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Dissertations / Theses on the topic 'Configurable active mass damper'

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Published: 3 June 2025

Last updated: 31 July 2025

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1

Chey, Min Ho. "Passive and Semi-Active Tuned Mass Damper Building Systems." Thesis, University of Canterbury. Civil and Natural Resources Engineering, 2007. http://hdl.handle.net/10092/3431.

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This thesis explores next generation passive and semi-active tuned mass damper (PTMD and SATMD) building systems for reducing the seismic response of tall structures and mitigating damage. The proposed structural configuration separates the upper storey(s) of a structure to act as the 'tuned' mass, either passively or semi-actively. In the view point of traditional TMD system theory, this alternative approach avoids adding excessive redundant mass that is rarely used. In particular, it is proposed to replace the passive spring damper system with a semi-active resetable device based system (SAT

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2

Liedes, T. (Toni). "Improving the performance of the semi-active tuned mass damper." Doctoral thesis, University of Oulu, 2009. http://urn.fi/urn:isbn:9789514291258.

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Abstract The tuned mass damper (TMD) is a well-known and approved concept for resonance vibration control. However, as a fully passive device, the traditional TMD has a limited operating band and rather poor robustness against parameter variations. To overcome these weaknesses, a semi-active control can be applied to TMD. As a result, a more effective and flexible device can be attained. In theory, the application of the semi-active scheme is straightforward and the gain in performance is considerable. In practice, however, the non-idealities associated with actuators and control systems degra

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3

Juma, Hameed W. "Numerical and Experimental Analyses of Actively Controlled Pendulum Tuned Mass Damper." University of Dayton / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1544528950528469.

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4

Ritchey, John Kenneth. "Application of Magneto-Rheological Dampers in Tuned Mass Dampers for Floor Vibration Control." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/35287.

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<p> The purpose of this research is to establish the effectiveness of tuned-mass-dampers (TMD) using semi-active magneto-rheological (MR) dampers to mitigate annoying floor vibrations. Annoying floor vibration is becoming more common in today's building structures since building materials have become stronger and lighter; the advent of computers has resulted in "paperless" offices; and the use of floors for rhythmic activities, such as aerobics and concerts, is more common. Analytical and experimental studies were conducted to provide an understanding of the effects of incorporating the semi

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5

Huang, Haoyu. "A temperature controlled semi-active tuned mass damper using shape memory alloy for vibration reduction applications." Thesis, University of Bath, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.720664.

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This study developed a temperature controlled semi-active tuned mass damper (TMD) using shape memory alloy (SMA) for civil structural applications. It addressed the off-tuning issues caused by the variances in structural mass and stiffness when in service, since off-tuning of the TMD increases the structural response. The effect of in-service temperature on SMA can provide adaptive dynamic properties to TMD. Therefore, the natural frequencies can be adjusted to an optimal range. In this thesis, the material characterisation of SMA is studied through acting dynamic cyclic loading. It was found

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6

Eltaeb, Mohamed A. "Active Control of Pendulum Tuned Mass Dampers for Tall Buildings Subject to Wind Load." University of Dayton / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=dayton150343994189116.

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7

Santos, Rodrigo Borges. "Controle ativo de vibrações em estruturas flexíveis utilizando desigualdades matriciais lineares (LMIs) /." Ilha Solteira : [s.n.], 2008. http://hdl.handle.net/11449/94557.

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Orientador: Vicente Lopes Júnior<br>Banca: Nobuo Oki<br>Banca: José Manoel Balthazar<br>Resumo: Este trabalho tem como propósito projetar controladores para aplicação em tempo real em uma estrutura flexível, objetivando a redução de vibração estrutural. Os controladores são projetados segundo o enfoque de otimização convexa, com formulações envolvendo desigualdades matriciais lineares (LMIs). Duas diferentes sínteses de realimentação são consideradas. A primeira é o projeto de controladores por realimentação de estados, estimados por um observador. A segunda metodologia é baseada no controle H

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8

Santos, Rodrigo Borges [UNESP]. "Controle ativo de vibrações em estruturas flexíveis utilizando desigualdades matriciais lineares (LMIs)." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/94557.

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Made available in DSpace on 2014-06-11T19:27:14Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-02-21Bitstream added on 2014-06-13T20:55:56Z : No. of bitstreams: 1 santos_rb_me_ilha.pdf: 887891 bytes, checksum: 9cff877681cee249ea6c3466ef38a6ed (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Este trabalho tem como propósito projetar controladores para aplicação em tempo real em uma estrutura flexível, objetivando a redução de vibração estrutural. Os controladores são projetados segundo o enfoque de otimização convexa, com formulações envolvendo desigualdades m

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9

Zhou, Shaoyi. "Advances in passive and active damping techniques." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI066.

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Les systèmes mécaniques (e.g. structures flexibles) sont généralement peu amortis, et par conséquent des vibrations de fortes amplitudes peuvent apparaitre. Il apparait nécessaire de développer des stratégies de contrôle vibratoire pour atténuer ces vibrations mécaniques. Cette thèse a pour objectif de développer plusieurs techniques d'amortissement de vibration passives ou actives. La première partie porte sur l'utilisation d'un “inerter” pour améliorer les performances de contrôle vibratoire de deux dispositifs existants, l'amortisseur à masse accordée (TMD) et deux TMDs placés en série (SDT

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10

Chiu, Chun-Wei, and 邱俊煒. "STRUCTURE VIBRATION SUPPRESSION BY NEURAL CONTROLLER AND ACTIVE MASS DAMPER." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/21567296598225664539.

