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Dr. Emiliano Pereira González
Universidad de Alcalá - UAH

Basic Info


Research Keywords & Expertise

0 Vibration Control
0 Vibration Isolation
0 isolation vibration.
0 Vibration control of mechanical systems
0 control and signal processing

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Vibration Control
Vibration control of mechanical systems
Vibration Isolation

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Short Biography

Emiliano Pereira (M’07) received the Ph.D. degree in industrial engineering from the Universidad de Castilla-La Mancha, Spain, in 2009. He was researcher at ARC Centre for Complex Dynamic Systems and Control, University of Newcastle, Australia and at the Vibration Engineering Section in University of Exeter. He is currently a Senior Lecturer at the Polytechnic School of Engineering, Universidad de Alcalá, Spain. His current research interests involve active and passive damping of vibrations in civil structures via inertial mass actuators.

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Journal article
Published: 29 June 2021 in Mathematics
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Friction-induced stick-slip vibrations are one of the major causes for down-hole drill-string failures. Consequently, several nonlinear models and control approaches have been proposed to solve this problem. This work proposes a dual-loop control strategy. The inner loop damps the vibration of the system, eliminating the limit cycle due to nonlinear friction. The outer loop achieves the desired velocity with a fast time response. The optimal tuning of the control parameters is carried out with a multi-method ensemble meta-heuristic, the Coral Reefs Optimisation algorithm with Substrate Layer (CRO-SL). It is an evolutionary-type algorithm that combines different search strategies within a single population, obtaining a robust, high-performance algorithm to tackle hard optimisation problems. An application example based on a real nonlinear dynamics model of a drill-string illustrates that the controller optimised by the CRO-SL achieves excellent performance in terms of stick-slip vibrations cancellation, fast time response, robustness to system parameter uncertainties and chattering phenomenon prevention.

ACS Style

Jorge Pérez-Aracil; Carlos Camacho-Gómez; Emiliano Pereira; Vahid Vaziri; Sumeet Aphale; Sancho Salcedo-Sanz. Eliminating Stick-Slip Vibrations in Drill-Strings with a Dual-Loop Control Strategy Optimised by the CRO-SL Algorithm. Mathematics 2021, 9, 1526 .

AMA Style

Jorge Pérez-Aracil, Carlos Camacho-Gómez, Emiliano Pereira, Vahid Vaziri, Sumeet Aphale, Sancho Salcedo-Sanz. Eliminating Stick-Slip Vibrations in Drill-Strings with a Dual-Loop Control Strategy Optimised by the CRO-SL Algorithm. Mathematics. 2021; 9 (13):1526.

Chicago/Turabian Style

Jorge Pérez-Aracil; Carlos Camacho-Gómez; Emiliano Pereira; Vahid Vaziri; Sumeet Aphale; Sancho Salcedo-Sanz. 2021. "Eliminating Stick-Slip Vibrations in Drill-Strings with a Dual-Loop Control Strategy Optimised by the CRO-SL Algorithm." Mathematics 9, no. 13: 1526.

Journal article
Published: 24 June 2021 in Applied Sciences
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In this paper, a novel procedure for optimal design of geometrically nonlinear submerged arches is proposed. It is based on the Coral Reefs Optimization with Substrate Layers algorithm, a multi-method ensemble evolutionary approach for solving optimization problems. A novel arch shape parameterization is combined with the Coral Reefs Optimization with Substrate Layers algorithm. This new parameterization allows considering geometrical parameters in the design process, in addition to the reduction of the bending moment carried out by the classical design approach. The importance of considering the second-order behaviour of the arch structure is shown by different numerical experiments. Moreover, it is shown that the use of Coral Reefs Optimization with Substrate Layers algorithm leads to nearly-optimal solutions, ensuring the stability of the structure, reducing the maximum absolute bending moment value, and complying with the serviceability structural restrictions.

ACS Style

Jorge Pérez-Aracil; Carlos Camacho-Gómez; Alejandro Hernández-Díaz; Emiliano Pereira; Sancho Salcedo-Sanz. Optimum Shape Design of Geometrically Nonlinear Submerged Arches Using the Coral Reefs Optimization with Substrate Layers Algorithm. Applied Sciences 2021, 11, 5862 .

