Optimization based Feedforward mitigation of Elastic Flexure of Distributed Parameter System due to Reference Tracking

If a large scale structure performs a rigid body motion, this motion is superposed by an elastic flexure due to its inherent elasticity. In order to mitigate the elastic motion feedforward and feedback laws can be applied. By minimizing the L2-norm of the elastic flexure subject to a reference traje...

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Bibliographic Details
Published inIFAC-PapersOnLine Vol. 55; no. 27; pp. 50 - 55
Main Authors Heining, André, Sawodny, Oliver
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.01.2022
Subjects
Distributed parameter systems
excitation design
Feedforward control
Input
Linear systems
modal analysis
Vibration
Linear systems
Input
Vibration
excitation design
Feedforward control
modal analysis
Distributed parameter systems
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Summary:If a large scale structure performs a rigid body motion, this motion is superposed by an elastic flexure due to its inherent elasticity. In order to mitigate the elastic motion feedforward and feedback laws can be applied. By minimizing the L2-norm of the elastic flexure subject to a reference trajectory and the elastic system description we derive a feedforward signal that attenuates elastic motions of the structure. A comparison to simplified solution approaches shows a major improvement for reference signals in the range of the system's natural frequencies.
ISSN:2405-8963
2405-8963
DOI:10.1016/j.ifacol.2022.10.487