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 174 for “"Shipboard"”.
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Shipboard aggregate power monitoring
Modem naval warships rely on vast arrays of sensor networks to evaluate the performance of mission critical systems. Although these sensor networks enable increased levels of automation, they are costly to install and to maintain. The power distribution network offers an alternative solution for …
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The Shipboard Automatic Watchstander (SAW) : utilization of Nonintrusive Load Monitoring for shipboard automation
This thesis presents results from operational testing of Nonintrusive Load Monitoring (NILM) systems aboard active US Coast Guard units. Monitoring the ships' electrical system from centralized power distribution points, data collected by the NILMs provide information for: 1) human activity …
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VTOL controls for shipboard landing
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1979.
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Hardware model of a shipboard generator
A hardware model of the Gas Turbine Generator (GTG) in use on the US Navy's DDG-51 Class Destroyer is constructed for use as a lab apparatus at the Massachusetts Institute of Technology's Laboratory for Electromagnetic and Electronic Systems (LEES). The components of the hardware model include a 5 …
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Dynamic simulation of shipboard electric power systems
Thesis (Nav. E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1993.
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Shipboard applications of non-intrusive load monitoring
The Non-Intrusive Load Monitor (NILM) provides a method of measuring component performance and source power quality through a single point of entry in the power distribution system. A study was performed utilizing the NILM onboard three different ships (along with experimentation in the laboratory) …
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Shipboard integrated engineering plant survivable network optimization
… a method for the integral design of minimum cost shipboard stored energy in consideration of casualty and operating conditions is shown. The overall methodology developed in this work can provide program managers assurance that design concepts all represent minimum cost and best value, thus …
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Composite materials in dynamic shipboard structural mounts
The purpose of this thesis is to investigate the viability of replacing traditional metal structural and machinery mounts with padding made of composite material. The two types of padding or isolation materials are represented by steel and CFRP (carbon fiber reinforced polymer). Machinery and …
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Design and analysis of shipboard electrical distribution
… design and feasibility analysis of a new type of shipboard electrical distribution system for Naval vessels. The design combines three traditionally separate disciplines: damage control, marine engineering, and electric power engineering to produce a hybrid system well suited for present and …
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Inhibition of microbial colonization of shipboard fuel systems
… was to study the problem of colonization of shipboard fuel systems and to examine the effect of a number of environmental factors on microbial growth and survival in order to find potential preservative treatments. A variety of microbial species were isolated from samples taken from fuel …
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Shipboard Fault Detection Methods for Condition-based Maintenance
… This work demonstrates vibration analysis for shipboard fault detection. Custom instrumentation and measurement techniques are applied to compressors, pumps, fans, and other shipboard electric machines.
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Feasibility Assessment for Amine-Based Shipboard Carbon Capture
… feasible for a large sector of the industry. Shipboard carbon capture systems (SCC) offer a possible solution to maritime CO₂ emissions. Here, MEA-based carbon capture systems are designed and evaluated for a representative ultra large container vessel (RULCV) at various lean and rich amine …
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Preventing Stern Tube Corrosion through Shipboard Cathodic Protection
… data to generate an automatic log of the shipboard load operation. The record of energy consumption provided by a NILM gives designers in the seagoing services a continuously evolving picture of present and future power requirements, can shift some or all responsibility away from …
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Improving shipboard applications of non-intrusive load monitoring
… friendly Graphical User Interface (GUI) to allow shipboard crews to utilize the NILM while in operation. Previous applications of NILM required post-event data analysis in the laboratory. An additional monitor was installed on the Low Pressure Air Compressor (LPAC) #1 at the LBES facility to …
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Hidden Failures in Shipboard Electrical Integrated Propulsion Plants
The differences between shipboard and land based power systems are explored to support the main focus of this work. A model was developed for simulating hidden failures on shipboard integrated propulsion plants, IPP. The model was then used to evaluate the segregation of the IPP high voltage, HV, …
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Shipboard fluid system diagnostics using non-intrusive load monitoring
… diagnostic capabilities. The pressure to reduce shipboard manning only adds to the difficulties associated with monitoring such systems. One diagnostic platform that is particularly well suited for use in such an environment is the non-intrusive load monitor (NILM). The primary benefit of the …
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Shipboard fluid system diagnostics using non-intrusive load monitoring
… diagnostic capabilities. The pressure to reduce shipboard manning only adds to the difficulties associated with monitoring such systems. One diagnostic platform that is particularly well suited for use in such an environment is the non-intrusive load monitor (NILM). The primary benefit of the …
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Shipboard condition based maintenance and integrated power system initiatives
… exploring the application of NILM technology in shipboard environments. The NILM's unique ability to the monitor the power usage profile of these systems can be used to immediately diagnose system casualties and unusual operation parameters. Additionally, research has shown that the NILM can be …
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Framework of non-intrusive load monitoring for shipboard environments
A Non-Intrusive Load Monitor (NILM) measures power at a central point in an electrical network in order to provide real-time energy management and equipment diagnostics. Results are presented from NILM systems installed aboard two US Coast Guard ships. The collected data is used for fault …
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Radiated Noise Assessment of Shipboard Systems Using Vibration Analysis
… predict its frequency-gain model for different shipboard systems. This method did not yield good accuracy; however, using different data analysis tools such as Recurrent Neural Networks helped improve prediction accuracy. Eventually, this work suggests future directions to follow, based on the …
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