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.
Results
Showing 1 to 20 of 87 for “"autonomous system"”.
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Machine learning and autonomous system for human gait analysis based on walk speed
… reduce hospital costs. Hence, the application of autonomous sensing systems to enhance everyday life of such population will be valuable and has been considered here. Recently, Microsoft Kinect v2 has been used for gait analysis systems, to perform data classification of gait pattern changes based …
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Protecting anonymity in the presence of autonomous system and internet exchange level adversaries
This thesis analyzes the threat of autonomous system (AS) and Internet exchange (IX) level adversaries on Tor, currently the most widely deployed and used anonymity overlay network. Of particular interest is the possibility of a single AS or IX point observing both the path from the client to the …
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Autonomous system safety: Towards targeted and scalable approaches for validation and behaviour analysis
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
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Vector-Galileon-Tensor theories of gravity
… with decreasing amplitude. We also obtain an autonomous system for the inflationary case. The general features of the phasemaps are given and the critical point is appropriately characterised. It is not possible to obtain an autonomous system for radiation and matter dominated epochs hence, we …
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Enhancing Trust in Autonomous Systems without Verifying Software
The complexity of the software behind autonomous systems is rapidly growing, as are the applications of what they can do. It is not unusual for the lines of code to reach the millions, which adds to the verification challenge. The machine learning algorithms involved are often "black boxes" where …
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The Duffing Oscillator And Linearization Techniques For Its Motion Constants
… of higher order nonlinear dynamic systems is really difficult. This can involve giving solutions with respect to time. Motion constants are another way of studying the behavior of the dynamic system. If the motion constant is known, solving the system is no longer needed to analyze …
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Integrating Timeliner and autonomous planning
Timeliner is used to automate tasks in a target system. Timeliner is capable of automating complex sequences of actions, but the desired actions must be planned out and understood in advance by human script-writers. This thesis presents the design, implementation, and demonstration of a prototype …
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Towards autonomous lunar navigation for in-situ resource utilization
… (UIUC). Teams in the LAC created an autonomous system to guide a lunar mining robot and map the Moon’s surface elevation. It was performed entirely on software in a custom simulator. This thesis provides a background on the competition, Illinois Kingfisher’s work during it, and …
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On the interaction of rate-induced and bifurcation-induced tipping in ecosystems
… nonlinear tipping phenomena in a bi-stable ecosystem model, defined as sudden and unexpected transitions from the herbivore-dominating equilibrium to the plant-only equilibrium, which are triggered by environmental changes represented by time-varying parameters [Scheffer et al. {\em Ecosystems} …
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Enabling Autonomy in Commercial Aviation: An Ontology and Framework for Automating Unmanned Aircraft Systems (UAS)
Autonomous air vehicles are rapidly gaining interest within the aviation industry with novel business cases such as urban air mobility, package delivery, and more. However, these increasingly autonomous systems come with increasingly numerous and complex inputs that software must handle. This …
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The Computational Kleinman-Newton Method in Solving Nonlinear Nonquadratic Control Problems
… non-quadratic optimal control problems in an autonomous system and a related iterative numerical method, the Kleinman-Newton method, for solving the problem. The thesis proves the local convergence of Kleinman-Newton method using the contraction mapping theorem and then describes how this …
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Integrated Microbattery Charger for Autonomous Systems
… a microbattery recharging circuit suitable for autonomous microsystems. The battery charger chosen for this design is a constant current battery charger. Two methods of regulating the constant-current are discussed. A published shunt regulator design is analyzed and is presented with …
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Stability of linear autonomous systems under regular switching sequences
… discuss the stability of a discrete-time linear autonomous system under regular switching sequences, whose switching sequences are generated by a Muller automaton. This system arises in various engineering problems such as distributed communication and automotive engine control. The asymptotic …
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Quantitative Approach and Departure Risk Assessment for Unmanned Aerial Systems
As the use of Unmanned Aerial Systems (UAS) becomes more common in both civilian/commercial and military applications, so too has the risk of injury to individuals and third parties on the ground. The purpose of this research is to further enhance methods currently in use for performing flight path …
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A theoretical and experimental study of modal interactions in resonantly forced structures
… weakly nonlinear analysis is used to derive the autonomous system of equations which describe the evolution of the amplitudes and phases of the internally resonant modes. These equations are obtained for primary- and secondary-resonant excitations. The excitation frequency or amplitude is used as …
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Continuous relaxation to over-constrained temporal plans
… humans fail to understand the capabilities of an autonomous system or its environmental limitations, they can jeopardize their objectives and the system by asking for unrealistic goals. The objective of this thesis is to enable consensus between human and autonomous system, by giving autonomous …
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Autonomous Aerial Drone Landing Site Selection on a Maritime Vessel
This thesis focuses on the development of an autonomous system capable of iden- tifying, tracking, and landing on suitable sites aboard a moving ship. Leveraging modifications to the Hazard-Aware Landing Optimization (HALO) algorithm, origi- nally designed for static terrain, the system integrates …
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Perception and Motion Planning for Autonomous Surface Vehicles in Aquaculture
… solution that will enable the Oystermaran to autonomously depart from its parked location, navigate to its destination, execute the flipping tasks, and return to a designated location with little to no human intervention. The details explored in this project and discussed in the thesis focus …
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Learning Large-scale Multi-agent Control with Safety Certificates
Multi-agent intelligence in autonomous systems has been fascinating roboticists for decades. The recent advances in machine learning has created unprecedented opportunities for achieving ultimate multi-agent intelligence and full autonomy in a data-driven way. However, a fundamental bottleneck of …
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