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 11 of 11 for “"Inertial Frame"”.
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Design of active suspension control based upon use of tubular linear motor and quarter-car model
… a reference built off a model that incorporated inertial-frame damping attached to the sprung mass. The outcome of this comparison was that low-frequency disturbances were attenuated better when tracking a zero reference, but the reference relaxation introduced by the inertialframe damping model …
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Vision-based Autonomous Navigation using Moon and Earth images
… orientation and position of the spacecraft in an inertial frame. And last, best fitting of the gathered position data with a newly developed algorithm based on Bézier functions. Each of these parts are discussed in detail. Results show that the image processing algorithm developed is capable to …
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High-accuracy distributed sensor time-space-position information system for captive-carry field experiments
… information of the target relative to a fixed inertial coordinate system. The architecture efficiently integrates the information from an inertial navigation system (INS), a global positioning system (GPS) and any number of distributed RF sensors which may be located onboard a captive-carry …
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Analyzing and monitoring GRACE-FO star camera performance in a changing environment
… inaccurate transformations from the spacecraft frame to the inertial frame. The primary attitude determination sensors are the three star cameras on board each GRACE-FO satellite, and errors in their measurements stem from star tracker performance, on-ground measurement of the alignments between …
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Tune-out Wavelength Measurement and Gyroscope Using Dispersion Compensation in an Atom Interferometer
… rate of the laboratory with respect to an inertial frame of reference. I also describe how we created conditions which improve the accuracy of tune out wavelength measurements. These measurements are important because they serve as a benchmark test for atomic structure calculations of line …
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Modeling and Approximation of Nonlinear Dynamics of Flapping Flight
… the robotic systems to be anchored in an inertial frame, the robotic equations of motion are well understood, and we can focus attention on flapping wing aerodynamics for such nonlinear systems. We study nonlinear modeling, identification, and control problems that feature the above …
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Solar radiation pressure, drag and gravitational effects on a dust particle in Earth orbit
… The model is developed in an Earth-Centric Inertial frame, where the Sun and the Moon are averaged to lie in the ecliptic plane with an obliquity of 23.6 degrees. None of the effects of perturbation are averaged, thus this study can provide the entire set of initial orbital elements of …
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Vision Based Guidance and Flight Control in Problems of Aerial Tracking
… relative position in the follower's body frame via the target's apparent size, which is assumed to be constant, but otherwise unknown to the follower. The formulation of the relative dynamics in the inertial frame requires the knowledge of the follower's orientation angles, which are …
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Hydrodynamic added mass determination and attitude estimation of the Seahog - a remotely-operated underwater vehicle
… vehicle is its angular position relative to an inertial frame. Using the standard format for underwater vehicles, these angles are typically known as roll (about an axis along the surge direction of the vehicle), pitch (about an axis along the sway direction of the vehicle) and yaw (about an …
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Magneto-mechanical systems for ultra-low frequency data transmission: Dynamics, losses, and driving mechanisms
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-12-01
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Υπολογιστική ανάλυση εξωτερικής βλητικής. Διερεύνηση αεροδυναμικής συμπεριφοράς αξονοσυμμετρικών βλημάτων σε ελεύθερη ατμοσφαιρική πτήση
Η σύγχρονη επιστήμη της εξωτερικής βλητικής έχει εξελιχθεί ως εξειδικευμένος κλάδος της δυναμικής των στερεών σωμάτων, που κινούνται υπό την επίδραση της βαρύτητας και των αεροδυναμικών δυνάμεων και ροπών. Στην παρούσα διατριβή μελετάται η προσομοίωση του δυναμικού μοντέλου ατμοσφαιρικής τροχιάς …