Review
Engineering, Multidisciplinary
Zurong Qiu, Jie Xue
Summary: This review article summarizes the main test parameters and requirements for high precision reducers, focusing on measurement methods and load technology, with emphasis on scientific research orientations and technical routes.
Editorial Material
Business
JungKun Park, Weon Sang Yoo
Summary: Innovative technologies in Industry 4.0 are transforming retail environments and driving digitalization in the retail process. These technologies offer cost savings and increased revenue for retailers, while also creating more valuable experiences for consumers. Additionally, these technologies have greatly influenced academic research in the field of retailing.
JOURNAL OF RETAILING AND CONSUMER SERVICES
(2022)
Article
Engineering, Electrical & Electronic
Jie Xue, Zurong Qiu, Lin Fang, Yaohuan Lu, Wenchuan Hu
Summary: The article introduces the design of an angular measurement system based on a vertical instrument, using methods such as angular displacement and regular deformation patterns to improve measurement accuracy. It calibrates absolute circular gratings in the instrument and ultimately achieves accurate angle measurement of the tested reducer.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Engineering, Industrial
Michiko Iizuka, Yoko Ikeda
Summary: Innovations using emerging technologies have the potential to enhance productivity and quality of life, but also come with safety risks. Government regulations may struggle to keep up with the rapid pace of technological advancements, creating challenges for firms looking to commercialize emerging technologies. This study explores how innovative regulatory institutions and government roles can help overcome existing safety barriers and facilitate the commercialization of emerging technologies.
Article
Business
Simona Bigerna, Maria Chiara D'Errico, Paolo Polinori
Summary: This study examines how the 4th industrial revolution impacts economic growth and energy security, utilizing a multi-output production function with European Union data and investigating the effects of renewable energy on reducing deviations from the efficient frontier.
TECHNOLOGICAL FORECASTING AND SOCIAL CHANGE
(2021)
Article
Multidisciplinary Sciences
Tolulope Victoria Balogun, Kezia Ruth October, Babatope Adebiyi, Nicolette V. Roman
Summary: The burgeoning 4th Industrial Revolution brings both threats and benefits to humanity. The new technologies introduced by this revolution have been said to diminish humans' capacities like compassion and cooperation. It also triggers challenges such as security, trust, liability and personal data privacy, and widens social and economic gaps. However, some of these claims have been criticized as biased, overlooking important issues. It is crucial to pay attention to the family unit and its coherence and functioning within this technological era.
Article
Chemistry, Analytical
Kaimeng Wang, Yongxiang Fan, Ichiro Sakuma
Summary: We propose a novel approach for robotic industrial insertion tasks using the Programming by Demonstration technique. Our method allows robots to learn a high-precision task by observing human demonstration once, without requiring any prior knowledge of the object. We introduce an Imitated-to-Finetuned approach that generates imitated approach trajectories by cloning the human hand's movements and then fine-tunes the goal position with a visual servoing approach.
Article
Business
Simona Bigerna, Silvia Micheli, Paolo Polinori
Summary: Through a survey of university students, the study found that variables such as family background and age have a positive impact on their willingness to purchase products that meet the principles of the circular economy and fourth industrial revolution technologies. Durability is considered a more preferred feature, and paper-based labels are more widely accepted.
TECHNOLOGICAL FORECASTING AND SOCIAL CHANGE
(2021)
Editorial Material
Engineering, Electrical & Electronic
Santa Di Cataldo, Sukhan Lee, Enrico Macii, Birgit Vogel-Heuser
Summary: The first three industrial revolutions were driven by mechanization, electricity, and information technology respectively. The fourth industrial revolution (Industry 4.0), brought about by the Internet of Things and Services in the manufacturing environment, focuses on smart optimization and computerization of all stages of the manufacturing process.
PROCEEDINGS OF THE IEEE
(2021)
Article
Engineering, Multidisciplinary
Zhen Yu, Yuan Zhang
Summary: An instrument with a vertical layout and a cylindrical structure is designed for comprehensive performance testing of precision reducers, with a focus on diagnosing coupling misalignment through Order spectrum analysis and Power spectrum analysis of the torque signal. Experimental results show that quantitative analysis of misalignment characteristics is easily achieved by analyzing the amplitude of specific frequencies and power of additional components in the torque signal.
Article
Engineering, Mechanical
Siyong Xu, Zhong Wu, Tao Shen
Summary: This paper proposes a high-precision setpoint feedforward control method based on the output redefinition of the extended flexible joint model (EFJM). It effectively eliminates the effects of elasticities in all directions in industrial manipulators and improves control precision.
Article
Automation & Control Systems
Zhicheng Liu, Xilong Liu, Zhiqiang Cao, Xurong Gong, Min Tan, Junzhi Yu
Summary: This article proposes a new calibration method for vision-guided robot system based on error correction matrix, which achieves high precision joint calibration by unifying different manifestations of errors.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Review
Chemistry, Multidisciplinary
Cloudius R. Sagandira, Sinazo Nqeketo, Kanyisile Mhlana, Thembela Sonti, Sibongiseni Gaqa, Paul Watts
Summary: Continuous flow chemistry has revolutionized the laboratory and pharmaceutical industry by integrating, multi-step synthesis, downstream processing, process monitoring, automation, AI, and robotics to create an efficient and smart 21st century API chemical process. The integration of these techniques dramatically improves efficiency, agility, quality, and flexibility in pharmaceutical manufacturing.
