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 24 for “"sensor location"”.
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Influence of active magnetic bearing sensor location on the calculated critical speeds of turbomachinery
… by properly accounting for the influence of AMB sensor location on the undamped critical speeds. This investigation includes the development of an AMB modified Jeffcott model. The results from the AMB modified Jeffcott analysis give useful design guidance for the influence of the sensor location …
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The Effect of Sensor Mass, Sensor Location, and Delamination Location of Different Composite Structures Under Dynamic Loading
<p>This study investigated the effect of sensor mass, sensor location, and delamination location of different composite structures under dynamic loading. The study pertains to research of the use of accelerometers and dynamic response as a cost-effective and reliable method of structural health …
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Reliable facility location design and traffic sensor deployment under probabilistic disruptions
… context, various types of surveillance sensors (e.g., induction loops, video cameras and radio frequency transponders) are deployed in transportation networks to estimate real-time traffic states, which are valuable information for both private sectors (e.g., tracking fleets for trucking …
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Study of the effect of sensor position on the forced response characteristics of rotors with active magnetic bearings
… bearings. The position of the magnetic bearing sensors is taken into account and the effect of changing sensor position on the vibrational characteristics of rotor systems is studied. The modified algorithm is validated using a simpler modified Jeffcott model. The effect of changing from a …
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Computational intelligence for fault diagnosis in gearbox systems
… systems for gearbox faults by investigating sensor selection, sensor location, and sensory features to be able to diagnose a fault accurately. Therefore, the goal is to select reliable techniques at each stage in order to improve the reliability of the fault diagnosis system. Different sets …
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Measurement and evaluation of the performance of an integral abutment bridge deck
… the reinforcement steel and the concrete deck. Sensor data is collected every 20 minutes and saved. In addition to the data mentioned above, the sensor system also measures the temperature gradient through the deck, the length of the spans, the inclination of the abutments, and girders, and the …
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Wireless Sensor Integrated Tool for Characterization of Machining Dynamics in Milling
… is the development and use of low cost, reliable sensors. Historically, the ability to record in-process data at an end mill tool tip has been limited by the sensor location. Often, these sensors are mounted on the material workpiece or the machine spindle at significant physical distance from the …
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Smart Power Module for Distributed Sensor Power Network of an Unmanned Ground Vehicle
… vehicles, geographic diversity with regard to sensor location is inherent because sensor orientation and placement are crucial to performance. Sensor power, therefore, is also distributed by nature of the devices being supplied. This thesis presents the design and evaluation of a smart power …
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Active Minimization of Acoustic Energy Density to Attenuate Radiated Noise from a Diesel Generator
… from 0 to 300 Hz. Tonal frequencies at exterior locations were often reduced by 20 to 30 dB using feedforward control. With feedback control, tones were reduced 5 to 10 dB. Broadband control results were obtained at an exterior location using a feedforward control configuration. This control was …
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Optimal experimental designs for the estimation of thermal properties of composite materials
… time of the applied heat flux, the temperature sensor location, and the experimental time. In addition to these parameters, the optimal location of the heat flux was also determined for the two- dimensional experiments. Utilizing the optimal one-dimensional experiment, the effective thermal …
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Rss Based Localization In A Rayleigh Fading Environment
… quantify the improvement that can be obtained in sensor agent localization accuracy as a function of the number of multipath components that can be resolved. We assume that a known number sensor agents are located at unknown coordinates within a rectangular grid having anchors at the corner …
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Leading edge vortex detection using bio-inspired on-body pressure sensing
… to maintain the Kairmin gaiting motion requires sensory feedback and active control. Our research focuses on the detection of leading edge vortices (LEV) shed from a hydrofoil undergoing both steady translation and flapping foil motions. A NACA 0018 foil was instrumented with four pressure …
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A Computational Framework for Assessing and Optimizing the Performance of Observational Networks in 4D-Var Data Assimilation
… scientific questions related to optimal sensor network design, quantification of data impact, pruning redundant data, and identifying the most beneficial additional observations. These questions originate in operational data assimilation practice, and have started to attract considerable …
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Instrumented Response and Multilayer Modeling of Cold-Central Plant Recycled Pavement Section
… type of monitoring technique, which uses several sensors installed within the pavement to obtain the structural responses used in Mechanical-Empirical design to control the performance and define asset management plans. This thesis presents the instrumented response of a Recycled Pavement Section …
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The Distance to Uncontrollability via Linear Matrix Inequalities
The distance to uncontrollability of a controllable linear system is a measure of the degree of perturbation a system can undergo and remain controllable. The definition of the distance to uncontrollability leads to a non-convex optimization problem in two variables. In 2000 Gu proposed the first …
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Non-Linear Robust Observers For Systems With Non-Collocated Sensors And Actuators
… the adverse effects induced by non-collocated sensors and actuators.</p> <p>The present work investigates the adverse effects of non-collocated sensors and actuators on the phase characteristics of flexible structures and the ensuing implications on the performance of structural controllers. …
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The Effect of Magnification Loupes on Posture During Instrumentation by Dental Hygienists
… was taken. Accelerometers were placed on four locations of the head and trunk (occipital pole of head, cervical vertebrae: C5, thoracic vertebrae: T5, lumbar vertebrae: L1) to measure changes in posture. Accelerations in three axes were recorded (anterior/posterior (AP), medial/lateral (ML), …
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Developing acoustic emission technology for knee joint assessment
… within-subject implications to AE measures of sensor location, sensor attachment methods and the angular velocity of the knee joint during data collection. These results would allow better understanding of methodological implications for the further analysis of between subject repeatability of …
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Evaluation of the Pallet Deflection that Occurs Under Forklift Handling Conditions
… the speed, the payload of the unit load carried, sensor location, forklift type, and road conditions. The results obtained showed that the highest vibration intensity occurred at 3-4 Hz, while the highest overall Grms value observed was 0.145 G2/Hz (between 1-200 Hz). An increase in the forklift …
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Intelligent orchestration of computation and networking for drone swarm applications
… swarms that are equipped with high-resolution sensors and video cameras can benefit many applications (e.g., disaster response management, smart farming, traffic control). This requires sensor localization and access to edge computation and networking resources to provide environmental …
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