Inertial Actuator with Virtual Mass for Active Vibration Control

Mao, Qibo; Li, Shenquan; Huang, Shizuo

doi:10.20855/ijav.2020.25.31681

Cited by 7 publications

(4 citation statements)

References 24 publications

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“…When the sensor senses structural vibrations, it generates the corresponding induced electricity. According to [46], the induced charge generated by piezoelectric ceramic sensors can be described by Equation (8) as follows:…”

Section: Control Performance Of Lbia With Integrated Piezoelectric Se...mentioning

confidence: 99%

“…However, one drawback of DVAs is their limited effectiveness in attenuating vibrations at multiple resonance frequencies. Significant advancements have been achieved by implementing inertial actuators (or proof mass actuators) [6,7], resulting in improved reduction of vibrations across multiple resonance frequencies [8]. These actuators exhibit enhanced adaptability to changes in controlled structural parameters, making them suitable for a wide range of operating conditions including low-frequency scenarios where precise vibration control is required.…”

Section: Introductionmentioning

confidence: 99%

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Active Vibration Control Using Loudspeaker-Based Inertial Actuator with Integrated Piezoelectric Sensor

Chen,

Mao,

Peng

et al. 2023

Actuators

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With the evolution of the aerospace industry, structures have become larger and more complex. These structures exhibit significant characteristics such as extensive flexibility, low natural frequencies, numerous modes, and minimal structural damping. Without implementing vibration control measures, the risk of premature structural fatigue failure becomes imminent. In present times, the installation of inertial actuators and control signal acquisition units typically requires independent setups, which can be cumbersome for practical engineering purposes. To address this issue, this study introduces a novel approach: an independent control unit combining a loudspeaker-based inertial actuator (LBIA) with an integrated piezoelectric ceramic sensor. This unit enables autonomous vibration control, offering the advantages of ease of use, low cost, and lightweight construction. Experimental verification was performed to assess the mechanical properties of the LBIA. Additionally, a mathematical model for the LBIA with an integrated piezoelectric ceramic sensor was developed, and its efficacy as a control unit for thin plate structure vibration control was experimentally validated, showing close agreement with numerical results. Furthermore, the LBIA’s benefits as an actuator for low-frequency mode control were verified through experiments using external sensors. To further enhance control effectiveness, a mathematical model of the strain differential feedback controller based on multi-bandpass filtering velocity improvement was established and validated through experiments on the clamp–clamp thin plate structure. The experimental results demonstrate that the designed LBIA effectively reduces vibration in low-frequency bands, achieving vibration energy suppression of up to 12.3 dB and 23.6 dB for the first and second modes, respectively. Moreover, the LBIA completely suppresses the vibration of the fourth mode. Additionally, the improved control algorithm, employing bandpass filtering, enhances the effectiveness of the LBIA-integrated sensor, enabling accurate multimodal damping control of the structure’s vibrations for specified modes.

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Section: Control Performance Of Lbia With Integrated Piezoelectric Se...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Active Vibration Control Using Loudspeaker-Based Inertial Actuator with Integrated Piezoelectric Sensor

Chen,

Mao,

Peng

et al. 2023

Actuators

Self Cite

View full text Add to dashboard Cite

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“…Nonetheless, when the dynamics of the system are considered, the unconditional stability assumption no longer holds and a limit to the control gain exists. Several techniques have been proposed to increase the stability margin of VF including: the Acceleration Feedback Control (Diaz and Reynolds, 2010), the Inner Control Loop Approach (Díaz et al, 2012a), the Integral Resonant Control (Díaz et al, 2012b), the Virtual Mass Technique (Mao et al, 2020), the adaptive reduction of VF gain (Ahmadi, 2020), or the Independent Modal Space Phase-Lead VF Control (Xue et al, 2022). The SISO VF schemes may perform poorly when the target structure exhibits closely-spaced modes.…”

