Browsing by Author "Sinha, Subhash"

Now showing items 1-15 of 15

Analysis and Control of Dynamical Systems with Quasi-Periodic Coefficients

Sharma, Ashu (2019-05-08)

Parametrically excited linear systems with oscillatory coefficients have been generally modeled by Mathieu or Hill equations (periodic coefficients) because their stability and response can be determined by Floquét theory. ...

Characterization and Dynamic Analysis of Damping Effects in Composite Materials for High-Speed Flywheel Applications

Moreira, Alfonso (2007-05-15)

The directional mechanical properties of carbon fiber reinforced composite materials make them suitable for components of flywheel energy storage systems. Particularly the hub-rim interface is a component where fiber ...

Civil UAV Type Certification: DoD Mishap Analysis 2000-2009 and FAA Certification Roadmap

Hundley, Joshua (2012-08-29)

The Federal Aviation Administration (FAA) has issued memorandums which support the use of flight activities which can demonstrate that proposed operation can be conducted at an acceptable level of safety. This paper ...

Design Optimization and Health Monitoring for Multi-Directional Composite Flywheel Energy Storage Systems

Hai, Xin (2006-08-15)

Flywheels are used to store kinetic energy through the rotation of an inertial mass, which usually rotates at very high speeds. Generally, that energy can be extracted (using a motor-generator system) in the form of ...

A Feedback Linearization Approach for Panel Flutter Suppression with Piezolectric Actuation

Onawola, Oluseyi (2008-12-15)

A panel is subject to dynamic instability when induced aerodynamic loads under the supersonic/hypersonic environment result in a self-excited oscillation called panel flutter. The panel of an aircraft that flies at ...

A Fully Integrated Sensor Fusion Method Combining a Single Antenna GPS Unit with Electronic Stability Control Sensors

Ryan, Jonathan (2011-07-05)

This work presents a method for incorporating GPS (Global Positioning System) and standard roll stability control (RSC) sensors into the electronic stability control (ESC) and RSC systems. It is an adaptation of the very ...

Health Monitoring for Flywheel Rotors Supported By Active Magnetic Bearings

Barber, Kelly (2006-08-15)

Magnetic bearings are not a new technology in themselves, yet the control and implementation of such devices is still a budding science. Magnetic bearings are particularly attractive for some applications because of the ...

Heuristic Optimization Methods for the Characterization of Dynamic Mechanical Properties of Composite Materials

Hornig, Klaus (2007-05-15)

Generally speaking, of the fundamental dynamic mechanical properties - mass, damping, and stiffness, damping is usually the most difficult to quantify. This is perhaps particularly true for composite materials which tend ...

Passive Pendulum Balancer for Rotor Systems

Horvath, Roland (2006-05-15)

Automatic, passive self-balancing systems are important tools for reducing the effects of synchronous vibration in a variety of rotating machinery. Such systems are ideally capable of precise balancing, subject to certain ...

A Real-time Implementation of Rendering Light Field Imagery for Generating Point Clouds in Vision Navigation

Rose, Christopher (2017-12-11)

This dissertation develops a real-time implementation of rendering perspective and refocused imagery from a light field camera for the generation of sparse point clouds using a traditional stereo camera approach, a ...

Roll & Bank Estimation Using GPS/INS and Suspension Deflections

Brown, Lowell (2012-07-25)

This thesis presents three methods that provide and estimate of road bank by decoupling the vehicle roll due to dynamics and roll due road bank. Suspension deflection measurements were used to provide a measurement of the ...

Simplification and Order Reduction of Parametrically Excited Nonlinear Dynamical Systems

Gabale, Amit (2010-08-11)

System simplification is, by far, the most common theme behind various techniques available for the analysis and controller design of nonlinear dynamic systems. One such technique that is widely used by engineers is the ...

Simultaneous Localization Auto-Calibration and Mapping of Ground Vehicles

Britt, Jordan (2016-06-17)

This dissertation advances the state of the art of sensor auto-calibration by presenting a generic solution and analysis to the 3D sensor auto-calibration problem, as well as to the 2D simultaneous localization and ...

Some Techniques in the Control of Dynamic Systems with Periodically Varying Coefficients

Zhang, Yandong (2007-12-15)

The goal of this dissertation is to develop control system design methods for dynamic systems with time periodic coefficients. These systems arise naturally in many branches of science and engineering. As a rule, time ...

Vibration and Acoustical Properties of Sandwich Composite Materials

Li, Zhuang (2006-05-15)

In applications where the use of lightweight structures is important, the introduction of a viscoelastic core layer, which has high inherent damping, between two face sheets, can produce a sandwich structure with high ...