AMA Style

Jorge Pérez-Aracil, Carlos Camacho-Gómez, Alejandro Hernández-Díaz, Emiliano Pereira, Sancho Salcedo-Sanz. Optimum Shape Design of Geometrically Nonlinear Submerged Arches Using the Coral Reefs Optimization with Substrate Layers Algorithm. Applied Sciences. 2021; 11 (13):5862.

Chicago/Turabian Style

Jorge Pérez-Aracil; Carlos Camacho-Gómez; Alejandro Hernández-Díaz; Emiliano Pereira; Sancho Salcedo-Sanz. 2021. "Optimum Shape Design of Geometrically Nonlinear Submerged Arches Using the Coral Reefs Optimization with Substrate Layers Algorithm." Applied Sciences 11, no. 13: 5862.

Article
Published: 25 March 2021 in Meccanica
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This work studies the influence of a vibration isolator on the response of a flexible base structure. Two strategies are compared: passive and active vibration isolation (PVI, AVI). Although the multiple advantages of AVI over PVI techniques are well known, their effect in the base structure has not to date been compared. This interaction has an important role in the performance of the general control system, especially when the vibration isolation system is not the only system on the base structure or when there are multiple isolators working simultaneously on it. In addition, the structural serviceability of the base structure can also be affected. The analysis of the vibration isolation problem is made from a wide perspective, including the effect that isolator has on the base structure. Hence assuming the base structure is a non-rigid system. The effect of the isolation system on the base response is studied for an extensive range of base structures, thus showing different possible scenarios. The influence is quantified by comparing the peak magnitude response of the base when both passive and active vibration isolation techniques are used. The theoretical results have been corroborated by undertaking experimental tests on a full-scale laboratory structure.

ACS Style

J. Pérez-Aracil; E. Pereira; Iván M. Díaz; P. Reynolds. Passive and active vibration isolation under isolator-structure interaction: application to vertical excitations. Meccanica 2021, 56, 1921 -1935.

AMA Style

J. Pérez-Aracil, E. Pereira, Iván M. Díaz, P. Reynolds. Passive and active vibration isolation under isolator-structure interaction: application to vertical excitations. Meccanica. 2021; 56 (8):1921-1935.

Chicago/Turabian Style

J. Pérez-Aracil; E. Pereira; Iván M. Díaz; P. Reynolds. 2021. "Passive and active vibration isolation under isolator-structure interaction: application to vertical excitations." Meccanica 56, no. 8: 1921-1935.

Applications paper
Published: 05 February 2021 in Experimental Techniques
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This paper presents a common framework for designing tune mass dampers (TMD) and active mass dampers (AMD) to control the vibrations of shear buildings. This common framework is used for tuning the parameters of TMD and AMD devices in order to achieve a particular control objective. Thus, TMD and AMD can be better compared in practical applications. As an application example, two scaled TMD and AMD prototypes are tuned and installed in a two-storey building model. The parameters of the TMD and AMD are obtained by using this common framework and the same control objective. Finally, the performance assessment of these scaled prototypes is presented, highlighting the theoretical limitations and implementation problems, which can be used as practical guidelines for future real implementations.

ACS Style

A. Magdaleno; E. Pereira; P. Reynolds; A. Lorenzana. A Common Framework for Tuned and Active Mass Dampers: Application to a Two-Storey Building Model. Experimental Techniques 2021, 1 -11.

AMA Style

A. Magdaleno, E. Pereira, P. Reynolds, A. Lorenzana. A Common Framework for Tuned and Active Mass Dampers: Application to a Two-Storey Building Model. Experimental Techniques. 2021; ():1-11.

Chicago/Turabian Style

A. Magdaleno; E. Pereira; P. Reynolds; A. Lorenzana. 2021. "A Common Framework for Tuned and Active Mass Dampers: Application to a Two-Storey Building Model." Experimental Techniques , no. : 1-11.

