| 1. |
- Akillioglu, Hakan, et al.
(författare)
-
Evolvable production systems and impacts on production planning
- 2011
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Production planning and control strategies have been changing in line with the constant change on product and customer requirements, under the light of technological and scientific advancements. Production systems which are based on mass production became obsolete in time hence companies, being profit oriented, are in need of new solutions towards mass customization to handle rapidly changing market conditions. To deal with this issue, production systems and production planning strategies have to be complementing each other. In this paper Evolvable Production Systems and its compatibility to Just in Time (JIT) Production compared to Material Requirement Planning (MRP) will be discussed.
|
|
| 2. |
- Alsterman, Henric, et al.
(författare)
-
Definitions, Limitations and Approaches to Evolvable Assembly System Platforms
- 2005
-
Ingår i: Emerging Solutions for Future Manufacturing Systems. - Boston : Kluwer Academic Publishers. - 0387228284 - 0387228292 ; , s. 367-378
-
Konferensbidrag (refereegranskat)abstract
- Europe, as most other OECD areas, is confronted with major potential opportunities in the decades to come. Although often portrayed as threats, the symptoms being denoted in the European economy are, in fact, part of a shift in knowledge and technology infrastructures created by these trends. These current challenges being faced by manufacturing companies nowadays require production systems to become ever more responsive and agile. This is particularly relevant to micro-products, since manual assembly becomes impossible, rendering outsourcing strategies less effective if not deliberately negative. Furthermore, traditional approaches to R&D in this field no longer suffice to cope with the challenges imposed since these imply new business methods, continuous technological evolution, and the increased tendency towards networks of enterprises.To meet such demands there is a need for new rapidly deployable and affordable (economically sustainable) microassembly systems based on reconfigurable, modular concepts that would allow continuous system evolution and seamless reconfiguration. Furthermore, as will be detailed later, one of the required foundations to sustainable assembly system concepts lies within a new way of thinking and working: a methodology that could integrate the various aspects related to the life cycle of the production systems, with particular focus being placed on the re-engineering phase. This article will present some definitions, clarify the basic approach, and outline the serious requirements being posed by such a paradigm: Evolvable Assembly Systems.
|
|
| 3. |
|
|
| 4. |
- Bagchi, Satyajit, et al.
(författare)
-
Application of ZUPT-Aided INS to Indoor Localization of Tightening Tools
- 2018
-
Ingår i: Procedia Manufacturing. - : Elsevier B.V.. - 2351-9789. ; , s. 565-569
-
Konferensbidrag (refereegranskat)abstract
- This paper presents the application of zero velocity detectors in the field of indoor positioning for industrial tightening tools particularly in tandem with an extended Kalman filter to achieve reliable estimates in position. Inertial measurement units are promising devices to use in positioning systems. Data has been collected from IMU while moving in a predefined trajectory on a tightening test rig and post-processed in MATLAB using the implemented algorithms and the results are presented. They indicate that the error accumulation can be effectively controlled to 25 cm/min for the commercial grade IMU and 15 cm/min for the navigation grade IMU.
|
|
| 5. |
- Barata, José, et al.
(författare)
-
A Multiagent Based Control Approach for Evolvable Assembly Systems
- 2005
-
Ingår i: 2005 3rd IEEE International Conference on Industrial Informatics, 2005. - 0780390946 - 9780780390942 ; , s. 478-483
-
Konferensbidrag (refereegranskat)abstract
- The work presented in this paper intends to clarify how multiagents can be an adequate paradigm to solve the challenges imposed by Evolvable Assembly Systems (EAS). The article will therefore show that a multiagent architecture based on coalitions of assembly modules (CoBASA) can be successfully used to implement the control architecture for EAS.
|
|
| 6. |
|
|
| 7. |
- Barata, José, et al.
