Sensitivity analysis of the discrete-to-continuous dynamic system transformation

S. D. Fassois*, K. F. Eman, S. M. Wu

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

A sensitivity analysis of the discrete-to-continuous transformation used in the 'indirect' modeling of continuous-time systems from sampled experimental data is presented. It is shown that small errors in the discrete-poles may yield large errors in corresponding continuous-time parameters, such as time-constants, natural frequencies, and damping factors, if very fast sampling is used. An important consequence of this phenomenon is the introduction of large errors in the modal parameter estimates of the lower frequency modes of a multiple degree-of=freedom system. In order to alleviate this problem appropriate sensitivity specifications are introduced and shown to lead to a lower bound on the allowable values of the sampling period.

Original languageEnglish (US)
Pages1103-1110
Number of pages8
StatePublished - 1988
EventProceedings of the USA-Japan Symposium on Flexible Automation - Crossing Bridges: Advances in Flexible Automation and Robotics - Minneapolis, MN, USA
Duration: Jul 18 1988Jul 20 1988

Conference

ConferenceProceedings of the USA-Japan Symposium on Flexible Automation - Crossing Bridges: Advances in Flexible Automation and Robotics
CityMinneapolis, MN, USA
Period7/18/887/20/88

ASJC Scopus subject areas

  • Engineering(all)

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