Harnessing hydro-kinetic energy from wake-induced vibration using virtual mass spring damper system

Derakhshandeh, Javad Farrokhi; Arjomandi, Maziar; Cazzolato, B.; Dally, Bassam B.

doi:10.1016/j.oceaneng.2015.08.003

“…Equation 1shows the two DOFs are coupled in plunge and pitch displacements. If virtual stiffness and damping are realized via position control with force feedback [5]- [7], realtime calculation of the reference position needs to consider the inertial and aerodynamic coupling. Since (1) is a secondorder approximation of general nonlinear aeroelastic systems, modeling errors can cause inaccuracy of simulated stiffness and damping under position control.…”

Section: A Operation Principle Determinationmentioning

confidence: 99%

“…According to the force/torque transducer structure as well as (5) and 12, force/torque measurements closely take the value ofF s . The desired k and c can be approximated by proper control of the motor torque so thatF s → F s , according to (7). This requires correct knowledge and proper compensation of power loss caused by frictions as well as other un-modeled dynamics and exogenous disturbances.…”

Section: Force/torque Measurement and Controlmentioning

confidence: 99%

Developing a virtual stiffness-damping system for airfoil aeroelasticity testing

Tang

¹

,

Chen

²

,

Tian

³

et al. 2020

Journal of Sound and Vibration

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PSPB accepted the recommendations of an ad hoc committee, which reviewed the policy that had previously been revised in November 2010. The highlights of the current policy are as follows:  The policy reaffirms the principle that authors are free to post their own version of their IEEE periodical or conference articles on their personal Web sites, those of their employers, or their funding agencies for the purpose of meeting public availability requirements prescribed by their funding agencies. Authors may post their version of an article as accepted for publication in an IEEE periodical or conference proceedings. Posting of the final PDF, as published by IEEE Xplore®, continues to be prohibited, except for open-access journal articles supported by payment of an article processing charge (APC), whose authors may freely post the final version.  The policy provides that IEEE periodicals will make available to each author a preprint version of that person's article that includes the Digital Object Identifier, IEEE's copyright notice, and a notice showing the article has been accepted for publication.  The policy states that authors are allowed to post versions of their articles on approved third-party servers that are operated by not-for-profit organizations. Because IEEE policy provides that authors are free to follow public access mandates of government funding agencies, IEEE authors may follow requirements to deposit their accepted manuscripts in those government repositories.

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“…Their secret resides in their simplicity, which makes them ideal for modeling more complex systems by taking advantage of the modularity principle. The concept of an MSD system has been implemented on a vast number of practical fields, such as in the reduction of vibrations [1,2], in control systems analysis [3,4], and in power generation [5,6]. Those systems have been independently studied under different lenses, such as fractional calculus and entropy production.…”

Section: Introductionmentioning

confidence: 99%

Entropy Generation in a Mass-Spring-Damper System Using a Conformable Model

Cruz–Duarte

¹

,

Rosales

²

,

Correa-Cely

³

2020

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This article studies the entropy generation of a mass-spring-damper mechanical system, under the conformable fractional operator definition. We perform several simulations by varying the fractional order γ and the damping ratio ζ , including the usual dynamic response when γ = 1.0 and the typical damping cases. We analyze the entropy production for this system and its strong dependency on both γ and ζ parameters. Therefore, we determine their optimal values to obtain the highest efficiency of the MSD response, as well as other impressive features.

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“…Extending the concept of 1-DOF VSDS to 2 DOFs needs to address the dynamics coupling between each DOF for proper force/torque control. The 2-DOF aeroelastic dynamics are coupled with respect to the displacement of each DOF, and this makes position tracking with force measurement feedback as in [6]- [8] difficult. Instead, using the computed-torque approach based on experimentally identified formula without force feedback [9]- [11] can bypass the dynamics coupling in displacements, which however, necessitates extensive system identification and calibration procedures.…”

Section: Introductionmentioning

confidence: 99%

Parametric Analysis for Robust Force/Torque Tracking Control of a Virtual Stiffness-Damping System in Aeroelastic Instability Testing

Tang

¹

,

Chen

²

,

Tian

³

et al. 2019

2019 American Control Conference (ACC)

0

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PSPB accepted the recommendations of an ad hoc committee, which reviewed the policy that had previously been revised in November 2010. The highlights of the current policy are as follows:  The policy reaffirms the principle that authors are free to post their own version of their IEEE periodical or conference articles on their personal Web sites, those of their employers, or their funding agencies for the purpose of meeting public availability requirements prescribed by their funding agencies. Authors may post their version of an article as accepted for publication in an IEEE periodical or conference proceedings. Posting of the final PDF, as published by IEEE Xplore®, continues to be prohibited, except for open-access journal articles supported by payment of an article processing charge (APC), whose authors may freely post the final version.  The policy provides that IEEE periodicals will make available to each author a preprint version of that person's article that includes the Digital Object Identifier, IEEE's copyright notice, and a notice showing the article has been accepted for publication.  The policy states that authors are allowed to post versions of their articles on approved third-party servers that are operated by not-for-profit organizations. Because IEEE policy provides that authors are free to follow public access mandates of government funding agencies, IEEE authors may follow requirements to deposit their accepted manuscripts in those government repositories.

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Harnessing hydro-kinetic energy from wake-induced vibration using virtual mass spring damper system

Cited by 33 publications

References 20 publications

Developing a virtual stiffness-damping system for airfoil aeroelasticity testing

Developing a virtual stiffness-damping system for airfoil aeroelasticity testing

Entropy Generation in a Mass-Spring-Damper System Using a Conformable Model

Parametric Analysis for Robust Force/Torque Tracking Control of a Virtual Stiffness-Damping System in Aeroelastic Instability Testing

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