(författare)
-
Evolvable Assembly and Exploiting Emergent Behaviour
- 2006
-
Ingår i: IEEE International Symposium on Industrial Electronics. - 1424404967 - 1424404975 - 9781424404964 ; , s. 3353-3360
-
Konferensbidrag (refereegranskat)abstract
- This paper details the recent development within evolvable assembly systems, including ontological, methodological, and application developments. This paradigm was recently proposed as an answer to the requirements faced by assembly companies in the current world of business and technological changes. EAS, as with other similar approaches, offers great opportunities for attaining true agility and cost- effective, stepwise automation. EAS does imply that the manner in which we develop and create projects for the development of assembly systems are radically changed, assuming a more synthesis-based approach.
|
|
| 8. |
- Barata, José, et al.
(författare)
-
Evolvable Assembly Systems : A Development Roadmap
- 2006
-
Ingår i: IFAC Proceedings Volumes. - : Elsevier BV. - 1474-6670. - 9783902661043
-
Konferensbidrag (refereegranskat)abstract
- A new paradigm, the Evolvable Assembly Systems (EAS), was recently proposed. This paradigm provides a complete new view on how assembly systems should be designed and developed. Because the control system is one of the key aspects for a successful implementation of EAS this paper proposes a development roadmap to pinpoint directions of research on how control systems should be developed. It is expected that with this information the industry can envision the potential benefits in terms of competitiveness of this approach; still, this paper is especially targeted to motivate researchers from self-organisation and distributed assembly systems to engage in this endeavour together. In particular, topics on self-organisation, emergence, dynamical systems, and distributed artificial intelligence can be the backbone of truly self-adapting assembly systems. In fact EAS seems to be a really demanding and grounded case-study for the referred research communities.
|
|
| 9. |
- Barata, J, et al.
(författare)
-
Evolvable Production Systems : Enabling Research Domains
- 2007
-
Konferensbidrag (refereegranskat)abstract
- The goal of this paper is to describe the research on Evolvable Production Systems (EPS) in the context of Reconfigurable Manufacturing Systems (RMS), and to briefly describe a multiagent based control solution. RMS, Holonic and EPS concepts are briefly described and compared. Novel inspiration areas and concepts to solve the demanding requirements set by RMS, such as artificial life and complexity theory, are described. Finally, the multiagent based control solution is described as the underlying infrastructure to support all future development in EPS, using concepts such as emergence and self-organisation.
|
|
| 10. |
- de Giorgio, Andrea, Dr Eng., et al.
(författare)
-
Assessing the influence of expert video aid on assembly learning curves
- 2021
-
Tidskriftsartikel (refereegranskat)abstract
- Since the introduction of the concept of learning curves in manufacturing, many articles have been applying the model to study learning phenomena. In assembly, several studies present a learning curve when an operator is trained over a new assembly task; however, when comparisons are made between learning curves corresponding to different training methods, unaware researchers can show misleading results. Often, these studies neglect either or both the stochastic nature of the learning curves produced by several operators under experimental conditions, and the high correlation of the experimental samples collected from each operator that constitute one learning curve. Furthermore, recent studies are testing newer technologies, such as assembly animations or augmented reality, to provide assembly aid, but they fail to observe deeper implications on how these digital training methods truly influence the learning curves of the operators. This article proposes a novel statistical study of the influence of expert video aid on the learning curves in terms of assembly time by means of functional analysis of variance (FANOVA). This method is better suited to compare learning curves than common analysis of variance (ANOVA), due to correlated data, or graphical comparisons, due to the stochastic nature of the aggregated learning curves. The results show that two main effects of the expert video aid influence the learning curves: one in the transient and another in the steady state of the learning curve. The transient effect of the expert video aid, where the statistical tests suffer from a high variance in the data, appears to be a reduction in terms of assembly time for the first assemblies: the operators seem to benefit from the expert video aid. As soon as the steady state is reached, a slower and statistically significant effect appears to favor the learning processes of the operators who do not receive any training aid. Since the steady state of the learning curves represents the long term production efficiency of the operators, the latter effect might require more attention from industry and researchers.
|
|
| 11. |
- de Giorgio, Andrea, Dr Eng., et al.
