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Publications (10 of 10) Show all publications
Keyvani, A., Hanson, L., Högberg, D., Örtengren, R., Lämkull, D., Rhen, I. & Bolmsjö, G. (2014). Ergonomic Risk Assessment Using Motion Data Modelling, Exposure Calculation and Comparison with an Epidemiological Reference Database. International Journal of Human Factors Modelling and Simulation
Open this publication in new window or tab >>Ergonomic Risk Assessment Using Motion Data Modelling, Exposure Calculation and Comparison with an Epidemiological Reference Database
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2014 (English)In: International Journal of Human Factors Modelling and Simulation, ISSN 742-5549Article in journal (Refereed) Submitted
Place, publisher, year, edition, pages
InderScience Publishers, 2014
Keywords
Ergonomic risk assessment, digital manikins, modelling, time-sensitive, workload, wrist joint
National Category
Robotics
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
urn:nbn:se:hv:diva-7124 (URN)
Note

Ingår i dissertation

Available from: 2014-12-11 Created: 2014-12-11 Last updated: 2019-05-13Bibliographically approved
Keyvani, A., Lämkull, D., Bolmsjö, G. & Örtengren, R. (2014). Extending Functionalities of DHM Tools Using Motion Databases. International Journal of Industrial Ergonomics
Open this publication in new window or tab >>Extending Functionalities of DHM Tools Using Motion Databases
2014 (English)In: International Journal of Industrial Ergonomics, ISSN 0169-8141, E-ISSN 1872-8219Article in journal (Refereed) Submitted
Keywords
Digital Human Modelling, Motion Databases, Natural looking Motion
National Category
Robotics
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
urn:nbn:se:hv:diva-7132 (URN)
Note

Ingår i dissertation

Available from: 2014-12-11 Created: 2014-12-11 Last updated: 2019-05-10Bibliographically approved
Keyvani, A., Lämkull, D., Bolmsjö, G. & Örtengren, R. (2014). Functionalities of DHM Tools Using Motion Databases. International Journal of Industrial Ergonomics
Open this publication in new window or tab >>Functionalities of DHM Tools Using Motion Databases
2014 (English)In: International Journal of Industrial Ergonomics, ISSN 0169-8141, E-ISSN 1872-8219Article in journal (Refereed) Submitted
Place, publisher, year, edition, pages
Amsterdam: Elsevier, 2014
Keywords
Digital Human Modelling, Motion databases, natural looking motion
National Category
Robotics
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
urn:nbn:se:hv:diva-7126 (URN)
Note

Ingår i dissertation

Available from: 2014-12-11 Created: 2014-12-11 Last updated: 2018-07-25Bibliographically approved
Keyvani, A., Paul, G., Lämkull, D., Bolmsjö, G. & Örtengren, R. (2014). Standardization of Motion Databases for DHM Applications: Challenges, Issues and considerations.
Open this publication in new window or tab >>Standardization of Motion Databases for DHM Applications: Challenges, Issues and considerations
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2014 (English)In: Article in journal (Refereed) Submitted
Keywords
Motion capture database, standardization, digital human modeling
National Category
Robotics
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
urn:nbn:se:hv:diva-7118 (URN)
Note

Ingår i avhandling

Available from: 2014-12-11 Created: 2014-12-11 Last updated: 2018-07-25Bibliographically approved
Keyvani, A. (2014). Structuring and use of motion data for computer manikin work task simulations. (Doctoral dissertation). Göteborg: Chalmers tekniska högskola
Open this publication in new window or tab >>Structuring and use of motion data for computer manikin work task simulations
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Modelling and simulation of human motions are of great interest for a number of industrial applications such as ergonomics and production planning. Over time, efforts have been made to provide computerized human models with biomechanically accurate underlying skeleton and realistically rendered volumetric representation of muscles, skin, clothes, etc. known as computer manikins. Despite considerable progress in computational methods for human motion generation in these models, there are still major challenges to generate natural looking motions for daily routine tasks for example in manual assembly lines. This research work proposes a software platform, related methods, and data structures to support use of real motion data for simulating and analysing routine work tasks. One contribution of this thesis is to find ways to deploy motion data in a uniform and efficient manner. The outcomes are a data schema, standards for data conversions, and procedures to aggregate motion data in a unified database. Another part of this thesis is dedicated to 'generating new motions by re-using stored data'. This is done by a synthesizer platform consisting of modules which are able to decompose tasks into primary motions, to search and retrieve motion pieces from the motion database, and to compose a new motion based on the required specifications. In addition, this thesis, presents a method to analyse the generated motions using time-varied motion data. Results of this work contribute in extending current tool functionalities by simulating complicate routine motions which, if not impossible, are very hard to simulate using today's computational algorithms. This work also improves the use of time-varied direct measurement analysis tools against traditional static observational methods.

