| 1. |
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| 2. |
- Andler, Sten F., et al.
(författare)
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Information Fusion from Databases, Sensors and Simulations : A Collaborative Research Program
- 2005
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Ingår i: Proceedings. - : IEEE Computer Society. - 0769523064 ; , s. 234-241
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Konferensbidrag (refereegranskat)abstract
- This paper provides an overview of a collaborative research program in information fusion from databases, sensors and simulations. Information fusion entails the combination of data from multiple sources, to generate information that cannot be derived from the individual sources. This area is of strategic importance for industry and defense, as well as public administration areas such as health care, and needs to be pursued as an academic subject. A large number of industrial partners are supporting and participating in the development of the area. The paper describes the program’s general approach and main research areas, with a particular focus on the role of information fusion in systems development
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| 3. |
- Bäckstrand, Gunnar, et al.
(författare)
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Ergonomics analysis in a virtual environment
- 2007
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Ingår i: International Journal of Manufacturing Research. - : InderScience Publishers. - 1750-0591. ; 2:2, s. 198-208
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Tidskriftsartikel (refereegranskat)abstract
- Simulation can support the design of an ergonomic workplace by enabling early assessment of ergonomic conditions in a virtual environment. An important feature is the possibility to study alternative solutions or the effect of improvements from an ergonomics perspective. To be able to conduct an efficient and reliable evaluation in a virtual environment, an objective analysis method is essential. Such an analysis method should be integrated in the simulation software, and support a company's everyday ergonomics work process. In order to gain from existing ergonomics knowledge within a company, the possibility to implement such wisdom in the current simulation software becomes important. This paper presents an implementation work done with the purpose of integrating an established ergonomics work process into a virtual environment. It describes the benefits of an ergonomics work process where simulation and evaluation at early stages of a design process are key factors. The paper will also describe the integration process, i.e., the technical issues as well as the change in work methods.
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| 4. |
- Bäckstrand, Gunnar, et al.
(författare)
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Reduce of ergonomics design flaws through virtual methods.
- 2007
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Ingår i: Proceedings of the 39th annual Nordic Ergonomic Society Conference, Lysekil, Sweden, October 1-3, CD-ROM.. - : Nordic Ergonomics Society.
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Konferensbidrag (refereegranskat)abstract
- A work method for product and production system development that includes virtual methods for ergonomics analysis is presented and argued.The proposed work method is described and illustrated with an example,which the authors believe shows how a virtual work method can contributeto a better workplace design, and thereby, if utilised, would have prevented some of the design flaws that existed in the actual final product design in the example. This paper will also present the outcome, gain, and setbacks thatare connected to the use of virtual work analysis methods within a design process.
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| 5. |
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| 6. |
- De Vin, Leo, et al.
(författare)
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Information Fusion : What can the manufacturing sector learn from the defence industry?
- 2005
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Ingår i: IMC 22: Challenges Facing Manufacturing. - Dublin : Institute of Technology, Tallaght. - 9780955121807 ; , s. 363-371
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Konferensbidrag (refereegranskat)abstract
- This paper discusses information fusion including its nature as well as some models for information fusion. Research on information fusion is dominated by defence applications and therefore, most models to a certain extent are defence specific; it is explained how these can be made more generic by adapting them. It is explained how the manufacturing sector can benefit from information fusion research; some analogies between issues in manufacturing and issues in military applications are given. A specific area in which the manufacturing sector can benefit from research on information fusion is the area of virtual manufacturing. Many issues related to decision support through modelling, simulation and synthetic environments are identical for manufacturing and defence applications. A particular area of interest for the future will be verification, validation and accreditation of modelling and simulation components for synthetic environments with various involved parties.
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| 7. |
- De Vin, Leo J.
(författare)
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Air Bending of Sheet Metal
- 2005
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Ingår i: FAIM 2005: Volume I. - Bilbao : University of Deusto. - 8474859905 - 9788474859904 - 8474859913 - 9788474859911 ; , s. 465-473
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Konferensbidrag (refereegranskat)
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| 8. |
- De Vin, Leo J, 1957-, et al.
(författare)
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Extending the Use of Full-Scale Lean Production Simulators : Their Role as Innovation Testbeds
- 2020
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Ingår i: Advances in Transdisciplinary Engineering. - : IOS Press. - 2352-751X. - 9781614994398 ; 13, s. 3-12
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Tidskriftsartikel (refereegranskat)abstract
- This paper describes the use of a flexible full-scale simulation environment for Lean Production training and education called 'KLF Karlstad Lean Factory'. Instead of using the PDCA cycle as model for improvement cycles, the authors have developed a model that is more descriptive; it supports training transfer to the work environment in a more intuitive way. Recently, the authors have started to use the simulator as a testbed for innovative production solutions. Together with a company, the simulator is configured so as to emulate their envisaged future production solution. This participatory modelling simulation process consists of three main stages: (i) creating a common view on aim and scope, (ii) configuration modelling, and (iii) simulations. After the simulations, participants tend to continue seeking improvements, which illustrates the effectiveness of the approach. Future work will include developing a model for measuring lean production maturity in SMEs.
