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Robust Supervisory Control for Product Routings With Multiple Unreliable Resources

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3 Author(s)
Song Foh Chew ; Dept. of Math. & Stat., Southern Illinois Univ., Edwardsville, IL ; Shengyong Wang ; Lawley, M.A.

Manufacturing systems are often subject to resource failure. In past work, we developed ldquorobustrdquo supervisory controllers for the single-unit resource allocation model. These guarantee that if any subset of resources fail, parts in the system requiring failed resources do not block the production of parts not requiring failed resources. To establish supervisor correctness, we assumed that each part type required at most one unreliable resource in its route. We now relax this assumption using a central buffer and present supervisors that guarantee robust operation without assumptions on route structure.

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Automation Science and Engineering, IEEE Transactions on  (Volume:6 ,  Issue: 1 )