Differential resistance feedback control of a self-sensing shape memory alloy actuated system

D, Josephine Selvarani Ruth; S, Sunjai Nakshatharan; Dhanalakshmi, K.

doi:10.1016/j.isatra.2013.11.002

Cited by 32 publications

(11 citation statements)

References 28 publications

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“…Generic personal events represent summaries of personal experiences that can be highly self-relevant and are considered to be the most common entry for AM retrieval (Conway and Pleydell-Pearce, 2000 ). At the most abstract level, self-knowledge concerns personality traits (Klein, 2010 ), personal attitudes and goals and all other self-concepts that define our identity model (Conway, 2005 ).…”

Section: Introductionmentioning

confidence: 99%

Sex Differences in the Neural Correlates of Specific and General Autobiographical Memory

Compère

Sperduti

Gallarda

et al. 2016

Front. Hum. Neurosci.

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Autobiographical memory (AM) underlies the formation and temporal continuity over time of personal identity. The few studies on sex-related differences in AM suggest that men and women adopt different cognitive or emotional strategies when retrieving AMs. However, none of the previous works has taken into account the distinction between episodic autobiographical memory (EAM), consisting in the retrieval of specific events by means of mental time travel, and semantic autobiographical memory (SAM), which stores general personal events. Thus, it remains unclear whether differences in these strategies depend on the nature of the memory content to be retrieved. In the present study we employed functional MRI to examine brain activity underlying potential sex differences in EAM and SAM retrieval focusing on the differences in strategies related to the emotional aspects of memories while controlling for basic cognitive strategies. On the behavioral level, there was no significant sex difference in memory performances or subjective feature ratings of either type of AM. Activations common to men and women during AM retrieval were observed in a typical bilateral network comprising medial and lateral temporal regions, precuneus, occipital cortex as well as prefrontal cortex. Contrast analyses revealed that there was no difference between men and women in the EAM condition. In the SAM condition, women showed an increased activity, compared to men, in the dorsal anterior cingulate cortex, inferior parietal and precentral gyrus. Overall, these findings suggest that differential neural activations reflect sex-specific strategies related to emotional aspects of AMs, particularly regarding SAM. We propose that this pattern of activation during SAM retrieval reflects the cognitive cost linked to emotion regulation strategies recruited by women compared to men. These sex-related differences have interesting implications for understanding psychiatric disorders with differential sex prevalence and in which one of key features is overgenerality in AM.

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Section: Introductionmentioning

confidence: 99%

Sex Differences in the Neural Correlates of Specific and General Autobiographical Memory

Compère

Sperduti

Gallarda

et al. 2016

Front. Hum. Neurosci.

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“…The system, sensors and actuators are interfaced with a PC installed with Matlab/Simulink with Real Time Toolbox to model and control, via a data acquisition system. The complete design of the system is given in [4]. Table 1 gives the specifications of ball, beam and SMA wires used for experimentation.…”

Section: Experimental Platform -System Designmentioning

confidence: 99%

“…Other advantages offered by the SMA devices are their compliance with harsh environments, the simplicity of their actuation mechanisms, their silent and smooth motion, and their autosensing ability [3]. These factors make SMA a promising candidate among the actuators [4]. Especially SMA actuators are consisdered as interesting candidates for aeronautic applications, particularly for airfoil profile control systems [5].…”

Section: Introductionmentioning

confidence: 99%

“…These factors make SMA a promising candidate among the actuators [4]. Especially SMA actuators are consisdered as interesting candidates for aeronautic applications, particularly for airfoil profile control systems [5].…”

Section: Introductionmentioning

confidence: 99%

“…Robust control approach for a flap positioning based shape memory alloy actuator is addressed by Feng et al [6]. New flap morphing mechanism that can change the wing shape smoothly devised to prevent aerodynamic losses was proposed by Kang et al [5]. Tharayil and Alleyne [7] proposed modeling and control for smart mesoflap aeroelastic control.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fuzzy based sliding surface for shape memory alloy wire actuated classical super-articulated control system

Nakshatharan

Dhanalakshmi

Ruth

2015

Applied Soft Computing

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Circulatory Support: Artificial Muscles for the Future of Cardiovascular Assist Devices

et al. 2023

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Artificial muscles enable the design of soft implantable devices which are poised to transform the way we mechanically support the heart today. Heart failure is a prevalent and deadly disease, which is treated with the implantation of rotary blood pumps as the only alternative to heart transplantation. The clinically used mechanical devices are associated with severe adverse events, which are reflected here in a comprehensive list of critical requirements for soft active devices of the future: low power, no blood contact, pulsatile support, physiological responsiveness, high cycle life, and less‐invasive implantation. In this review, prior art in artificial muscles for their applicability in the short and long term is investigated and critically evaluated. The main challenges regarding the effectiveness, controllability, and implantability of recently proposed actuators are highlighted and the future perspectives for attachment, physiological responsiveness, durability, and biodegradability as well as equitable design considerations are explored.

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Differential resistance feedback control of a self-sensing shape memory alloy actuated system

Cited by 32 publications

References 28 publications

Sex Differences in the Neural Correlates of Specific and General Autobiographical Memory

Sex Differences in the Neural Correlates of Specific and General Autobiographical Memory

Fuzzy based sliding surface for shape memory alloy wire actuated classical super-articulated control system

Circulatory Support: Artificial Muscles for the Future of Cardiovascular Assist Devices

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