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Dynamic Re-scheduling: The Key to Efficient Zero Defect manufacturing - A Comprehensive Study 1

33rd International conference on Flexible Automation and intelligent manufacturing

作者： Psarommatis, Foivos May, Gokan Azamfirei, Victor Koutrakis, Nikolaos-Stefanos Univ Oslo Dept Informat SIRIUS Oslo Norway Zerofect Zug Switzerland Univ North Florida Sch Engn Jacksonville FL USA Politecn Milan Dept Mech Engn Milan Italy Fraunhofer Inst Prod Syst & Design Technol IPK Berlin Germany

ISBN: (数字)9783031744853

ISBN: (纸本)9783031744846;9783031744853

Zero Defect manufacturing (ZDM) is the latest approach for quality management (QM). It utilizes the full potential of Industry 4.0 technologies, and in return, can provide more efficient QM, achieving higher quality rates and using fewer resources, leading to sustainable manufacturing. manufacturing systems are characterized by high uncertainty, and therefore, disruptive events will always be present, alongside inspection, preventive, or predictive maintenance, for example. To this extent, production rescheduling has become an inevitable and crucial implementation. To maintain costs and productivity within reasonable bounds while offering high-quality products, it is essential to utilize a dynamic scheduling tool, which can reschedule operations when these disruptive events occur. The current research effort is concentrated on determining the key parameters that affect the rescheduling problem and defining the implications of such an approach to the entire production system. The proposed approach will be validated through a series of simulations and comparisons with current practices.

关键词： Rescheduling Zero Defect manufacturing ZDM Dynamic Scheduling Quality Management (QM) Simulation

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Joint production, maintenance, and quality control in manufacturing systems with imperfect inspection

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JOURNAL OF manufacturing systems 2024年 77卷 848-858页

作者： El Cadi, Abdessamad Ait Gharbi, Ali Dhouib, Karem Artiba, Abdelhakim Univ Polytech Hauts de France CNRS UMR 8201 LAMIH F-59313 Valenciennes France Univ Quebec Ecole Technol Super Syst Engn Dept Prod Syst Design & Control Lab Montreal PQ Canada Univ Tunis Ecole Natl Super Ingenieurs Tunis Lab Intelligent Robot Reliabil & Signal & Image Pr Tunis Tunisia INSA Hauts de France F-59313 Valenciennes France

This paper proposed a joint production control, preventive maintenance, and inspection policy for manufacturing systems prone to failures, quality degradation and quality inspection errors. A stochastic mathematical model is developed taking into account all possible scenarios contingent to imperfect quality inspection errors, while integrating age-based preventive maintenance, dynamic production rates, and sampling inspection plans. The model accounts for both Type I and Type ii inspection errors and optimizes the joint policy key parameters, including safety stock levels, preventive maintenance thresholds, and inspection sample size. The model is validated using a 95 % confidence interval obtained from experiments with simulation model that imitates the studied system dynamics when it is controlled by the proposed joint policy. A sensitivity analysis is carried out to give a deeper comprehension of the problem and the complex interactions at play. The study explores the impact of system's parameters on the new joint policy that accounts for inspection errors, thereby contributing valuable insights to the field of manufacturing systems management. Ultimately, a comprehensive comparative analysis seeks to establish the superiority of the proposed joint policy over existing ones documented in the literature. The proposed policy consistently outperformed alternative approaches, with an overall cost reduction of up to 87 %.

关键词： Production control Maintenance policy Quality inspection Inspection errors

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Human-Centric design of Automated Production Lines Using Virtual Reality Tools and Human Data Analysis 32nd

Human-Centric Design of Automated Production Lines Using Vir...

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32nd International conference on Flexible Automation and intelligent manufacturing

作者： Grandi, Fabio Khamaisi, Riccardo Karim Morganti, Alessio Peruzzini, Margherita Pellicciari, Marcello Univ Modena & Reggio Emilia Dept Engn Enzo Ferrari Modena Italy Univ Modena & Reggio Emilia Dept Sci & Methods Engn Reggio Emilia Italy

ISBN: (纸本)9783031381645;9783031381652

The 4.0 revolution is leading to increasingly automated, flexible, and intelligent manufacturing systems that require greater complexity to manage during maintenance and process control. In this context the optimization of the human machine interaction plays a crucial important role in the design of modern industrial systems. Virtual Reality (VR) offers realistic simulation environments where users can be involved to replicate specific human tasks, detecting and solving problems before they occur. The paper proposes a human-centric digital design methodology that integrates VR technologies with human data analysis tools to support the design or redesign of complex industrial systems. Different wearable devices have been used to collect data about physical and mental user conditions to provide an early assessment of the operators' workload, while comparing different design solutions into the virtual space. An industrial use case related to the redesign of packaging automated machines was used to validate the proposed method and tools: a preliminary correlation between physiological parameters and machines interactions was found.

关键词： Human-centred design Virtual Reality Human data analysis ergonomics and human factors digital simulation

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Load Matching design and Multi-objective Optimization of Helicopter EHA 20th

Load Matching Design and Multi-objective Optimization of Hel...

