Vibration control of a flexible clamped-clamped plate based on an improved FULMS algorithm and laser displacement measurement

Xie, Lingbo; Qiu, Zhi-cheng; Zhang, Xianmin

doi:10.1016/j.ymssp.2015.12.016

Cited by 19 publications

(13 citation statements)

References 10 publications

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“…One important aspect of an experimental test is a reliable method for measuring the vibration amplitudes. Regarding this issue, laser sensors can be utilized to detect the di erences in vibration suppression (with a similar mechanism to those implemented in some previous researches such as [38]).…”

Section: Advancement Of a Customized Look-up Diagrammentioning

confidence: 99%

Optimized design of adaptable vibrations suppressors in semi-active control of circular plate vibrations

2018

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Due to exibility of thin plates, high-amplitude vibrations are observed when they are subjected to severe dynamic loads. Because of the extensive application of circular plates in industry, attenuating the undesired vibrations is of foremost importance. In this paper, Adaptable Vibration Suppressors (AVSs) as a semi-active control approach were utilized to suppress the vibrations in a free circular plate under the concentrative harmonic excitation. Using mode summation method, the mathematical model of the hybrid system including the plate and an arbitrary number of vibration suppressors was analyzed. By developing a complex multiple-loop algorithm, optimum values for the parameters of AVSs (sti ness and position) were achieved such that the plate de ection was comprehensively minimized. According to the results, AVSs acted e ciently in suppressing the vibrations in resonance/non-resonance conditions. It was also observed that optimum AVSs reduced the plate de ection over a broad spectrum of excitation frequencies. Finally, since the algorithm was developed in a general user friendly style, design of AVSs could be extended to other shapes of plates with various boundary conditions and excitations.

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Section: Advancement Of a Customized Look-up Diagrammentioning

confidence: 99%

Optimized design of adaptable vibrations suppressors in semi-active control of circular plate vibrations

2018

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“…As mentioned before, the FUVSSLMS control algorithm can be defined as the combination of the conventional filtered-U least mean square (FULMS) with variable step size (VSS). Then the block diagram of the adaptive feedforward FUVSSLMS control algorithm with variable step size and reference filter is shown in Figure 1 [10,20]. Figure 1.…”

Section: The Adaptive Feedforward Fuvsslms Control Algorithm With Varmentioning

confidence: 99%

“…The iterative process of the adaptive feedforward FUVSSLMS control algorithm can be summarized as follows [6,10,20] …”

Section: The Adaptive Feedforward Fuvsslms Control Algorithm With Varmentioning

confidence: 99%

“…When we try to combine the merits of the conventional filtered-U least mean square (FULMS) control algorithm and variable step size (VSS) together, the FUVSSLMS can be developed and used as the abbreviation of the new control algorithm. An improved FULMS algorithm with variable step size was used to control the resonant vibration of a flexible clamped-clamped plate with laser displacement sensor measurement effectively [10]. Khaled Mayyas [11] proposed a variable step-size selective partial update least mean square (LMS) algorithm; and experiments indicated that the proposed algorithm performed as well as other algorithms while requiring less computational complexity.…”

Section: Introductionmentioning

confidence: 99%

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Analysis and experiments of adaptive feedforward and combined vibration control system with variable step size and reference filter

Xie

Qiu

Zhang

2017

Aerospace Science and Technology

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An adaptive feedforward and combined vibration control system with variable step size and reference filter is analyzed and implemented to suppress the vibration of a kind of thin-walled structure. The theoretical analysis and experiments of adaptive feedforward and combined vibration control algorithms are presented. The experimental setup of a flexible plate bonded PZT (Lead Zirconate Titanate) sensors/actuators is constructed. The control algorithm combines an adaptive feedforward controller and an adaptive feedback controller together, which has shown a superior control performance in the experiments. Considering the disadvantages of fixed step size used in the conventional filtered-U least mean square (FULMS) control algorithm, a variable step-size (VSS) method is applied. Also, a reference filter is used to extract the desired signal from the positive feedback and measurement noise. A proportional derivative (PD) feedback control algorithm is also applied as comparison. The experimental results demonstrate that the adaptive combined control algorithm has better control performance than the adaptive feedforward and PD feedback control algorithms.

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“…It is necessary to consider maximum deformation, strain, stress and failure of the structure to ensure safe operations. Deformation and strain can be measured using displacement sensors, such as linear variable differential transformers (LVDTs) [1], potentiometers [2], laser displacement sensors [3], strain sensors, such as strain gages [4] and fiber optic sensors [5]. Generally, stress and failure can be estimated based on the strain information.…”

Section: Introductionmentioning

confidence: 99%

Displacement, Strain and Failure Estimation for Multi-Material Structure Using the Displacement-Strain Transformation Matrix

et al. 2020

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In this study, we propose a method to estimate structural deformation and failure by using displacement-strain transformation matrices, i.e., strain-to-displacement transformation (SDT) and displacement-to-strain transformation (DST). The proposed SDT method can be used to estimate the complete structural deformation where it is not possible to apply deformation measurement sensors, and the DST method can be used for to estimate structural failures where strain and stress sensors cannot be applied. We applied the SDT matrix to a 1D beam, a 2D plate, rotating structures and real wind turbine blades, and successfully estimated the deformation in the structures. However, certain difficulties were encountered while estimating the displacement of brittle material such as an alumina beam. The study aims at estimating the displacement and stress to predict the failure of the structure. We also explored applying the method to multi-material structures such as a two-beam bonded structure. In the study, we used alumina–aluminum bonded structures because alumina is bonded to the substrate to protect the structure from heat in many cases. Finally, we present the results of the displacement and failure estimation for the alumina–aluminum structure.

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Vibration control of a flexible clamped-clamped plate based on an improved FULMS algorithm and laser displacement measurement

Cited by 19 publications

References 10 publications

Optimized design of adaptable vibrations suppressors in semi-active control of circular plate vibrations

Optimized design of adaptable vibrations suppressors in semi-active control of circular plate vibrations

Analysis and experiments of adaptive feedforward and combined vibration control system with variable step size and reference filter

Displacement, Strain and Failure Estimation for Multi-Material Structure Using the Displacement-Strain Transformation Matrix

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