Journal article
Published: 21 January 2021 in Fusion Engineering and Design
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The Linear IFMIF (International Fusion Materials Irradiation Facility) Prototype Accelerator (LIPAc) is a 9 MeV, 125 mA, continuous wave (CW) deuteron accelerator aimed to validate the technology for the IFMIF accelerators. The construction of LIPAc, which is currently the most powerful deuteron accelerator in the world, has been carried out under the Broader Approach (BA) Agreement between EU and Japan, and it is located at Rokkasho (Japan). CIEMAT is one of the five European Institutions that has participated in the design, manufacturing and commissioning/operation of the main accelerator components, among them, the Radio Frequency Power System (RFPS). The RFPS contains all the equipment necessary to generate the required RF power to feed the LIPAc cavities. These cavities demand eighteen RF power chains at 175 MHz being distributed as follows: eight 200 kW tetrode-based chains for the Radiofrequency Quadrupole (RFQ), two 16 kW solid-state chains for the re-buncher cavities, and eight 105 kW tetrode-based chains for the Superconducting RF Linac Half-Wave Resonators. The design of the RFPS main components is presented in this paper, including the tetrode-based chains, the Solid-State Power Amplifier (SSPA) for the re-buncher cavities, the High Voltage Power Supplies (HVPSs) for the final amplifiers anodes and the RF water cooling system. Additionally, the main difficulties encountered during the first months of the RFPS commissioning and operation will be described, together with the applied improvements.

ACS Style

Purificacion Mendez; David Regidor; Moises Weber; Cristina de la Morena; Igor Kirpitchev; Angela Garcia; Alvaro Marqueta; Augusto Pereira; Joaquin Molla; Angel Ibarra; Philippe Cara; Michel Desmons; Daniel Duglue; Herve Dzitko; Enrico Fagotti; Dominique Gex; Francesco Grespan; Kenichi Hayashi; Antti Jokinen; Atsushi Kasugai; Keitaro Kondo; Naoya Kubo; Sunao Maebara; Alvaro Marchena; Ivan Moya; Antonio Palmieri; Emiliano Pereira; Takahiro Shinya; Dirk Vandeplassche. LIPAc RF power system: design and main practical implementation issues. Fusion Engineering and Design 2021, 165, 112226 .

AMA Style

Purificacion Mendez, David Regidor, Moises Weber, Cristina de la Morena, Igor Kirpitchev, Angela Garcia, Alvaro Marqueta, Augusto Pereira, Joaquin Molla, Angel Ibarra, Philippe Cara, Michel Desmons, Daniel Duglue, Herve Dzitko, Enrico Fagotti, Dominique Gex, Francesco Grespan, Kenichi Hayashi, Antti Jokinen, Atsushi Kasugai, Keitaro Kondo, Naoya Kubo, Sunao Maebara, Alvaro Marchena, Ivan Moya, Antonio Palmieri, Emiliano Pereira, Takahiro Shinya, Dirk Vandeplassche. LIPAc RF power system: design and main practical implementation issues. Fusion Engineering and Design. 2021; 165 ():112226.

Chicago/Turabian Style

Purificacion Mendez; David Regidor; Moises Weber; Cristina de la Morena; Igor Kirpitchev; Angela Garcia; Alvaro Marqueta; Augusto Pereira; Joaquin Molla; Angel Ibarra; Philippe Cara; Michel Desmons; Daniel Duglue; Herve Dzitko; Enrico Fagotti; Dominique Gex; Francesco Grespan; Kenichi Hayashi; Antti Jokinen; Atsushi Kasugai; Keitaro Kondo; Naoya Kubo; Sunao Maebara; Alvaro Marchena; Ivan Moya; Antonio Palmieri; Emiliano Pereira; Takahiro Shinya; Dirk Vandeplassche. 2021. "LIPAc RF power system: design and main practical implementation issues." Fusion Engineering and Design 165, no. : 112226.