(författare)
-
Assessing the influence of expert video aid on assembly learning curves
- 2022
-
Ingår i: Journal of manufacturing systems. - : Elsevier BV. - 0278-6125 .- 1878-6642. ; 62, s. 263-269
-
Tidskriftsartikel (refereegranskat)abstract
- Since the introduction of the concept of learning curves in manufacturing, many articles have been applying the model to study learning phenomena. In assembly, several studies present a learning curve when an operator is trained over a new assembly task; however, when comparisons are made between learning curves corresponding to different training methods, unaware researchers can show misleading results. Often, these studies neglect either or both the stochastic nature of the learning curves produced by several operators under experimental conditions, and the high correlation of the experimental samples collected from each operator that constitute one learning curve. Furthermore, recent studies are testing newer technologies, such as assembly animations or augmented reality, to provide assembly aid, but they fail to observe deeper implications on how these digital training methods truly influence the learning curves of the operators. This article proposes a novel statistical study of the influence of expert video aid on the learning curves in terms of assembly time by means of functional analysis of variance (FANOVA). This method is better suited to compare learning curves than common analysis of variance (ANOVA), due to correlated data, or graphical comparisons, due to the stochastic nature of the aggregated learning curves. The results show that two main effects of the expert video aid influence the learning curves: one in the transient and another in the steady state of the learning curve. The transient effect of the expert video aid, where the statistical tests suffer from a high variance in the data, appears to be a reduction in terms of assembly time for the first assemblies: the operators seem to benefit from the expert video aid. As soon as the steady state is reached, a slower and statistically significant effect appears to favor the learning processes of the operators who do not receive any training aid. Since the steady state of the learning curves represents the long term production efficiency of the operators, the latter effect might require more attention from industry and researchers.
|
|
| 12. |
- de Giorgio, Andrea, Dr Eng., et al.
(författare)
-
Citation review of Human-Machine Collaboration in Virtual Reality for Adaptive Production Engineering by de Giorgio et al.
- 2024
-
Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- This article argues that despite a citation review is a rarely used research tool, this can be very useful to assess the impact of new research topics, both from the future research direction and the bibliometric perspectives. An explorative study is presented around the research area marked as Industry 4.0 with the conference paper mentioned in the title of this citation review. Even though the given reference paper is relatively recent, there are already twenty-seven citations listed among three different scholar databases. These are Google Scholar, ResearchGate and Semantic Scholar. In light of this, the article provides a bibliometric confirmation and analysis for the progression of the line of research adopted by de Giorgio et al. in the exploration of non-traditional methods using virtual reality technology and human-robot collaboration for adaptive applications in Industry 4.0. Furthermore, it represents a model for the authors’ self-development and an example of an unconventional approach to scientific work that may help improve related bibliometric research and scholar database strategies to index new articles and topics in the future.
|
|
| 13. |
- de Giorgio, Andrea, et al.
(författare)
-
Human-machine Collaboration in Virtual Reality for Adaptive Production Engineering
- 2017
-
Ingår i: Procedia Manufacturing. - : Elsevier BV. - 2351-9789. ; 11, s. 1279-1287
-
Tidskriftsartikel (refereegranskat)abstract
- This paper outlines the main steps towards an open and adaptive simulation method for human-robot collaboration (HRC) in production engineering supported by virtual reality (VR). The work is based on the latest software developments in the gaming industry, in addition to the already commercially available hardware that is robust and reliable. This allows to overcome VR limitations of the industrial software provided by manufacturing machine producers and it is based on an open-source community programming approach and also leads to significant advantages such as interfacing with the latest developed hardware for realistic user experience in immersive VR, as well as the possibility to share adaptive algorithms. A practical implementation in Unity is provided as a functional prototype for feasibility tests. However, at the time of this paper, no controlled human-subject studies on the implementation have been noted, in fact, this is solely provided to show preliminary proof of concept. Future work will formally address the questions that are raised in this first run.
