Experimental investigation of jet pulse control on flexible vibrating structures

Karaiskos, Grigorios; Papanicolaou, Panos P P; Zacharopoulos, D. A.

doi:10.1016/j.ymssp.2016.02.050

Cited by 6 publications

(2 citation statements)

References 25 publications

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“…Allen et al (2000) presented an experimental study on active vibration control of a flexible truss structure using constant air-jet thrusters as actuators. Karaiskos et al (2016) used a single beam and a mass model with two nozzles to produce air-jet pulses. Unlike other studies, base excitation was given as a multitone harmonic signal and random signal for earthquake simulation.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of vibration attenuation on a cantilever beam using air-jet pulses with the particle swarm optimized quasi bang–bang controller

Hızarcı

Kıral

2020

Journal of Vibration and Control

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This study deals with the vibration reduction of a cantilever beam using air-jet thruster actuators controlled by the particle swarm optimized quasi bang–bang controller. In this study, the finite element model of a cantilever beam with the lumped mass of actuators is formed for the numerical simulations. Furthermore, the first-order plus dead time transfer function of the air-jet thruster actuator is found between the inlet pressure and the thrust. The quasi bang–bang control is proposed to suppress vibrations on the beam with impulsive air-jet pulses. The optimal location of the actuators and control parameters are determined with parametric study and particle swarm optimization, respectively. The performance of the control method is measured with the experiments of initial displacement, the presence of tip masses, and external disturbances. According to all results obtained in this study, it has been observed that the air-jet pulses successfully and rapidly attenuate vibration on the cantilever beam with the quasi bang–bang controller.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation of vibration attenuation on a cantilever beam using air-jet pulses with the particle swarm optimized quasi bang–bang controller

Hızarcı

Kıral

2020

Journal of Vibration and Control

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“…To overcome modeling difficulties associate with complex structures, research work resorts to simplified versions of the structure to generate working models [10,[16][17][18]. However, this simplication, although works for some applications, it lacks the sensitivity to parameter changes in the structure and might lead to inadequate prediction of the current state of the structure.…”

Section: Introductionmentioning

confidence: 99%

Relating structural damage to modal frequencies shift using low cost LQG-FEA approach and minimal feedback measurements

Ghailani¹,

El-Sinawi²

2017

J. vibroeng.

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Vibration signature of flexible structures can be used as a tool to monitor the structural health and predict failure. This work presents a practical low cost technique for predicting vibration signature of a mechanical structure and relates it to its structural health. The technique utilizes a model constructed from Modal frequencies and Eigen vectors obtained via finite element analysis (FEA) of the structure. Linear Quadratic Gaussian (LQG) servo controller of the acceleration output of the model is utilized to minimize error between actual acceleration measurements and its estimates. The LQG controller requires minimal feedback measurements from the physical system and can provide acceleration estimates at any location on the structure. Thus, it is adaptable to structures that are complex and/or have limited accessible measurements points. Anytime during operation, a shift in estimated Modal frequencies of the structure is shown to have a strong relationship with variation in structural parameters, (i.e. structural damage). Therefore, the presented technique is unique for three reasons, (a) it uses estimates, rather than actual measurements to identify structural damage, (b) requires minimal feedback measurements from the structure and (c) uses an effective low-cost reduced order model to achieve (a) and (b). The proposed technique is utilized on a pipeline structure and is evaluated both numerically and experimentally as a proof of concept. Research outcomes are presented and discussed.

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Suppression of multiple modal resonances of a cantilever beam by an impact damper

Geng

Ding

Wei

et al. 2020

Appl. Math. Mech.-Engl. Ed.

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Experimental investigation of jet pulse control on flexible vibrating structures

Cited by 6 publications

References 25 publications

Experimental investigation of vibration attenuation on a cantilever beam using air-jet pulses with the particle swarm optimized quasi bang–bang controller

Experimental investigation of vibration attenuation on a cantilever beam using air-jet pulses with the particle swarm optimized quasi bang–bang controller

Relating structural damage to modal frequencies shift using low cost LQG-FEA approach and minimal feedback measurements

Suppression of multiple modal resonances of a cantilever beam by an impact damper

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