Journal article
Published: 25 November 2020 in IEEE Access
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This paper discusses the performance of a multi-method ensemble meta-heuristic for optimization in a problem of submerged arches design. Specifically, the Coral Reefs Optimization algorithm with Substrate Layers (CRO-SL) is proposed. It is a multi-method evolutionary ensemble which combines different searching structures in a single population. In this case, some novel searching strategies such as the Firefly algorithm and the Water Wave Optimization have been proposed to be included in the CRO-SL algorithm. In addition, some other traditional searching structures such as classical crossovers, Gaussian mutation operators, Harmony search and Differential Evolution search strategies have also been implemented in the algorithm. The proposed CRO-SL has been applied to the optimal design of submerged arches in deep waters, considering several design aspects such as the bending moment of the beam and the airspace of the arch. The evaluation of the submerged arches quality is obtained after the simulation of the arches by means of a finite elements computational software, which has been hybridized with the CRO-SL algorithm in the process of fitness calculation. It will be shown that the CRO-SL is able to obtain excellent solutions to submerged arches design problems. For this, the computational performance of each substrate (different searching strategies) in this optimization problem will be discussed and the results obtained will be compared with those in alternative works for similar experiments.

ACS Style

Jorge Perez-Aracil; Carlos Camacho-Gomez; Alejandro Manuel Hernandez-Diaz; Emiliano Pereira; Sancho Salcedo-Sanz. Submerged Arches Optimal Design With a Multi-Method Ensemble Meta-Heuristic Approach. IEEE Access 2020, 8, 215057 -215072.

AMA Style

Jorge Perez-Aracil, Carlos Camacho-Gomez, Alejandro Manuel Hernandez-Diaz, Emiliano Pereira, Sancho Salcedo-Sanz. Submerged Arches Optimal Design With a Multi-Method Ensemble Meta-Heuristic Approach. IEEE Access. 2020; 8 (99):215057-215072.

Chicago/Turabian Style

Jorge Perez-Aracil; Carlos Camacho-Gomez; Alejandro Manuel Hernandez-Diaz; Emiliano Pereira; Sancho Salcedo-Sanz. 2020. "Submerged Arches Optimal Design With a Multi-Method Ensemble Meta-Heuristic Approach." IEEE Access 8, no. 99: 215057-215072.

Journal article
Published: 22 October 2020 in Actuators
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In many applications comprised of multiple platforms with stringent vibration isolation requirements, several vibration isolators are employed to work in tandem. They usually must accomplish two objectives: (i) reduce the vibration level of each platform; and (ii) maintain the required alignment with respect to each other or with a fixed reference. If the isolators are located on a rigid supporting structure, the problem can be approached as a classical vibration isolation (VI) problem, in which an increase in damping implies a reduction of vibration level experienced by the platforms. However, there are an increasing number of scenarios in which the dynamic interaction between the isolator and the base structure has the potential to alter the system response and consequently degrade VI performance. In this work, a generalized method to analyze the combined VI and alignment problem, for multiple isolators located on a flexible supporting structure, is proposed. The dynamic interaction between the platforms and the isolators is considered in the control design, and it is proved employing two different functional values that the maximum damping solution is not always the best approach when the dynamics of the supporting structure are considered. Numerical simulations are presented to validate the theory developed and robustness of the proposed control approach is demonstrated.

ACS Style

Jorge Pérez-Aracil; Emiliano Pereira; Sumeet S. Aphale; Paul Reynolds. Vibration Isolation and Alignment of Multiple Platforms on a Non-Rigid Supporting Structure. Actuators 2020, 9, 108 .

AMA Style

Jorge Pérez-Aracil, Emiliano Pereira, Sumeet S. Aphale, Paul Reynolds. Vibration Isolation and Alignment of Multiple Platforms on a Non-Rigid Supporting Structure. Actuators. 2020; 9 (4):108.

Chicago/Turabian Style

Jorge Pérez-Aracil; Emiliano Pereira; Sumeet S. Aphale; Paul Reynolds. 2020. "Vibration Isolation and Alignment of Multiple Platforms on a Non-Rigid Supporting Structure." Actuators 9, no. 4: 108.