|
|
| 14. |
- de Giorgio, Andrea, Dr Eng. 1987-
(författare)
-
Introducing a procedural knowledge model for enhancing industrial process adaptiveness
- 2021
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Industrial processes are mainly based on procedural knowledge that must be continually elicited from experienced operators and learned by novice operators. In the context of Industry 4.0, machines already play a key role in knowledge transfer; however, new models and methods based on the artificial intelligence advances of the past few years need to be developed and applied. The future of human-machine collaboration is not limited to physical applications, but it has the potential to harness both the strength of human skills, experience and the computational power provided by the surrounding machines for truly adaptive industrial processes. The winning recipe is a balance between letting humans exploit their inherent experience and letting machines integrate the missing skills to preserve production standards. This work introduces a procedural knowledge model to be used for the design of industrial and scientific adaptive processes and it paves the way to transforming human-machine collaboration into an efficient solution to make industrial and scientific processes resilient to a constantly changing world.
|
|
| 15. |
- de Giorgio, Andrea, Dr Eng., et al.
(författare)
-
Measuring the effect of automatically authored video aid on assembly time for procedural knowledge transfer among operators in adaptive assembly stations
- 2021
-
Ingår i: International Journal of Production Research. - : Informa UK Limited. - 0020-7543 .- 1366-588X.
-
Tidskriftsartikel (refereegranskat)abstract
- Can automatically-authored videos of industrial operators help other operators to learn procedural tasks? This question is relevant to the advent of the industrial internet of things (IIoT) and Industry 4.0, where smart machines to help human operators rather than replacing them, in order to benefit from the best of humans and machines. The study considers an industrial ecosystem where procedural knowledge (PK) is quickly and effectively transferred from one operator to another. Assembly tasks are procedural in nature and present a certain complexity that still does not allow machines and their sensors to capture all the details of the operations. Especially if the assembly operation is adaptive and not fixed in terms of assembly sequence plan. In order to help the operators, videos of other operators executing the complex procedural tasks can be automatically recorded and authored from machines. This study shows by means of statistical design and analysis of experiments that expert aid, provided before each subassembly, can reduce the assembly time of an untrained operator, whereas automatically authored video aids can transfer PK but producing an opposite effect on the assembly time. Therefore, hybrid training methods are still necessary and trade-offs have to be considered. Managerial insights from the results suggest an unneglectable impact of the choice to digitize industrial operations too early. The experimental studies presented can act as guidelines for the correct statistical testing of innovative solutions in industry.
|
|
| 16. |
- de Giorgio, Andrea, Dr Eng., et al.
(författare)
-
Towards online reinforced learning of assembly sequence planning with interactive guidance systems for industry 4.0 adaptive manufacturing
- 2021
-
Ingår i: Journal of manufacturing systems. - : Elsevier BV. - 0278-6125 .- 1878-6642. ; 60, s. 22-34
-
Tidskriftsartikel (refereegranskat)abstract
- Literature shows that reinforcement learning (RL) and the well-known optimization algorithms derived from it have been applied to assembly sequence planning (ASP); however, the way this is done, as an offline process, ends up generating optimization methods that are not exploiting the full potential of RL. Today’s assembly lines need to be adaptive to changes, resilient to errors and attentive to the operators’ skills and needs. If all of these aspects need to evolve towards a new paradigm, called Industry 4.0, the way RL is applied to ASP needs to change as well: the RL phase has to be part of the assembly execution phase and be optimized with time and several repetitions of the process. This article presents an agile exploratory experiment in ASP to prove the effectiveness of RL techniques to execute ASP as an adaptive, online and experience-driven optimization process, directly at assembly time. The human-assembly interaction is modelled through the input-outputs of an assembly guidance system built as an assembly digital twin. Experimental assemblies are executed without pre-established assembly sequence plans and adapted to the operators’ needs. The experiments show that precedence and transition matrices for an assembly can be generated from the statistical knowledge of several different assembly executions. When the frequency of a given subassembly reinforces its importance, statistical results obtained from the experiments prove that online RL applications are not only possible but also effective for learning, teaching, executing and improving assembly tasks at the same time. This article paves the way towards the application of online RL algorithms to ASP.
|
|
| 17. |
- Dias Ferreira, Joao, et al.
