Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Acoustics, Dynamics, and Controls (2)
- Physical Sciences and Mathematics (2)
- Aerodynamics and Fluid Mechanics (1)
- Aerospace Engineering (1)
- Applied Mathematics (1)
-
- Applied Mechanics (1)
- Chemical Engineering (1)
- Computational Engineering (1)
- Computer-Aided Engineering and Design (1)
- Control Theory (1)
- Controls and Control Theory (1)
- Electrical and Computer Engineering (1)
- Fluid Dynamics (1)
- Industrial Engineering (1)
- Navigation, Guidance, Control, and Dynamics (1)
- Operations Research, Systems Engineering and Industrial Engineering (1)
- Physics (1)
- Systems Engineering and Multidisciplinary Design Optimization (1)
- Transport Phenomena (1)
Articles 1 - 4 of 4
Full-Text Articles in Automotive Engineering
Filtered-Dynamic-Inversion Control For Unknown Minimum-Phase Systems With Unknown Relative Degree, Sumit Suryakant Kamat
Filtered-Dynamic-Inversion Control For Unknown Minimum-Phase Systems With Unknown Relative Degree, Sumit Suryakant Kamat
Theses and Dissertations--Mechanical Engineering
We present filtered-dynamic-inversion (FDI) control for unknown linear time-invariant systems that are multi-input multi-output and minimum phase with unknown-but-bounded relative degree. This FDI controller requires limited model information, specifically, knowledge of an upper bound on the relative degree and knowledge of the first nonzero Markov parameter. The FDI controller is a single-parameter high-parameter-stabilizing controller that is robust to uncertainty in the relative degree. We characterize the stability of the closed-loop system. We present numerical examples, where the FDI controller is implemented in feedback with mathematical and physical systems. The numerical examples demonstrate that the FDI controller for unknown relative degree …
Characterization Of Rotary Bell Atomizers Through Image Analysis Techniques, Jacob E. Wilson
Characterization Of Rotary Bell Atomizers Through Image Analysis Techniques, Jacob E. Wilson
Theses and Dissertations--Mechanical Engineering
Three methods were developed to better understand and characterize the near-field dynamic processes of rotary bell atomization. The methods were developed with the goal of possible integration into industry to identify equipment changes through changes in the primary atomization of the bell. The first technique utilized high-speed imaging to capture qualitative ligament breakup and, in combination with a developed image processing technique and PIV software, was able to gain statistical size and velocity information about both ligaments and droplets in the image data. A second technique, using an Nd:YAG laser with an optical filter, was used to capture size statistics …
Analytical And Boundary Element Solutions Of Bulk Reacting Lined Ducts And Parallel-Baffle Silencers, Jundong Li
Analytical And Boundary Element Solutions Of Bulk Reacting Lined Ducts And Parallel-Baffle Silencers, Jundong Li
Theses and Dissertations--Mechanical Engineering
Lined silencers of various configurations are used to attenuate the noise from building HVAC equipment, gas turbines, and other machinery. First-mode analytical solutions are presented for sound attenuation along rectangular lined ducts, parallel-baffle silencers, and circular lined ducts. The sound absorptive lining is treated using a bulk property model. The analytical solutions entail solving a nonlinear characteristic equation in the transverse direction after the rigid-wall boundary condition is applied. The solution is compared to the boundary element solution and a local impedance analytical solution for several test cases.
Inkjet Printing: Facing Challenges And Its New Applications In Coating Industry, Sadegh Poozesh
Inkjet Printing: Facing Challenges And Its New Applications In Coating Industry, Sadegh Poozesh
Theses and Dissertations--Mechanical Engineering
This study is devoted to some of the most important issues for advancing inkjet printing for possible application in the coating industry with a focus on piezoelectric droplet on demand (DOD) inkjet technology. Current problems, as embodied in liquid filament breakup along with satellite droplet formation and reduction in droplet sizes, are discussed and then potential solutions identified. For satellite droplets, it is shown that liquid filament break-up behavior can be predicted by using a combination of two pi-numbers, including the Weber number, We and the Ohnesorge number, Oh, or the Reynolds number, Re, and the Weber number, …