Journal article
Published: 02 August 2019 in Energies
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This paper proposes a novel cryogenic fluid cold plate designed for the testing of cryogenic space components. The cold plate is able to achieve cryogenic temperature operation down to −196 °C with a low liquid nitrogen (LN2) consumption. A good tradeoff between high rigidity and low thermal conduction is achieved thanks to a hexapod configuration, which is formed by six hinge–axle–hole articulations in which each linking rod bears only axial loads. Thus, there is not any stress concentration, which reduces the diameter of rod sections and reduces the rods’ thermal conduction. This novel design has a unique set of the following properties: Simple construction, low thermal conduction, high thermal inertia, lack of vibrational noise when cooling, isostatic structural behavior, high natural frequency response, adjustable position, vacuum-suitability, reliability, and non-magnetic. Additionally, the presented cold plate design is low-cost and can be easily replicated. Experimental tests showed that a temperature of at least −190 °C can be reached on the top surface of the cold plate with an LN2 consumption of 10 liters and a minimum vibration frequency of 115 Hz, which is high enough for most vibration tests of space components.

ACS Style

Efrén Díez-Jiménez; Roberto Alcover-Sánchez; Emiliano Pereira; María Jesús Gómez García; Patricia Martínez Vián; Díez- Jiménez; Alcover- Sánchez; Vián. Design and Test of Cryogenic Cold Plate for Thermal-Vacuum Testing of Space Components. Energies 2019, 12, 2991 .

AMA Style

Efrén Díez-Jiménez, Roberto Alcover-Sánchez, Emiliano Pereira, María Jesús Gómez García, Patricia Martínez Vián, Díez- Jiménez, Alcover- Sánchez, Vián. Design and Test of Cryogenic Cold Plate for Thermal-Vacuum Testing of Space Components. Energies. 2019; 12 (15):2991.

Chicago/Turabian Style

Efrén Díez-Jiménez; Roberto Alcover-Sánchez; Emiliano Pereira; María Jesús Gómez García; Patricia Martínez Vián; Díez- Jiménez; Alcover- Sánchez; Vián. 2019. "Design and Test of Cryogenic Cold Plate for Thermal-Vacuum Testing of Space Components." Energies 12, no. 15: 2991.

Journal article
Published: 11 July 2019 in Structural Control and Health Monitoring
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ACS Style

Xidong Wang; Emiliano Pereira; Jaime H. García‐Palacios; Iván M. Díaz. A general vibration control methodology for human‐induced vibrations. Structural Control and Health Monitoring 2019, 26, 1 .

AMA Style

Xidong Wang, Emiliano Pereira, Jaime H. García‐Palacios, Iván M. Díaz. A general vibration control methodology for human‐induced vibrations. Structural Control and Health Monitoring. 2019; 26 (10):1.

Chicago/Turabian Style

Xidong Wang; Emiliano Pereira; Jaime H. García‐Palacios; Iván M. Díaz. 2019. "A general vibration control methodology for human‐induced vibrations." Structural Control and Health Monitoring 26, no. 10: 1.

Journal article
Published: 01 March 2018 in Communications in Nonlinear Science and Numerical Simulation
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ACS Style

S. Salcedo-Sanz; A. Aybar-Ruíz; C. Camacho-Gómez; E. Pereira. Efficient fractal-based mutation in evolutionary algorithms from iterated function systems. Communications in Nonlinear Science and Numerical Simulation 2018, 56, 434 -446.

AMA Style

S. Salcedo-Sanz, A. Aybar-Ruíz, C. Camacho-Gómez, E. Pereira. Efficient fractal-based mutation in evolutionary algorithms from iterated function systems. Communications in Nonlinear Science and Numerical Simulation. 2018; 56 ():434-446.

Chicago/Turabian Style

S. Salcedo-Sanz; A. Aybar-Ruíz; C. Camacho-Gómez; E. Pereira. 2018. "Efficient fractal-based mutation in evolutionary algorithms from iterated function systems." Communications in Nonlinear Science and Numerical Simulation 56, no. : 434-446.