Section: Introductionmentioning

confidence: 99%

Active control of human-induced vibrations on lightweight structures via electrodynamic actuator dynamics inversion

Ramírez-Senent

Gallegos-Calderón

García‐Palacios

et al. 2022

Journal of Vibration and Control

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The active vibration absorber represents an effective means to mitigate excessive vibrations in low-damping structures. Nevertheless, the dynamics of the actuators employed in such systems may negatively affect their performance and stability restricting their operational frequency range. This article presents an application of dynamics inversion techniques to the force control of electrodynamic proof-mass actuators employed as active vibration absorbers in lightweight pedestrian structures. The dynamics inversion approach is applied to enhance the classical direct velocity feedback scheme. Additionally, a novel method relying on dynamics inversion is presented: the Broadband Force Cancellation Algorithm. This procedure consists in estimating, in real-time, the equivalent force acting on the system to later apply it back to the structure with the opposed sign. The effectiveness of the proposed methods is assessed via numerical simulations carried over a realistic model of an existing lightweight footbridge and an electrodynamic proof-mass actuator. Two load cases are analyzed: a fixed swept-sine force and a walking load. Both cases account for the actuator-structure interaction. The human-structure interaction is considered in the latter scenario due to its importance when dealing with lightweight pedestrian structures. Simulation results demonstrate that the dynamics inversion techniques effectively cancel out actuator dynamics leading to an excellent tracking of the reference force output by the suggested or other vibration control algorithm. The proposed schemes are proved promising since they substantially outperform the widespread direct velocity feedback approach. In particular, the Broadband Force Cancellation Algorithm minimizes the action of the external forces within their estimation frequency range, thus being especially suited to tackle broadband excitations, important in lively pedestrian structures, whereas the velocity feedback methodology performs best at the structural resonant frequencies.

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“…In this case, the root locus of the closed-loop system shows a couple of branches which enter the right-half plane from a certain value of the control gain on. Several approaches have been proposed to increase the stability margin of AVA systems, such as: Modified Acceleration Feedback (Díaz and Reynolds, 2009), the Internal Resonant Control (Díaz et al, 2012b), the Inner Control Loop approach (Díaz et al, 2012a), or the Virtual Mass technique (Mao et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Interaction Phenomena to Be Accounted for Human-Induced Vibration Control of Lightweight Structures

Díaz

Gallegos

Senent

et al. 2021

Front. Built Environ.

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Inertial mass controllers, including passive, semi-active and active strategies, have been extensively used for canceling human-induced vibrations in lightweight pedestrian structures. Codes to check the vibration serviceability and current controller design approaches assume that both excitation forces and controller forces are the same on a flexible structure and on a rigid structure. However, this fact may not be assumable since interaction phenomena arise even for moderately lightweight structures. Analyzing two case studies in this paper, interaction phenomena involved in the frequency-domain-based design of passive and active inertial mass dampers are discussed. Thus, a general vibration control problem including the interaction phenomena is set hereby. Concretely, this paper deeply discusses the following issues: (i) how the structure to be controlled is affected when human-structure interaction is presented for deterministic and stochastic conditions, (ii) the closed-loop transfer function of the controlled structure including a passive inertial mass damper, and (iii) the closed-loop transfer function of the controlled structure including an active inertial mass damper. In addition, the performed analysis considers the actuator dynamics and the actuator-structure interaction.

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Inertial Actuator with Virtual Mass for Active Vibration Control

Cited by 7 publications

References 24 publications

Active Vibration Control Using Loudspeaker-Based Inertial Actuator with Integrated Piezoelectric Sensor

Active Vibration Control Using Loudspeaker-Based Inertial Actuator with Integrated Piezoelectric Sensor

Active control of human-induced vibrations on lightweight structures via electrodynamic actuator dynamics inversion

Interaction Phenomena to Be Accounted for Human-Induced Vibration Control of Lightweight Structures

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