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Performance and Robustness of ILC Applied to Flexible Systems
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
2008 (English)In: Proceedings of Reglermöte 2008, 2008, 210-216 p.Conference paper, Published paper (Other academic)
Abstract [en]

When an ILC algorithm is applied to an industrial robot, the goal is to move the tool along a desired trajectory, while only the motor position can be measured. In this paper aspects of robustness and performance are discussed when an ILC algorithm is applied to a flexible two-mass system. It is shown that the stabilising controller of the two-mass system also directly affects the robustness properties of the ILC algorithm. A classical non-causal P-ILC algorithm and a model-based ILC design using optimisation are applied to the system, based on the error for the first mass. Performance and robustness of the algorithms are compared when model errors are introduced in the system, showing that the optimisation-based approach can handle larger model uncertainties. It is illustrated that the performance of the overall system, when considering position of the second mass, is the practical limit compared to the limiting factor of the robustness of the ILC algorithms.

Place, publisher, year, edition, pages
2008. 210-216 p.
Keyword [en]
Iterative learning control, Robustness, Performance, Industrial robots, Simulation
National Category
Engineering and Technology Control Engineering
Identifiers
URN: urn:nbn:se:liu:diva-43201Local ID: 72899OAI: oai:DiVA.org:liu-43201DiVA: diva2:264060
Conference
Reglermöte 2008, Luleå, Sweden, June, 2008
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2013-02-23

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Wallén, JohannaNorrlöf, MikaelGunnarsson, Svante

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