REACTION CHEMISTRY & ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
Zhen Yu, Yuan Zhang
Summary: Torque testing is essential for improving the quality of high-precision reducers in industrial robots. A new torque-measurement system was designed for a vertical measuring instrument, with minimized distance from torque transducers to the robot reducer for a shorter measurement chain. The symmetrical system structure enhances overall rigidity, allowing for easy error compensation, and reasonable compensation models based on a neural network were developed for accurate torque measurement. The precision of the torque detector reached 0.1% over the entire range, enabling accurate measurement of input and output torques of the robot reducer.
JOURNAL OF SENSORS
(2021)
Review
Engineering, Manufacturing
Anh-Duc Pham, Hyeong-Joon Ahn
Summary: This paper reviews the importance of precision reducers for machining robots and discusses the methodology for evaluating their performance, highlighting the advantages of cycloid reducers in terms of structural compliance and kinematic accuracy. Additionally, various design issues and applications of cycloid reducers in machining robots are addressed.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2021)
Article
Engineering, Chemical
Anh-Duc Pham, Quang Bang Tao, Pham Cam Nam
Summary: Maintaining the efficiency of solar cell panels by keeping their surface clean is a tedious task. This study proposes a simple and cost-effective method of fabricating a flexible and transparent superhydrophobic film. The film's superhydrophobicity is achieved through a combination of surface roughness and low surface energy. The film demonstrates high mechanical durability and flexibility, making it a potential protective cover for solar cells.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Manufacturing
Trieu Khoa Nguyen, Anh-Duc Pham
Summary: In this study, a new method for investigating the pressure-specific volume-temperature (P-V-T) behaviors of a thermoplastic in melt state was proposed and tested. The coefficients of the modified two-domain Tait equation of state (EOS) in the melt state were obtained through analyzing the volume variation of molten plastic in the barrel of an injection molding machine (IMM) at different temperatures and pressures and conducting nonlinear regression. The simulation results demonstrated the possibility of using an IMM and a hot runner manifold to study the P-V-T properties of thermoplastics under industrial conditions, providing insights into product defects caused by plastic characteristics and offering P-V-T data for new materials.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2023)
Article
Engineering, Manufacturing
Beom-Seok Kim, Seung-Tae Jeong, Hyeong-Joon Ahn
Summary: This paper presents a novel method of predicting the angular transmission error (ATE) of a harmonic drive by measuring noncontact tooth profile and considering 3-dimensional tooth engagement. The ATE errors of 9 harmonic drives assembled with 3 flex splines (F/S) and 3 circular splines (C/S) were predicted and the superiority of the proposed method was verified by experimentally measuring their ATE.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2023)
Article
Multidisciplinary Sciences
Trieu Khoa Nguyen, Kiet Chau Duc, Anh-Duc Pham
Summary: In this study, a new post-processing method was experimentally investigated for improving the surface finish and reducing heat absorption of FDM-3D printed moldcore, aiming to broaden the application scope of FDM. The results showed that chemical treatment with dimethylketone improved surface roughness, while aluminum spray coating reduced heat absorption of ABS filament samples. This low-cost post-processing technique is easily applicable to both lab-scale and manufacturing scales, especially for low-volume production or prototype fabrication.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Manufacturing
Hyeong-Joon Ahn, Ngoc Vu Vo, Shenghe Jin
Summary: The demand for energy-saving, high-efficiency motors is increasing due to the widespread use of electric cars, as well as the emphasis on energy conservation and environmental protection. To address the issues of frictional losses and component failure in electric motor systems, non-contact supporting motors have been developed. This paper proposes a generalized three-phase coil configuration for the radial suspension of a bearingless slice motor, and presents a design problem formulation and a minimal realization method for this configuration. Finite element analysis is conducted to verify the effectiveness of the proposed coil configuration for bearingless motors with various slot numbers.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2023)
Article
Engineering, Mechanical
Trieu Khoa Nguyen, Minh Quang Chau, The-Can Do, Anh-Duc Pham
Summary: The study conducted a numerical and experimental investigation on the geometrical parameters of the blade for a plastic bottle shredder using the Taguchi method and response surface method. The optimal parameters defined through the two-step optimization process showed improved performance in overcoming the limitations of the Taguchi method.
ARCHIVE OF MECHANICAL ENGINEERING
(2021)
Review
Engineering, Manufacturing
Anh-Duc Pham, Hyeong-Joon Ahn
Summary: This paper reviews the importance of precision reducers for machining robots and discusses the methodology for evaluating their performance, highlighting the advantages of cycloid reducers in terms of structural compliance and kinematic accuracy. Additionally, various design issues and applications of cycloid reducers in machining robots are addressed.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Hyeong-Joon Ahn, Byeong Min Choi, Young Hwan Lee, Anh-Duc Pham
Summary: This paper investigates the impact of tolerance and friction on RV reducer through finite element analysis. The study reveals that tolerance mainly decreases torsional rigidity, while friction primarily increases output torque fluctuation.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Seong Jong Yoo, Sinyoung Kim, Kwang-Hwi Cho, Hyeong-Joon Ahn
Summary: Soft sensors have proven themselves as valuable alternatives to physical sensors for gathering critical process information. A data-driven self-sensing technique using recurrent neural network has been proposed for magnetic bearing to compensate for nonlinear characteristics. The proposed method effectively reduces estimation errors and jitter, showing a significant improvement in accuracy.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Seong Jong Yoo, Hyeong-Joon Ahn
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2020)
Article
Engineering, Manufacturing
Kim-Duc Hoang, Hyeong-Joon Ahn
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2018)
Article
Engineering, Manufacturing
Anh Duc Pham, The Linh Tran, Hyeong-Joon Ahn
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2017)
