Abstract
Non-obstacle design is critical to tailor physically handicapped workers in manufacturing system. Simultaneous consideration of variability in physically disabled users, machines and environment of the manufacturing system is extremely complex and generally requires modeling of physically handicapped interaction with the system. Most current modeling either concentrates on the task results or functional disability. The integration of physical constraints with task constraints is far more complex because of functional disability and its extended influence on adjacent body parts. A framework is proposed to integrate the two constraints and thus model the specific behavior of the physical handicapped in virtual environment generated by product specifications. Within the framework a simplified model of physical disabled body is constructed, and body motion is generated based on 3 levels of constraints(effecter constraints, kinematics constraints and physical constraints). The kinematics and dynamic calculations are made and optimized based on the weighting manipulated by the kinematics constraints and dynamic constraints. With object transferring task as example, the model is validated in Jack 6.0. Modelled task motion elements except for squatting and overreaching well matched with captured motion elements. The proposed modeling method can model the complex behavior of the physically handicapped by integrating both task and physical disability constraints.
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This project is supported by National Natural Science Foundation of China(Grant No. 60975058)
FU Yan, born in 1977, is currently a lecturer at School of Mechanical Science and Engineering, Huazhong University of Science and Technology, China. Her research interests include human modeling, optimized design.
LI Shiqi, born in 1965, is currently a professor at School of Mechanical Science and Engineering, Huazhong University of Science and Technology, China. He received his PhD degree from Huazhong University of Science and Technology, China, in 1992
CHEN Gwen-guo, born in 1956, is the President of Foxconn IE College, Foxconn Technology Group, China and IIE Fellow. He received his PhD degree in industrial engineering from University of Oklahoma, US.
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Fu, Y., Li, S. & Chen, Gg. Motion/posture modeling and simulation verification of physically handicapped in manufacturing system design. Chin. J. Mech. Eng. 26, 225–231 (2013). https://doi.org/10.3901/CJME.2013.02.225
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DOI: https://doi.org/10.3901/CJME.2013.02.225