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- Acousto-Optic Bragg Diffractions - normalized space (1)
- Acousto-Optic Bragg diffraction with frequencies and input angle dependencies (1)
- Acousto-Optic Bragg diffraction-Analytical and Numerical solution for Four-order (1)
- Acousto-Optic with frequency and angle dependencies (1)
- An Exact Analysis for Four-Order Acousto-Optic Bragg Diffraction (1)
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- Electrical DC-link VSCF power systems (1)
- Insulated gate bipolar transistors (1)
- Normalized frequency and normalized angle variations (1)
- Passive filters (1)
- Power electronics (1)
- Power inverters (1)
- Pulse-width-modulation (1)
- Total harmonic distortion (1)
- Transport-category aircraft electrical power systems (1)
- Tuning of PI controllers (1)
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Articles 1 - 3 of 3
Full-Text Articles in Signal Processing
Design Of Dc-Link Vscf Ac Electrical Power System For The Embraer 190/195 Aircraft, Eduardo Francis Carvalho Freitas, Nihad E. Daidzic
Design Of Dc-Link Vscf Ac Electrical Power System For The Embraer 190/195 Aircraft, Eduardo Francis Carvalho Freitas, Nihad E. Daidzic
Journal of Aviation Technology and Engineering
A proposed novel DC-Link VSCF AC-DC-AC electrical power system converter for Embraer 190/195 transport category airplane is presented. The proposed converter could replace the existing conventional system based on the CSCF IDGs. Several contemporary production airplanes already have VSCF as a major or backup source of electrical power. Problems existed with the older VSCF systems in the past; however, the switched power electronics and digital controllers have matured and can be now, in our opinion, safely integrated and replace existing constant-speed hydraulic transmissions powering CSCF AC generators. IGBT power transistors for medium-level power conversion and relatively fast efficient switching are …
An Exact Analysis For Four-Order Acousto-Optic Bragg Diffraction Which Incorporates Both Incident Light Angle And Sound Frequency Dependencies, Adeyinka Sunday Ademola
An Exact Analysis For Four-Order Acousto-Optic Bragg Diffraction Which Incorporates Both Incident Light Angle And Sound Frequency Dependencies, Adeyinka Sunday Ademola
Electrical Engineering Theses
This thesis extends the prior work which produced an exact solution to the four-order acousto-optic (AO) Bragg cell with assumed fixed center frequency and with exact Bragg angle incident light. The extension predicts the model that incorporates the dependencies of both the input angle of light and the sound frequency. Specifically, a generalized 4th order linear differential equation (DE), is developed from a simultaneous analysis of four coupled AO system of DEs. Through standard methods, the characteristic roots, which requires solving a quartic equation, is produced. Subsequently, a derived system of homogeneous solutions, which absorbs the roots obtained using …
System-Layout-Dependent Thermally Induced Solder Stress & Reliability Implications, Ange C. Iradukunda
System-Layout-Dependent Thermally Induced Solder Stress & Reliability Implications, Ange C. Iradukunda
Mechanical Engineering Undergraduate Honors Theses
Electronic flip chip assemblies consist of dissimilar component materials, which exhibit different CTE. Under thermal cyclic operating conditions, this CTE mismatch produces interfacial and interconnect stresses, which are highly dependent on system layout. In this paper, sensitivity analyses are performed using ANSYS FEA to establish how the proximity and arrangement of neighboring devices affect interconnect stress. Flip chip alignment modes ranging from edge-to-edge to corner-to-corner are studied. Results of these FEA studies, demonstrated that closely packing devices together has the effect of making them act as one. This results in a significant increase in the thermomechanical stresses induced on peripheral …