Search Results - "Washington, Gregory N."

Control of modulated vibration using an enhanced adaptive filtering algorithm based on model-based approach by Kim, Byeongil, Washington, Gregory N., Singh, Rajendra

“…Conventional adaptive filtering algorithms, typically limited to the control of single or multiple sinusoids, are not appropriate to control modulated…”
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Modeling and Reduction of Centrifuging in Magnetorheological (MR) Transmission Clutches for Automotive Applications by Neelakantan, Vijay A., Washington, Gregory N.

“…Conventional shear mode transmission clutches using magnetorheological fluids (MRFs) can be either disc-shaped or cylindrical. The major drawbacks of these…”
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Energy band engineering for photoelectrochemical etching of GaN/InGaN heterostructures by Ramesh, Prashanth, Krishnamoorthy, Sriram, Rajan, Siddharth, Washington, Gregory N.

“…Photoelectrochemical (PEC) etching is a rapid and inexpensive means of etching GaN, InGaN, and related materials for micro-electro-mechanical systems (MEMS)…”
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Control of incommensurate sinusoids using enhanced adaptive filtering algorithm based on sliding mode approach by Kim, Byeongil, Washington, Gregory N, Singh, Rajendra

“…This article focuses on the active control of a combination of incommensurate sinusoids and its subsets. Two sliding mode control (SMC) algorithms are proposed…”
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Control Design of Electrically Assisted Boosting Systems for Diesel Powertrain Applications by Glenn, Bradley Charles, Upadhyay, Devesh, Washington, Gregory N

“…In this paper, we investigate the control design problem associated with the use of an electrically assisted turbo-charger (TC) for a modern Diesel engine…”
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Control and hysteresis reduction in prestressed curved unimorph actuators using model predictive control by Kim, Byeongil, Washington, Gregory N, Yoon, Hwan-Sik

“…Curved piezoceramic unimorph actuators exhibit strong nonlinearities due to their special architecture that enables large motion amplification. Among these…”
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Model Predictive Control of a Two Stage Actuation System using Piezoelectric Actuators for Controllable Industrial and Automotive Brakes and Clutches by Neelakantan, Vijay A., Washington, Gregory N., Bucknor, Norman K.

“…High bandwidth actuation systems that are capable of simultaneously producing relatively large forces and displacements are required for use in automobiles and…”
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Modeling and Control of Single and Two Degree of Freedom Magnetorheological Fluid-based Haptic Systems for Telerobotic Surgery by Ahmadkhanlou, Farzad, Washington, Gregory N., Bechtel, Stephen E.

“…In this study, the authors develop haptic systems for telerobotic surgery exploiting MR fluids for semiactive force feedback. To investigate the full range of…”
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Vibration Control of Structural Systems using MR dampers and a `Modified' Sliding Mode Control Technique by Neelakantan, Vijay A., Washington, Gregory N.

“…Magnetorheological (MR) dampers are easily controlled by appropriately regulating the current through an electromagnet producing the necessary magnetic field…”
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Homogenized Strain Model for Ni—Mn—Ga Driven with Collinear Magnetic Field and Stress by Faidley, Leann E., Dapino, Marcelo J., Washington, Gregory N.

“…Prior experimental measurements by the authors demonstrated large reversible strains of ·0.41% along the [001] crystal direction of a cylindrical Ni…”
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Modulus Increase with Magnetic Field in Ferromagnetic Shape Memory Ni–Mn–Ga by Faidley, Leann E., Dapino, Marcelo J., Washington, Gregory N., Lograsso, Thomas A.

“…Ferromagnetic shape memory Ni–Mn–Ga has been shown to exhibit deformations of up to 9.5% when driven with quasistatic fields. This article is focused on the…”
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Design and evolution of a piezoelectrically actuated miniature swimming vehicle by Borgen, M.G., Washington, G.N., Kinzel, G.L.

“…This work details the design of a miniature swimming vehicle that propels itself through oscillations of a flexible fin mounted in the stern. The fin is driven…”
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Design and Construction of a Piezoelectric Point Actuated Active Aperture Antenna by Angelino, Marc R., Washington, Gregory N.

“…In this research, an antenna’s far field radiation pattern is controlled by controlling the shape of a sub reflector in a Cassegrain antenna system. The…”
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Reconfigurable contour beam-reflector antenna synthesis using a mechanical finite-element description of the adjustable surface by Theunissen, W.H., Yoon, H.T., Burnside, W.D., Washington, G.N.

“…A synthesis technique based on a mechanical finite-element (FEM) surface description of dual-offset reflector (DOSR) surfaces is described. This technique is…”
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Control of polishing of diamond films using microactuation and an atmospheric pressure plasma by Detrick, M.S., Washington, G.N., Subramaniam, V.V.

“…In this work, the diamond deposited by hot filament chemical vapor deposition (CVD) is polished using an atmospheric pressure plasma. In order to position the…”
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Modulus Increase with Magnetic Field in Ferromagnetic Shape Memory NiMnGa by Faidley, Leann E, Dapino, Marcelo J, Washington, Gregory N, Lograsso, Thomas A

“…Ferromagnetic shape memory NiMnGa has been shown to exhibit deformations of up to 9.5% when driven with quasistatic fields. This article is focused on the use…”
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Reconfigurable contour beam reflector antennas using adjustable subreflector and adjustable single feed by Theunissen, Wilhelmus H., Yoon, Hwan-Sik, Washington, Gregory N., Burnside, Walter D.

“…A synthesis technique and mechanical design for a reconfigurable contour beam dual‐offset‐reflector antenna for satellite application are described. Mechanical…”
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Mechanical finite element diffraction synthesis of reconfigurable contour beams from dual offset reflector antennas by Theunissen, W.H., Yoon, H.T., Washington, G.N., Burnside, W.D.

“…A mechanical finite element code is incorporated into a diffraction synthesis code to enable direct synthesis of a reconfigurable dual offset reflector…”
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