Journal article
Published: 22 December 2017 in Engineering Structures
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Active vibration control (AVC) via inertial-mass actuators is a viable technique to mitigate human-induced vibrations in civil structures. A multi-input multi-output (MIMO) AVC has been previously proposed in the literature to simultaneously find the sensor/actuator pairs’ optimal placements and tune the control gains. However, the method involved local gradient-based methods, which is not affordable when the number of possible locations of actuators is large. In this case, the computation time to obtain a local solution may be huge and unaffordable, which limits the number of test points and/or actuators/sensors considered. This paper proposes an alternative approach based on a recently proposed meta-heuristic, the Coral Reefs Optimization (CRO) algorithm. More concretely, an enhanced version of the CRO is considered, the Coral Reefs Optimization with Substrate Layer (CRO-SL). The CRO-SL is a competitive co-evolution algorithm in which different exploration procedures are jointly evolved within a single population of potential solutions to the problem. The proposed algorithm is thus able to promote competition among different search methods to solve hard optimization problems. In terms of structural design, this work provides an important step to improve the applicability of AVC systems to real complex structures (with a large number of vibration modes and/or with a large number of test points) by achieving global optimum designs with affordable computation time. A finite element model of a real complex floor structure is used to illustrate the contributions of this paper.

ACS Style

C. Camacho-Gómez; X. Wang; E. Pereira; I.M. Díaz; S. Salcedo-Sanz. Active vibration control design using the Coral Reefs Optimization with Substrate Layer algorithm. Engineering Structures 2017, 157, 14 -26.

AMA Style

C. Camacho-Gómez, X. Wang, E. Pereira, I.M. Díaz, S. Salcedo-Sanz. Active vibration control design using the Coral Reefs Optimization with Substrate Layer algorithm. Engineering Structures. 2017; 157 ():14-26.

Chicago/Turabian Style

C. Camacho-Gómez; X. Wang; E. Pereira; I.M. Díaz; S. Salcedo-Sanz. 2017. "Active vibration control design using the Coral Reefs Optimization with Substrate Layer algorithm." Engineering Structures 157, no. : 14-26.

Journal article
Published: 01 April 2017 in Journal of Sound and Vibration
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ACS Style

S. Salcedo-Sanz; C. Camacho-Gómez; Alvaro Magdaleno; Emiliano Pereira; Antolin Lorenzana. Structures vibration control via Tuned Mass Dampers using a co-evolution Coral Reefs Optimization algorithm. Journal of Sound and Vibration 2017, 393, 62 -75.

AMA Style

S. Salcedo-Sanz, C. Camacho-Gómez, Alvaro Magdaleno, Emiliano Pereira, Antolin Lorenzana. Structures vibration control via Tuned Mass Dampers using a co-evolution Coral Reefs Optimization algorithm. Journal of Sound and Vibration. 2017; 393 ():62-75.

Chicago/Turabian Style

S. Salcedo-Sanz; C. Camacho-Gómez; Alvaro Magdaleno; Emiliano Pereira; Antolin Lorenzana. 2017. "Structures vibration control via Tuned Mass Dampers using a co-evolution Coral Reefs Optimization algorithm." Journal of Sound and Vibration 393, no. : 62-75.

Conference paper
Published: 01 September 2016 in Journal of Physics: Conference Series
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This paper explores different vibration control strategies for the cancellation of human-induced vibration of a structure with time-varying modal parameters. The motivation of this study is an urban stress-ribbon footbridge (Pedro Gomez Bosque, Valladolid, Spain) that, after a whole-year monitoring, it has been obtained that the natural frequency of a vibration mode at approximately 1.8 Hz (within the normal range of walking) changes up to 20%, mainly due to temperature variations. Thus, this paper takes the annual modal parameter estimates (aprox. 14000 estimations) of this mode and designs three control strategies: a) a tuned mass damper (TMD) tuned to the aforementioned mode using its most-repeated modal properties, b) a semi-active TMD with an on-off control law for the TMD damping, and c) an active mass damper designed using the well-known velocity feedback control strategy with a saturation nonlinearity. Illustrative results have been reported from this preliminary study.

ACS Style

Jose M. Soria; Ivan M. Díaz; Emiliano Pereira; Jaime H. García-Palacios; Xidong Wang. Exploring vibration control strategies for a footbridge with time-varying modal parameters. Journal of Physics: Conference Series 2016, 744, 12170 .

