Active Control of Smart Shape Memory Alloy Composite Flapper for Aerodynamic Applications

Khan, Suhel; Sai, Yeswanth; Prabu, S.S. Mani; Palani, I. A.; Umarikar, Amod C.

doi:10.1016/j.procs.2018.07.017

Cited by 8 publications

(3 citation statements)

References 8 publications

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“…Later, composite actuators were developed with the deposition of thin film SMA; hence, only few articles are being reported within this period. Moreover, as per the literature, only PID control has been implemented for the SMA bimorph actuator (Shivaani et al, 2017; Khan et al, 2018 Muralidharan et al, 2020) for the maximum displacement of 1 mm only; the responses exhibit overshoot and steady state oscillations; and also displays steady state error for higher displacement. There is a need to study and determine an improved performance of the bimorph actuator with suitable advanced controllers.…”

Section: Introductionmentioning

confidence: 99%

Sensorless control of CuAlNi/KAPTON bimorph actuator

Vetriselvi

Kaliaperumal

Geetha

et al. 2023

Journal of Vibration and Control

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The recent development in smart material-based actuators are composite structures of thin film integrated SMA/PI bimorph in the view of actuator cum sensing in electromechanical systems for medical, robotics, and aerospace application. The purpose of the present work on integrated SMA/PI bimorph is to reveal their ability to perform as actuators and sensors and study on control characteristics for soft robotic, positioning, and valve applications. Vide this research paper, the SMA bimorph actuator [thin film SMA (CuAlNi)/polyimide (Kapton) bimorph] is used as actuator cum sensor for position control. Proposed a Proportional Derivative combined Variable Structure Controller (PD-VSC) to control the displacement by Joule heating actuation in two ways, which are sensor-based control and self-sensing control. From the control characteristics in from of tracking and disturbance rejection, it is concluded that the integrated CuAlNi/Kapton bimorph can be successfully implemented for soft robotic, positioning, and valve applications.

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Section: Introductionmentioning

confidence: 99%

Sensorless control of CuAlNi/KAPTON bimorph actuator

Vetriselvi

Kaliaperumal

Geetha

et al. 2023

Journal of Vibration and Control

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“…Ni 49 Ti 51 ) is one of the most exciting alloys exhibiting excellent superelastic strains accompanied by the martensitic transformation, making this alloy useful for practical applications [20]. Especially in reinforced polymer materials, the shape memory wires are used to change the mechanical behavior or change the matrix's physical shape [18,[21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Fe–Mn–Ga shape memory glass-coated microwire with sensing possibilities

Galdun¹,

Vidyasagar²,

Hennel³

et al. 2021

J. Phys. D: Appl. Phys.

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The structural phase transformation in a non-stoichiometric shape memory Fe 42.8 Mn 27.6 Ga 29.6 Heusler glass-coated microwire was experimentally observed using indirect magnetic, permeability, and electrical resistance measurements. While the temperature dependence of magnetization revealed hysteresis of magnetization during the heating and cooling process, magnetic hysteresis loops point to the change in the direction of the easy magnetization axis of the low-and high-temperature phase. Additionally, the unusual behavior of the permeability and electrical resistance measurements are in good agreement with the magnetic measurements. The x-ray diffraction profile measured at room temperature revealed the coexistence of a high-temperature L2 1 phase (a = 5.88 Å) and low-temperature phase with the L1 2 structure (a = 3.71 Å) and can be considered as another proof of the shape memory effect that is expected in the Fe-Mn-Ga-based Heusler alloys. In the presented glass-coated microwire, it is not only possible to shift the transformation temperature with the external magnetic field, but from its initial permeability value, it is possible to determine whether the alloy has undergone the structural transformation. Therefore, the presented Fe-Mn-Ga-based glass-coated microwire may be considered a suitable candidate for microactuators with sensory capabilities.

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“…SMA wires are used in reinforced polymer material in order to change the mechanical behavior of composite structure by electrical activation of the wires (Cohades and Michaud, 2018;Khan et al, 2018). SMA wires are embedded in reinforced polymer composite to either tune the mechanical properties of matrix or change the physical shape of the matrix (Pieczyska et al, 2009;Tobushi et al, 2009Tobushi et al, , 2011.…”

Section: Introductionmentioning

confidence: 99%

Flexural and free vibration control of smart epoxy composite beams using shape memory alloy wires actuator

Zardian

Moslemi

Mozafari

et al. 2020

Journal of Intelligent Material Systems and Structures

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Shape memory alloys are increasingly used in numerous smart engineering structures. This study experimentally investigates static flexural and free vibration characteristics of composite beams reinforced with shape memory alloy wires. The key to this study is using shape memory alloy fibers as a means for influencing and tuning the static and dynamic responses of structures. A series of static three-point bending and modal experiments is performed to capture the capability of shape memory alloy wires in controlling the static and dynamic responses of a reinforced beam. Static and dynamic behaviors of the fiber-reinforced beam with different volumetric fiber fractions are examined. Before heat excitation, increasing the number of shape memory alloy wires leads to higher beam stiffness and lower beam deflection. However, with both heat activation and the higher number of shape memory alloy wires, beam deflection is significantly reduced. The modal vibration tests demonstrated that when shape memory alloy wires are not activated, the magnitude of natural frequencies slightly decreases by increasing the number of shape memory alloy wires. However, with heat excitation, the higher number of shape memory alloy wires, in contrast, increases the magnitude of natural frequencies. Furthermore, the higher number of activated shape memory alloy wires shows to predominantly increase the magnitude of higher modes of vibration rather than lower modes.

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Active Control of Smart Shape Memory Alloy Composite Flapper for Aerodynamic Applications

Cited by 8 publications

References 8 publications

Sensorless control of CuAlNi/KAPTON bimorph actuator

Sensorless control of CuAlNi/KAPTON bimorph actuator

Fe–Mn–Ga shape memory glass-coated microwire with sensing possibilities

Flexural and free vibration control of smart epoxy composite beams using shape memory alloy wires actuator

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