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Automatic Control Sequence Generation for a Hybrid Disassembly System

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3 Author(s)
Hyung-Ju Kim ; Dept. of Assembly Technol. & Factory Manage., Tech. Univ. Berlin ; Robert Harms ; Gnther Seliger

Disassembly plays a key role in a life-cycle-based economy since it enables the recovery of resources in product and material cycles. In order to set up future disassembly plants, various problems have to be solved in advance. This includes varying quantities as well as a wide range of product types and states. A partly automated disassembly system could adapt to a large variety of products and different degrees of devaluation. Differences between a given disassembly plan and the actual situation at the shop floor require a highly flexible control system. High flexibility can be achieved by rapid rearrangement of transport processes and disassembly operations based on the actual system conditions in relation to requested disassembly tasks. This requires an adaptive control based on modules. Additionally, the ability to exchange control modules, variables, and parameters online will be required. Consequently, at the device level, robots have to be adaptive to new requirements in cooperation with the cell controller. Modularized program blocks and online exchanges are also required for the robot controller. Note to Practitioners-In this paper, a concept for the generation of flexible control sequences for a partly automated disassembly system has been presented, which can cope with the disassembly object variety, different product conditions, as well as product amounts. Washing machines were chosen as an example for the product group domestic appliances. The approach is directed at the planning level and cell-control level. The concept for the generation of disassembly control sequences consists of a function unit for the disassembly control system. The procedure, which will be implemented in the module, considers the availability of disassembly tools and the technological feasibility of disassembly processes and tools. A modular control sequence will be generated by the programmed function unit. The developed control concept can also be applied for very small lot-siz- - ed manufacturing and assembly tasks

Published in:

IEEE Transactions on Automation Science and Engineering  (Volume:4 ,  Issue: 2 )