Structural Control: Past, Present, and Future

Housner, George W.; Bergman, Lawrence A.; Caughey, T. K.; Chassiakos, Anastasios; Claus, Richard O.; Masri, Sami F.; Skelton, Robert E.; Soong, T. T.; Spencer, Billie F.; Yao, James T. P.

doi:10.1061/(asce)0733-9399(1997)123:9(897)

Cited by 1,958 publications

(952 citation statements)

References 302 publications

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“…When compared with alternatives such as tuned mass dampers, AVC technologies make use of much smaller units, provide quicker and more efficient control, have the ability to adapt to changes in the structural dynamic properties and can tackle multiple modes simultaneously [3,4]. However, at present they suffer from initial high installation costs and the need for regular maintenance and a constant power supply.…”

Section: Introductionmentioning

confidence: 99%

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Findings with AVC Design for Mitigation of Human Induced Vibrations in Office Floors

Nyawako

Reynolds

Hudson

2013

Topics in Dynamics of Civil Structures, Volume 4

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This paper looks at AVC studies in three different office floor case studies in past field trials. Some of the estimated modal properties for each of these floors from experimental modal analysis (EMA) tests are shown as well as some selected mode shapes of fundamental modes of vibration. These reflect the variability in their dynamic characteristics by virtue of their different designs and thus the potential for their 'liveliness' under human induced excitation. An overview of some of the controller schemes pursued in the various field trials are mentioned as well as a brief insight being provided into some challenges encountered in their designs and the physical siting of the collocated sensor and actuator pairs used in the field trials. The measure for the vibration mitigation performances in this work is in the form of uncontrolled and controlled point accelerance FRFs which show attenuations in the target modes of vibration between 13-18 dB. These tests also show the variability in vibration mitigation performances between the various controllers.

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Section: Introductionmentioning

confidence: 99%

“…Additional challenges imposed by modelling errors, control and observation spillover influences, time delay issues, changes in structural properties over time as well as control design errors must be addressed in order to achieve AVC systems that offer robustness with respect to the vibration mitigation performance and stability [4,5].…”

Section: Introductionmentioning

confidence: 99%

Findings with AVC Design for Mitigation of Human Induced Vibrations in Office Floors

Nyawako

Reynolds

Hudson

2013

Topics in Dynamics of Civil Structures, Volume 4

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“…The former is thought to be appropriate for identifying the overall dynamic properties of a structural system and usually exhibits stable characteristics. While the latter is important from the viewpoint of enhancement of reliability in structural controlled systems [17] and provides direct information on structural parameters, its development is limited because of the requirement of multiple measurements or the necessity of complicated manipulation. A hybrid approach is sometimes used in which physical parameters are identified from the modal data obtained by the modal-parameter SI.…”

Section: Introductionmentioning

confidence: 99%

“…SI techniques have been studied extensively and many useful accomplishments have been accumulated so far (see, for example, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]). Structural health monitoring for damage detection is also indebted to these SI techniques.…”

Section: Introductionmentioning

confidence: 99%

Noise-bias compensation in physical-parameter system identification under microtremor input

Yoshitomi

Takewaki

2009

Engineering Structures

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A direct method of physical-parameter system identification (SI) is developed in the case of containing noises at both floors above and below a specified story. To investigate the effect of the level of noises on the accuracy of identification, numerical simulations are performed in the frequency domain by generating two stationary random processes with the specified levels of power spectra. When the previous method of physical-parameter SI is applied to the case contaminated by noises at both floors just above and below a specified story, it is difficult to evaluate the true stiffness and damping coefficients depending on the intensity. To overcome this difficulty, a new noise-bias compensation method is proposed which enables one to evaluate the intensity of noises in addition to the identification of story stiffness and damping. This method can be used in the case of small SN (Signal to Noise) ratios such as actual microtremor records. The effectiveness of the proposed method is demonstrated through a numerical example and an experiment using actual microtremor records for a reduced two-story model.

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“…The stochastic optimal control is an important research subject in structural engineering [1]. The mathematics theory of stochastic optimal control has been developed [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Stochastic Optimal Control of Structural Systems

Ying¹

2008

TOAUTOCJ

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Abstract:The stochastic optimal control is an important research subject in structural engineering. Recently, a stochastic optimal nonlinear control method has been proposed based on the stochastic dynamical programming principle and stochastic averaging method. The active and semi-active stochastic optimal control methods have been further developed for structural systems. The control saturation or bound, partial state observation, etc. have been taken into account by the stochastic optimal control. The present paper surveys these research developments.

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Structural Control: Past, Present, and Future

Cited by 1,958 publications

References 302 publications

Findings with AVC Design for Mitigation of Human Induced Vibrations in Office Floors

Findings with AVC Design for Mitigation of Human Induced Vibrations in Office Floors

Noise-bias compensation in physical-parameter system identification under microtremor input

Stochastic Optimal Control of Structural Systems

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