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Design of Novel Human Wrist Prostheses Based on Parallel Architectures: Dimensional Synthesis and Kinetostatics [PDF]
BiomimeticsThe human wrist affects the ability to efficiently perform many manipulation tasks. Despite this, most upper-limb prostheses are focused on the hand’s mobility, which makes users compensate for the lost wrist mobility with complex manipulation strategies
Raffaele Di Gregorio
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Hybrid Optimization Based Mathematical Procedure for Dimensional Synthesis of Slider-Crank Linkage
Mathematics, 2021 In this paper, an optimization procedure for path generation synthesis of the slider-crank mechanism will be presented. The proposed approach is based on a hybrid strategy, mixing local and global optimization techniques. Regarding the local optimization
Alfonso Hernández +3 more
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Dimensional Synthesis of a Novel 3-URU Translational Manipulator Implemented through a Novel Method
Robotics, 2022 A dimensional synthesis of parallel manipulators (PMs) consists of determining the values of the geometric parameters that affect the platform motion so that a useful workspace with assigned sizes can be suitably located in a free-from-singularity region
Raffaele Di Gregorio
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Toward Avoiding Misalignment: Dimensional Synthesis of Task-Oriented Upper-Limb Hybrid Exoskeleton
Robotics, 2022 One of the primary reasons for wearable exoskeleton rejection is user discomfort caused by misalignment between the coupled system, i.e., the human limb and the exoskeleton. The article focuses primarily on the solution strategies for misalignment issues.
Sakshi Gupta +2 more
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Machines, 2021 The dimensioning of general-purpose machines such as manipulators involves the solution of a number of preliminary issues. The determination of reference external loads and the identification of machine configurations that give the maximum internal load ...
Raffaele Di Gregorio, Erkan Yilmaz
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Mathematics, 2023 In design matters, mechanisms with deformable elements are a step behind those with rigid bars, particularly if dimensional synthesis is considered a fundamental part of mechanism design.
Alfonso Hernández +3 more
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Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2023 In this paper, a Genetic-Artificial Bee Colony Algorithm (G-ABCA) for mechanism optimization synthesis is proposed to improve the accuracy of the dimensional synthesis of the 4-bar mechanism.
Yifan YANG +3 more
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Dimensional Synthesis of a Minimum Torque Exoskeleton for Spastic Wrist Rehabilitation [PDF]
JES: Journal of Engineering SciencesHand mobility and dexterity are crucial for daily activities, yet conditions such as stroke and wrist-related injuries can severely impair these functions. A prevalent post-stroke condition, spasticity, is characterized by high muscle tone and stiffness,
Ahmed Asker, Hesham A. Abdou, Omar Salah
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CAD-Based Design Optimization of Four-Bar Mechanisms: An Emergency Ventilator Case Study
Designs, 2023 The design optimization of mechanisms is promising as it results in more energy-efficient machines without compromising performance. However, machine builders do not apply state-of-the-art methods, as these algorithms require case-specific theoretical ...
Abdelmajid Ben Yahya +8 more
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Applied Sciences, 2023 Mechanisms have allowed for the automation of complex, repetitive, demanding, or dangerous tasks for humans. Among the different mechanisms, those with a closed kinematic chain are more precise and robust compared to open chain ones, which makes them ...
Alejandro Rodríguez-Molina +5 more
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