A light-weight passive upper arm assistive exoskeleton based on multi-linkage spring-energy dissipation mechanism for overhead tasks

Hyun, Dong Jin; Bae, KiHyeon; Kim, KyuJung; Nam, Seungkyu; Lee, Dong-Hyun

doi:10.1016/j.robot.2019.103309

Cited by 66 publications

(50 citation statements)

References 18 publications

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“…Then, being each of these vectors in the form f m,CS n = f mx,C S n f my,C S n f mz,C S n T , with m ∈ [1,2] and n ∈ [3,5],…”

Section: Static Modelmentioning

confidence: 99%

“…In recent years, the interest for assistive devices has been increasing due to their proven effectiveness in many cardinal areas, such as medical treatments [1][2][3][4] and industrial manufacturing processes [5][6][7][8]. These advanced mechanical/mechatronic systems are gradually stepping from the research labs to the real life applications, mainly for the rehabilitation of injured or disabled patients [9,10], but also for enhancing the operators performance in many work environments [11].…”

Section: Introductionmentioning

confidence: 99%

“…Within this scenario, the development of portable, lightweight and ergonomic assistive devices seems to be an effective strategy to reduce the risk of injuries in manual manufacturing and also to avoid loss of productivity [5]. Their primary function is to assist people during the execution of specific movements by providing supplementary strength, making it possible, for instance, to deal with greater loads, to compensate for a lack of muscularity and to prevent from excessive fatigue.…”

Section: Introductionmentioning

confidence: 99%

“…Despite these promising solutions, shown in Fig. 1, have not yet been fully integrated in the industrial sector, many pilot studies highlighted their positive effects on the operators, which are well documented in [5,8,11,26,27]. Similarly, also soft exoskeletons (e.g.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Conceptual design and virtual prototyping of a wearable upper limb exoskeleton for assisted operations

Bilancia

Berselli

2021

Int J Interact Des Manuf

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This paper introduces a novel upper limb robotic exoskeleton designed to assist industrial operators in a wide range of manual repetitive tasks, such as tool handling and lifting/moving of heavy items. Due to its reduced size and high maneuverability, the proposed portable device may also be employed for rehabilitation purposes (e.g. as an aid for people with permanent neuromuscular diseases or post-stroke patients). Its primary function is to compensate the gravity loads acting on the human shoulder by means of a hybrid system consisting of four electric motors and three passive springs. The paper focuses on the exoskeleton mechanical design and virtual prototyping. After a preliminary review of the existent architectures and procedures aimed at defining the exoskeleton functional requirements, a detailed behavioral analysis is conducted using analytical and numerical approaches. The developed interactive model allows to simulate both kinematics and statics of the exoskeleton for every possible movement within the design workspace. To validate the model, the results have been compared with the ones achieved with a commercial multibody software for three different operator’s movements.

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“…Then, being each of these vectors in the form f m,CS n = f mx,C S n f my,C S n f mz,C S n T , with m ∈ [1,2] and n ∈ [3,5],…”

Section: Static Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Conceptual design and virtual prototyping of a wearable upper limb exoskeleton for assisted operations

Bilancia

Berselli

2021

Int J Interact Des Manuf

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show abstract

“…The Hyundai Vest Exoskeleton (H-Vest), a light-weight passive upper arm exoskeleton for overhead tasks, is introduced by Hyun et al [ 101 ]. The proposed exoskeleton uses an adjustable spring mechanism to dissipate energy and generate assistive torque whilst the arm is raised during overhead tasks.…”

Section: Results: Emg Applications In Production Engineeringmentioning

confidence: 99%

EMG Characterization and Processing in Production Engineering

Olmo

Domingo

2020

Materials

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Electromyography (EMG) signals are biomedical signals that measure electrical currents generated during muscle contraction. These signals are strongly influenced by physiological and anatomical characteristics of the muscles and represent the neuromuscular activities of the human body. The evolution of EMG analysis and acquisition techniques makes this technology more reliable for production engineering applications, overcoming some of its inherent issues. Taking as an example, the fatigue monitoring of workers as well as enriched human–machine interaction (HMI) systems used in collaborative tasks are now possible with this technology. The main objective of this research is to evaluate the current implementation of EMG technology within production engineering, its weaknesses, opportunities, and synergies with other technologies, with the aim of developing more natural and efficient HMI systems that could improve the safety and productivity within production environments.

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Artificial Helical Screws of 2D Materials with Archimedean Spiral Arrangement

Hwang

Jung

Kim

et al. 2023

Adv Funct Materials

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Helix structures, which are frequently observed in nature, act as versatile structural templates for complex functionalities with asymmetry and anisotropy. However, atomically thin 2D materials, including graphene, transition metal dichalcogenides (TMDs), and MXenes, do not have inherent chirality in their planar geometry and cannot easily form such a structure. This study presents the macroscopic self-assembly of 2D materials for helical screws with an Archimedean spiral arrangement. The naturally triggered spontaneous rotation upon the 1D fiber assembly of 2D materials forms helical screws consisting of multiple helices and perversions. For a clear understanding of the morphological evolution of helical screws, variations in the helical pitch and angle are systematically analyzed considering thermodynamic and kinetic conditions. Subsequently, the influence of spontaneous helix formation on the properties of the 2D assembled fibers is investigated in terms of the solvent-driven actuator performance and electrical and electrothermal properties. The suggested approach provides a new perspective on the directed selfassembly of inherently achiral 2D materials toward chiral helix formation.

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A light-weight passive upper arm assistive exoskeleton based on multi-linkage spring-energy dissipation mechanism for overhead tasks

Cited by 66 publications

References 18 publications

Conceptual design and virtual prototyping of a wearable upper limb exoskeleton for assisted operations

Conceptual design and virtual prototyping of a wearable upper limb exoskeleton for assisted operations

EMG Characterization and Processing in Production Engineering

Artificial Helical Screws of 2D Materials with Archimedean Spiral Arrangement

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