Place, publisher, year, edition, pages
Göteborg: Chalmers tekniska högskola, 2014. p. xvi, 75 s.
Series
Doktorsavhandlingar vid Chalmers tekniska högskola, ISSN 0346-718X ; 3780
Keywords
Digital Human Modelling, Computer Manikins, Motion Capture Data Management, Virtual Production Tools, Human Motion Simulation, Motion Synthesis
National Category
Robotics
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
urn:nbn:se:hv:diva-7134 (URN)9789175970998 (ISBN)
Opponent
Supervisors
Available from: 2014-12-11 Created: 2014-12-11 Last updated: 2018-07-25Bibliographically approved
Keyvani, A., Lämkull, D., Bolmsjö, G. & Örtengren, R. (2013). Using methods-time measurement to connect digital humans and motion databases. Paper presented at 4th Int. Conf. on Digital Human Modeling and Applications in Health, Safety, Ergonomics, and Risk Management: Human Body Modeling and Ergonomics, DHM 2013, Held as Part of 15th Int. Conf. on Human-Computer Interaction, HCI 2013; Las Vegas, NV; United States; 21 July 2013 through 26 July 2013; Code 97767. Lecture Notes in Computer Science, 8026(Part 2), 343-352
Open this publication in new window or tab >>Using methods-time measurement to connect digital humans and motion databases
2013 (English)In: Lecture Notes in Computer Science, ISSN 0302-9743, E-ISSN 1611-3349, Vol. 8026, no Part 2, p. 343-352Article in journal (Refereed) Published
Abstract [en]

To simulate human motions in DHM tools, using techniques which are based on real human data is one promising solution. We have presented a solution in this study to connect motion databases with DHM tools. We have showed that using a motion database with MTM-based annotations is a promising way in order to synthesize natural looking motions. A platform consists of a Motion Database, a Motion Generator, and a DHM tool was introduced and tested. The results showed successful application of the presented platform in the designed test case. © 2013 Springer-Verlag.

Keywords
Digital Human Modeling, Human Motion Simulation, Motion Databases, Digital humans, Human data, Human motions, Motion database, Motion generator, Test case, Database systems, Risk management, Tools, Ergonomics, Work-integrated Learning, WIL, AIL
National Category
Robotics
Research subject
ENGINEERING, Mechatronics; Work Integrated Learning
Identifiers
urn:nbn:se:hv:diva-5571 (URN)10.1007/978-3-642-39182-8_40 (DOI)2-s2.0-84879979240 (Scopus ID)9783642391811 (ISBN)
Conference
4th Int. Conf. on Digital Human Modeling and Applications in Health, Safety, Ergonomics, and Risk Management: Human Body Modeling and Ergonomics, DHM 2013, Held as Part of 15th Int. Conf. on Human-Computer Interaction, HCI 2013; Las Vegas, NV; United States; 21 July 2013 through 26 July 2013; Code 97767
Available from: 2013-08-19 Created: 2013-08-13 Last updated: 2019-06-03Bibliographically approved
Keyvani, A., Johansson, H. & Ericsson, M. (2012). Motion synthesizer platform for moving manikins. In: 2012 AHFE International Conference 21-25 July 2012 Hilton San Francisco, Union Square, California: Conference proceedings. Paper presented at AHFE 2012. Held as a part of 4th international conference on applied human factors and ergonomics, AHFE 2012 (pp. 545-554). AHFE
Open this publication in new window or tab >>Motion synthesizer platform for moving manikins
2012 (English)In: 2012 AHFE International Conference 21-25 July 2012 Hilton San Francisco, Union Square, California: Conference proceedings, AHFE , 2012, p. 545-554Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
AHFE, 2012
Keywords
Digital human models, Human motion analysis, Motion synthesizing
National Category
Robotics
Research subject
ENGINEERING, Mechatronics; Production Technology
Identifiers
urn:nbn:se:hv:diva-4457 (URN)978-0-9796435-5-2 (ISBN)
Conference
AHFE 2012. Held as a part of 4th international conference on applied human factors and ergonomics, AHFE 2012
Available from: 2012-06-28 Created: 2012-06-26 Last updated: 2018-08-09Bibliographically approved
Keyvani, A. (2012). Toward motion-capture-based digital human modelling. (Licentiate dissertation). Göteborg: Chalmers University of Technology
Open this publication in new window or tab >>Toward motion-capture-based digital human modelling
2012 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Göteborg: Chalmers University of Technology, 2012. p. 47
Series
Research series from Chalmers University of Technology, Department of Product and Production Development, ISSN 1652-9243 ; 62
Keywords
Digital human modeling, Motion capture data management, Virtual production tools, Human motion simulation
National Category
Robotics
Research subject
ENGINEERING, Mechatronics
Identifiers
urn:nbn:se:hv:diva-4474 (URN)
Available from: 2012-09-04 Created: 2012-06-28 Last updated: 2018-07-25Bibliographically approved
Keyvani, A., Johansson, H., Ericsson, M., Lämkull, D. & Örtengren, R. (2011). Schema for Motion Capture Data Management. In: Lecture Notes in Computer Science. 3rd International Conference on Digital Human Modeling, ICDHM 2011: Orlando, 9-14 July 2011. Paper presented at 3rd International Conference on Digital Human Modeling, ICDHM 2011 (pp. 99-108).
Open this publication in new window or tab >>Schema for Motion Capture Data Management
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2011 (English)In: Lecture Notes in Computer Science. 3rd International Conference on Digital Human Modeling, ICDHM 2011: Orlando, 9-14 July 2011, 2011, p. 99-108Conference paper, Published paper (Refereed)
Abstract [en]