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| 9. |
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| 10. |
- De Vin, Leo J., 1957-, et al.
(författare)
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Spelbaserad Lean Produktion Träning – en praktisk workshop och demo
- 2021
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Annan publikation (populärvet., debatt m.m.)abstract
- Karlstad Lean Factory (KLF) är en fullskalig simulatormiljö vilken är konstruerad och byggd för Lean Produktion träning av studenter och industrianställda. En praktisk workshop i KLF kommer att erbjudas som innehåller såväl “prova på” som diskussion och erfarenhetsutbyte
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| 11. |
- De Vin, Leo J., et al.
(författare)
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The Information Fusion JDL-U model as a reference model for Virtual Manufacturing
- 2010
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Ingår i: Robotics and Computer-Integrated Manufacturing. - : Elsevier. - 0736-5845 .- 1879-2537. ; 26:6, s. 629-638
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents a description of Modelling and Simulation as used in the Virtual Systems Research Centre at the University of Skövde. It also gives a summarized account of issues discussed in previous work such as phases in a simulation project, Verification, Validation and Accreditation, and the use of simulation as a tool to reduce uncertainty. The role of the human in various phases/activities in simulation projects is highlighted. Examples of both traditional and advanced applications of Virtual Manufacturing are given. Examples of the latter are simulation-based monitoring and diagnostics, and simulation-based optimization. Two models for Information Fusion, the OODA loop and JDL-U model, are discussed, the latter being an extension of the JDL model that describes various levels of information fusion (JDL=“joint directors of laboratories”). Subsequently, the activities and phases in a Modelling and Simulation project are placed in the context of the JDL-U model. This comparison shows that there are very strong similarities between the six (0–5) levels in the JDL-U model and activities/phases in Modelling and Simulation projects. These similarities lead to the conclusion that the JDL-U model with its associated science base can serve as a novel reference model for Modelling and Simulation. In particular, the associated science base on the “user refinement” level could benefit the Virtual Manufacturing community.
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| 12. |
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| 13. |
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| 14. |
- Högberg, Dan, 1965-, et al.
(författare)
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Overlapping Ergonomic Evaluation in the Automotive Design Process
- 2002
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Konferensbidrag (refereegranskat)abstract
- Ergonomic evaluation typically comes late in the automotive design process, often not performed until physical mock-ups are produced. This may lead to expensive and cumbersome iterations, or to reductions of the final product quality due to low priority of meeting set ergonomic requirements. Computer aided design (CAD) is intensively used for design in the automotive industry. Performance and usability of computers and software are improving at a rapid pace, which enables CAD to be employed even more intensively. This encourages a digital design process where expensive, inflexible and time consuming physical mock-ups are only built at the end of the design process. This incorporates the risk that ergonomic evaluation will be put back even further. A way to address this problem is to enable ergonomics to be evaluated in the digital design process - in a virtual product. However, in many cases, evaluation made in a physical prototype is unbeatable in establishing ergonomic conditions. This paper discusses possible advantages of moving ergonomic evaluation earlier in the automotive design process by implementing planned overlapping strategies. It also shows initial results from a project at a car company, which aims at improving ergonomics integration in the automotive design process, e.g. by looking at task overlapping. These strategies are believed to be applicable both for evaluations made in a virtual environment and evaluations performed in the real world.
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| 15. |
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| 16. |
- Johansson, Daniel, et al.
(författare)
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A Low Cost Video See-Through Head Mounted Display for Increased Situation Awareness in an Augmented Environment
- 2008
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Ingår i: Proceedings of 5th INTUITION International Conference. - 9789608902879
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Konferensbidrag (refereegranskat)abstract
- In this paper we present a visual odometry system for agricultural field robots that is not sensitive to uneven terrain. A stereo camera system is mounted perpendicular to the ground and height and traveled distance are calculated using normalized cross correlation. A method for evaluating the system is developed, where flower boxes containing representative surfaces are placed in a metal-working lathe. The cameras are mounted on the carriage which can be positioned manually with 0.1 mm accuracy. Images are captured every 10 mm over 700 mm. The tests are performed on eight different surfaces representing real world situations. The resulting error is less than 0.6% of traveled distance on surfaces where the maximum height variation is measured to 96 mm. The variance is measured for eight test runs, total 5.6 m, to 0.040 mm. This accuracy is sufficient for crop-scale agricultural operations.
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| 17. |
- Johansson, Daniel, et al.
(författare)
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A low cost video see-through head mounted display for increased situation awareness in an augmented environment
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- A head mounted display is developed for use in an augmented reality immersive simulator for virtual training. The simulator requires a video see-through parallax-free display to accurately mix the real and virtual worlds. High field of view is also required to allow use of peripheral vision in order to create a higher sense of awareness for the user. Due to high cost associated with commercial off-the-shelf display systems, a custom solution is designed and developed by combining hardware and software. It’s shown that it’s possible to build a low cost display system that provides the necessary attributes and acceptable compromises for the current type of application.
