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Machines, Volume 9, Issue 12

December 2021 - 74 articles

Cover Story: Fuel cells are a key technology for low-emission mobility in the future. An electric air compressor—one of the most important system components and the highest parasitic power consumer —is necessary to supply the fuel cell with the required air mass flow at the fuel cell’s operating pressure. Fuel cell air supply systems often combine a compressor with a downstream turbine to recover energy from the fuel cell exhaust gas and thus improve system efficiency. The objectives of current research and this article are to improve the efficiency and extend the operating range of air supply units. For this purpose, an experimentally validated CFD study was performed on an existing air supply system. The features investigated for the compressor diffuser and turbine nozzles significantly improved the performance. View this paper.
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Articles (74)

  • Article
  • Open Access
16 Citations
4,678 Views
20 Pages

A Robotic Milling System Based on 3D Point Cloud

  • Yongzhuo Gao,
  • Haibo Gao,
  • Kunpeng Bai,
  • Mingyang Li and
  • Wei Dong

15 December 2021

Industrial robots have advantages in the processing of large-scale components in the aerospace industry. Compared to CNC machine tools, robot arms are cheaper and easier to deploy. However, due to the poor consistency of incoming materials, large-sca...

  • Article
  • Open Access
4 Citations
3,053 Views
16 Pages

Performance of Multifunctional Smart PV-Based Domestic Distributed Generator in Dual-Mode Operation

  • Kumar Chandrasekaran,
  • Jasper John Sahayam,
  • Sundarsingh Jebaseelan Somasundaram David Thanasingh,
  • Sripriya Ramalingam,
  • Hady H. Fayek,
  • Nagananthini Ravichandran and
  • Eugen Rusu

15 December 2021

This article briefs about a smart multifunctional single-phase inverter control for a domestic solar photo voltaic (PV)-based distributed generation that can work in both a grid-connected mode and an islanded mode by making the inverter mimic the ope...

  • Article
  • Open Access
4 Citations
6,161 Views
20 Pages

Adaptive Stretch-Forming Process: A Computer Vision and Statistical Analysis Approach

  • Cosmin Constantin Grigoras,
  • Valentin Zichil,
  • Bogdan Chirita and
  • Vlad Andrei Ciubotariu

15 December 2021

An industrial process is defined through its quality of parts and their production costs. Labour-intensive operations must be applied to produce high-quality components with inexpensive resources. Recent development in dedicated software allows the i...

  • Article
  • Open Access
6 Citations
5,727 Views
23 Pages

Design of Mixed-Model Assembly Lines Integrating New Energy Vehicles

  • Qidong Yin,
  • Xiaochuan Luo and
  • Julien Hohenstein

14 December 2021

The automotive industry is undergoing a transformational period where more and more new energy vehicles (NEVs) are being produced and delivered to the market. Accordingly, some new challenges arise during the manufacturing process for car companies....

  • Review
  • Open Access
64 Citations
11,434 Views
54 Pages

10 December 2021

In turning operations, the wear of cutting tools is inevitable. As workpieces produced with worn tools may fail to meet specifications, the machining industries focus on replacement policies that mitigate the risk of losses due to scrap. Several stra...

  • Article
  • Open Access
17 Citations
3,754 Views
27 Pages

9 December 2021

Among the key technologies of Autonomous Underwater Vehicle (AUV) leader–follower formations control, formation reconfiguration technology is one of the main technologies to ensure that multiple AUVs successfully complete their tasks in a compl...

  • Article
  • Open Access
35 Citations
4,439 Views
15 Pages

A Bearing Fault Diagnosis Method Using Multi-Branch Deep Neural Network

  • Van-Cuong Nguyen,
  • Duy-Tang Hoang,
  • Xuan-Toa Tran,
  • Mien Van and
  • Hee-Jun Kang

9 December 2021

Feature extraction from a signal is the most important step in signal-based fault diagnosis. Deep learning or deep neural network (DNN) is an effective method to extract features from signals. In this paper, a novel vibration signal-based bearing fau...

  • Article
  • Open Access
24 Citations
4,542 Views
24 Pages

Adaptive Population NSGA-III with Dual Control Strategy for Flexible Job Shop Scheduling Problem with the Consideration of Energy Consumption and Weight

  • Mingliang Wu,
  • Dongsheng Yang,
  • Bowen Zhou,
  • Zhile Yang,
  • Tianyi Liu,
  • Ligang Li,
  • Zhongfeng Wang and
  • Kunyuan Hu

9 December 2021

The flexible job shop scheduling problem has always been the focus of research in the manufacturing field. However, most of the previous studies focused more on efficiency and ignored energy consumption. Energy, especially non-renewable energy, is an...

  • Article
  • Open Access
9 Citations
9,085 Views
26 Pages

9 December 2021

Underactuated robotic grippers have the advantage of lower cost, simpler control, and higher safety over the fully actuated grippers. In this study, an underactuated robotic finger is presented. The design issues that should be considered for stable...

  • Article
  • Open Access
18 Citations
6,300 Views
14 Pages

9 December 2021

A switched reluctance motor has a very simple structure which becomes its key signature and leads to various advantages. However, because of its double saliency and switching principle, the motor is also known to have a relatively high torque ripple,...

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Machines - ISSN 2075-1702