| 3011. |
- Högberg, Dan, 1965-, et al.
(författare)
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Basic Method for Handling Trivariate Normal Distributions in Case Definition for Design and Human Simulation
- 2014
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Ingår i: Advances in Applied Digital Human Modeling. - : AHFE Conference. - 9781495120947 ; , s. 27-40
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Konferensbidrag (refereegranskat)abstract
- The paper describes a basic approach for the establishment of representative test persons when performing accommodation analyses and wanting to simultaneously consider normal variation in three variables. The main application is for defining a number of different manikins when performing ergonomics simulations for boundary case based accommodation analyses using digital human modelling tools. The method is also applicable when wanting to select representative people to be involved in user trials or to get direct design data. One objective is that the proposed method shall support inclusive design in that it is easy to adopt by non-experts in multivariate accommodation analyses, and accordingly reduce the amount of unsuitable univariate accommodation analyses. The paper introduces the reader to the area of interest, making links to previous research and current problems. The approach for the development of the basic method is explained. The confidence ellipse method is used for defining appropriate boundary manikins according to three selected key variables and desired accommodation level. The paper includes two examples that illustrate the method and compare the method to an alternative method.
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| 3012. |
- Högberg, Dan, et al.
(författare)
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Computer manikin family usage for human accomodation
- 2003
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Ingår i: Mind and Body in a Technological World. - 9979608617 ; , s. 184-188
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Konferensbidrag (refereegranskat)abstract
- Commonly percentiles are used to define users’ bodily dimensions. The percentile approach is however not suitable for multivariate problems such as the design of car cockpits, i.e. where a range of body segment dimensions affects the design. An alternative way is to use a set, afamily, of manikins for evaluation that better represents human variety. The aim of this study was to compare seat and steering wheel adjustment ranges obtained when using manikin families or a percentile approach as the user representation in human simulation software. Results obtained indicate that a more elaborate and careful consideration of users can be achieved when using a manikin family approach for human accommodation compared to apercentile approach.
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| 3013. |
- Högberg, Dan, 1965-, et al.
(författare)
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Concept of Formalized Test Procedure for Proactive Assessment of Ergonomic Value by Digital Human Modelling Tools in Lean Product Development
- 2018
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Ingår i: Advances in Human Factors in Simulation and Modeling. - Cham, Switzerland : Springer. - 9783319605906 - 9783319605913 ; , s. 425-436
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Konferensbidrag (refereegranskat)abstract
- A concept of a formalized test procedure for proactive assessment of ergonomic value by digital human modelling (DHM) tools in lean product development (LPD) is proposed and described. The objective of the formalized procedure is to integrate the utilization of DHM tools in LPD and to support the delivery of ergonomic value and reduce waste in product and production development processes. A design process model is illustrated and described, and examples are given of how to specify and work with ergonomic value in the process.
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| 3014. |
- Högberg, Dan, 1965-, et al.
(författare)
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Creating and shaping the DHM tool IMMA for ergonomic product and production design
- 2016
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Ingår i: International Journal of the Digital Human. - : InderScience Publishers. - 2046-3375 .- 2046-3383. ; 1:2, s. 132-152
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Tidskriftsartikel (refereegranskat)abstract
- The history, status and outlook of the research and development actions associated with the creation of the digital human modelling tool intelligently moving manikins (IMMA) are described. The underlying fundamental concepts are described and research and development results so far are illustrated or referred to. Two case studies illustrating use of IMMA on industry-based problems are described. The paper also covers reflections on conceptions for prospective DHM tool developments from a general perspective, relating to areas of ergonomics and design methodology, as well as describing some of the plans for further developments and applications of the IMMA tool. These may be of assistance when identifying challenges for future research and development of DHM tools that are used in product and production design processes in industry.
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| 3015. |
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| 3016. |
- Högberg, Dan, 1965-, et al.
(författare)
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DHM Based Test Procedure Concept for Proactive Ergonomics Assessments in the Vehicle Interior Design Process
- 2018
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Ingår i: Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018). - Cham, Switzerland : Springer. - 9783319960760 - 9783319960777 ; , s. 314-323
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Konferensbidrag (refereegranskat)abstract
- The development of a digital human modelling (DHM) based test procedure concept for the assessment of physical ergonomics conditions in virtual phases of the vehicle interior design process is illustrated and discussed. The objective of the test procedure is to be a valuable tool for ergonomic evaluations and decision support along the design process, so that ergonomic issues can be dealt with in an efficient, objective and proactive manner. The test procedure is devised to support companies in having stable and objective processes, in accordance with lean product development (LPD) philosophies. The overall structure and fundamental functionality of the test procedure concept is explained by a simplified use case, utilizing the DHM tool IPS IMMA to: define manikin families and manikin tasks; predict manikin motions; and visualize simulations and ergonomics evaluation outcomes.