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| 18. |
- Johansson, Daniel, et al.
(författare)
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An augmented virtuality simulator with an intuitive interface : concept, design and implementation
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- This paper describes the design and implementation of a simulator in which users can move untethered in a mixed reality where the boundary between real and virtual objects is minimal. A wide field of view, inexpensive, custom-built video see-through head-mounted display is used in combination with wireless image transfers, natural position displacement and software chroma keying. The result is a simulator that facilitates a high grade of presence with a user interface that allows a high degree of mobility.
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| 19. |
- Johansson, Daniel, 1980-
(författare)
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Convergence in mixed reality-virtuality environments : facilitating natural user behavior
- 2012
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This thesis addresses the subject of converging real and virtual environments to a combined entity that can facilitate physiologically complying interfaces for the purpose of training. Based on the mobility and physiological demands of dismounted soldiers, the base assumption is that greater immersion means better learning and potentially higher training transfer. As the user can interface with the system in a natural way, more focus and energy can be used for training rather than for control itself. Identified requirements on a simulator relating to physical and psychological user aspects are support for unobtrusive and wireless use, high field of view, high performance tracking, use of authentic tools, ability to see other trainees, unrestricted movement and physical feedback. Using only commercially available systems would be prohibitively expensive whilst not providing a solution that would be fully optimized for the target group for this simulator. For this reason, most of the systems that compose the simulator are custom made to facilitate physiological human aspects as well as to bring down costs. With the use of chroma keying, a cylindrical simulator room and parallax corrected high field of view video see-though head mounted displays, the real and virtual reality are mixed. This facilitates use of real tool as well as layering and manipulation of real and virtual objects. Furthermore, a novel omnidirectional floor and thereto interface scheme is developed to allow limitless physical walking to be used for virtual translation. A physically confined real space is thereby transformed into an infinite converged environment. The omnidirectional floor regulation algorithm can also provide physical feedback through adjustment of the velocity in order to synchronize virtual obstacles with the surrounding simulator walls. As an alternative simulator target use, an omnidirectional robotic platform has been developed that can match the user movements. This can be utilized to increase situation awareness in telepresence applications.
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| 20. |
- Johansson, Daniel, et al.
(författare)
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Design and evaluation of an omnidirectional active floor for synthetic environments
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- In the case of an application with a freely moving user it could be feasible that a simulator that facilitates real running, walking, and crawling can achieve a higher feeling of presence and situation awareness, and therefore potential training effect, compared to a simulator without such facilities. Omnidirectional walking is a research topic that has yielded a number of diverse solutions, but most are still within their prototype stages. Solutions can be expensive, mechanically complicated and in some cases unpractical. The complexity of existing solutions stems in the fact that they are two dimensional, given the normal two dimensional translation of human walking. If instead the problem is viewed upon from an angle of effect, another alternative is available. A two dimensional floor has the purpose to constantly allow translation in any direction, while it also transports the user towards its central region. This is to always have a marginal in all directions for changes in user translation direction or velocity. The effect of this is that a floor could be constructed to always facilitate transportation of the user towards its center, regardless of where on the floor’s surface the user is situated. This paper describes the design and evaluation of a powered omnidirectional floor that reduces the complexity of omnidirectional walking from two dimensions to one dimension. The floor is utilized to create a synthetic environment for training.
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| 21. |
- Johansson, Daniel, et al.
(författare)
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Towards convergence in a virtual environment : omnidirectional movement, physical feedback, social interaction and vision
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Movement, physical feedback, social interaction and vision are important factors for humans in the real world, and therefore also in a virtual world whose aim is to mimic the real world. The effect of a virtual environment application could increase through the use of a human-computer interface that can match natural human capability in such areas, and several novel components are presented herein. Here, movement and feedback is gained through an omnidirectional walking surface that enables untethered movement throughout a virtual world without imposing physical restrictions. Although several different approaches exist to the mechanical problem of two-dimensional translation, an alternative top-down approach can reduce complexity to one-dimensional space. Furthermore, interchange of subtle body language can be vital and achieved with a system that supports high fidelity in virtual texture representation of users, which can be more powerful in some cases than virtual geometry. Also, a new approach is taken to the design of a head mounted display with minimal weight through optics in the form of soft contact lenses, mounted directly on the eyes.
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| 22. |
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| 23. |
- Jägstam, Mats, et al.
(författare)
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Simulation Engineering Education and Methodology
- 2005
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Ingår i: FAIM 2005: Volume I. - Bilbao : University of Deusto. - 8474859905 - 9788474859904 - 8474859913 - 9788474859911 ; , s. 892-900
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Konferensbidrag (refereegranskat)
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| 24. |
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| 26. |
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