(författare)
-
Challenges and properties for bio-inspiration in manufacturing
- 2014
-
Ingår i: Technological Innovation for Collective Awareness Systems. - Berlin, Heidelberg : Springer Berlin Heidelberg. ; , s. 139-148, s. 139-148
-
Konferensbidrag (refereegranskat)abstract
- The increasing market fluctuations and customized products demand have dramatically changed the focus of industry towards organizational sustainability and supply chain agility. Such critical changes inevitably have a direct impact on the shop-floor operational requirements. In this sense, a number of innovative production paradigms emerged, providing the necessary theoretical background to such systems. Due to similarities between innovative modular production floors and natural complex systems, modern paradigms theoretically rely on bio-inspired concepts to attain the characteristics of biological systems. Nevertheless, during the implementation phase, bio-inspired principles tend to be left behind in favor of more traditional approaches, resulting in simple distributed systems with considerable limitations regarding scalability, reconfigurable ability and distributed problem resolution.This paper analyzes and presents a brief critical review on how bio-inspired concepts are currently being explored in the manufacturing environment, in an attempt to formulate a number of challenges and properties that need to be considered in order to implement manufacturing systems that closely follow the biological principles and consequently present overall characteristics of complex natural systems.
|
|
| 18. |
- Hasan, Baha, 1977-
(författare)
-
An Ontological Approach to support Knowledge Sharing between Product Design and Assembly Process Planning (APP)
- 2017
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Modern manufacturing organizations have to cope with several critical issues arising from the need for mass customization such as short product life-cycles, an increasing number of product variants and frequently changing customer requirements. One of the main factors that could aid overcoming those challenges is the use of information and communication technology (ICT) applications over a collaborative manufacturing environment, in which all stakeholders share and exchange knowledge across different manufacturing domains and applications. However, the use of ICT applications over a collaborative manufacturing environment is limited at the domain level by semantic conflicts arising from the use of different ways to describe the same objects and facts arising from different conceptualizations. Similarly, ICT usage is limited on the application level by interoperability problems arising from diverse heterogeneity between different ICT applications and tools.This research presents a semantic approach to support knowledge sharing within the assembly domain. More specifically, this research is focusing on capturing and sharing assembly design knowledge and integrating the assembly design domain and the Assembly Process Planning (APP) domain. Assembly design and APP are very important engineering domains for successful manufacturing system design, which requires an efficient collaborative environment for best utilization of the assembly resources. However, though these domains represent different perspectives in understanding of the same concepts, both domains use different software applications, which might cause interoperability issues.In this thesis, a novel integration approach has been proposed; this approach is composed of two stages: the first stage includes modelling and recognition of assembly knowledge semantics from SolidWorks (SW) CAD software by using SolidWorks’ Application Programmable Interface (SW-API). The second stage includes sharing the recognized assembly knowledge semantics by using a knowledge-based system in the form of a three-layer ontology architecture which provides a common semantic base to support knowledge sharing across assembly design and APP both on the domain and the application level. Each ontology layer shares a set of concepts from the most generic level to the most specialized level. The foundation ontology layer represents the general key concepts in the assembly design and APP domains. More specialized assembly design concepts and APP concepts are represented both in the domain ontology layer, and the application ontology layer. In the latter, concepts related to SolidWorks CAD software and to assembly robotic devices are represented.
|
|
| 19. |
- Kenger, Patrick, et al.
(författare)
-
Modular Product Verifications Based on Design for Assembly
- 2005
-
Ingår i: International Forum on Design for Manufacture and Assembly. - Providence - Warwick, Rhode Island, USA.
