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 52 for “"Autonomous Control"”.
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An autonomous control system for a planetary micro-rover
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
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Autonomous control and membrane maintenance optimization of photovoltaic reverse osmosis systems
… This thesis describes an innovative approach to autonomously controlling and optimizing community scale PVRO systems by controlling membrane degradation due to fouling, using a self-optimizing condition based maintenance algorithm. Additionally, by exploiting the energy compliance of PVRO …
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Semi-autonomous control of multiple heterogeneous vehicles for intersection collision avoidance
This paper describes the design of a supervisory controller (supervisor) that manages multiple heterogeneous vehicles, i.e., multiple controlled and uncontrolled vehicles, to avoid intersection collisions. Two main problems are addressed: verification of the safety of all vehicles at an …
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Integrated micro fuel cells with on-board hydride reactors and autonomous control schemes
… hydrogen production/storage and an efficient control scheme that facilitates integration with a fuel cell membrane electrode assembly (MEA) are key elements for micro energy conversion. Millimeter-scale reactors (ca. 10 µL) have been developed, for hydrogen production through hydrolysis of …
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Characterization of side-slip dynamics in Land Rover LR3 for improved high speed autonomous control
In this thesis, the side slip control dynamics of the Land Rover LR3 platform are examined for autonomous control. As autonomy becomes implemented in high speed safety applications, the importance of an accurate model for the vehicle becomes crucial for obstacle avoidance and emergency maneuvers. …
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A unified framework for trajectory planning, threat assessment, and semi-autonomous control of passenger vehicles
… trajectory planning, threat assessment, and semi-autonomous control of passenger vehicles in hazard avoidance scenarios. The vehicle navigation task is formulated as a constrained optimal control problem with the constraints bounding a navigable region of the environment derived from forward …
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Machine learning for nuclear fission systems : preliminary investigation of an autonomous control system for the MGEP
… in computation and machine learning, through autonomous control systems which minimize human error. The MIT Graphite Exponential Pile (MGEP) has been selected as the basis of a realworld demonstration of such a system, because of its simple properties and inherent safety. This study evaluated …
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Supervisory Autonomous Control of Homogeneous Teams of Unmanned Ground Vehicles, with Application to the Multi-Autonomous Ground-Robotic International Challenge
… many different proposed methods for Supervisory Control of semi-autonomous robots. There have also been numerous software simulations to determine how many robots can be successfully supervised by a single operator, a problem known as fan-out, but only a few studies have been conducted using …
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Empirical study of the effect of stochastic variability on the performance of human-dependent flexible flow lines
… disruptions to the throughput rate. Current autonomous variability control approaches decentralise the autonomous decision allowing quick response in a dynamic environment. However, they have limitations, e.g., uncertainty that the decision is globally optimal and applicability to limited …
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A Microgrid Architecture With Multiple-Input DC/DC Converters: Applications, Reliability, System Operation, and Control
… to the proposed architecture operation and control are analyzed. Multiple-input converter power budget equations are derived and verified through simulations and experiments. Issues in distributed architectures, such as autonomous control, and fault detection and mitigation are also …
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ARDEE: A general agricultural robotic development and evaluation environment
… are used for developing and evaluating autonomous control and perception algorithms intended for agricultural applications. Unfortunately, there are many obstacles that can considerably hinder the development process, most notably the 7-8 months in which most crops are not in season. The …
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Directional Airflow for HVAC Systems
… The potential benefits of such a modification in control capabilities of the HVAC system in terms of improvements in the overall occupant thermal comfort and energy consumption of the HVAC system have been investigated via a simulation study and an experimental study. In the simulation study, an …
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Design, Fabrication, and Test of Chaotic Micromixers, Hydrogel Microvalves and pH Regulation Systems
… a hydrogel component is used as a pH sensor, controller, and valve, simultaneously. Oscillatory modulation of the flow was achieved, and the feasibility of autonomous control of pH in microsystems has been demonstrated.
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System Design Methodology and Implementation of Micro Aerial Vehicles
… market, by having the ability of full mission autonomous control, from waypoints trajectory optimization to position control and aircraft auto-stabilization, while maintaining a full systems take-off weight of not more than 50 g, in a tiny 10 by 10 by 2.5 cm package. The thesis details the …
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System controller hardware and embedded software for the Petite Amateur Navy Satellite (PANSAT)
… software of a digital computer that provides autonomous control of the PANSAT spacecraft. The system was designed for use during a two year mission in a low earth orbit. The computer uses an Intel M80C186XL running at 7.3728 MHz, 512 kbytes of error-detection and correction RAM, 64 kbytes of …
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Los Hijos Del Rey Benkos: Afro-Colombian Appropriation of A Historic Palenquero Identity and Its Legacy For Community Mobilization
… nations, but rather it involves having autonomous control over the economic, political, social and physical activities that take place on their ancestral lands. The second facet of the palenquero identity is the right to consultation before any legislation is passed and enacted which …
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A low-cost hybrid vision system for intelligent cruise control applications
… computerized and varying degrees of intelligent control has been integrated into automotive systems. A natural extension of this trend is full intelligent and autonomous control of vehicle by onboard computer systems. This thesis presents the design, development, and construction of a low-cost, …
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Fast incremental unit propagation by unifying watched-literals and local repair
… to a variety of fields including diagnosis, autonomous control, circuit testing, and software verification. In these applications, satisfiability problem solvers are often used to solve a large number of problems that are essentially the same and only differ from each other by incremental …
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Real-Time Implementation of Vision Algorithm for Control, Stabilization, and Target Tracking for a Hovering Micro-UAV
… to obtain experimental results of completely autonomous control of a hovering micro-UAV using a complete on-board vision system. The on-board vision and control system is composed of a Helios FPGA board, an Autonomous Vehicle Toolkit daughterboard, and a Kestrel Autopilot. The resulting …
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Provably safe design of driver-assist systems through hybrid automata with hidden modes
… step in the progression towards fully autonomous vehicles. It will allow human drivers to retain control of their vehicles while providing the guidance for drivers to apply the necessary inputs to prevent collisions before autonomous control becomes necessary. A formal approach to the …
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