Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"Spacecraft control"”.
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Bandwidth-limited robust nonlinear spacecraft control
Robust large-angle spacecraft pointing and tracking by Variable Structure Control (VSC) are developed. The control of multiaxial attitude dynamics is a highly nonlinear problem, which can be resolved by exact feedback linearization with respect to attitude variables. This requires exact …
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Incorporating modern development and evaluation techniques into the creation of large-scale, spacecraft control software
… This dissertation outlines a new approach to spacecraft software development that focuses on incorporating modem software engineering techniques into the spacecraft domain including (1) a product-line approach to the software development enterprise and (2) a software architecture-centric …
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A multi-vehicle testbed and interface framework for the development and verification of separated spacecraft control algorithms
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2002.
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Output feedback rotational maneuvers and vibration damping of Nasa Scole system by inversion theory
… maneuver and vibration stabilization of NASA Spacecraft Control Laboratory Experiment System (SCOLE). The mathematical model of SCOLE System includes the dynamical equations for rigid body slew maneuver and three dimensional vibration of the rigid space shuttle, the flexible beam and the …
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Adaptive Control of VSCMGs for Satellite Attitude Tracking
… to achieve these requirements, new satellite control algorithms are required. Adaptive control offers a strong solution to the uncertainty problem. This thesis develops several adaptive control algorithms for satellites equipped with momentum management devices. Momentum management devices …
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Reconfigurable thruster selection algorithms for aggregative spacecraft systems
… systems launch to orbit as completely assembled spacecraft stowed within a single launch vehicle. However, there is demand for large space systems (e.g., large space telescopes, fuel depots, space habitats, and solar power stations) that are overly limited by the lifting capability and fairing …
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Fine-pointing system development and photometric precision assessment for the transiting exoplanet survey satellite
… including both instrument performance as well as spacecraft control and dynamics, showing that the relevant closed-loop pointing requirements at multiple time scales are met with margin. The performance of the system over longer time scales and in temporary camera unavailability periods was also …
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Modeling Cable Harness Effects on Space Structures
… to the high mass ratio of cables on lightweight spacecraft, the dynamic response of cabled structures must be understood and modeled for accurate spacecraft control. Models of cable behavior are reviewed and categorized into three major classes consisting of thin rod models, semi-continuous …
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Adaptive Control Combined with Integral Concurrent Learning for Trajectory Tracking Near Asteroids
… Unlike motion around large celestial bodies, spacecraft dynamics near small, rotating asteroids are dominated by weak, highly irregular gravity fields. While full characterization of an asteroid’s shape enables high-fidelity gravitational modeling, such information is typically unavailable in …
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Investigation of Nonlinear Control Strategies Using GPS Simulator And Spacecraft Attitude Control Simulator
In this dissertation, we discuss the Distributed Spacecraft Attitude Control System Simulator (DSACSS) testbed developed at Virginia Polytechnic Institute and State University for the purpose of investigating various control techniques for single and multiple spacecraft. DSACSS is comprised of two …
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Stochastic singular control: existence, characterization and approximation of solutions in cost minimization problems and games
Stochastic singular control models (such as optimization problems, games and mean field games) refer to a class of problems in which some agents want to optimize a certain performance criterion by acting in a random environment which evolves in continuous time, and in which the effect of the …
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Design coupling analysis in multidisciplinary design optimization and control co-design
… multidisciplinary design optimization (MDO) and control co-design (CCD) problem formulation. By performing design coupling analysis (DCA), problem formulations that reduce the computational expense associated with solving MDO and CCD problems can be identified. Furthermore, the use of design …
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Adaptive Control Applied to the Cal Poly Spacecraft Attitude Dynamics Simulator
The goal of this thesis is to use the Cal Poly Spacecraft Attitude Dynamics Simulator to provide proof of concept of two adaptive control theories developed by former Cal Poly students: Nonlinear Direct Model Reference Adaptive Control and Adaptive Output Feedback Control. The Spacecraft Attitude …
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Applied Mass Properties Identification Method to the Cal Poly's Spacecraft Simulator
<p>The Cal Poly Spacecraft Simulator is currently being developed for future testing and verifying theoretical control applications. This paper details the effort to balance the platform and remove undesired external torque from the system using System Identification technique developed by Patrick …
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Viability under adversity: Safe self-organizing control of systems in the unknown
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Simulation and optimization of spacecraft re-entry Trajectories
Parameter optimal control has the advantage of often being easier and faster to solve than general optimal control methods, and may be better suited to the task of spacecraft re-entry trajectory optimization. In this thesis, a parameter optimal control algorithm is implemented in MATLAB® to …