-
Konferensbidrag (refereegranskat)abstract
- The desire to conquer markets through advanced product design and trendy business strategies are still predominant approaches in industry today. In fact, product development has acquired an ever more central role in the strategic planning of companies, and it has extended its influence to R&D funding levels as well. It is not surprising that many national R&D project frameworks within the EU today are dominated by product development topics, leaving production engineering, robotics, and systems on the sidelines. The reasons may be many but, unfortunately, the link between product development and the production processes they cater for are seldom treated in depth. The issue dealt with in this article relates to how product development is applied in order to attain the required production quality levels a company may desire, as well as how one may counter assembly defects and deviations through quantifiable design approaches.It is recognized that product verifications (tests, inspections, etc.) are necessary, but the application of these tactics often result in lead-time extensions and increased costs. Modular architectures improve this by simplifying the verification of the assembled product at module level. Furthermore, since Design for Assembly (DFA) has shown the possibility to identify defective assemblies, it may be possible to detect potential assembly defects already in the product and module design phase. The intention of this paper is to discuss and describe the link between verifications of modular architectures, defects and design for assembly. The paper is based on literature and case studies; tables and diagrams are included with the intention of increasing understanding of the relation between poor designs, defects and product verifications.
|
|
| 20. |
|
|
| 21. |
|
|
| 22. |
- Maffei, Antonio, 1982-, et al.
(författare)
-
Evaluation of the potential impact of fully-immersive virtual reality on production engineering curricula
- 2019
-
Ingår i: IEEE AFRICON Conference. - : Institute of Electrical and Electronics Engineers Inc..
-
Konferensbidrag (refereegranskat)abstract
- Virtual Reality, or VR, is a family of technologies defined in the 60s that aims at mimicking reality through computers with different purposes. VR is usually classified according to the level of user immersion achieved. VR has attracted increasing attention between academic and practitioners during the last decade due to technological progresses that achieved high reliability and relatively low cost. VR potential to visualize information, replace physical presence and stimulate interaction make of this technology an essential part in the toolbox of future engineers. Higher Education Institution must align their curricula to fulfill this purpose. At the same time VR can be a support to enhance the learning process itself. This work analyses the impact of fully-immersive VR technology on an average production engineering curricula based on the educational offer at KTH Royal Institute of Technology in Stockholm, Sweden. The results show that VR has a great potential to shape the production engineering curricula in the coming years both in term of content and design of the learning experiences.
|
|
| 23. |
- Maffei, Antonio, et al.
(författare)
-
From Flexibility to Evolvability : ways to achieve Self-Reconfigurability and Full-Autonomy
- 2009
-
Ingår i: 9th IFAC Symposium on Robot Control, SYROCO '09. - Gifu, Japan. ; , s. 74-79
-
Konferensbidrag (refereegranskat)abstract
- In the field of production engineering the past paradigms have focused on the concept of system flexibility; introducing both automation and computer science at shop floor level. Nevertheless their limits in approaching some fundamental areas, such as modularization and control issues, make them unsuitable for tackling the challenges in the manufacturing scenario of today. In this paper the past approaches with their underlining weaknesses have been reviewed, which leads up to the proposal of a methodology for the creation of a manufacturing system that is based on the Evolvable Paradigm. The salient points of this scheme are: the process oriented approach to modularization, the link between the development of the system and the design of the product. Fundamental requirements in pursuing these issues are to deeply study the processes in order to represent them at the hardware level, and to develop a distributed control system to handle emergent behaviour. The potential economical benefits that come from the Evolvable Paradigm include that automation can be a sustainable approach both large enterprises and for SMEs.
|
|
| 24. |
- Mahmood Reza, Khabbazi, 1972-, et al.
(författare)
-
Assembly Feature Data Instance Modeling : Prototype Implementation and Outputs
- 2017
-
Ingår i: 2017 INTERNATIONAL CONFERENCE ON MECHANICAL, SYSTEM AND CONTROL ENGINEERING (ICMSC). - : IEEE. - 9781509065301 ; , s. 343-347
-
Konferensbidrag (refereegranskat)abstract
- This paper introduces the assembly feature data schema instance modeling to pre-examine the schema functionality and output- as the preliminary step for data modeling. In order to link assembly with product design, it is essential to determine which entities of product design are involved at the automated assembly planning and operations. It is possible to assign meaningful attributes (assembly features) to the part model entities in a systematic and structured way. Using object-oriented design, the assembly feature data structure and its relationships are modeled. As a part of the research on product and assembly system data integration within the evolvable production system platform, the instance models for proposed assembly feature data structure provide a deeper understanding and error reduction that might possibly occur at the development of the database. Moreover through instance modeling, the assembly feature data query output format from the database prototype is simulated. An industrial assembly model example with its 3DPart models is chosen to demonstrate the realized assembly feature data set with string data type. The models support the desired simplicity at the database prototype implementation. The output format envisions the interoperability factor between product models and the assembly planning systems.
