1,721,199 research outputs found
Output Feedback Control of Rotating Disk Vibrations
No full textOutput feedback control of rotating disk vibrations is investigated. A polynomial equation, which determines the closed-loop system poles, is derived in wave coordinates and the approximate solutions for each wave are provided. The closed-loop system characteristics are analyzed in relation to the P-D gains and the sensor-actuator location, utilizing the approximate solutions of the closed-loop poles. Analysis of the closed-loop system in case of the half-clamped disk is also performed, with the gains and location varied
In-situ Runout Identification in Active Magnetic Bearing System by Extended Influence Coefficient Method
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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