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 73 for “"State estimator"”.
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A static state estimator for a power system network.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1968. M.S.
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An object-oriented distribution system distributed quasi-dynamic state estimator
… distribution system distributed quasi-dynamic state estimator (DS-DQDSE) that constantly monitors the states of the distribution system and provides the validated data to the control center. In particular, the dissertation presents a distributed and seamless infrastructure starting from …
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Design and implementation of the state estimator for trajectory following of an electromagnetic formation flight testbed
… for a trajectory following mission with a new state estimator designed for the mission. Firstly, the vehicle of the testbed is categorized into three subsystems of °ight computer, actuator, and measurement system, each of which is described in detail. Then, the new state estimator is designed …
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Development of an Intelligent Tire Based Tire - Vehicle State Estimator for Application to Global Chassis Control
… innerliner • Design of an integrated vehicle state estimator for application to global chassis control • Development of a model-based tire-road friction estimation algorithm • Development of an intelligent tire based adaptive wheel slip controller for anti-lock brake system (ABS) • Development …
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Design and implementation of a relative state estimator for docking and formation control of modular autonomous spacecraft
… this thesis. The central focus is on a relative state estimator based on an extended Kalman filter. The estimator is first presented theoretically, then the results of implementation and hardware testing are discussed. This thesis presents two main hardware applications for the estimator, both of …
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Two-Stage Fault Location Detection Using PMU Voltage Measurements in Transmission Networks
… which can be implemented with a PMU only linear state estimator. The thesis reviews several proposed fault location methods, such as, one-terminal [2], multi-terminal [3]-[11] and travelling wavelets methods [12]-[13]. A Two-stage fault location algorithm using PMU voltage measurements proposed …
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RESILIENT STATE ESTIMATION FOR MICRO AIR VEHICLES UNDER SENSOR ATTACKS
… proposes a solution to the problem of resilient state estimation and sensor fusion in an autonomous micro air vehicle. The setup comprises of redundant sensors that measure the same physical signal. An adversary may spoof a subset of these sensors and send falsified readings to the controller, …
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Three-Phase Linear State Estimation with Phasor Measurements
… Unit (PMU) to directly measure the system state and the increasing implementation of PMUs across the electric power industry, a natural expansion of state estimation techniques would be one that employed the exclusive use of PMU data. Dominion Virginia Power and the Department of Energy …
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A multiscale approach to state estimation with applications in process operability analysis and model predictive control
… application of multiscale ideas to the areas of state estimation and control. The work represents a significant departure from the traditional representations in the time and frequency domains, and provides a novel framework that leads to fast, efficient, and modular estimation algorithms. …
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System identification and state reconstruction for autonomous navigation of an underwater vehicle in an acoustic net
… part of the observer used to generate complete state estimates from the position measurements. An experimental apparatus and numerical analysis technique for vehicle system identification during the thruster induced hover limit cycle are described. Detailed comparisons to other techniques are …
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Real-time validation of power system transient stability simulation results
… on transmission facilities. Currently, there are state estimator models used in simulating the transient stability response of large systems in the U.S. to disturbances. This research project studies the transient stability models used in simulating a disturbance on the system, with a focus on …
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A controller design procedure for nonlinear stochastic systems
… a nonlinear control law coupled with an adaptive state estimator. The nonlinear control law is developed first. Using Taylor series expansion, linear approximations to the nonlinear systems are generated at selected points in the operating region. Then a control law which will produce the desired …
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Verification and Enforcement of State-Based Notions of Opacity in Discrete Event Systems
… and analyze the complexity of verifying various state-based notions of opacity in systems that are modeled as (possibly non-deterministic) finite automata with partial observation on their transitions. Assuming that the intruder observes system activity through some projection map and has …
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Learning Emergent Gaits with Decentralized Phase Oscillators: on the role of Observations, Rewards, and Feedback
… itself is interpreted as a latent contact state-estimator. Through a systematic ablation study, we show that the combination of phase observations, simple phase-based rewards, and the local feedback dynamics induces policies that exhibit emergent gait preferences, while using a reduced set …
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Tracking maneuvering targets via semi-Markov maneuver modeling
Adaptive algorithms for state estimation are currently of tremendous interest. Such estimation techniques have particular military usefulness in automatic gunfire control systems. The conventional Kalman filter, developed by Kalman and Bucy, optimally solves the state estimation problem concerning …
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High-Resolution Time-Synchronized Monitoring and Anomaly Detection in Modern Distribution System
… component. In Chapter 3, an adaptive linear state estimator for unbalanced distribution systems is developed. A novel optimal PMU placement (OPP) scheme is proposed to guarantee complete observability of the system. The linear state estimator further improves its robustness under …
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A deep learning approach to state estimation from videos
… lters have been commonly used for estimating the state of a vehicle from a video. Multi-State Constraint Kalman Filter (MSCKF) is an EKF-based state estimator that uses feature measurements for pose estimation of a vehicle. These models require a lot of hands-on engineering time to dene the …
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A Disturbance-Rejection Problem for a 2-D Airfoil Exhibiting Flutter
… However, due to unmeasurable aerodynamic-lag states, developing an active control using full-state feedback is not viable. The use of a state-estimator is a more practical way of developing active controllers. In this paper we investigate two control methods using state-estimators. We also use …
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State estimation of unbalanced power systems
… been developed which allows the calculation of state estimates for unbalanced electric power systems. This model incorporates the effects of mutually coupled conductors, earth return paths, unbalanced device configurations, and multiple voltage references. Development of the new model appeals to …
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The optimal placement of phasor measurement units and their effects on state estimation
… 2. conventional, hybrid and linear state estimation techniques to incorporate and utilize PMU measurement data to perform state estimation and to study the effects that differing PMU placement positions have on the accuracy of the resultant state estimator solution.
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