|
|
| 25. |
- Mahmood Reza, Khabbazi, 1972-, et al.
(författare)
-
Module-based Quality System Functionality Evaluation in Production Logistics
- 2016
-
Ingår i: Journal of Industrial Engineering and Management. - : OmniaScience. - 2013-8423 .- 2013-0953. ; 9:2, s. 310-329
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose: This paper addresses a comprehensive modeling and functionality evaluation of amodule-based quality system in production logistics at the highest domain abstract level ofbusiness processes.Design/methodology/approach: All domain quality business processes and quality datatransactions are modeled using BPMN and UML tools and standards at the business process anddata modeling. A modular web-based prototype is developed to evaluate the models addressingthe quality information system functionality requirements and modularity in production logisticsthrough data scenarios and data queries.Findings: Using the object-oriented technique in design at the highest domain level, theproposed models are subject further development in the lower levels for the implementing case.The models are specifically able to manipulate all quality operations including remedy and controlin a lot-based make-to-order production logistics system as an individual module.Practical implications: Due to the specification of system as domain design structure, allproposed BPMs, data models, and the actual database prototype are seen referential if not asolution as a practical “to-be” quality business process re-engineering template. Originality/value: this paper sets out to provide an explanatory approach using differentpractical technique at modeling steps as well as the prototype implementation.
|
|
| 26. |
- Mahmood Reza, Khabbazi, 1972-, et al.
(författare)
-
Object-oriented design of product assembly feature data requirements in advanced assembly planning
- 2018
-
Ingår i: Assembly Automation. - : Emerald Group Publishing Limited. - 0144-5154 .- 1758-4078. ; 38:1, s. 97-112
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose - This paper introduces a schema for the product assembly feature data in an object-oriented and module-based format using Unified Modeling Language (UML). To link production with product design, it is essential to determine at an early stage which entities of product design and development are involved and used at the automated assembly planning and operations. To this end, it is absolutely reasonable to assign meaningful attributes to the parts' design entities (assembly features) in a systematic and structured way. As such, this approach empowers processes such as motion planning and sequence planning in assembly design. Design/methodology/approach - The assembly feature data requirements are studied and definitions are analyzed and redefined. Using object-oriented techniques, the assembly feature data structure and relationships are modeled based on the identified requirements as five UML packages (Part, three-dimensional (3D) models, Mating, Joint and Handling). All geometric and non-geometric design data entities endorsed with assembly design perspective are extracted or assigned from 3D models and realized through the featured entity interface class. The featured entities are then associated (used) with the mating, handling and joints features. The AssemblyFeature interface is realized through mating, handling and joint packages related to the assembly and part classes. Each package contains all relevant classes which further classify the important attributes of the main class. Findings - This paper sets out to provide an explanatory approach using object-oriented techniques to model the schema of assembly features association and artifacts at the product design level, all of which are essential in several subsequent and parallel steps of the assembly planning process, as well as assembly feature entity assignments in design improvement cycle. Practical implications - The practical implication based on the identified advantages can be classified in three main features: module-based design, comprehensive classification, integration. These features help the automation and solution development processes based on the proposed models much easier and systematic. Originality/value - The proposed schema's comprehensiveness and reliability are verified through comparisons with other works and the advantages are discussed in detail.
|
|
| 27. |
|
|
| 28. |
- Neves, Pedro, et al.