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| 3017. |
- Högberg, Dan
(författare)
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Digital human modelling for user-centred vehicle design and anthropometric analysis
- 2009
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Ingår i: International Journal of Vehicle Design. - : InderScience Publishers. - 0143-3369 .- 1741-5314. ; 51:3/4, s. 306-323
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Tidskriftsartikel (refereegranskat)abstract
- Digital human modelling (DHM) is discussed as a design tool in the context of user-centred design, with a focus on DHM usage for anthropometric analysis in occupant packaging tasks in the vehicle interior design process. References are made to concepts of inclusive design, user-centred design, design cognition and design methodology. Examples are presented to illustrate how DHM can be of great use to the vehicle designer, but also to show some of the difficulties involved. This includes the complexity in considering anthropometric variation of the targeted product users in multivariate design problems, such as the design of vehicle interiors and suggestions on how to deal with this difficulty in an industrial design setting. Overall, the paper takes a designer's view of DHM tools and illustrates how the tool can be of value in the design process, but also considers what implications this has on the functionality and usability of the tools.
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| 3018. |
- Högberg, Dan
(författare)
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Ergonomics Integration and User Diversity in Product
- 2005
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Concideration of products' ergonomic qualitys is one important component for successful product developement. Product designers engaged in the core activity of product developement need methods that support the consideration of ergonomics along with other product requirements. this thesis aims to adress these needs. The first part of the thesis investigates how people working within product developement organisations communicate with and about users of their products. The general need for methods to support communication of user aspects in product development is indentified trough formal interviews whith product developers and a review of the management, ergonomics and design litterature. The second part of the thesis studies the factors wich affect th integration of ergonomics in product design. Supportive methods, including User Characters, for evoking user concideration among designers together with Overlapping methods fos scheduling ergonomics evaluation in product design processes are introduced and argued. The third part of the thesis reviews an discusses computer aided ergonomics as a mens for integration of ergonomics in product design. A web-based support system for effective employment of human simulation tools is developed using a participativa approach and evaluated based on the system's usability. The objective of the fourt part of the thesis is to study how human simulation tool can aid designers' consideration of human diversity to accomodate users of diverse anthropometric characteristics in multivariate design problems such as automobile cockpits. The work involves the evaluation off different approaches for th egeneration of specific manikin families wich can be used as test groups for fitting trials in the virtual design process. The research demonstrates enchantments in design methodology knowledge to support integration of ergonomics in design product processes with a focus on anthopometric diversity in vehicledesign.
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| 3019. |
- Högberg, Dan, 1965-, et al.
(författare)
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Identification of redundant boundary cases
- 2015
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Ingår i: Proceedings of the 19th Triennial Congress of the International Ergonomics Association. - Zürich, Switzerland : The International Ergonomics Association. ; , s. 1-5
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Konferensbidrag (refereegranskat)abstract
- The boundary case method is established for the representation and consideration of anthropometric diversity in design tasks with certain characteristics. Sometime boundary cases are defined separately for two distributions, e.g. for females and males, which may lead to a situation where some boundary cases will be redundant in that they are located within the joint distribution rather than on the joint boundary. This paper describes and illustrates a method for automatic identification of redundant boundary cases that are located within two three-dimensional overlapping distributions.Practitioner Summary: The paper describes a pragmatic way to focus the design work on users with specific limiting body measurement combinations that can be used to obtain design data or be used to describe appropriate test persons or digital human models for design problems where the boundary case method is suitable.
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| 3020. |
- Högberg, Dan, et al.
(författare)
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Increasing Functionality of DHM Software by Industry Specific Program Features
- 2009
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Konferensbidrag (refereegranskat)abstract
- This paper illustrates how Digital Human Modeling (DHM) tool functionality can be increased through the development of industry specific features. The features are based on a design tool, the Mobility Gallery, established by the cooperating health care company. Each resident in the Mobility Gallery has different levels of functional mobility and is described with different personal characteristics as well as background details. The integration of the resident descriptions in a commercial DHM tool is presented and discussed. The rationale for this approach is that the synthesis of DHM tool functionality and the Mobility Gallery descriptions will render a DHM tool with features offering augmented applicability for product design in a health care setting.
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