Optimal control-based methodology for active vibration control of pedestrian structures

Pereira, Emiliano; Díaz, Iván M.; Hudson, Emma; Reynolds, Paul

doi:10.1016/j.engstruct.2014.08.046

Cited by 27 publications

(36 citation statements)

References 12 publications

(17 reference statements)

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“…Tests 1 and 2 motivated the second and third mode (Figs. [9][10][11][12][13][14]. This result further confirmed that the third vibration mode was the most critical for dynamic response of the structure when excitations were applied to the central area of the floor, whereas the first vibration mode was not.…”

Section: Natural Frequency and Mode Shapesupporting

confidence: 87%

“…To date, two main categories of dynamic control devices exist, namely, active and passive control devices. According to many researchers [8,[11][12][13], active control devices such as active mass dampers (AMDs) can achieve a better control effect than passive control devices including tuned mass dampers (TMDs) and tuned liquid dampers (TLDs) [14]. However, AMDs present disadvantages, such as high cost, electric energy consumption, and special maintenance.…”

Section: Introductionmentioning

confidence: 99%

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Control of human-induced vibration of an innovative CSBS–CSCFS

Chen

Ren

et al. 2015

Journal of Constructional Steel Research

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Section: Natural Frequency and Mode Shapesupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Control of human-induced vibration of an innovative CSBS–CSCFS

Chen

Ren

et al. 2015

Journal of Constructional Steel Research

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“…Compared with the operations of vibration isolation and reduction in passive control strategies, the way of the active control can achieve greater flexibility and its core idea lies in that by arrangement of sensors and actuators, the actuator's outputs obtained by control algorithms can be cancelled or reduced to a certain extent with the responses of the uncontrolled structures . With the increasing complexity of the engineering structures and high requirement of control effect, the vibration active control technologies may show better applicability and be more conductive to structural design …”

Section: Introductionmentioning

confidence: 99%

Structural time-dependent reliability assessment of the vibration active control system with unknown-but-bounded uncertainties

Wang

et al. 2016

Struct. Control Health Monit.

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Summary The active control system for structural vibration is extremely sensitive to the parametric uncertainty so that more and more concerns of its reliability estimation have been given recently. In view of the insufficiency of the uncertainty information in practical engineering, a non‐probabilistic time‐dependent reliability method that combines the active vibration control theory with interval analysis is proposed in this paper to effectively estimate the dynamic safety of the controlled structures, in which circumstances the unknown‐but‐bounded uncertainties in structural parameters are considered. The uncertain structural responses based on the closed‐loop control are firstly analyzed and embodied by the interval process model. By virtue of the first‐passage theory, an integral procedure of non‐probabilistic time‐dependent reliability analysis of the active control system for structural vibration is then conducted. Two engineering examples and one experimental application are eventually presented to demonstrate the validity and applicability of the methodology developed.

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“…Therefore, to make the structure more representative of a floor structure the modal damping ratios must be increased. AVC has been used in previous research [11][12][13] to control the level of damping, generally with the aim of increasing this as much as possible to minimize vibration responses due to dynamic pedestrian loading. In this case, AVC was used with carefully chosen feedback gains to introduce relatively small increases in damping, which are representative of the changes introduced through the addition of internal furnishings and non-structural partitions.…”

Section: Supplementary Damping Using Avcmentioning

confidence: 99%

Design and Construction of a Reconfigurable Pedestrian Structure

Hudson

Reynolds

2016

Exp Tech

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The field of vibration serviceability of civil structures is becoming an increasingly important research area. There is a need to better understand the dynamics of these structures and how they interact with human occupants in terms of both their sensitivity to vibrations and the ground reaction forces from moving occupants. However, testing real world in-service structures is not always feasible and the resulting access limitations can limit the range of potential experimental investigations. This paper presents the design and construction of a laboratory structure that enables a wide range of experiments to be conducted under closely controlled conditions. The key novelty with this structure is that it can be reconfigured and reassembled to significantly change the modal frequencies, modal masses and mode shapes. In addition, it is shown that active vibration control can be used to control the modal damping ratios and thereby simulate a range of structures from bare steel footbridges to fully-fitted out office floors.

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Optimal control-based methodology for active vibration control of pedestrian structures

Cited by 27 publications

References 12 publications

Control of human-induced vibration of an innovative CSBS–CSCFS

Control of human-induced vibration of an innovative CSBS–CSCFS

Structural time-dependent reliability assessment of the vibration active control system with unknown-but-bounded uncertainties

Design and Construction of a Reconfigurable Pedestrian Structure

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