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Reconstruction of Nonlinear Characteristics by Means of Advanced Observer Design Approaches

[+] Author Affiliations
Fateme Bakhshande, Dirk Söffker

University of Duisburg-Essen, Duisburg, Germany

Paper No. DSCC2015-9897, pp. V002T23A007; 8 pages
  • ASME 2015 Dynamic Systems and Control Conference
  • Volume 2: Diagnostics and Detection; Drilling; Dynamics and Control of Wind Energy Systems; Energy Harvesting; Estimation and Identification; Flexible and Smart Structure Control; Fuels Cells/Energy Storage; Human Robot Interaction; HVAC Building Energy Management; Industrial Applications; Intelligent Transportation Systems; Manufacturing; Mechatronics; Modelling and Validation; Motion and Vibration Control Applications
  • Columbus, Ohio, USA, October 28–30, 2015
  • Conference Sponsors: Dynamic Systems and Control Division
  • ISBN: 978-0-7918-5725-0
  • Copyright © 2015 by ASME


The paper introduces into the concept of model-based force estimation of flexible structures with impacts. The advantage of using extended PI-Observer (MAPIO) in comparison with the well-known PI-Observer is investigated with respect to the reconstruction of a complex nonlinear unknown input. Therefore a clamped beam example is considered. The task of the observer scheme is to estimate the tip position and the effecting input as unknown input. This task is also realized in the presence of measurement noise. The reconstruction of complex nonlinear spring behavior is performed to prove the performance of MAPI-Observer in comparison to PI-Observer.

Copyright © 2015 by ASME



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