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碩士<br>國立成功大學<br>航空太空工程學系<br>88<br>For the experimental model of fundamental frequency about 1 Hz, the vibration amplitude under resonance excitation is reduced by 80% in steady state response. The vibration amplitude under random excitation can also be suppressed effectively by 70% by the neural controller and active mass damper. In addition, the peak-to-peak displacement magnitude under 1/4 scale of Ji-Ji Earthquake (Sep. 21, 1999) is effectively reduced by 80%. The controller is also shown to be robust to system parameter variations. From the above experiments, the integration of neural

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11

穆如蘭. "Study of Active Tuned Mass Damper in Building Structural Control." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/45125999123917650472.

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碩士<br>中原大學<br>土木工程學系<br>85<br>The non-canonical control form systen is transformed into the canonical control form system. Then, the results are used to develop the fuzzy sliding mode control(FSMC) in active tuned mass damper (TMP) control system. It is desired that the structure under control can be sustained in safety and stability during external disturbances. 　　The control rule is difficult to derive from the classical control theory for building structural control system using active TMD. Furthermore, the improper control force may cause resonance and failure of the structure. It can''t b

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12

Jhih-DeJian and 簡誌德. "Least Input Energy Method for Semi-Active Mass Damper Systems." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/13724517083517286258.

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13

Shia, Syuan, and 夏瑄. "Seismic Design of Passive Tuned Mass Damper and Base Isolation Using Active Control Algorithms." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/vk9nw5.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>105<br>Seismic isolation and tuned mass damper (TMD) have been widely accepted as a passive control strategy for protection of structures. A base-isolated building employs a flexible element underneath the structure that shifts the fundamental frequency of the building away from the dominant frequencies of earthquakes. Due to the fact that the flexible element can introduce excessive displacements at base during severe earthquakes, additional viscous damping devices are recommended to be installed along with the isolation layer in most seismic design codes. On the o

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14

Liu, Yu-Fang, and 劉郁芳. "Analytical and experimental studies on Building Mass Damper System with Semi-active Control Device." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/975hsj.

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博士<br>國立臺灣大學<br>土木工程學研究所<br>106<br>A concept of improving an optimum building mass damper (OBMD) system through a semi-active control method for enhancing the efficiency of controlling structural responses is proposed. The proposed concept entails replacing the passive fluid viscous dampers used in an OBMD system with semi-active magnetorheological (MR) dampers, thus transforming the system into a novel semi-active OBMD (SOBMD) system for better seismic performance. A numerical model based on the Bouc–Wen model with the interpolation technique was established to represent the behavior of the M

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15

Eason, Richard. "High amplitude response behavior of a linear oscillator-nonlinear absorber system: Identification, analysis, and attenuation by using a semi-active absorber in series." Thesis, 2013. http://hdl.handle.net/1911/71949.

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Auxiliary absorbers provide an effective means to attenuate the vibrations of a structural or mechanical system (the "primary structure"). The simplest auxiliary absorber, a tuned mass damper (TMD), provides reliable narrow-band attenuation but is not robust to the effects of detuning. Strongly nonlinear tuned mass dampers (NTMDs) are capable of wide-band, irreversible energy transfer known as "energy pumping" but can also exhibit high amplitude solutions which significantly amplify the response of the primary structure. Semi-active tuned mass dampers (STMDs) incorporate an actuating elemen

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16

Chen, Chia-Heng, and 陳家亨. "Optimal Vibration Control of a Building with Active Tuned Mass Damper Subject to Time-Varying Uncertainties." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/745bb8.

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碩士<br>國立高雄應用科技大學<br>機械工程系<br>105<br>This thesis studies the robust vibration control of a building with an active tuned mass damper (ATMD) subject to time-varying uncertainties. The LQG optimal control method and the the Hybrid Taguchi-Genetic Algorithm (HTGA) are used to design the state feedback gain matrix and observer gain matrix. And then, a sufficient condition in terms of linear matrix inequalities (LMIs) is employed to guarantee that the resulting control system in the presence of time-varying uncertainties is asymptotically stable. Finally, a simulation example is given to demonstrate

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17

Yong-KaiTsou and 鄒永楷. "Application of Servo-Motor Controlled Platform as Active Mass Damper on Vibration Control and its Experimental Verification." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/38421567502707923560.

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碩士<br>國立成功大學<br>土木工程學系碩博士班<br>100<br>The vibration mitigation performance of a conventional tuned mass damper system (TMD) is very sensitive to the fluctuation in tuning of the designed frequency to the natural frequency of the main system. Because of the stochastic characteristics of external loading and errors of identifying system parameters, an active mass damper (AMD) system with optimal selection on control parameters can enhance the designed performance with the help of a supplementary active force acted between the main system and the mass damper. In order to investigate the interactiv

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18

Pasala, Dharma Theja. "Seismic response control of structures using novel adaptive passive and semi-active variable stiffness and negative stiffness devices." Thesis, 2013. http://hdl.handle.net/1911/72017.

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Current seismic design practice promotes inelastic response in order to reduce the design forces. By allowing the structure to yield while increasing the ductility of the structure, the global forces can be kept within the limited bounds dictated by the yield strength. However, during severe earthquakes, the structures undergo significant inelastic deformations leading to stiffness and strength degradation, increased interstory drifts, and damage with residual drift. The research presented in this thesis has three components that seek to address these challenges. To prevent the inelastic eff

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