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Machines, Volume 11, Issue 8

August 2023 - 77 articles

Cover Story: The paper proposes a new three-dimensional flexible hinge for precision manipulation and positioning where coverage of a large workspace is necessary. The hinge compact configuration results from serially connecting multiple straight- and circular-axis deformable segments in a folded manner. The analytical compliance model, which factors in the allowable stress, is derived based on a simplified hinge geometry. The model predictions are confirmed via finite element simulation and experimental testing of a prototype with maximum relative errors of around 3%. A steel hinge with an outer radius of 0.05 m and a wire diameter of 0.0035 m generates maximum displacements of 0.08 m and can withstand external forces of 70 N. View this paper
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Articles (77)

  • Article
  • Open Access
45 Citations
2,691 Views
18 Pages

17 August 2023

Here, a novel hybrid method of intelligent fault identification within complex mechanical systems was proposed using parallel-factor (PARAFAC) theory and adaptive particle swarm optimization (APSO) for a support vector machine (SVM). The parallel-fac...

  • Article
  • Open Access
13 Citations
5,146 Views
26 Pages

17 August 2023

The methodology for assigning and assessing the surface quality is used at various stages of the product life cycle: during the design and technological preparation of production, the production itself, and during the control (testing) of products. T...

  • Article
  • Open Access
3 Citations
2,383 Views
25 Pages

16 August 2023

Monitoring the machining process is crucial for providing cost-effective, high-quality production and preventing unwanted accidents. This study aims to predict critical machining conditions related to surface roughness and tool breakage in titanium a...

  • Article
  • Open Access
10 Citations
2,696 Views
16 Pages

High-Precision Detection Algorithm for Metal Workpiece Defects Based on Deep Learning

  • Xiujin Xu,
  • Gengming Zhang,
  • Wenhe Zheng,
  • Anbang Zhao,
  • Yi Zhong and
  • Hongjun Wang

16 August 2023

Computer vision technology is increasingly being widely applied in automated industrial production. However, the accuracy of workpiece detection is the bottleneck in the field of computer vision detection technology. Herein, a new object detection an...

  • Article
  • Open Access
14 Citations
3,978 Views
19 Pages

Augmenting Mobile App with NAO Robot for Autism Education

  • A. M. Mutawa,
  • Hanan Mansour Al Mudhahkah,
  • Aisha Al-Huwais,
  • Norah Al-Khaldi,
  • Rayuof Al-Otaibi and
  • Amna Al-Ansari

16 August 2023

This paper aims to investigate the possibility of combining humanoid robots, particularly the NAO robot, with a mobile application to enhance the educational experiences of children with autism spectrum disorder (ASD). The NAO robot, interfaced with...

  • Article
  • Open Access
5 Citations
2,734 Views
42 Pages

Simultaneous Fault Diagnostics for Three-Shaft Industrial Gas Turbine

  • Waleligne Molla Salilew,
  • Syed Ihtsham Gilani,
  • Tamiru Alemu Lemma,
  • Amare Desalegn Fentaye and
  • Konstantinos G. Kyprianidis

16 August 2023

The study focused on the development of -gas turbine full- and part-load operation diagnostics. The gas turbine performance model was developed using commercial software and validated using the engine manufacturer data. Upon the validation, fouling,...

  • Article
  • Open Access
5 Citations
2,401 Views
21 Pages

15 August 2023

This paper presents a synchronous proportional derivative (PD) control method using a time delay estimator (SPD-TDE) for a four-degree-of-freedom (DOF) parallel robot in practice. The proposed control is a method that is developed from a synchronous...

  • Article
  • Open Access
2 Citations
2,348 Views
16 Pages

15 August 2023

With the rapid development of science and technology, high-resolution remote sensing cameras are now widely used in various fields. At the beginning of camera attitude adjustment, residual torque due to state changes can affect platform stability and...

  • Article
  • Open Access
4 Citations
2,244 Views
17 Pages

14 August 2023

Due to the lack of comparative studies between discontinuous pulse-width modulation and model predictive control methods for reducing switching losses in two-level three-phase voltage source inverter, a comparative analysis of a generalized discontin...

  • Article
  • Open Access
1,923 Views
22 Pages

14 August 2023

In this paper, a time-varying formation tracking protocol for second-order multi-sgent systems (MASs) is presented. The time-varying formation considers translation, rotation, and scaling of the geometric pattern that defines the formation. The contr...

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Machines - ISSN 2075-1702Creative Common CC BY license