Active Wave Control of the Axially Moving String: Theory and Experiment

Tan, Chin An; Ying, S.

doi:10.1006/jsvi.2000.3040

Cited by 34 publications

(20 citation statements)

References 35 publications

(38 reference statements)

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“…An analysis in the frequency domain allowed the authors to reduce the maximum amplitudes. An actively controlled string system was considered in [11]. The other interesting results in structural control are presented in [12][13][14].…”

mentioning

confidence: 99%

Smart Suspension System for Linear Guideways

Pisarski

Bajer

2010

J Intell Robot Syst

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This paper presents a new method for the semi-active control of the span system of linear guideways subjected to a travelling load. Two elastic beams are coupled by a set of controlled dampers. The relative velocity of the spans provides an opportunity for efficient control via semi-active suspension. The magnitude of the moving force is assumed to be constant by neglecting inertial forces. The response of the system is solved in modal space. The full analytical solution is based on the power series method and can be given over an arbitrary time interval. The control strategy is formulated by using bilinear optimal control theory. As a result, bang-bang controls are taken into account. The final solution is obtained as a numerical mean value. Several examples demonstrate the efficiency of the proposed method. The controlled system outperforms passive solutions over a wide range. Due to the simplicity of its design, the presented solution should be interesting to engineers.

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confidence: 99%

Smart Suspension System for Linear Guideways

Pisarski

Bajer

2010

J Intell Robot Syst

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“…In the formulation of the corresponding optimization problem, we will use the state-space representation introduced in Section II-B. Let y j denotes jth component of the state vector defined in (5). We consider again the matrix Q(t) defined as in (9).…”

Section: Distributed Averagingmentioning

confidence: 99%

Collaborative control for structures subjected to traveling loads

Pisarski

2015

2015 IEEE Conference on Control Applications (CCA)

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The paper presents a novel collaborative control method that adapts the structures subjected to traveling loads. The adaptation is realized by changes of the damping of the structure's supports. The control objective is to provide smooth passage of vehicles and to extend the safe life-time of the carrying structures. The control method utilizes a distributed architecture where the local controllers communicate along the circular graph. The proposed controller is validated experimentally. It is simple for practical realization and exhibits the performance comparable to that provided by the optimal centralized strategies presented in [1] and [2].

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“…It was shown that such methods are able to attenuate all vibration modes [3][4]. Vibration waves can either be absorbed or trapped in a confined region of within the continuum [5].…”

Section: Introductionmentioning

confidence: 98%

Control of longitudinal or torsional vibration in a drill pipe/BHA using infinite dimensional techniques

Agrawal

Mao

Downton

et al. 2011

2011 IEEE International Conference on Control Applications (CCA)

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The goal of this paper is to investigate how the vibration characteristics within a drill pipe can be modulated using (i) active control laws, or (ii) appropriate choices of impedance properties within the continuum. It is assumed in the paper that the continuum could have multiple sources of inputs, some acting as disturbance and some as control. The continuum was assumed to have generalized impedance at the two boundaries. In the paper, the structure of the transfer function is derived. Then, control laws are developed using the infinite dimensional models to actively modulate vibration characteristics within the continuum. Multi-sensor implementation of these control laws is then investigated which would provide these sought performances without requiring knowledge of the boundary impedance. Additionally, the role of boundary impedance on the performance of the control law is investigated. The concepts proposed in this paper are illustrated by simulations.

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Active Wave Control of the Axially Moving String: Theory and Experiment

Cited by 34 publications

References 35 publications

Smart Suspension System for Linear Guideways

Smart Suspension System for Linear Guideways

Collaborative control for structures subjected to traveling loads

Control of longitudinal or torsional vibration in a drill pipe/BHA using infinite dimensional techniques

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