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Actuators, Volume 11, Issue 6

June 2022 - 32 articles

Cover Story: This paper presents a novel cam-based variable stiffness actuator (VSA). It significantly differs from its counterparts in that the external load is distributed on its two motors with a small difference. It is a feasible method to improve VSA’s output power, especially in compact joints, such as rehabilitation devices. The stiffness adjustment involves a spring-balanced crank-slider mechanism with a variable-length base frame. Its tunable node is the common node for force decomposition, synthesis, stiffness adjustment, and position control by setting it as the common groove of two differential variable-pitch cams. The pitch curve synthesis method is put forward to optimize load distribution. The dual motors can work together closely in the same direction against the output load. View this paper
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Articles (32)

  • Article
  • Open Access
2 Citations
3,388 Views
14 Pages

Energy-Aware Model Predictive Control of Assembly Lines

  • Francesco Liberati,
  • Chiara Maria Francesca Cirino and
  • Andrea Tortorelli

20 June 2022

This paper presents a model predictive approach to the energy-aware control of tasks’ execution in an assembly line. The proposed algorithm takes into account both the need for optimizing the assembly line operations (in terms of the minimizati...

  • Article
  • Open Access
9 Citations
4,797 Views
16 Pages

Electromechanical Performance of Biocompatible Piezoelectric Thin-Films

  • S. Ranjan Mishra,
  • Soran Hassani Fard,
  • Taha Sheikh and
  • Kamran Behdinan

19 June 2022

The present study analyzed a computational model to evaluate the electromechanical properties of the AlN, BaTiO3, ZnO, PVDF, and KNN-NTK thin-films. With the rise in sustainable energy options for health monitoring devices and smart wearable sensors,...

  • Article
  • Open Access
12 Citations
3,962 Views
16 Pages

19 June 2022

Soft pneumatic actuators offer great advantages compared to rigid ones, particularly due to their compliant nature, which allows them to adapt to uncertainties in the environment. As such, they enable human-safe interactions and are often applied to...

  • Review
  • Open Access
20 Citations
11,604 Views
56 Pages

Biorobotics: An Overview of Recent Innovations in Artificial Muscles

  • Matthew Craddock,
  • Emmanuel Augustine,
  • Sam Konerman and
  • Minchul Shin

17 June 2022

In this overview of recent developments in the field of biorobotics we cover the developments in materials such as the use of polyester fabric being used as artificial skin and the start of whole new ways to actuate artificial muscles as a whole. In...

  • Article
  • Open Access
4 Citations
2,723 Views
16 Pages

17 June 2022

Model order reduction techniques can be used during the operation phase of a product to generate virtual sensor outputs and enable diagnosis and monitoring systems. This contribution shows an approach with the example of an active magnetic bearing. T...

  • Article
  • Open Access
15 Citations
8,772 Views
14 Pages

A Design of Biomimetic Prosthetic Hand

  • Sakura Narumi,
  • Xiansong Huang,
  • Jongho Lee,
  • Hiroyuki Kambara,
  • Yousun Kang and
  • Duk Shin

16 June 2022

Many patients with upper limb defects desire myoelectric prosthetic hands, but they are still not used for some reasons. One of the most significant reasons is its external appearance, which has the discomfort caused by the structural difference betw...

  • Article
  • Open Access
13 Citations
5,509 Views
14 Pages

15 June 2022

An exosuit is a wearable robot that assists the muscular strength of a human that wears it by using multiple wires with similar functions to human muscles. This study focuses on the development of a series elastic tendon actuator (SETA) for the actua...

  • Article
  • Open Access
13 Citations
3,321 Views
17 Pages

15 June 2022

The traditional magnetorheological (MR) damper subject to the limited space has shortcomings such as small damping force, narrow dynamic range and low adaptability. In this study, a new MR damper with folded resistance gaps and bending magnetic circu...

  • Article
  • Open Access
6 Citations
3,031 Views
20 Pages

15 June 2022

In this paper, an opposing jet is applied to the space shuttle arc leading edge and the lifting body cone leading edge in the hypersonic condition of the rarefied flow field. The DSMC numerical algorithm is used to simulate and analyze the underlying...

  • Article
  • Open Access
1 Citations
3,034 Views
17 Pages

Sound Driven Actuator Using Helmholtz Resonance

  • Takeru Niwano and
  • Mitsuharu Matsumoto

15 June 2022

Repairing cracks in the concrete of a building is very important to ensure the safety of a nuclear power plant. However, repair work in areas with very strong radiation is very difficult. Many robots have been proposed to solve this problem. However,...

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Actuators - ISSN 2076-0825