AMA Style

Jose M. Soria, Ivan M. Díaz, Emiliano Pereira, Jaime H. García-Palacios, Xidong Wang. Exploring vibration control strategies for a footbridge with time-varying modal parameters. Journal of Physics: Conference Series. 2016; 744 ():12170.

Chicago/Turabian Style

Jose M. Soria; Ivan M. Díaz; Emiliano Pereira; Jaime H. García-Palacios; Xidong Wang. 2016. "Exploring vibration control strategies for a footbridge with time-varying modal parameters." Journal of Physics: Conference Series 744, no. : 12170.

Journal article
Published: 01 December 2014 in Engineering Structures
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ACS Style

Emiliano Pereira; Iván M. Díaz; Emma J. Hudson; Paul Reynolds. Optimal control-based methodology for active vibration control of pedestrian structures. Engineering Structures 2014, 80, 153 -162.

AMA Style

Emiliano Pereira, Iván M. Díaz, Emma J. Hudson, Paul Reynolds. Optimal control-based methodology for active vibration control of pedestrian structures. Engineering Structures. 2014; 80 ():153-162.

Chicago/Turabian Style

Emiliano Pereira; Iván M. Díaz; Emma J. Hudson; Paul Reynolds. 2014. "Optimal control-based methodology for active vibration control of pedestrian structures." Engineering Structures 80, no. : 153-162.

Journal article
Published: 16 October 2013 in Mechanism and Machine Theory
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This work presents a new methodology for the design of a passivity-based control of single-link flexible manipulators. The control objective is the precise positioning of the link tip under large payload changes, which is achieved by combining a precise joint positioning with a link vibration damping. The main ingredients of the proposed methodology are as follows: a) a linear strain feedback is used to decouple the joint and link dynamics, b) the precise joint positioning is thus simplified to a motor controller, which is designed to be robust to joint frictions, and c) the residual tip vibrations are damped by a control designed using a passivity property between the strain measured at the base of the link and the joint velocity. Simulations and experimental results illustrated the performance of the proposed methodology.

ACS Style

Vicente Feliu; Emiliano Pereira; Iván M. Díaz. Passivity-based control of single-link flexible manipulators using a linear strain feedback. Mechanism and Machine Theory 2013, 71, 191 -208.

AMA Style

Vicente Feliu, Emiliano Pereira, Iván M. Díaz. Passivity-based control of single-link flexible manipulators using a linear strain feedback. Mechanism and Machine Theory. 2013; 71 ():191-208.

Chicago/Turabian Style

Vicente Feliu; Emiliano Pereira; Iván M. Díaz. 2013. "Passivity-based control of single-link flexible manipulators using a linear strain feedback." Mechanism and Machine Theory 71, no. : 191-208.

Journal article
Published: 01 June 2013 in Journal of Sound and Vibration
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ACS Style

Emiliano Pereira; Sumeet S. Aphale. Stability of positive-position feedback controllers with low-frequency restrictions. Journal of Sound and Vibration 2013, 332, 2900 -2909.

AMA Style

Emiliano Pereira, Sumeet S. Aphale. Stability of positive-position feedback controllers with low-frequency restrictions. Journal of Sound and Vibration. 2013; 332 (12):2900-2909.

Chicago/Turabian Style

Emiliano Pereira; Sumeet S. Aphale. 2013. "Stability of positive-position feedback controllers with low-frequency restrictions." Journal of Sound and Vibration 332, no. 12: 2900-2909.

Journal article
Published: 01 August 2012 in Engineering Structures
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ACS Style

Iván M. Díaz; Emiliano Pereira; Emma Hudson; Paul Reynolds. Enhancing active vibration control of pedestrian structures using inertial actuators with local feedback control. Engineering Structures 2012, 41, 157 -166.

AMA Style

Iván M. Díaz, Emiliano Pereira, Emma Hudson, Paul Reynolds. Enhancing active vibration control of pedestrian structures using inertial actuators with local feedback control. Engineering Structures. 2012; 41 ():157-166.

