Active Nonlinear Vibration Absorber Design for Flexible Structures

Chen, Lei; Hansen, Colin H.; He, Fangpo; Sammut, Karl

doi:10.20855/ijav.2007.12.2208

Cited by 5 publications

(3 citation statements)

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“…Vibration energy of a linear master structure is absorbed to suppress undesired oscillations by coupling a time delay to a master mass. To broaden a valid range in frequency for suppression of vibrations, Zhao and Xu [18] proposed a delayed-resonator vibration absorber with nonlinear master and slave structures, and then a linear timedelayed active absorber was realized in relative experiment [19,20]. The slave structure in this study has geometrical nonlinearity, which can expand the frequency range so that vibration energy could be absorbed easily in engineering practice.…”

Section: Introductionmentioning

confidence: 94%

Dynamical Performances of a Vibration Absorber for Continuous Structure considering Time-Delay Coupling

Sun¹,

Song²

2016

Shock and Vibration

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The nonlinear effect incurred by time delay in vibration control is investigated in this study via a vibration absorber coupled with a continuous beam structure. The stability of the vibration absorber coupled structure system with time-delay coupling is firstly studied, which provides a general guideline for the potential time delay to be introduced to the system. Then it is shown that there is a specific region for the time delay which can bring bifurcation modes to the dynamic response of the coupling system, and the vibration energy at low frequencies can be transferred or absorbed due to the bifurcation mode and the vibration in the corresponding frequency range is thus suppressed. The nonlinear mechanism of this vibration suppression incurred by the coupling time delay is discussed in detail, which provides a novel and alternative approach to the analysis, design, and control of vibration absorbers in engineering practice.

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Section: Introductionmentioning

confidence: 94%

Dynamical Performances of a Vibration Absorber for Continuous Structure considering Time-Delay Coupling

Sun¹,

Song²

2016

Shock and Vibration

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“…The majority of existing nonlinear active vibration control techniques focus on steady-state damping performance. In [7], a nonlinear technique called QMPPF was used to damp forced vibrations. In [15], another nonlinear technique called delayed resonant feedback was used, based on the principle The Netherlands S.H.HosseinNiaKani@tudelft.nl of an electrical realization of a delayed vibration absorber, to absorb the steady-state resonant oscillations.…”

Section: Introductionmentioning

confidence: 99%

Resetting Velocity Feedback: Reset Control for Improved Transient Damping

Mohan

Kaczmarek

HosseinNia

2022

2022 European Control Conference (ECC)

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Active vibration control (AVC) is crucial for the structural integrity, precision, and speed of industrial machines. Despite advancements in nonlinear control techniques, most AVC techniques predominantly employ linear feedback control due to their simplicity and ability to be designed in the frequency domain. In this paper, we introduce a reset-based nonlinear bandpass filter that uses velocity feedback to improve transient damping of vibrating structures. The approach is motivated from an energy-based mechanistic analysis, which incentivizes the use of reset. A novel feature of our approach is that it works for non-ideal, naturally damped systems, and enables control design in the frequency domain, inline with industrial practice. We demonstrate the effectiveness of this new filter by numerical simulations and experimental validation on a single degree-of-freedom flexure stage.

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“…Next, the dynamic model used for the class of continuous structures described by the generalised wave equation is introduced. Based on our previous work, the design of a distributed Vibration Clamping Absorber (VCA) [4] and a Distributed Active Shock Absorber (DASA) [5] is then presented. The section of numerical simulation work demonstrates that the VCA is effective for primary resonance control but not effective for free vibration control.…”

Section: Introductionmentioning

confidence: 99%

Distributed Hybrid Vibration Absorbers for Shock and Forced Vibrations

Chen

2012

AMM

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The control methods used for free/shock vibration suppression are normally different from those used for forced vibration cancellation, because shock vibration is regarded as a type of transient vibration that is different in nature from steady-state forced vibration. However, both steady-state and shock excitations may occur in flexible structures, so there is a need to control both types of vibrations. To show the integration of the two different vibration control strategies, a hybrid control system based on adhesive strain gauges and PZT patches is proposed to construct a distributed resonant absorber and shock absorber together. The hybrid system is governed by a control arbitrator that decides which absorber should be active according to the different excitation conditions. The effectiveness of the integrated system is shown through simulation and experimental studies.

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Active Nonlinear Vibration Absorber Design for Flexible Structures

Cited by 5 publications

References 0 publications

Dynamical Performances of a Vibration Absorber for Continuous Structure considering Time-Delay Coupling

Dynamical Performances of a Vibration Absorber for Continuous Structure considering Time-Delay Coupling

Resetting Velocity Feedback: Reset Control for Improved Transient Damping

Distributed Hybrid Vibration Absorbers for Shock and Forced Vibrations

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