Browsing by Author "Junkins, John L."
Now showing items 1-20 of 61
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Kim, Dong Hoon (2013-08-01)Most spacecraft are designed to be maneuvered to achieve pointing goals. This is generally accomplished by designing a three-axis control system. This work explores new maneuver strategies when only two control inputs are ...
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Flewelling, Brien Roy (2012-07-16)A fundamental problem in spacecraft proximity operations is the determination of the 6 degree of freedom relative navigation solution between the observer reference frame and a reference frame tied to a proximal body. For ...
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Woodbury, Drew Patton (2012-02-14)Parametric uncertainty is one of many possible causes of divergence for the Kalman filter. Frequently, state estimation errors caused by imperfect model parameters are reduced by including the uncertain parameters as states ...
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Tandale, Monish Deepak (Texas A&M University, 2007-09-17)The adaptive dynamic inversion control methodology uses dynamic inversion to calculate the control, and adaptation to compensate for the errors in the inversion due to model uncertainties. Traditionally, adaptive control ...
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Adaptive inverse modeling of a shape memory alloy wire actuator and tracking control with the model Koh, Bong Su (2009-06-02)It is well known that the Preisach model is useful to approximate the effect of hysteresis behavior in smart materials, such as piezoactuators and Shape Memory Alloy(SMA) wire actuators. For tracking control, many researchers ...
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Swanzy, Michael John (Texas A&M University, 2007-04-25)This research analyzes and demonstrates the local position determination problem on Earth using a novel instrument, the Compass Star Tracker. Special focus is given to the theoretical development of the mathematics of local ...
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Morris, Jeffery C. (2010-01-14)Automated spacecraft docking is a concept of operations with several important potential applications. One application that has received a great deal of attention recently is that of an automated docking capable unmanned ...
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Satak, Neha (2013-05-06)The purpose of this dissertation is to apply behavior learning concepts to incomplete-information continuous time games. Realistic game scenarios are often incomplete-information games in which the players withhold ...
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Menon, Ramesh Gopal (Texas A&M University. Libraries, 1992)This dissertation presents a family of computationally efficient methods for the simulation of large, flexible multibody systems. Non-recursive order N formulations for the transient dynamic analysis of multibody systems ...
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Davis, Jeremy John (2011-10-21)Constellation reconfi guration consists of transforming an initial constellation of satellites into some final constellation of satellites to maintain system optimality. Constellations with phased deployment, changing ...
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Weitz, Lesley A. (2010-01-16)This dissertation addresses the design and stability analysis of decentralized, cooperative control laws for multivehicle systems. Advances in communication, navigation, and surveillance systems have enabled greater autonomy ...
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Kumar, Mrinal (2011-02-22)This dissertation addresses design and analysis aspects of stochastic dynamical systems using Fokker-Planck equation (FPE). A new numerical methodology based on the partition of unity meshless paradigm is developed to ...
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Karimi, Reza (2012-07-16)A perfect duality exists between the problem of space-based orbit determination from line-of-sight measurements and the problem of designing an interplanetary autonomous navigation system. Mathematically, these two problems ...
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Coimbatore Subramanian, Shankar Ram (Texas A&M University, 2007-09-17)This dissertation deals with the development of a model-based diagnostic system for air brake systems that are widely used in commercial vehicles, such as trucks, tractor-trailers, buses, etc. The performance of these brake ...
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Parish, Julie Marie Jones (2009-05-15)Linearized equations of motion are important in engineering applications, especially with respect to stability analysis and control design. Traditionally, the full, nonlinear equations are formed and then linearized about ...
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Discretization and Approximation Methods for Reinforcement Learning of Highly Reconfigurable Systems Lampton, Amanda K. (2010-07-14)There are a number of techniques that are used to solve reinforcement learning problems, but very few that have been developed for and tested on highly reconfigurable systems cast as reinforcement learning problems. ...
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Gunnam, Kiran Kumar (Texas A&M University, 2004-09-30)Spacecraft missions such as spacecraft docking and formation flying require high precision relative position and attitude data. Although Global Positioining Systems can provide this capability near the earth, deep space ...
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Sengupta, Prasenjit (Texas A&M University, 2007-04-25)The study of satellite relative motion has been of great historic interest, primarily due to its application to rendezvous, intercept, and docking maneuvers, between spacecraft in orbit about gravitational bodies, such as ...
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Kim, Euisok (Texas A&M University. Libraries, 1993)The purpose of this research is to investigate the dynamics of a tethered satellite system in which the flexibility of the tether is considered and to design control laws for the deployment and retrieval of the tethered ...
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Yan, Hui (Texas A&M University, 2006-10-30)In this dissertation the solutions of the dynamics and real-time optimal control of magnetic attitude control and formation flying systems are presented. In magnetic attitude control, magnetic actuators for the time-optimal ...