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20th Chinese intelligent systems conference

作者： Wang, Chao Sun, Mingwei Fu, Jian Beihang Univ Sch Mech Engn & Automat Beijing 100191 Peoples R China

ISBN: (纸本)9789819786565;9789819786541;9789819786534

In recent years, more-electric technology has been gradually introduced into the aviation field, which shows higher maintainability than the traditional hydraulic system. In this paper, a load matching method is proposed for the preliminary design of helicopter EHA. Firstly, reasonably match the power curve and the load curve to ensure the output capacity is sufficient;secondly, determine the optimization design process by establishing the reasonable estimation models;and finally calculate all the parameters based on the optimal solution combination, which is generated by the multi-objective optimization algorithm.

关键词： Electro-hydrostatic actuator Load matching Parameter design NSGA-ii algorithm

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Static Modeling of the Stiffness and Contact Forces of Rolling Element Eccentric Drives for Use in Robotic Drive systems

Static Modeling of the Stiffness and Contact Forces of Rolli...

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2024 International conference on intelligent Robots and systems

作者： Fritsch, Simon Handler, Stefan Otto, Michael Vogel-Heuser, Birgit Zimmermann, Markus Stahl, Karsten Tech Univ Munich Munich Germany TUM Sch Engn & Design Dept Mech Engn Munich Germany Munich Inst Robot & Machine Intelligence MIRMI Munich Germany Gear Res Ctr FZG Inst Machine Elements Munich Germany Inst Automat & Informat Syst AIS Munich Germany Lab Prod Dev & Lightweight Design LPL Munich Germany

ISBN: (纸本)9798350377712;9798350377705

Rolling element eccentric drives promise to be an easy-to-manufacture and performant gear system for robotic actuators. They share characteristics with other eccentric drives, such as strain wave and cycloidal drives, but use rolling elements instead of an eccentric gear. They offer reduced manufacturing complexity and costs by using readily available standard parts. Little research into rolling element eccentric drives is available, and their characteristics are still underexplored. This work uses a contact-based model to investigate the previously unknown stiffness of rolling element eccentric drives. Such calculation methods are well established for structurally similar components, such as cycloidal drives and roller bearings, and provide a high-level and computationally efficient model. Good stiffness models are critical for accurately predicting robotic actuator behavior and enabling better control of robotic systems. Additionally, the proposed model is used to calculate the contact forces under load occurring in rolling element eccentric drives. Contact forces are critical to calculating a drive's load capacity, lifetime, and efficiency and serve as the foundation for further research. The mathematical description of the proposed model is derived, and the stiffness of a representative rolling element eccentric drive is calculated. Different manufacturing techniques, characterized by tolerance levels and material choices, are compared. Irrespective of manufacturing precision, similar stiffness curves result for drives made of steel, but higher contact forces result from less precise manufacturing. The stiffness of drives made from 3D printed plastic is considerably lower than that of drives made from steel. Additionally, the stiffness of rolling element eccentric drives is compared to similar eccentric drives, and a comparable twist-over-torque curve is shown.

关键词： Roller bearings

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design of an ISO 23247 Compliant Digital Twin for an Automotive Assembly Line 7

Design of an ISO 23247 Compliant Digital Twin for an Automot...

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IEEE 7th International conference on Industrial Cyber-Physical systems (ICPS)

作者： Melo, Victoria Barbosa, Jose Mota, Goncalo de la Prieta, Fernando Leitao, Paulo Inst Politecn Braganca Res Ctr Digitalizat & Intelligent Robot CeDRI Campus Santa Apolonia P-5300253 Braganca Portugal Inst Politecn Braganca Lab Associado Sustentabilidade & Tecnol Reg Monta Campus Santa Apolonia P-5300253 Braganca Portugal Volkswagen Autoeuropa P-2954024 Quinta Do Anjo Portugal Univ Salamanca BISITE Digital Innovat Hub Edificio Multiusos I D I Salamanca 37007 Spain

ISBN: (纸本)9798350363029;9798350363012

The integration of Industry 4.0 (I4.0) technologies is transforming various society sectors, and particularly the manufacturing sector, promoting a digital transformation that fosters smart and interconnected systems. The Digital Twin (DT) acts as a key component in the digital transformation landscape and its integration with I4.0 technologies paves the way for the implementation of Zero Defect manufacturing strategies. A spotlight on the automotive industry underscores the power of DT applications for real-time defect detection and improvement of product quality and process efficiency. However, the proper DT implementation, contributing to their integration and interoperability, requires the compliance with standards and reference architectures. Having this in mind, this paper describes the design of a DT architecture compliant with the ISO 23247 standard and aligned with the RAMI 4.0 to cover the dimensional measurement process comprising inspection stations placed in the body shop area of an automotive assembly line. This implementation enables the real-time and early identification of defects along the assembly process, allowing to prevent their occurrence at a single stage and their propagation to downstream processes.

关键词： Digital Twin ISO 23247 Zero Defect manufacturing RAMI 4.0

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From CAD to URDF: Co-design of a Jet-Powered Humanoid Robot Including CAD Geometryy

From CAD to URDF: Co-Design of a Jet-Powered Humanoid Robot ...

