Comparison of controller design methods for a scaled metro vehicle - flexible structure experiment

Benatzky, Christian; Kozek, Martin; Jörgl, H.P.

doi:10.1109/acc.2007.4282282

Cited by 9 publications

(5 citation statements)

References 16 publications

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“…They produce voltage signals proportional to the average curvature. They are advantageous when only the vibrations of the flexible modes have to be measured and the signal part of the rigid body modes has to be eliminated [10]. The induced voltage v sj in the j th piezoelectric sensor caused by the first two bending modes is given as [19] v…”

Section: Analytical Model Of the Flexible Vehicle Body With Piezoelecmentioning

confidence: 99%

“…where G p is the transfer function of the perturbed model, ∆ a (s) is the normalised additive uncertainty, W a (s) is the weighting function that determines the size of the additive uncertainty over frequency and is chosen based on the principle that the uncertainty is small where the model for controller design is relatively accurate and is large where no information about the system is contained in the model and take the form as follows [10,26]…”

Section: Additive Uncertaintymentioning

confidence: 99%

“…Active structural damping with piezoelectric actuators was applied by Kamada et al [9], and independent H ∞ controllers were designed to suppress the first three flexible modes. Stack actuators mounted in consoles to introduce force/moment pairs to the structure have been proved effective for active damping of the large structure of railway vehicles [10,11,12,13]. Schirrer et al [13] studied the LQG and frequency-weighted H 2 control methods for vibration control of lightweight rail car body structure with piezo stack actuators, whose performances are compared with different sensor concepts.…”

Section: Introductionmentioning

confidence: 99%

“…In the work by Kozek et al [11], robust H ∞ control was applied with µ− synthesis procedure using collocated piezoelectric stack actuators and strain sensors. Benatzky et al [10] showed that a better performance was achieved using µ-synthesis procedure compared to poleplacement combined with Kalman-filter techniques for structural vibration control of a scaled metro vehicle. However, all the aforementioned structural damping strategies mentioned above did not take the suspension system into account.…”

Section: Introductionmentioning

confidence: 99%

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Combined active suspension and structural damping control for suppression of flexible bodied railway vehicle vibration

Zheng

Zolotas

Goodall

2019

Vehicle System Dynamics

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The design trend for future high speed trains is envisaged to be lightweight, rising the cost of structural vibration due to the extra flexibility. In this context, studies have looked into suppression of such vibrations via use of either (conventional actuators) active suspensions or by structural damping via piezoelectric actuators. The addition of extra macro-actuators will highly impact vehicle weight and is subject to location constraints, while the use of only piezoactuators normally does not reach the required force levels for appropriate suppression. However, piezo-actuators provide appropriate complementary action with conventional active suspension. In this paper, we present a decentralised control scheme for suppressing the vertical vibration of the vehicle body, combining active structural damping via frequency-weighted H 2 control and active suspension control using skyhook damping via structured H ∞ synthesis. A vertical side-view model of a flexible-bodied railway vehicle is used for the control study, with the configuration of piezoelectric actuators and sensors determined via structural norms. Stability robustness of the controller is analysed with respect to parametric and dynamic uncertainties using µ analysis techniques. Results illustrate the effectiveness of the proposed control scheme for both flexible and rigid modes while guaranteeing robustness to model uncertainty.

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Section: Analytical Model Of the Flexible Vehicle Body With Piezoelecmentioning

confidence: 99%

Section: Additive Uncertaintymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Combined active suspension and structural damping control for suppression of flexible bodied railway vehicle vibration

Zheng

Zolotas

Goodall

2019

Vehicle System Dynamics

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“…The application of -synthesis robust control theory has presented a new approach to achieve vibration suppression. Design of -synthesis controllers for flexible structures have been demonstrated in various literature (Ohtani et al, 2009;Benatzky et al, 2007;Kumar and Kumar, 2010). Unlike the classic control design algorithms, -synthesis-based controllers are synthesized from the state space model of the system.…”

Section: Introductionmentioning

confidence: 99%

Robust vibration control of flexible panel: modeling and simulation

Banu

Muthalif²

2017

WJE

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Purpose This paper aims to develop a robust controller to control vibration of a thin plate attached with two piezoelectric patches in the presence of uncertainties in the mass of the plate. The main goal of this study is to tackle dynamic perturbation that could lead to modelling error in flexible structures. The controller is designed to suppress first and second modal vibrations. Design/methodology/approach Out of various robust control strategies, μ-synthesis controller design algorithm has been used for active vibration control of a simply supported thin place excited and actuated using two piezoelectric patches. Parametric uncertainty in the system is taken into account so that the robust system will be achieved by maximizing the complex stability radius of the closed-loop system. Effectiveness of the designed controller is validated through robust stability and performance analysis. Findings Results obtained from numerical simulation indicate that implementation of the designed controller can effectively suppress the vibration of the system at the first and second modal frequencies by 98.5 and 88.4 per cent, respectively, despite the presence of structural uncertainties. The designed controller has also shown satisfactory results in terms of robustness and performance. Originality/value Although vibration control in designing any structural system has been an active topic for decades, Ordinary fixed controllers designed based on nominal parameters do not take into account the uncertainties present in and around the system and hence lose their effectiveness when subjected to uncertainties. This paper fulfills an identified need to design a robust control system that accommodates uncertainties.

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