Thermo mechanical and Control Behaviour of Copper based Shape Memory Alloy Bimorph Actuator towards the Development of Micro Positioning System

Muralidharan, M.; Jayachandran, S. Arul; Yogeshwaran, M.; Shivaani, A. S.; Palani, I. A.

doi:10.14429/dsj.70.15516

Cited by 10 publications

(3 citation statements)

References 29 publications

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“…[6][7] [9]. Investigation on actuation characteristics of SMA bimorph towards flappers for aerial robots can be found in [4] and its design and development in [8].…”

Section: Sma Spring Bimorph Simulationmentioning

confidence: 99%

Robotics, Automation and Non-Destructive Evaluation

2022

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This paper deals with the category of exploratory robotic systems, which is a necessity as the thirst for extraterrestrial survival becomes imminent. Therefore, a robotic system has been proposed along with its conceptual design and motion analysis for its working on the Martian surface. The robotic system consists of two major modules: a robotic sphere and a soft aerial robot (bio-inspired). The robotic sphere will perform the land-based exploration while the aerial robot will navigate through the Martian atmosphere. The soft aerial robot will be encapsulated inside the robotic sphere so that it can be protected from unexpected disastrous events like sand storms which are prone to occur. The system as a whole utilizes rigid components as well as soft actuators. The traversing of a robotic sphere is based on the principle of a shift in the Center Of Mass (COM), while the bio-inspired flapping in the aerial robot is achieved by using Shape Memory Alloy (SMA) springs. Motion analysis has been carried out for both the modules and results are presented. Motion captures at various instances and derived parametric plots are discussed. A result for SMA spring simulation is also included. The specific materials of the components has not been included and can be considered for future studies. The papers opens up a huge domain for soft robotic systems to be used for exploratory purposes. This paper consists of original piece of work, presenting a major piece in writing for the first time.

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“…[6][7] [9]. Investigation on actuation characteristics of SMA bimorph towards flappers for aerial robots can be found in [4] and its design and development in [8].…”

Section: Sma Spring Bimorph Simulationmentioning

confidence: 99%

Robotics, Automation and Non-Destructive Evaluation

2022

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“…Wang, et al 18 proposed a planar-type micro-electromagnetic actuator to achieve a higher electromagnetic force density (0.96 mN/A/ mm 3 ). Muralidharan, et al 19 proposed Shape Memory Alloy (SMA) bimorph actuator, which can be driven under load of 30 mg, 45 mg and 60 mg. unlike MEMS mechanical switches, MEMS solid-state switches have no movable parts. Pennarun et al realized an "ON-OFF" state transition via metal electrothermal fusing 20 .…”

Section: Abbreviationmentioning

confidence: 99%

Research on A Novel Reliable MEMS Bistable Solid State Switch

Lou

Feng

et al. 2022

Def. Sc. J.

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As a result of the unpredictable nature of extreme environments (including temperature, humidity, impact, and other factors), micro-electro-mechanical systems (MEMS) solid-state fuze control modules have an urgent requirement for a MEMS solid-state switch (MEMS-S3). In particular, this switch must remain stable without any energy input after a state transition (i.e., it must be bistable). In this paper, a MEMS bistable solid-state switch (MEMS-bS3) is designed that is based on the concept of producing a micro-explosion. The reliable state switching of the MEMS-bS3 is studied via heat conduction theory and verified via both simulations and experimental methods. The experimental results show that these switches can produce micro-explosions driven by 33 V/47 μF pulse energy. However, the metal film bridge (MFB) structures used in this switch with smaller dimensions (80×20 μm2, 90×30 μm2, and 100×40 μm2) could not enable the switch to realize a reliable state transition, and the state transition rate was less than 40%. When the MFB dimensions reached 120×60 μm2 or 130×70 μm2, the state transition rate exceeded 80%, and the response time was on the μs-scale.

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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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Thermo mechanical and Control Behaviour of Copper based Shape Memory Alloy Bimorph Actuator towards the Development of Micro Positioning System

Cited by 10 publications

References 29 publications

Robotics, Automation and Non-Destructive Evaluation

Robotics, Automation and Non-Destructive Evaluation

Research on A Novel Reliable MEMS Bistable Solid State Switch

Sensorless control of CuAlNi/KAPTON bimorph actuator

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