Vibration control of a flexible structure using a hybrid mount

Kim, Seunghwan; Choi, Seung–Bok; Hong, Seokmann; Han, Moonsik

doi:10.1016/j.ijmecsci.2004.02.011

Cited by 31 publications

(17 citation statements)

References 15 publications

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“…2 as shown Table 1. In general, the natural frequency of the rubber element is much lower than that of the piezo stack element; therefore, there is no option but for the hybrid mount to connect the two elements -rubber and piezo stack -in series according to Eqs (1) and (2). However, design condition No.…”

Section: Conceptual Designmentioning

confidence: 99%

“…Several types of hybrid mounts are being studied in order to achieve favorable vibration control performance in wide frequency excitations. For example, efficient vibration isolation performance has been achieved by activating the ER fluid for large amplitude and low frequency excitations, while activating the piezo actuator for small magnitude and high frequency excitations [2]. Ichchou et al [3] proposed a piezo-rubber mount, and experimentally demonstrated its efficacy by utilizing an adaptive control law.…”

Section: Introductionmentioning

confidence: 99%

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A Study on the Hybrid Mount against Vibration and Shock for Naval Ships

Moon

Kwak²,

Chung

et al. 2010

Shock and Vibration

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In naval ships, some methods or devices are acquired both to cut off the transmission of vibration from shipboard machineries and to protect them from external shock loading. One of the approaches is to install the passive mountings between machinery and a flexible supporting structure. More advanced performance has become necessary recently so far as at high frequencies in order to retain the stealth function of certain types of naval vessels.For the purpose of this research, a novel hybrid mount for shipboard machinery installed on naval ships was developed. The mount is combined with a rubber mount and piezostack actuators. The rubber mount is one of the most popular and effective passive mounts to have been applied to various vibration systems to date. The piezostack actuator is featured by a fast response time, small displacement and low power consumption. Through a series of experimental tests conducted in accordance with MIL-M-17185A(SHIPS), MIL-M-17508F(SH), and MIL-S-901D which are US military specifications related to the performance requirements of the mount, it has been confirmed that the hybrid mount shows more effective performance for use in naval ships.

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Section: Conceptual Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Study on the Hybrid Mount against Vibration and Shock for Naval Ships

Moon

Kwak²,

Chung

et al. 2010

Shock and Vibration

Self Cite

View full text Add to dashboard Cite

show abstract

“…In this work, a sliding mode controller was designed and implemented to attenuate the vibration of the structure subjected to high-frequency and small-magnitude excitations. 18 It is noted here that in order to successfully achieve vibration control performance, accurate system models are absolutely required for the above-mentioned control methods. However, in practice, it is difficult to formulate an accurate mathematical or analytical model of the flexible structure due to several uncertainties such as parameter variation.…”

Section: Introductionmentioning

confidence: 99%

A new self-tuning fuzzy controller for vibration of a flexible structure subjected to multi-frequency excitations

Choi

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part I:

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This work proposes a new self-tuning fuzzy controller for vibration control of a flexible structure subjected to both single-frequency and multi-frequency excitations. A piezoelectric stack actuator is used to generate control force to attenuate vibrations in the resonant and non-resonant frequency ranges. As a first step, modal frequencies and modal shapes of the flexible beam structure are obtained via the finite element method, and these are verified through comparison with the measured values. Second, in order to attenuate multi-frequency vibration of the beam, a new fuzzy controller with self-tuning factors is proposed. This controller is independent of the structure model and very adaptive to variable excitations. Then, vibration control performances of the self-tuning fuzzy controller are experimentally investigated under two different excitation conditions: single-frequency and multi-frequency excitations. It is shown that vibration control capability of the proposed controller outperforms conventional fuzzy controller under two different excitation conditions. In addition, it is demonstrated by experimentally implementing the proposed self-tuning fuzzy controller that high performances of multi-frequency vibration control are successfully achieved in which both amplitude and frequency of sinusoidal excitations are varied.

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“…However, the two methods have some disadvantages. The active one includes piezoelectric actuators [4][5][6] and electromagnetic actuators [7][8][9][10]. Among the active elements, the piezoelectric actuator features fast response speed, small stroke, compact structure, and high force generation.…”

Section: Introductionmentioning

confidence: 99%

Research on Hybrid Isolation System for Micro-Nano-Fabrication Platform

Wang

et al. 2014

Advances in Mechanical Engineering

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In order to obtain better vibration suppression effect, this paper designs a semiactive/fully active hybrid isolator by using magnetorheological elastomer (MRE) and piezoelectric material. Combined with multimode control scheme, full frequency vibration suppression is achieved. Firstly, series type structure is determined for the hybrid isolator, and the structure of hybrid isolator is designed. Next, the dynamic model of hybrid isolator is derived, the dynamic characteristics measurement for MRE isolator and piezoelectric stack actuator (PSA) is established, and parameters such as voltage-displacement coefficient, stiffness and damping constant are identified from the experimental results, respectively. Meanwhile, the switch frequency is determined by experimental results of PSA and MRE isolator. Lastly, influence of the stiffness of MRE, control voltage of PSA, and intermediate mass on hybrid isolator system is analyzed by simulations, and the results show that the hybrid isolator proposed is effective.

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Vibration control of a flexible structure using a hybrid mount

Cited by 31 publications

References 15 publications

A Study on the Hybrid Mount against Vibration and Shock for Naval Ships

A Study on the Hybrid Mount against Vibration and Shock for Naval Ships

A new self-tuning fuzzy controller for vibration of a flexible structure subjected to multi-frequency excitations

Research on Hybrid Isolation System for Micro-Nano-Fabrication Platform

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