Virtual Ergonomic Assessment on Handheld Products based on Virtual Grasping by Digital Hand

2007-01-2511

06/12/2007

Event
2007 Digital Human Modeling Conference
Authors Abstract
Content
The purpose of this research is to develop a system for virtual ergonomic assessment of products without real subjects and physical mockups by integrating a digital hand model with a product model. In previous work, we developed functions of a semi-automatic grasp planning for the digital hand and of quantitatively evaluating the grasp stability of the product based on the force-closure and the grasp quality in our system. We also confirmed the validity of the results from these functions by comparing them with the real grasp postures. However, only evaluating the grasp stability could not necessarily derive the appropriate grasp postures. To solve this problem, in this paper, we propose a new function of evaluating “ease of grasping (EOG)” for the grasp posture based on EOG-map constructed from principal component analysis for finger joint angles in real subjects’ grasps. We also developed another function of optimizing the grasp posture to avoid inappropriate postures by evaluating the posture similarity on EOG-map in the system.
Meta TagsDetails
DOI
https://doi.org/10.4271/2007-01-2511
Pages
13
Citation
Endo, Y., Kanai, S., Kishinami, T., Miyata, N. et al., "Virtual Ergonomic Assessment on Handheld Products based on Virtual Grasping by Digital Hand," SAE Technical Paper 2007-01-2511, 2007, https://doi.org/10.4271/2007-01-2511.
Additional Details
Publisher
Published
Jun 12, 2007
Product Code
2007-01-2511
Content Type
Technical Paper
Language
English