Real-time tunable single-degree of freedom, multiple-frequency vibration absorber

Valášek, Michael; Olgaç, Nejat; Neusser, Zdeněk

doi:10.1016/j.ymssp.2019.07.025

Cited by 27 publications

(3 citation statements)

References 16 publications

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“…An interesting study on generalizing the DR towards fractional derivative feedback was recently presented in [29]. Let us also mention the approach of [30] combining position and velocity feedback, the work reported in [31] targeting multiple-frequencies by multi-parameter delayed position feedback and [32], [33] extending the DR concept to twodimensional vibration absorption using delayed position feedback at the three actuators of the 2D absorber. Motivated by DR applications, in [34], stability analysis of systems with delayed position and velocity was performed.…”

Section: Introductionmentioning

confidence: 99%

Robust delayed resonator with acceleration feedback — design by double root assignment and experimental validation

Kuře,

Bušek,

Boussaada

et al. 2024

Journal of Sound and Vibration

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Section: Introductionmentioning

confidence: 99%

Robust delayed resonator with acceleration feedback — design by double root assignment and experimental validation

Kuře,

Bušek,

Boussaada

et al. 2024

Journal of Sound and Vibration

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“…The research group of Olgac further carried out a series of extensions to the classical DR, and designed dual frequency fixed DR(DFFDR), multiplefrequency DR (MFDR) and distributed DR (DDR). [25][26][27] Huan et al investigated a multi-objective optimal design of a TDVA for a stochastically excited linear structure. 28 Mohanty et al studied the nonlinear dynamics of a TDVA using a lead zirconate titanate (PZT) stack actuator and gave a clear idea as to the response amplitude of the system and the operating frequency band to minimize system vibration.…”

Section: Introductionmentioning

confidence: 99%

Active Vibration Control of a Quarter-Car Model via a Time-Delayed Vibration Absorber

Sun

2023

The International Journal of Acoustics and Vibration

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A time-delayed vibration absorber (TDVA) is proposed to suppress the vertical vibration of a quarter-car model. First, the mechanical model of the combined system with a linear TDVA is studied. Second, the vibration suppression effect of the linear TDVA at a fixed excitation frequency is experimentally verified when the passive absorber totally loses efficacy. Third, based on the system acceleration response amplitude derived by the harmonic balance method, the control parameters optimization of the nonlinear TDVA is carried out in a wide frequency band; the numerical simulation of original vibration equations is conducted to determine the stability of the system. It is concluded that the broadband vibration suppression effect of the nonlinear TDVA is obtained with optimal control parameters. The numerical results validate the correctness of the theoretical ones.

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“…With the rapid development and maturity of active control, the research on time-delay control has been carried out comprehensively, and great progress has been achieved in the research of active vibration attenuation control using time delay. Valášek and Olgac et al [ 13 , 14 , 15 , 16 ] first proposed the use of time delay as an active control term for attenuation control, and the use of a delay feedback control based on absorber displacement. It was shown that the absorber can completely eliminate the vibration of the main system under harmonic excitation with the same frequency as the natural frequency of the system.…”

Section: Introductionmentioning

confidence: 99%

Vibration Control of Time-Varying Delay under Complex Excitation

Ren

Chen

et al. 2021

Micromachines

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The existing available research outcomes on vibration attenuation control for time-delay feedback indicate that, for the delay dynamic vibration absorber with fixed time-delay control parameters, under harmonic excitation, a good vibration attenuation control effect occurs on the vibration of the main system. However, the effect is not obvious for complex excitation. Aiming at the above problems, in a short time interval, a harmonic excitation with the same displacement size as the complex excitation was established. Then, by calculating its equivalent amplitude and equivalent frequency, a harmonic equivalent method for complex excitation was proposed in this paper. The time-delay parameters were adjusted according to the equivalent frequency of harmonic equivalent excitation in real time; therefore, a good vibration attenuation control effect was obtained through the delay dynamic vibration absorber in the discrete time interval. In this paper, research on a time-varying delay dynamic vibration absorber was conducted by taking the two-degree-of-freedom vibration system with a delay dynamic vibration absorber as an example. The simulation results show that the proposed control method can reduce the vibration of the main system by about 30% compared with the passive vibration absorber. This can obviously improve the performance of the time-delay dynamic vibration absorber. It provides a new technical idea for the design of vehicle active frame system.

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Real-time tunable single-degree of freedom, multiple-frequency vibration absorber

Cited by 27 publications

References 16 publications

Robust delayed resonator with acceleration feedback — design by double root assignment and experimental validation

Robust delayed resonator with acceleration feedback — design by double root assignment and experimental validation

Active Vibration Control of a Quarter-Car Model via a Time-Delayed Vibration Absorber

Vibration Control of Time-Varying Delay under Complex Excitation

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