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 61 for “"sensor placement"”.
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Optimal sensor placement
… thesis we explore the problem of finding optimal sensor/actuator locations to achieve the minimum square error/least effort. The solution for the optimal sensor/actuator is often combinational, this means in order to solve for the solution we have to look at many parameters in the system and those …
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Optimal sensor placement for linear systems
The aim of sensor placement is to observe the state of a dynamical system while using only a small part of the available output information. Thus, the observer does not need sensors at every possible node of the system. We use sensor placement because it is not practical for large-scale networks, …
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Sensor placement for microseismic event location
… generated from the sum of the time--aligned sensor signals. The accuracy of localization for the algorithm characterized by the variance depends in part upon the configuration of sensors. Two algorithms, MAXSRC and MINMAX, are presented that use the variance of localization error, in a …
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Optimal sensor placement for sewer capacity risk management
… of failure through a novel approach to placement of sensors in wastewater collection systems. The hypothesis is that iterative movement of water level sensors, directed by a specialized metaheuristic search technique, can improve the efficiency of discovering locations of unacceptable …
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Near-Optimal Sensor Placement for Detection of Poisson Distributed Targets
In this dissertation, we address the problem of sensor placement for detecting uncertain targets. We model target arrivals using a Poisson process to capture the inherent randomness of event occurrences and emphasize the importance of accounting for uncertainty in the sensor placement strategy. To …
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Error Sensor Placement for Active Control of an Axial Cooling Fan
… for cooling fans have used near-field error sensors whose locations are determined according to a theoretical condition of minimized sound power. A theoretical point source model, based on the condition previously stated, reveals the location of near-field pressure nulls that may be used to …
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Damage Detection and Sensor Placement Strategies for Structures Under Frequency-Domain Dynamics
… the gathering of sufficient information through sensors such that modern damage estimation mechanisms can identify and diagnose anomalies with certainty. </p><p>To that end, we formulate a simultaneous inversion and optimal experimental design (OED) framework for models described by a set of …
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Algorithmic Optimization of Sensor Placement on Civil Structures for Fault Detection and Isolation
… a structural damage, or is due to system noise, sensor failure, or another non-structural event. Having confirmed the presence of a structural anomaly, the second part of the problem, damage isolation, is to determine where that anomaly has occurred.,/p><p>The principles of DDI have been used for …
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Decentralized sensor placement and mobile localization on an underwater sensor network with depth adjustment capabilities
… In this thesis we propose a novel underwater sensor network designed to mitigate the problems of underwater sensing and communication. A key feature of this system is the ability of individual nodes to control their depth in water. This single degree of freedom allows the network to …
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Optimal sensor placement in structural health monitoring (SHM) with a field application on a RC bridge
… Successful SHM requires deploying optimal sensor networks. We present a probabilistic approach to identify optimal location of sensors based on a priori knowledge on damage locations while considering the need for redundancy in sensor networks. The optimal number of sensors is identified …
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Integrated design optimization methods for optimal sensor placement and cooling system architecture design for electro-thermal systems
DSpace SAF Submission Ingestion Package generated from Vireo submission #13273 on 2019-02-07 at 14:23:18
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An investigation of the critical timescales needed for digging in wet and dry soil using a biomimetic burrowing robot
… engineering applications such as anchoring and sensor placement. The first chapter of this thesis presents the theoretical basis for the timescales necessary to achieve such efficient digging and gives design parameters for a device to validate the timescales. It then uses RoboClam, a robot …
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Dynamic temperature estimation of power electronics systems
… to use the reduced order thermal model in the sensor placement optimization process. The accuracy of the thermal estimates can be easily increased by increasing the number of sensors in the system. However, a large number of sensors increases the cost and complexity of the system. It might also …
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Advances in elliptical-core two-mode optical fiber sensors
… of the elliptical-core two-mode optical fiber sensors for use in real-life applications are presented. The improvements include the development of insensitive lead fibers and an optical device which allows fringe counting at the output of the sensor. The insensitive leads eliminate extraneous …
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Hardware Design of a Wearable System for Gesture-Based Teleoperation of a Robotic Manipulator
… namely gesture-based control. A review of sensors currently in use for human joint angle measurement is presented. Based on this review, a method was chosen that uses a variable-length fiber optic sensor. Several different types of optical fibers, along with a variety of test …
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Mutual information based tracking with mobile sensors
In order to utilize mobile sensor nodes in a sensing and estimation problem, one must carefully consider the optimal placement of those sensor nodes and simultaneously account for the cost incurred in moving the sensor nodes. We present an approximate dynamic programming approach to a tracking …
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Electric ship digital twin : framework for cyber-physical system security
… There is a trend towards increasingly networked sensors and actuators to enable condition monitoring, ensure efficient operation, and allow for autonomy. However, a cyberattack on a networked control system presents not just the possibility of information theft but of physical system damage and …
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Thermo-optic Phase Spectroscopy techniques for multiscale thermal conductance characterization in semiconductor integrated circuits
… films. Three variants are developed: Displacement TOPS (D-TOPS) for bulk solids, Immersion TOPS (I-TOPS) for deeply embedded films and interfaces, and High-Resolution TOPS (HR-TOPS) for nanoscale semiconductor films. Each technique combines AC laser heating, temperature sensing via probe …
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Probabilistic approaches to the design of wireless ad hoc and sensor networks
… and better coverage, wireless ad hoc and sensor networks have been under intensive research. It is believed that wireless ad hoc and sensor networks can become as important as the Internet. Just as the Internet allows access to digital information anywhere, ad hoc and sensor networks will …
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ADVANCED MODELING AND EFFICIENT OPTIMIZATION METHODS FOR REAL-TIME RESPONSE IN WATER NETWORKS
… thesis, two methods are proposed for the optimal placement of booster stations. Since the contaminant species is unknown a priori, these two methods differ in how they model the unknown reaction between the contaminant and the disinfectant. Both methods employ Mixed-Integer Linear Programming to …
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