Smart Precision Manufacturing and Metrology

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "E:Engineering and Technology".

Deadline for manuscript submissions: closed (15 August 2024) | Viewed by 2967

Special Issue Editors


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Guest Editor
State Key Laboratory of Ultra-Precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
Interests: precision engineering; ultra-precision machining technology; precision metrology
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
School of Data Science, City University of Hong Kong, Kowloon Tong, Hong Kong, China
Interests: intelligent metrology; smart manufacturing; applied machine learning; imaging data science

Special Issue Information

Dear Colleagues,

The rapid growth in the demand for advanced products and high precision components for various industries (e.g., photonics, biomedical, semiconductor, advanced optics, aerospace, etc.) have imposed a lot of stringent requirements for their precision manufacturing and measurement in terms of higher accuracy, better surface finish, high geometrical complexity, and construction with difficult-to-machine and new materials, so as to meet the functional requirements of the products and surfaces. Smart precision manufacturing and measurement approaches based on artificial intelligence and advanced sensing technologies are emerging which attempts to achieve self-adaptive adjustment of the machining parameters and cutting conditions for active compensation of the uncertainty and errors generated during precision manufacturing. Moreover, there is a growing demand for the flexible deployment of precision manufacturing and measurement systems in the context of Industry 4.0, which has created great demand for in situ and/or in-process measurement in manufacturing environments when trying to maintain the position of the workpiece for further compensation processes to be run in order to improve the accuracy and efficiency of the precision manufacturing of complex 3D surfaces. This Special Issue focuses on, but is not limited to, the following key topics:

  • Smart precision manufacturing processes;
  • Artificial intelligence in precision metrology;
  • Self-optimization;
  • Intelligent instrumentation;
  • Smart machines and toolings;
  • In situ/on-machine/in-process measurement;
  • Digital twin;
  • Industrial Internet-of-things (IIoT);
  • Machine learning based surface measurement and characterization;
  • Advanced sensing technologies;
  • Real-time/on-line process monitoring;
  • Multi-sensor and data fusion methods.

Prof. Dr. Benny C. F. Cheung
Dr. Jizhou Li
Guest Editors

Manuscript Submission Information

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Keywords

  • smart precision manufacturing
  • smart precision metrology
  • artificial intelligence
  • machine learning
  • advanced sensing
  • self-optimization
  • intelligent measurement and instrumentation

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Published Papers (2 papers)

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Research

15 pages, 5200 KiB  
Article
Self-Calibratable Absolute Modular Rotary Encoder: Development and Experimental Research
by Donatas Gurauskis, Dragan Marinkovic, Dalius Mažeika and Artūras Kilikevičius
Micromachines 2024, 15(9), 1130; https://doi.org/10.3390/mi15091130 - 5 Sep 2024
Viewed by 877
Abstract
Advanced microfabrication technologies have revolutionized the field of reflective encoders by integrating all necessary optical components and electronics into a miniature single-chip solution. Contemporary semiconductor sensors could operate at wide tolerance ranges that make them ideal for integration into compact and lightweight modular [...] Read more.
Advanced microfabrication technologies have revolutionized the field of reflective encoders by integrating all necessary optical components and electronics into a miniature single-chip solution. Contemporary semiconductor sensors could operate at wide tolerance ranges that make them ideal for integration into compact and lightweight modular encoder kit systems. However, in order to achieve the high accuracy of the operating encoder, precise mechanical installation is still needed. To overcome this issue and exploit the full potential of modern sensors, the self-calibratable absolute modular rotary encoder is developed. The equal division average (EDA) method by combining the angular position readings from multiple optical sensors is used to simplify the installation process and ensure the high accuracy of the system. The produced prototype encoder is experimentally tested vs. the reference encoder and the measurement deviations of using different numbers and arrangements of optical sensors are determined. The obtained results show encoder ability to handle the mounting errors and minimize the initial system deviation by more than 90%. Full article
(This article belongs to the Special Issue Smart Precision Manufacturing and Metrology)
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20 pages, 5864 KiB  
Article
Simulation and Experimental Study of a Novel Negative-Pressure Flapper–Nozzle Mechanism
by Aixiang Ma, Heruizhi Xiao, Xihao Yan, Xianghao Kong, Feng Rong, Lu Zhang and Sihai Zhao
Micromachines 2024, 15(1), 55; https://doi.org/10.3390/mi15010055 - 26 Dec 2023
Cited by 1 | Viewed by 1595
Abstract
As the manufacturing industry evolves, the significance of control valve positioners in chemical production escalates. The flapper–nozzle system, the heart of control valve positioners, directly influences the linearity of system control. Presently, studies on the flapper–nozzle system primarily focus on dynamic system modeling [...] Read more.
As the manufacturing industry evolves, the significance of control valve positioners in chemical production escalates. The flapper–nozzle system, the heart of control valve positioners, directly influences the linearity of system control. Presently, studies on the flapper–nozzle system primarily focus on dynamic system modeling and computational fluid dynamics simulations. However, traditional flapper–nozzle mechanisms often fail to achieve linear control objectives. This paper proposes a novel negative-pressure nozzle structure to tackle this issue, combining computational fluid dynamics and experimental methods, and considering gas compressibility during high-speed flow. Both simulation and experimental results suggest that the new structure improves the supply air pressure and broadens the linear pressure output range of the system, showing significant potential for practical applications. Full article
(This article belongs to the Special Issue Smart Precision Manufacturing and Metrology)
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