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2024 International conference on intelligent Robots and systems

作者： Vanteddu, Punith Reddy Nava, Gabriele Bergonti, Fabio L'Erario, Giuseppe Paolino, Antonello Pucci, Daniele Ist Italiano Tecnol Artificial & Mech Intelligence Genoa Italy Univ Manchester Sch Comp Sci Manchester Lancs England Univ Naples Federico II Dept Ind Engn Naples Italy

ISBN: (纸本)9798350377712;9798350377705

Co-design optimization strategies usually rely on simplified robot models extracted from CAD. While these models are useful for optimizing geometrical and inertial parameters for robot control, they might overlook important details essential for prototyping the optimized mechanical design. For instance, they may not account for mechanical stresses exerted on the optimized geometries and the complexity of assembly-level design. In this paper, we introduce a co-design framework aimed at improving both the control performance and mechanical design of our robot. Specifically, we identify the robot links that significantly influence control performance. The geometric characteristics of these links are parameterized and optimized using a multi-objective evolutionary algorithm to achieve optimal control performance. Additionally, an automated Finite Element Method (FEM) analysis is integrated into the framework to filter solutions not satisfying the required structural safety margin. We validate the framework by applying it to enhance the mechanical design for flight performance of the jet-powered humanoid robot iRonCub.

关键词： Anthropomorphic robots

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Human Factors in the design of Advanced Quality Inspection systems in the Era of Zero-Defect manufacturing 32nd

Human Factors in the Design of Advanced Quality Inspection S...

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32nd International conference on Flexible Automation and intelligent manufacturing

作者： Azamfirei, Victor Psarommatis, Foivos Lagrosen, Yvonne Malardalen Univ Sch Innovat Design & Engn Hamngatan 15 S-63220 Eskilstuna Sweden Univ Oslo Ctr Scalable Data Access SIRIUS Gaustadalleen 23B N-0373 Oslo Norway

ISBN: (纸本)9783031381645;9783031381652

manufacturing companies around the world are under constant pressure to perform effectively and sustainably. Incidental processes, such as Quality Inspection (QI), are needed to achieve Zero-Defects manufacturing (ZDM). This study aimed to identify the Human Factors and Ergonomics (HF&E) in the design of advanced automation, QI systems, and ZDMthrough selected papers and empirical observations. Our presented model is built around the six main dimensions, i.e., top management, manager (project owner), designers, engineers (internal and suppliers), and operators. The commitment of top management, the openness of the manager, the design-friendly nature of the technological system, and the constant updating of knowledge by engineers are important for the success of ZDM. Researchers need to be familiar with cognitive and organisational human factors to align theory with specific cases. Operators face physical and cognitive challenges, and their environment and health must be considered for their successful contribution to the design of advanced QI systems.

关键词： Zero-Defect manufacturing (ZDM) Quality Inspection (QI) Human Factors and Ergonomics (HF&E)

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High-precision closed-loop motion chassis system for intelligent logistics trolley 3

High-precision closed-loop motion chassis system for intelli...

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3rd International conference on Advanced manufacturing Technology and manufacturing systems, ICAMTMS 2024

作者： Zhou, Dan Zhou, Yingchun School of Intelligent Manufacturing Panzhihua University Sichuan Panzhihua China School of Intelligent Manufacturing Panzhihua University Sichuan Panzhihua China

ISBN: (纸本)9781510681804

This paper is a high-precision closed-loop motion chassis based on Arduino and programmed with C language. According to the application requirements, the chassis can realize omni-directional rotation movement in the field and accurate fixed-point parking and other work. By using advanced sensing technology and control algorithm, the motion accuracy and efficiency of the car can be improved. In this paper, the mechanical design scheme, hardware circuit design scheme and how to realize high-precision closed-loop movement of car chassis are described in detail, which provides reference for preparing logistics car competition and learning automatic control. © 2024 SPIE.

关键词： Automobiles

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MPS System Verification Based on Digital Twins intelligent Technology 11th

MPS System Verification Based on Digital Twins Intelligent T...

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11th International conference on Signal and Information Processing, Network and Computers, ICSINC 2023

作者： Sun, Ximiao Beijing University of Technology Beijing100124 China

ISBN: (纸本)9789819721153

As a key enabling technology for implementing the concept of intelligent manufacturing, digital twin can reflect the entire life cycle process of physical entities and effectively solve the information-physical fusion problem in intelligent manufacturing. It has been widely applied in multiple fields such as product design, manufacturing, visualization monitoring, and intelligent operation and maintenance. However, currently there is a lack of research on the cross-application of digital twin and modular production systems (MPS systems), which cannot meet the needs of intelligent development of MPS systems. This article completes the mutual mapping of physical and virtual models through the collaborative operation of the electromechanical integration concept design function and control program in Siemens NX UG software. The verification of the MPS system and the construction of the digital twin system have been achieved, which aims to reduce costs and increase efficiency in the design and operation of the MPS production system. This article provides a complete design process and solution for an MPS intelligent control system based on digital twins, which can serve as a reference for future MPS intelligent control system designs. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Product design

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