in a smart structure due to its controllable viscosity property.ERF's apparent viscosity can be controlled in response to the electric field and the change is reversible in 10 microseconds. Therefore, the physical properties of the ERF-embedded smart structure, such as the stiffness and damping coefficients, can be changed in response to the applied electric field. A mathematical model is difficult to be obtained to describe the exact characteristics of the ERF embedded ATVA because of the nonlinearity of ERF's viscosity. Therefore, a fuzzy modeling and experimental validations of ERF-based ATVA from stationary random vibrations of thin plates are presented in this study. Because Type-2 fuzzy sets generalize Type-1 fuzzy sets so that more modelling uncertainties can be handled, a semi-active vibration controller is proposed based on Type-2 fuzzy sets. To investigate the different performances by using different types of fuzzy controllers, the experimental measurements employing type-1 fuzzy and interval type-2 fuzzy controllers are implemented by the Compact RIO embedded system. The fuzzy modeling framework and solution methods presented in this work can be used for design, performance analysis, and optimization of ATVA from stationary random vibration of thin plates.

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Section: Introductionmentioning

confidence: 99%

Vibration Control Design for a Plate Structure with Electrorheological ATVA Using Interval Type-2 Fuzzy System

Lin¹,

Lee²,

Liu³

2017

Preprint

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show abstract

“…Because the effective working frequency span of DVAs is narrow only for a certain designed frequency range, Den Hartog et al considered the optimal tuning of the absorber parameters including damping to improve the DVA's design [11]. Furthermore, the optimal determinations of parameters were investigated for the absorber with nonlinear damping and different loading characteristics in the following literatures [12]. Among the above studies, the absorbers' parameters are constant and time invariant; therefore, the vibration absorber is passive.…”

Section: Introductionmentioning

confidence: 99%

Vibration Control Design for a Plate Structure with Electrorheological ATVA Using Interval Type-2 Fuzzy System

Lin¹,

Lee²,

Liu³

2017

Preprint

View full text Add to dashboard Cite

This study presents a vibration control using actively tunable vibration absorbers (ATVA) to suppress vibration of a thin plate. The ATVA's is made of a sandwich hollow structure embedded with the electrorheological fluid (ERF). ERF is considered to be one of the most important smart fluids and it is suitable to be embedded in a smart structure due to its controllable viscosity property. ERF's apparent viscosity can be controlled in response to the electric field and the change is reversible in 10 microseconds. Therefore, the physical properties of the ERF-embedded smart structure, such as the stiffness and damping coefficients, can be changed in response to the applied electric field. A mathematical model is difficult to be obtained to describe the exact characteristics of the ERF embedded ATVA because of the nonlinearity of ERF's viscosity. Therefore, a fuzzy modeling and experimental validations of ERF-based ATVA from stationary random vibrations of thin plates are presented in this study. Because Type-2 fuzzy sets generalize Type-1 fuzzy sets so that more modelling uncertainties can be handled, a semi-active vibration controller is proposed based on Type-2 fuzzy sets. To investigate the different performances by using different types of fuzzy controllers, the experimental measurements employing type-1 fuzzy and interval type-2 fuzzy controllers are implemented by the Compact RIO embedded system. The fuzzy modeling framework and solution methods presented in this work can be used for design, performance analysis, and optimization of ATVA from stationary random vibration of thin plates.

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“…It is placed within a wider on-going research project [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

On the optimization of a hybrid tuned mass damper for impulse loading

Salvi¹,

Rizzi²,

Rustighi³

et al. 2015

Smart Mater. Struct.

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The present paper deals with the optimisation of a hybrid Tuned Mass Damper (TMD) in reducing the transient structural response due to impulse loading. In particular, a unit impulse excitation has been assumed, acting as base displacement, which is a situation that may occur in different real applications. The proposed hybrid Tuned Mass Damper is composed of a previously optimised passive TMD and an added optimised active controller. Such configuration has been conceived in view of reducing both the global and the peak response. Especially on the latter task, the introduction of the active controller brings in a significant contribution. Prior, a Bounded-Input-Bounded-Output (BIBO) stability analysis on the control gains is developed. Different control laws have been investigated, assuming as primary structures, first a single-degree-of-freedom (SDOF) benchmark system and then a multi-degree-of-freedom (MDOF) building, in order to point out the most appropriate control law for the given structural context. In particular, a new control law, based on a linear combination of acceleration and velocity, allowed for remarkable peak response reduction. The achieved dynamic response exhibits a time settling weakly oscillating response, an indication of a stable behaviour, and therefore represents a suitable option for the active controller, in view of various engineering applications.

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Optimisation of dynamic vibration absorbers to minimise kinetic energy and maximise internal power dissipation

Cited by 108 publications

References 14 publications

Vibration Control Design for a Plate Structure with Electrorheological ATVA Using Interval Type-2 Fuzzy System

Vibration Control Design for a Plate Structure with Electrorheological ATVA Using Interval Type-2 Fuzzy System

Vibration Control Design for a Plate Structure with Electrorheological ATVA Using Interval Type-2 Fuzzy System

On the optimization of a hybrid tuned mass damper for impulse loading

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