Reach posture prediction of upper limb for ergonomic workspace evaluation

Eui S. Jung, Dohyung Kee, Min K. Chung

Research output: Contribution to journalConference articlepeer-review

28 Citations (Scopus)


Proper assessment of reach posture is one of the essential functions for ergonomic workspace evaluation in CAD systems with a built-in man-model. In this study, Each upper limb is modelled as a four-link system, consisting of trunk, upper arm, lower arm, and hand, being regarded as a redundant manipulator with a total of eight degrees of freedom. Inverse kinematics is introduced in this study to predict the trajectory of multi-link segmental movement. Among several kinematic methods for solving the multi-link system, the resolved motion method was found to be effective to solve this redundant manipulator model, and the joint range availability was used as a performance function in order to guarantee local optimality. Real reach postures taken from the subject were analyzed by Motion Analysis System and showed reasonable results when compared to those obtained from the model.

Original languageEnglish
Pages (from-to)702-706
Number of pages5
JournalProceedings of the Human Factors Society
Publication statusPublished - 1992
Externally publishedYes
EventProceedings of the Human Factors Society 36th Annual Meeting. Part 2 (f 2) - Atlanta, GA, USA
Duration: 1992 Oct 121992 Oct 16

ASJC Scopus subject areas

  • General Engineering


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