An On-line Design and Simulation Procedure for the Development of Instationary or Nonlinear or Adaptive Systems

  1. Dr. K. Grassie2,
  2. Prof. Dr. E. Teuckhoff3,
  3. Prof. Dr. G. Wegner4,
  4. Prof. Dr. J. Hausselt5 and
  5. Prof. Dr. H. Hanselka6
  1. J. Melcher and
  2. A. Büter

Published Online: 27 APR 2006

DOI: 10.1002/3527607420.ch87

Functional Materials, Volume 13

Functional Materials, Volume 13

How to Cite

Melcher, J. and Büter, A. (2000) An On-line Design and Simulation Procedure for the Development of Instationary or Nonlinear or Adaptive Systems, in Functional Materials, Volume 13 (eds K. Grassie, E. Teuckhoff, G. Wegner, J. Hausselt and H. Hanselka), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527607420.ch87

Editor Information

  1. 2

    Philips Forschungslaboratorium, Postfach 500145, 52085 Aachen, Germany

  2. 3

    Siemens AG, Postfach 3240, 91050 Erlangen, Germany

  3. 4

    Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany

  4. 5

    Forschungszentrum Karlsruhe, Postfach 3640, 76201 Karlsruhe, Germany

  5. 6

    Institut für Mechanik, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39160 Magdeburg, Germany

Author Information

  1. German Aerospace Center (DLR), Institute of Structural Mechanics, Germany

Publication History

  1. Published Online: 27 APR 2006
  2. Published Print: 27 JUN 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527302543

Online ISBN: 9783527607426

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Keywords:

  • functional materials;
  • instationary system;
  • nonlinear system;
  • adaptive system;
  • on-line design;
  • simulation

Summary

This paper describes an on-line design and a simulation procedure that allows rapid prototyping of time-variant systems, instationary processes and non-linear structures like adaptives systems.

The proposed procedure is mainly based on digital MX filters whose coefficients vary with time in such a way that even structures can be modelled whose eigenvalues change very fast.

In this paper two examples are carried out:

Firstly an on-line or real-time system identification of activatable materials that are implemented into mechanical structures and secondly a brand-new on-line helicopter model that considers the structural dynamics, the aeroelasticity and the aerodynamics of the rotor blades.

Using these MX filter based models a decisive progress in R&D can be achieved:

Materials with time variant properties can be modelled, e.g. parameters and form of the constitutive equations can be derived.

Wind tunnel test of helicopters can be confirmed. Instationary processes can be interpreted. There is the possibility to get more understanding of the physics of non-linear and adaptive systems. The description of the proposed procedure is analytical, numerical and experimental.