VR-based operating modes and metaphors for collaborative ergonomic design of industrial workstations

Abstract

The aim of this paper is to evaluate two new operating design modes and their collaborative metaphors enabling two actors, a design engineer and an end-user, to work jointly in a collaborative virtual environment for workstation design. The two operating design modes that correspond to two different design paradigms include : direct design mode (the design engineer manipulates objects while the end-user specifies their activity constraints) and supervised design mode (the end-user manipulates objects while the design engineer specifies their process constraints). The corresponding collaborative metaphors enable the two actors to manipulate objects while one (the design engineer) can express process constraints and the other (the end-user) can express activity constraints. The usability evaluation of the modes and metaphors consisted in placing a workstation design element on a digital workstation mock-up where a trade-off was to be found between process constraints and activity constraints. The results show that if we consider the completion time as the most important criterion to achieve, the direct design mode must be favoured. Otherwise, if the activity constraints are predominant, the supervised design mode must be favoured. In any case, the addition of an ergonomist's point of view is supported and warranted in order to enhance the effectiveness of the system.

Model Based Compensation for Low Mass Objects Haptic Manipulation in Virtual Environments

“…Thus, its activity is monitored and analyzed by external actors [1] such as an ergonomist. In cases involving particularly low level of force exertion, the interaction can be ensured thanks to a 3D-joystick [2][3][4][5][6].…”

Virtual Reality and Digital Human Modeling for Ergonomic Assessment in Industrial Product Development: A Patent and Literature Review

“…Methods/Measurements [5,6,30,35,37,38,40,42] Rapid Upper Limb Assessment (RULA) [5,37,40] Rapid Entire Body Assessment (REBA) [1,30,36] Ergonomic Assessment Worksheet (EAWS) [35] National Institute for Occupational Safety and Health (NIOSH) [16] Ovako Working Posture Analysis System (OWAS) [1] Methods-Time Measurement (MTM-UAS) [14,41] Other (NASA-TLX questionnaire, Kinetic Energy ratio)…”

Human Interaction in a Virtual Reality Environment

“…Different studies have showed that VR can be used as a tool in the design of workstations and for training purposes [2]. More specifically, it can be used in the ergonomic design of workstations, where a virtual environment can be easily tested and modified than a physical prototype [3,4].…”