(författare)
-
Performance Assessment in Self-organising Mechatronic Systems : A First Step towards Understanding the Topology Influence in Complex Behaviours
- 2014
-
Ingår i: <em>IFIP AICT, Technological Innovation for Collective Awareness Systems</em>. - Berlin, Heidelberg : Springer Berlin Heidelberg. ; , s. -84, s. 75-84
-
Konferensbidrag (refereegranskat)abstract
- The research and development of self-organising mechatronic systems has been a hot topic in the past 10 years which conducted to very promising results in the close past. The proof of concept attained in IDEAS project [1] that plug&produce can be achieved in these systems opens up new research horizons on the topics of system design, configuration and performance evaluation. These topics need to consider that the systems are no longer static prototypes but instead several distributed components that can be added and removed in runtime. The distribution of modules in the system and their inherent connections will then potentially affect the system's global behaviour. Hence it is vital to understand the impact on performance as the system endures changes that affect its topology. This article presents an exploratory test case that shows that as a system evolves (and the nature of the network of its components changes) the performance of the system is necessarily affected in a specific direction. This performance landscape is necessarily complex and very likely nonlinear. Simulation plays therefore an important role in the study of these systems as a mean to generate data that can be later on used to generate macro level knowledge that may act as a guideline to improve both design and configuration.
|
|
| 29. |
|
|
| 30. |
|
|
| 31. |
|
|
| 32. |
|
|
| 33. |
|
|
| 34. |
|
|
| 35. |
|
|
| 36. |
|
|
| 37. |
- Onori, Mauro, 1961-, et al.
(författare)
-
A New Shop Floor Approach for Agile Assembly Systems
- 2004
-
Ingår i: Proceedings of the International Precision Assembly Seminar IPAS’2004, Bad Hofgastein, Austria, 11-13.02. 2004. - : University of Nottingham. - 0853581258
-
Konferensbidrag (refereegranskat)
|
|
| 38. |
- Onori, Mauro, 1961-, et al.
(författare)
-
A Preliminary Study of Business Model for Evolvable Production Systems
- 2009
-
Ingår i: Proceedings of the IEEE/ISAM-International Symposium on Assembly and Manufacturing. - Seoul, Korea : IEEE. - 9781424446278 ; , s. 402-407
-
Konferensbidrag (refereegranskat)abstract
- The aim of this paper is to define, through asurvey of the current achievements within the EvolvableParadigm universe, the potential target companies for theEvolvable Manufacturing Systems and to describe somefeatures of a business model that fits the EPS structureand requirements. Therefore, the new, main, concernssurfacing by the introduction of the Evolvable Paradigminto the industrial field have been underlined and analysedin order to put into evidence the economical advantagesachievable with their adoption. A simplified version of theEPS methodology is hereby presented as a framework inwhich concept like life cycle of a product, investmentevaluation tools and “coopetition” have been integratedenabling crossed considerations.
|
|
| 39. |
|
|
| 40. |
|
|
| 41. |
|
|
| 42. |
|
|
| 43. |
|
|
| 44. |
- Onori, Mauro, 1961-, et al.
(författare)
-
An evolvable robotic assembly cell
- 2011
-
Ingår i: IECON 2011. - Melbourne : IEEE.
-
Konferensbidrag (refereegranskat)abstract
- The work presented in this paper intends toclarify how the Evolvable Production Systems (EPS)paradigm has been used to develop a robotic assembly cellbased on a fully reconfigurable robot. The work includessome detail of the multiagent architecture based on coalitionsof assembly modules and how this was successfully used toimplement the control architecture for EPS. Finally, it willintroduce the issue of unprdictable behaviour as an approachto dealing with dnamic conditions, and how this may be addressed.
|
|
| 45. |
|
|
| 46. |
|
|
| 47. |
|
|
| 48. |
|
|
| 49. |
|
|
| 50. |
- Onori, Mauro, 1961-
(författare)
-
Bridging the Gap : Viewpoint
- 2010
-
Ingår i: Assembly Automation. - Bingley : Emerald. - 0144-5154 .- 1758-4078. ; 30:1, s. 5-6
-
Tidskriftsartikel (refereegranskat)
|
|