Chicago/Turabian Style

Iván M. Díaz; Emiliano Pereira; Emma Hudson; Paul Reynolds. 2012. "Enhancing active vibration control of pedestrian structures using inertial actuators with local feedback control." Engineering Structures 41, no. : 157-166.

Journal article
Published: 29 February 2012 in Control Engineering Practice
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ACS Style

Emiliano Pereira; Juan Trapero; Iván M. Díaz; Vicente Feliu-Batlle. Adaptive input shaping for single-link flexible manipulators using an algebraic identification. Control Engineering Practice 2012, 20, 138 -147.

AMA Style

Emiliano Pereira, Juan Trapero, Iván M. Díaz, Vicente Feliu-Batlle. Adaptive input shaping for single-link flexible manipulators using an algebraic identification. Control Engineering Practice. 2012; 20 (2):138-147.

Chicago/Turabian Style

Emiliano Pereira; Juan Trapero; Iván M. Díaz; Vicente Feliu-Batlle. 2012. "Adaptive input shaping for single-link flexible manipulators using an algebraic identification." Control Engineering Practice 20, no. 2: 138-147.

Journal article
Published: 31 October 2011 in Mechanical Systems and Signal Processing
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ACS Style

Emiliano Pereira; Juan Trapero; Iván M. Díaz; Vicente Feliu-Batlle. Algebraic identification of the first two natural frequencies of flexible-beam-like structures. Mechanical Systems and Signal Processing 2011, 25, 2324 -2335.

AMA Style

Emiliano Pereira, Juan Trapero, Iván M. Díaz, Vicente Feliu-Batlle. Algebraic identification of the first two natural frequencies of flexible-beam-like structures. Mechanical Systems and Signal Processing. 2011; 25 (7):2324-2335.

Chicago/Turabian Style

Emiliano Pereira; Juan Trapero; Iván M. Díaz; Vicente Feliu-Batlle. 2011. "Algebraic identification of the first two natural frequencies of flexible-beam-like structures." Mechanical Systems and Signal Processing 25, no. 7: 2324-2335.

Journal article
Published: 04 November 2010 in Structural Control and Health Monitoring
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Integral resonant control (IRC) has been recently introduced as a simple, robust and high‐performance technique for vibration control of smart structures instrumented with collocated piezoelectric actuator–sensor pairs. This work deals with the design and implementation of an active vibration control (AVC) system based on an IRC strategy for the mitigation of human‐induced vibrations in light‐weight civil engineering structures, such as floors and footbridges, via proof‐mass actuators. This work presents a new AVC strategy that combines an approximate inversion of the proof‐mass actuator dynamics with an IRC‐based strategy. The result is a control scheme with the following desirable characteristics: (i) the closed‐loop system exhibits very high stability margins, (ii) the risk of stroke saturation at low frequencies is significantly reduced so that the saturation nonlinearity, which has to be included to keep the system hardware safe, can be designed to account only for force saturation (i.e. the actuator performance is enhanced), (iii) rigorous stability analysis and systematic design can be proposed and (iv) it is not necessary to measure the actuator force. The stability analysis is carried out using the recently developed stability theorem based on the positive feedback interconnection of systems with negative imaginary frequency response. The control scheme is validated on a full‐scale prestressed concrete laboratory structure. Excellent vibration reduction performance is reported for frequency‐response‐function‐based tests and for walking excitations. Copyright © 2010 John Wiley & Sons, Ltd.

ACS Style

Iván M. Díaz; Emiliano Pereira; Paul Reynolds. Integral resonant control scheme for cancelling human-induced vibrations in light-weight pedestrian structures. Structural Control and Health Monitoring 2010, 19, 55 -69.

AMA Style

Iván M. Díaz, Emiliano Pereira, Paul Reynolds. Integral resonant control scheme for cancelling human-induced vibrations in light-weight pedestrian structures. Structural Control and Health Monitoring. 2010; 19 (1):55-69.

Chicago/Turabian Style

Iván M. Díaz; Emiliano Pereira; Paul Reynolds. 2010. "Integral resonant control scheme for cancelling human-induced vibrations in light-weight pedestrian structures." Structural Control and Health Monitoring 19, no. 1: 55-69.