Dynamic model reduction using data-driven Loewner-framework applied to thermally morphing structures

Phoenix, Austin A.; Tarazaga, Pablo A.

doi:10.1016/j.jsv.2017.01.039

Cited by 7 publications

(3 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The thermal morphing anisogrid structure is an evolution of the thermal morphing hexapod concept. Both the thermal anisogrid and the thermal hexapod have been previously detailed by the authors (Phoenix and Tarazaga, 2017). The thermal morphing hexapod uses thermal gradients in each of its six legs to provide thermal strain as the actuation mechanism to enable six DOF morphing capabilities.…”

Section: Morphing Concept Explanationmentioning

confidence: 99%

“…A recent example of the hexapod technology can be seen in the implementation of the hexapod system in telescopes (Yang et al., 2015), specifically the Hobby–Eberly telescope (Wedeking et al., 2010; Zierer et al., 2010, 2012). The thermal morphing hexapod, discussed elsewhere by the authors (Phoenix and Tarazaga, 2017), introduces rotational constraints in conjunction with thermal strain actuation to improve the minimum morphing capability. The thermal morphing anisogrid boom concept introduced here expands and improves upon the thermal morphing hexapod concept through the introduction of increased structural coupling and a more complex actuation vector.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Thermal morphing anisogrid smart space structures: Part 1. Introduction, modeling, and performance of the novel smart structural application

Phoenix

Tarazaga

2017

Journal of Vibration and Control

View full text Add to dashboard Cite

To meet the requirements for the next generation of space missions, a paradigm shift is required from current structures that are static, heavy, and stiff to innovative structures that are adaptive, lightweight, versatile, and intelligent. The largest benefit provided by this new structural concept is in the ability to deliver high precision position stability. The conventional high precision structural design uses two decoupled systems to achieve positional stability. First, a high mass structure delivers the effectively infinite stiffness and thermal stability so that no deformations occur under all operational loading conditions. Second, to meet the morphing and on-orbit positional requirements, supplementary mechanisms provide the nano, micro, and macro displacement control required. This paper proposes the use of a novel morphing structure, the thermally actuated anisogrid morphing boom, to meet the design requirements through actively morphing the primary structure in order to adapt to the on-orbit environment and meet both requirements in a consolidated structure. The proposed concept achieves the morphing control through the use of thermal strain to actuate the individual helical members in the anisogrid structure. Properly controlling the temperatures of multiple helical members can introduce six degree of freedom morphing control. This system couples the use of low coefficient of thermal expansion materials with precise thermal control to provide the high precision morphing capability. This concept has the potential to provide substantial mass reductions relative to current methods and meet the high precision displacement requirements of spacecraft systems. This paper will detail the concept itself, demonstrate the modeling procedure, and investigate the design space to quantify the potential of the thermally morphing anisogrid smart structure.

show abstract

Section: Morphing Concept Explanationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal morphing anisogrid smart space structures: Part 1. Introduction, modeling, and performance of the novel smart structural application

Phoenix

Tarazaga

2017

Journal of Vibration and Control

View full text Add to dashboard Cite

show abstract

“…An analytic derivative of the transfer function is required for this structure-preserving method. The Loewner framework itself has also been used for model order reduction [21]. Contrary to the other model order reduction methods summarized in this paragraph, it only utilizes input and output data of a system and does not require access to the sys-tem states or its matrices.…”

Section: Introductionmentioning

confidence: 99%

Automatic model order reduction for systems with frequency-dependent material properties

Aumann

Deckers

Jonckheere

et al. 2022

Computer Methods in Applied Mechanics and Engineering

View full text Add to dashboard Cite

Techniques for approximating a spatially varying Euler-Bernoulli model with a constant coefficient model

Martin

Salehian

2020

Applied Mathematical Modelling

View full text Add to dashboard Cite

Dynamic model reduction using data-driven Loewner-framework applied to thermally morphing structures

Cited by 7 publications

References 33 publications

Thermal morphing anisogrid smart space structures: Part 1. Introduction, modeling, and performance of the novel smart structural application

Thermal morphing anisogrid smart space structures: Part 1. Introduction, modeling, and performance of the novel smart structural application

Automatic model order reduction for systems with frequency-dependent material properties

Techniques for approximating a spatially varying Euler-Bernoulli model with a constant coefficient model

Contact Info

Product

Resources

About