A unified database platform capable of storing both motion captured data and information about these motions (metadata) is described. The platform stores large motion captured data in order to be used by different applications for searching, comparing, analyzing and updating existing motions. The platform is intended to be used to choose a realistic motion in simulation of production lines. It is capable of supporting and handling different motion formats, various skeleton types and distinctive body regions in a uniform data model. Extended annotating system is also introduced to mark the captured data not only in the time domain (temporal) but also on different body regions (spatial). To utilize the platform, sample tests are performed to prove the functionality. Several motion captured data is uploaded to the database while MATLAB is used to access the data, ergonomically analyze the motions based on OWAS standard, and add the results to the database by automatic tagging of the postures.

Series
Lecture Notes in Computer Science, ISSN 0302-9743 ; 6777
Keywords
motion capture database, virtual production systems, digital human modeling, computerized ergonomic analysis
National Category
Robotics
Research subject
ENGINEERING, Mechatronics
Identifiers
urn:nbn:se:hv:diva-4472 (URN)10.1007/978-3-642-21799-9_11 (DOI)978-3-642-21798-2 (ISBN)
Conference
3rd International Conference on Digital Human Modeling, ICDHM 2011
Available from: 2012-06-28 Created: 2012-06-28 Last updated: 2018-07-25Bibliographically approved
Keyvani, A. & Danielsson, F. (2009). A Virtual Manufacturing Approach for Integrating Fixture Design with Process Planning. In: Proceedings of the sixth CIRP-sponsored International Conference on Digital Enterprise Technology: 14-16 dec, HongKong (pp. 483-496).
Open this publication in new window or tab >>A Virtual Manufacturing Approach for Integrating Fixture Design with Process Planning
2009 (English)In: Proceedings of the sixth CIRP-sponsored International Conference on Digital Enterprise Technology: 14-16 dec, HongKong, 2009, p. 483-496Conference paper, Published paper (Other academic)
Abstract [en]

Computer Aided Process Planning has received more attention recently due to considerable progress in the aspects of both technology and theory. Beside the traditional trends and efforts to integrate the product design and process planning activities usually referred to as concurrent engineering, virtual manufacturing tools have opened new horizons to this domain. This paper describes how to combine an existing modular fixture design with process planning and simulation tools. The proposed concurrent architecture consists of a functional model and an operational workflow for the design of modular fixtures within the process-planning phase. Two different paradigms, the Variant and the Generative, are discussed in relation to the proposed architecture. Fixtures for Body in White lines are a crucial design problem in the automotive industry. Therefore, the proposed architecture has been tested and investigated in such an environment.

Keywords
Computer Aided Process Planning - Computer Aided Fixture Design, Virtual Manufacturing, Integrated Process Planning
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
urn:nbn:se:hv:diva-2234 (URN)10.1007/978-3-642-10430-5_37 (DOI)978-3-642-10429-9 (ISBN)
Available from: 2010-02-23 Created: 2010-02-23 Last updated: 2018-07-25Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-9782-1686

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