Search Results - "Leopoldo P.R. de Oliveira"

Multichannel feedforward control schemes with coupling compensation for active sound profiling by Mosquera-Sánchez, Jaime A., Desmet, Wim, de Oliveira, Leopoldo P.R.

“…Active sound profiling includes a number of control techniques that enables the equalization, rather than the mere reduction, of acoustic noise. Challenges may…”
Get full text

Modular modeling approach for FDM printed structures and piezo disks for metamaterial design by Rodrigues, Gabriel K., Silva, Maíra M. da, Oliveira, Leopoldo P.R. de

“…Abstract Research in metamaterials has recently gained interest in the field of noise and vibration control. The ability of creating band gap zones with…”
Get full text

Integrating structural and input design of a 2-DOF high-speed parallel manipulator: A flexible model-based approach by da Silva, Maíra M., de Oliveira, Leopoldo P.R., Brüls, Olivier, Michelin, Micaël, Baradat, Cédric, Tempier, Olivier, De Caigny, Jan, Swevers, Jan, Desmet, Wim, Van Brussel, Hendrik

“…This paper discusses the integrated design of parallel manipulators, which exhibit varying dynamics. This characteristic affects the machine stability and…”
Get full text

A State-Space Modeling Approach for Active Structural Acoustic Control by Leopoldo P.R. de Oliveira, Paulo S. Varoto, Paul Sas, Wim Desmet

“…The demands for improvement in sound quality and reduction of noise generated by vehicles are constantly increasing, as well as the penalties for space and…”
Get full text

Lightweight decorated membranes as an aesthetic solution for sound insulation panels by Sampaio, Lucas Y.M., Cerântola, Pedro C.M., de Oliveira, Leopoldo P.R.

“…The need for energy-efficient vehicles and machines often drives performance design towards mass reduction, harming noise and vibration. Metamaterials are…”
Get full text

Combining strain and acceleration measurements for random force estimation via Kalman filtering on a cantilevered structure by Álvarez-Briceño, Ricardo, de Oliveira, Leopoldo P.R.

“…Several engineering applications demand in-operation dynamic forces exerted on structural components to be modeled, however there are cases in which both…”
Get full text

Membrane smart metamaterials for unidirectional wave propagation problems by Sampaio, Lucas Y.M., Rodrigues, Gabriel K., Mosquera-Sánchez, Jaime A., De Marqui, Carlos, de Oliveira, Leopoldo P.R.

“…Acoustic metamaterials can be realised by the periodic distribution of features that vary from rigid inclusions and discontinuous cuts to sub-wavelength…”
Get full text

Validation of turbulence induced vibration design guidelines in a normal triangular tube bundle during two-phase crossflow by Álvarez-Briceño, Ricardo, Kanizawa, Fabio Toshio, Ribatski, Gherhardt, de Oliveira, Leopoldo P.R.

“…The present paper addresses an experimental investigation on flow-induced vibration for air–water flow across a normal triangular tube bundle, with transverse…”
Get full text

Dynamic response of a pipe with geometrical restriction subjected to gas-liquid internal flow by Alegría, Luis F.A., Ortiz-Vidal, L. Enrique, Bolivar, Johann E.C., Álvarez-Pacheco, C.E., de Oliveira, Leopoldo P.R., Rodriguez, Oscar M.H.

“…Due to the potential hazard of deepwater oil exploration, the Brazilian industry has an ever-increasing concern for reliability during hydrocarbon production…”
Get full text

Updated results on hydrodynamic mass and damping estimations in tube bundles under two-phase crossflow by Álvarez-Briceño, Ricardo, Kanizawa, Fabio Toshio, Ribatski, Gherhardt, de Oliveira, Leopoldo P.R.

“…•Experimental study of dynamic parameters during two-phase crossflow in a tube bundle.•Hydrodynamic mass and two-phase damping results agree with data in open…”
Get full text

A multichannel amplitude and relative-phase controller for active sound quality control by Mosquera-Sánchez, Jaime A., Desmet, Wim, de Oliveira, Leopoldo P.R.

“…The enhancement of the sound quality of periodic disturbances for a number of listeners within an enclosure often confronts difficulties given by cross-channel…”
Get full text

A multi-harmonic amplitude and relative-phase controller for active sound quality control by Mosquera-Sánchez, Jaime A., de Oliveira, Leopoldo P.R.

“…Current active sound quality control systems aim at dealing with the amplitude level of the primary disturbance, e.g. sound pressure, forces, velocities and/or…”
Get full text

Active sound quality control of engine induced cavity noise by de Oliveira, Leopoldo P.R., Janssens, Karl, Gajdatsy, Peter, Van der Auweraer, Herman, Varoto, Paulo S., Sas, Paul, Desmet, Wim

“…Active control solutions appear to be a feasible approach to cope with the steadily increasing requirements for noise reduction in the transportation industry…”
Get full text

NEX-LMS: A novel adaptive control scheme for harmonic sound quality control by de Oliveira, Leopoldo P.R., Stallaert, Bert, Janssens, Karl, Van der Auweraer, Herman, Sas, Paul, Desmet, Wim

“…This paper presents a novel adaptive control scheme, with improved convergence rate, for the equalization of harmonic disturbances such as engine noise. First,…”
Get full text

A State-Space Modeling Approach for Active Structural Acoustic Control by de Oliveira, Leopoldo P.R., Varoto, Paulo S., Sas, Paul, Desmet, Wim

“…The demands for improvement in sound quality and reduction of noise generated by vehicles are constantly increasing, as well as the penalties for space and…”
Get full text