Synthesis and Control of Flexible Systems With Component-Level Uncertainties

Maghami, Peiman G.; Lim, Kyong B.

doi:10.1115/1.3155010

Cited by 5 publications

(3 citation statements)

References 13 publications

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“…As residual mass does not explicitly appear anywhere, it is difficult to introduce these inequality constraints into the LFT framework. The interest of substructure from the uncertainty modeling point of view is adressed in [11,12] for robust control design purposes. In [11], the parametric uncertainty is focused on the interface stiffness.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Modeling and Analysis of Spacecraft With Variable Tilt of Flexible Appendages

Guy¹,

Alazard

Cumer³

et al. 2014

Journal of Dynamic Systems, Measurement, and Control

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This article describes a general framework to generate linearized models of satellites with large flexible appendages. The obtained model is parameterized according to the tilt of flexible appendages and can be used to validate an attitude control system over a complete revolution of the appendage. Uncertainties on the characteristic parameters of each substructure can be easily considered by the proposed generic and systematic multibody modeling technique, leading to a minimal linear fractional transformation (LFT) model. The uncertainty block has a direct link with the physical parameters avoiding nonphysical parametric configurations. This approach is illustrated to analyze the attitude control system of a spacecraft fitted with a tiltable flexible solar panel. A very simple root locus allows the stability of the closed-loop system to be characterized for a complete revolution of the solar panel.

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Section: Introductionmentioning

confidence: 99%

“…The substructure uncertainty is restricted to an unstructured uncertainty to handle high frequency truncated modes. In [12], the parametric uncertainty concerns only frequencies and damping ratios of each component mode. Uncertainty on mode shape (or effective mass) is not directly taken into account.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Modeling and Analysis of Spacecraft With Variable Tilt of Flexible Appendages

Guy¹,

Alazard

Cumer³

et al. 2014

Journal of Dynamic Systems, Measurement, and Control

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“…See [1], [2] for a detailed discussion on the advantage of using DSS. The uses of the DSS concept can be found in areas such as automotive [3], aerospace [4], civil engineering [5]- [8] and robotics [9].…”

Section: A a Brief Introduction To Dynamically Substructured Systemsmentioning

confidence: 99%

Application of Robust Antiwindup Techniques to Dynamically Substructured Systems

Herrmann

Stoten

et al. 2013

IEEE/ASME Trans. Mechatron.

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TITLE Application of robust anti-windup techniques to dynamically substructured systems AUTHORSLi, Guang; Herrmann, Guido; Stoten, D.P.; et al. JOURNAL IEEE/ASME Transactions on Mechatronics DEPOSITED IN ORE May 2013This version available at http://hdl.handle.net/10871/9411 COPYRIGHT AND REUSEOpen Research Exeter makes this work available in accordance with publisher policies. A NOTE ON VERSIONSThe version presented here may differ from the published version. If citing, you are advised to consult the published version for pagination, volume/issue and date of publication Abstract-Dynamically substructured systems (DSS) play an important role in modern testing methods. DSS enables fullsize critical components of a complete system to be tested physically in real-time, whilst the remaining parts of the system run in parallel as a real-time simulation. The performance of DSS testing is influenced by the synchronization of the physical and numerical substructures, which necessitates the design of a DSS controller. Since the testing signal is known and can be assumed to be a perfectly measured disturbance, the DSS control can be viewed as a regulation control problem with measured disturbance attenuation. A potential problem with DSS control arises from actuator saturation, which can be encountered in DSS transfer systems and can significantly influence the testing accuracy. This paper demonstrates the application of a novel robust disturbance rejection anti-windup (AW) technique, to cope with the actuator saturation problem in DSS. Implementation results from a hydraulically-actuated DSS test rig confirm the advantage of using this novel approach over some other existing AW approaches. Furthermore, some specific practical issues are discussed for the AW compensator design, such as the tuning of parameters.

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Port inversions of parametric Two-Input Two-Output Port models of flexible substructures

2023

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Synthesis and Control of Flexible Systems With Component-Level Uncertainties

Abstract: An efficient and computationally robust method for synthesis of component dynamics is

Cited by 5 publications

References 13 publications

Dynamic Modeling and Analysis of Spacecraft With Variable Tilt of Flexible Appendages

Dynamic Modeling and Analysis of Spacecraft With Variable Tilt of Flexible Appendages

Application of Robust Antiwindup Techniques to Dynamically Substructured Systems

Port inversions of parametric Two-Input Two-Output Port models of flexible substructures

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