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Enhancing digital human motion planning of assembly tasks through dynamics and optimal control

S. Bjorkenstam ; N. Delfs ; J. S. Carlson ; R. Bohlin ; Bengt Lennartson (Institutionen för signaler och system, Automation)
Procedia CIRP - 6th Cirp Conference on Assembly Technologies and Systems (2212-8271). Vol. 44 (2016), p. 20-25.
[Konferensbidrag, refereegranskat]

Better operator ergonomics in assembly plants reduce work related injuries, improve quality, productivity and reduce cost. In this paper we investigate the importance of modeling dynamics when planning for manual assembly operations. We propose modeling the dynamical human motion planning problem using the Discrete Mechanics and Optimal Control (DMOC) method, which makes it possible to optimize with respect to very general objectives. First, two industrial cases are simulated using a quasi-static inverse kinematics solver, demonstrating problems where this approach is sufficient. Then, the DMOC-method is used to solve for optimal trajectories of a lifting operation with dynamics. The resulting trajectories are compared to a steady state solution along the same path, indicating the importance of using dynamics.

Nyckelord: Assembly, Digital human modeling, Ergonomy, Dynamics, Optimal control



Denna post skapades 2016-07-04. Senast ändrad 2016-07-04.
CPL Pubid: 238872

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Automation

Ämnesområden

Robotteknik och automation

Chalmers infrastruktur