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Machines, Volume 12, Issue 4

April 2024 - 70 articles

Cover Story: Hand exoskeletons are potential solutions for enhancing upper extremity function after stroke, yet achieving intuitive control remains challenging. Here, we introduce a hand exoskeleton that features a soft compliant mechanism and a novel force control strategy using digits 3–5 to control an index-thumb pinch grip. The exoskeleton's output impedance and force characteristics were analyzed, followed by a study with unimpaired individuals to assess its intuitiveness during a grip-lift-move task, as well as user preferences regarding force sensitivity and device operation. The strategy proved intuitive, leading to a 30% improvement in task performance. Users also preferred greater force sensitivity and using flexion force from digits 3–5 to drive index finger extension. View this paper
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Articles (70)

  • Article
  • Open Access
8 Citations
1,787 Views
24 Pages

22 April 2024

To solve various reworking and repair problems caused by unqualified bearing product quality inspections, this paper introduces a green re-entrant scheduling optimization method for bearing production shops considering job reworking. By taking into a...

  • Communication
  • Open Access
1 Citations
2,490 Views
12 Pages

22 April 2024

Recently, due to the price fluctuation and supply instability of rare earth mineral resources, there has been a lot of development of electric motors using non-rare-earth permanent magnets. As a result, motors using Dy-free permanent magnets and ferr...

  • Article
  • Open Access
7 Citations
2,440 Views
24 Pages

21 April 2024

Artificial neural networks (ANNs) provide supervised learning via input pattern assessment and effective resource management, thereby improving energy efficiency and predicting environmental fluctuations. The advanced technique of ANNs forecasts dies...

  • Article
  • Open Access
4 Citations
2,272 Views
15 Pages

21 April 2024

When addressing the technical challenges of achieving precise force tracking during the local polishing process of polishing robots, controlling the contact state between the robot and the workpiece surface is essential. To this end, a contact motion...

  • Article
  • Open Access
1 Citations
3,259 Views
43 Pages

21 April 2024

With the rapid expansion of offshore wind capacity worldwide, minimising operation and maintenance requirements is pivotal. Regarded as a low-maintenance alternative to conventional drivetrain systems, direct-drive generators are increasingly commonp...

  • Article
  • Open Access
1,846 Views
28 Pages

21 April 2024

The current network for the dual-task grinding wheel defect semantic segmentation lacks high-precision lightweight designs, making it challenging to balance lightweighting and segmentation accuracy, thus severely limiting its practical application in...

  • Article
  • Open Access
1 Citations
3,753 Views
28 Pages

20 April 2024

Autonomous underwater vehicles (AUVs) are now widely used in both civilian and military applications; however, wireless charging underwater often faces difficulties such as disturbances from ocean currents and errors in device positioning, making pro...

  • Article
  • Open Access
7 Citations
2,456 Views
16 Pages

Research on Dynamic Characteristic Coefficients of Integral Squeeze Film Damper

  • Wei Yan,
  • Jinlong Lu,
  • Jiabao Pan,
  • Jinduo Liu,
  • Chengming Fuyang and
  • Dongdong Ye

20 April 2024

Integral squeeze film damper (ISFD) is a new type of structure that appeared on the basis of traditional squeeze film damper (SFD). Since the oil film in ISFD is a segmented structure without annular flow, the nonlinearity of the oil film force has b...

  • Article
  • Open Access
1 Citations
3,782 Views
11 Pages

Ultra-Compact Orthoplanar Spring via Euler-Spiral Flexures

  • Jacob Sutton,
  • Collin Ynchausti,
  • Kyle Dahl,
  • Spencer P. Magleby,
  • Larry L. Howell and
  • Brian D. Jensen

18 April 2024

Orthoplanar springs are single-component compliant mechanisms that can be fabricated from sheet material and undergo deflection orthogonal to the plane of the mechanism. They are useful in applications where spatial constraints are significant. An Eu...

  • Article
  • Open Access
3 Citations
1,996 Views
24 Pages

Robust Combined Adaptive Passivity-Based Control for Induction Motors

  • Juan Carlos Travieso-Torres,
  • Abdiel Josadac Ricaldi-Morales and
  • Norelys Aguila-Camacho

18 April 2024

The need for industrial and commercial machinery to maintain high torque while accurately following a variable angular speed is increasing. To meet this demand, induction motors (IMs) are commonly used with variable speed drives (VSDs) that employ a...

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Machines - ISSN 2075-1702