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 20 of 111 for “"Vehicle systems"”.
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Hierarchical power management in vehicle systems
… (MPC) framework for energy management onboard vehicle systems. High performance vehicle systems such as commercial and military aircraft, on- and off-road vehicles, and ships present a unique control challenge, where maximizing performance requires optimizing the generation, storage, …
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Performance optimization for unmanned vehicle systems
Technological advances in the area of unmanned vehicles are opening new possibilities for creating teams of vehicles performing complex missions with some degree of autonomy. Perhaps the most spectacular example of these advances concerns the increasing deployment of unmanned aerial vehicles (UAVs) …
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Guidance, control and estimation of autonomous vehicle systems
… control and estimation algorithms for autonomous vehicle systems. The objective is to provide robust control and estimation algorithms for both single and multiple autonomous vehicles under realistic motion, sensing, and communication conditions such as uncertain dynamics, passive sensor, limited …
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Controller design for underwater vehicle systems with communication constraints
Real-time cooperation between autonomous vehicles can enable time-critical missions such as tracking and pursuit of a dynamic target or environmental feature, but relies on wireless communications. Underwater communication is almost exclusively accomplished through acoustics, which bring challenges …
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Control architectures for heterogeneous fleets of unmanned vehicle systems
La robotica in campo avionico, da 20 anni fa fino ad oggi, ha avuto una crescita incredibile. Le ragioni sono diverse, ma sicuramente, la motivazione fondamentale è data dallo sviluppo di sensori MEMS e microcontrollori sempre più economici e affidabili. Per quanto riguarda le caratteristiche …
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Human Interfaces for Cooperative Control of Multiple Vehicle Systems
… efficiently allocate multiple unmanned ground vehicles (UGVs) cooperating to accomplish timing-sensitive missions in an urban environment. The urban environment consists of obstacles and a hazardous region. The obstacles represent a "no-go zone" while the hazardous region represents a high-risk …
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Motion Coordination and Performance Analysis of Multiple Vehicle Systems
The last problem addressed is that of the deployment of an environment monitoring network of mobile sensors to improve the network lifetime and sensing quality. A distributed algorithm is presented that improves the system's performance starting from an initial deployment.
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Modeling human supervisory control in heterogeneous unmanned vehicle systems
… operator supervisory control of Unmanned Vehicle (UV) teams is likely to be a focal point of future research and development. Due to requirements for interoperability among UVs of varying attributes, heterogeneity in vehicle capabilities and tasks is likely to exist in future UV systems. …
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Controller design for underwater vehicle systems with communication constraints
Real-time cooperation between autonomous vehicles can enable time-critical missions such as tracking and pursuit of a dynamic target or environmental feature, but relies on wireless communications. Underwater, communication over distances beyond about one hundred meters is almost exclusively …
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Effect of control architectures on automated guided vehicle systems
Automated Guided Vehicle Systems (AGVSs) have been widely adopted by many low to medium manufacturing operations, particularly in Flexible Manufacturing Systems (FMS). The high degree of flexibility and control offered in vehicle routing has made AGVS a proven and viable material handling …
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Control Design for Long Endurance Unmanned Underwater Vehicle Systems
… controller design for an autonomous underwater vehicle (AUV) that explicitly handles the trade-off between reference tracking, agility, and energy efficient performance. AUVs have many sources of modeling uncertainty that impact the uncertainty in maneuvering performance. A robust control design …
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Towards Efficient Autonomous Vehicle Systems: A Multi-Layer Approach
… predictability, and scalability of autonomous vehicle (AV) systems by addressing critical challenges across system, application, and communication layers. At the system layer, a novel Extended Conflict Directed Graph (ECDG) model is introduced to enable dynamic lane assignment in unsignalized …
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A C-based simulation framework for automated guided vehicle systems
… a simulation framework for automated guided vehicle systems (AGVSs). The framework that was developed, AGVSF, uses the discrete, next-event simulation method and the C programming language. AGVSF consists of an organizational structure that provides for control of the execution of the …
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Design of automated guided vehicle systems using Petri net models
… models for the design of automatic guided vehicle systems (AGVs) available in the literature are limited to the computations of the fleet size and the design of the guide path layout. Another major design factor which affects the performance of an AGV system is the locations and the …
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Implementation of Design Failure Modes and Effects Analysis for Hybrid Vehicle Systems
… industry to develop advanced technology vehicles which meet increasing strict government regulations and standards for emissions and fuel economy while maintaining the safety, performance, and consumer appeal of the vehicle. In response to these requirements, hybrid and electric vehicle …
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Autonomous vehicle systems: implications for maritime operations, warfare capabilities, and Command and Control
… and utilization of unmanned tele-operated vehicles in the air, ground, and maritime domains. With advances in computing and processing technology, these vehicles and systems are becoming increasingly autonomous in nature and will continue to evolve in the future, significantly impacting the …
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Strategies for the introduction of advanced fuel/vehicle systems to the mass market
… and adoption of cleaner advanced fuel/vehicle systems continues to gain momentum globally. World population growth, rising national wealth, persistence of auto-centric land development patterns, and the growing popularity of truck-based platforms have reversed the trend toward lighter …
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Deeply-towed underwater vehicle systems : a verified analytical procedure for creating parameterized dynamic models
The dynamics of deeply-towed cable/vehicle systems are governed by nonlinear partial differential equations and as a result, trajectory control is generally difficult using the available techniques. This work examines the possibility of utilizing parametric dynamic models in differential equation …
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Design and development of a context-aware collaborative autonomous real-time vehicle systems framework
The increasing autonomy of intelligent systems, with applications extending from self-driving vehicles to home-based robots, has emerged as a critical area of focus in modern research. Yet, to acknowledge the full potential of these systems, numerous challenges must be addressed. This thesis …
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Deeply-towed underwater vehicle systems : a verified analytical procedure for creating parameterized dynamic models
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1989.
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