Multi-objective collaborative assembly line design problem with the optimisation of ergonomics and economics

Manufacturing systems are socio-technical systems, with explicit interactions between humans and technologies in shared workspaces. These workspaces could also be called hybrid collaborative manufacturing which involve workers as well technological equipment combine the benefits of human new Industry 4.0 technologies, such particularly useful a context requiring flexibility adaptability. Furthermore, 5.0 approach has objective to shift toward more human-centric resilient systems. The key problems solve design combinatorial assembly line balancing problem selection problem. An efficient sustainable requires cost-effective choice while improving ergonomics safety workers. Both decisions workload assignment impact system present conflicting criteria. To this end, we propose multi-objective approach, objectives optimisation investment costs fatigue recovery criterion. We linearise formulate Mixed Integer Linear Programming formulation. developed an exact solving algorithm based on ϵ-constraint obtain trade-off these objectives. conducted numerical experiments different instances from literature promising results for up 45 operations. Finally, discuss insightful managerial conclusions future research perspectives.