000015927 001__ 15927
000015927 005__ 20161115135333.0
000015927 04107 $$aeng
000015927 046__ $$k2013-06-12
000015927 100__ $$aCaterino, N.
000015927 24500 $$aResponse Time of Mr Dampers for Seismic Semiactive Control: Experimental Measures and Possible Prediction

000015927 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015927 260__ $$bNational Technical University of Athens, 2013
000015927 506__ $$arestricted
000015927 520__ $$2eng$$aA wide experimental activity on two prototype magnetorheological (MR) semiactive (SA) dampers manufactured in Germany was conducted during an Italian research project, and it was partially devoted to investigate their promptness in the response. The experimental campaign has been performed on two properly designed setup configurations, by considering two different behaviours for the tested MR devices: a 'passive' behaviour (i.e., by keeping constant the feeding current during the entire test), or a 'semi-active' one, by driving them through an energy-based control algorithm. The experimental analysis of the devices’ response time is presented in detail: it is shown how the control delays are strongly dependent on the effectiveness of the electric part of the control hardware, generally being less than 10 ms if special care is paid in designing the whole control chain. On the base of the experimental results, simple relationships are proposed to be assumed for the prediction of the amount of delay to be expected when a given change of current is going to be commanded, as well as the probability distributions of such delays calculated by fitting statistical available data. These distributions can be helpful for taking into account, in a refined model of a semiactively controlled structure, the probability of occurrence of expected delays and/or to calibrate the compensation techniques included in some SA control algorithms, aiming at reducing the harmful effects these unavoidable delays may cause on the control effectiveness in terms of structural response reduction.

000015927 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015927 653__ $$aSemi-Active Control; Magnetorheological Dampers; Control Delays; Response time.

000015927 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015927 720__ $$aCaterino, N.$$iSpizzuoco, M-C.
000015927 8560_ $$ffischerc@itam.cas.cz
000015927 8564_ $$s486931$$uhttps://invenio.itam.cas.cz/record/15927/files/1716.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-RS 15 PASSIVE ACTIVE AND SEMI-ACTIVE DEVICES
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000015927 962__ $$r15525
000015927 980__ $$aPAPER