Design of feedback-controlled wide-band seismographs with respect to undesired side-effects

Details Design of feedback-controlled wide-band seismographs with respect to undesired side-effects Design of feedback-controlled wide-band seismographs with respect to undesired side-effects

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pepi...18...58t&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 18, Issue 2, p. 58-63.

Physics

Scientific paper

Various modifications of a displacement-sensing seismometer controlled by negative first-order low-pass, first-order high-pass and second-order high-pass feedback are analysed. Undesired side-effects of the frequency-limited feedback on the response of the closed-loop system are investigated. Rules for ``optimum tuning'' of systems with a flat-displacement or flat-velocity response in a desired period range are given.

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