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Driver seat adjustment control design for heavy vehicles
2004 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This project concerns the design of driver seat adjustment controls in heavy vehicles and has been conducted at Volvo Truck Corporation, through Volvo Technology, in Gothenburg. The main goal is to review the existing seat controls of today, formulate control design guidelines and recommendations for future seat controls, and give some solution proposals. Volvo experience that there is a problem with the intuitiveness of the controls, that there are low actual usage of the functions and that bad control positions make it difficult to see and find the controls. Within the Volvo Corporation there is a great diversity of driver seats which complicates recognition and identification of controls and functions. A market analysis and interviews made in the beginning of the project confirmed these apprehensions and revealed some other problems. For example the seat manufacturers influence the seat design more than the vehicle producers. The seat design therefore seems to vary as much within heavy vehicle producing companies as between the companies. Another result of the interviews was a ranking of the functions regarding frequency of use and importance. Some general requests on the control design were also gathered. A brainstorming session generated a lot of ideas that were used to develop new concepts. The concepts were presented on wall charts and evaluated on handheld computers. The evaluation together with a criteria weighing and concept ranking worked as basic data for decision-making and in a discussion three concepts were sifted out as most interesting to continue with. The concepts were improved and models built. A user test with 18 test persons that were conducted gave a lot of information on the usability of the controls. Observations and comments from the test, together with the result from an evaluation form, underlay the formulation of design guidelines on driver seat controls and the improvement proposals given for all three concepts as well as for the existing seat controls in Volvo trucks. The new concepts are better than the existing controls on most of the examined areas. Controls designed and arranged to depict a seat is preferred. It is recommended to apply the same principle on both manual and electrical seat controls, as far as it’s possible. Perception of touch should be promoted instead of visual identification of the controls. Finally, drivers need information on how to sit: they often know about the risks connected with long term sitting, but they don’t know how to reduce these risks.

Place, publisher, year, edition, pages
Keyword [en]
Technology, control, seat, user test, usability test, driver environment, reglage, säte, förarmiljö, lastbilar, användartest, arbetsmiljö
Keyword [sv]
URN: urn:nbn:se:ltu:diva-58264ISRN: LTU-EX--04/118--SELocal ID: ed865212-2e6b-40f8-9c1b-098597a5c8e9OAI: diva2:1031652
Subject / course
Student thesis, at least 30 credits
Educational program
Ergonomic Design & Production Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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