Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"transient disturbances"”.
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Time domain characteristics of human force control in rejection of transient disturbances during movement
Many tasks that humans successfully complete are more naturally represented in terms of their force requirements than their state (position or velocity) requirements. Yet the literature on force and timing is relatively underrepresented. This work was an attempt to clarify whether feedforward …
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Adaptive feedback technique for unmodeled disturbance rejection
… The objective is to provide damping for transient disturbances via the fixed controller and rejection of steady disturbances via the adaptive controller. This technique differs from other control techniques in that it does not require a measurement of an external signal coherent with the …
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Power system stability evaluation using the miniaturized A-C network analyzer
… not a system will remain in synchronism during transient disturbances. The mathematical expressions from which stability is determined are relatively simple in themselves; however, the direct solution of the simultaneous equations involved cannot easily be accomplished by conventional methods. …
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On the use of modern control theory for active structural acoustic control
… simply-supported plate subject to mechanical disturbances is investigated. For the case of light fluid loading, a finite element modelling approach is used to extend previous ASAC design methods. Vibration and acoustic controllers are designed for the plate. Comparison of the controller …
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The Interaction of a Transient Forward Axial Disturbance Flow With a Rotor
… revealed significant impacts resulting from transient disturbances designed to emulate realistic urban gust conditions. These disturbances notably affected the aerodynamic loading on the rotor blades, resulting in observable variations in thrust and torque.</p> <p>Additionally, a detailed …
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North American monsoon precipitation and its precursors: processes at the seasonal and diurnal scale
… Gulf of California. Over Arizona and New Mexico, transient disturbances, like tropical waves, were more important than the diurnal cycle to precipitation. Despite similar spatial distributions of precipitation, WRF, NARR, MERRA, and TRMM showed very different frequencies of light and heavy rain. …
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Lagrangian studies, circulation and mixing in the Southern Ocean
… dynamic variability the ACC exhibits by means of transient disturbances [Hughes, 2005] (such as mesoscale eddies) and subsequent mixing from Lagrangian trajectories. The distribution of eddy transport and intensity, the mixing of conservative quantities and ow dynamics through to the interaction …
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The Impact of Three Dimensional Flow Anisotropy and Transients on Turbulence Ingestion Noise in Open Rotors
… angle of attack. In the second configuration a transient disturbance is generated by an upstream wing body junction pitching from zero to 20 degree angle of attack . This disturbance is convected downstream and ingested into a rotor immersed in a wall boundary layer. In both cases flow …