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 29 for “"Tracking Errors"”.
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Comparison of Direct and Heterodyne Detection Optical Intersatellite Communication Links
… links is very sensitive to the pointing and tracking errors at the transmitter and receiver. In the presence of random pointing and tracking errors, optimal antenna gains exist that will minimize the required transmitter power. In addition to limiting the antenna gains, random pointing and …
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Imprecise computation in real-time control systems
… and the precise trajectory is called the tracking error. We analyze the consequence of imprecise computation, caused by corrupted input and/or prematurely terminated output computation, on tracking errors for single-input-single-output and multiple-input-multiple-output time-invariant …
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A Comparison of Multiple-Model Target Tracking Algorithms
There are many multiple-model (MM) target-tracking algorithms that are available but there has yet to be a comparison that includes all of them. This work compares seven of the currently most popular MM algorithms in terms of performance, credibility, and computational complexity. The algorithms to …
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Stochastic Approximation Algorithms With Applications To Particle Swarm Optimization, Adaptive Optimization, And Consensus
… A centered and scaled sequence of the estimation errors is shown to have a diffusion</p> <p>limit. In Chapter 3, we study a class of stochastic approximation algorithms with regime switching that is modulated by a discrete Markov chain having countable state spaces and two-time-scale structures. …
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The Role of Mirror Errors in Solar Energy Conversion
… mirrors are not perfect and have slope, shape, tracking, and non-specularity errors. This thesis investigates the role that these errors play in decreasing the overall efficiency with which radiation is converted to work in a system that relies on reflection. Three theoretical approaches are …
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The Role of Mirror Errors in Solar Energy Conversion
… mirrors are not perfect and have slope, shape, tracking, and non-specularity errors. This thesis investigates the role that these errors play in decreasing the overall efficiency with which radiation is converted to work in a system that relies on reflection. Three theoretical approaches are …
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Adaptive Inverse Dynamics Control Scheme of Two-Compartment Lung System
… to the lungs. The adaptation law uses the tracking error to compute the parameter estimates for the control law. The preliminary results indicate that the tracking errors can be improved if the parameter values associated with the adaptation law are properly chosen, and the performance is …
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Cooperative impedance control with time-varying stiffness
… impedances. In the event of large trajectory tracking errors, this implementation method generates large interaction forces that can damage the workcell. Additionally, these position-based devices require dedicated force/torque sensors to measure and apply forces. In this paper, we present an …
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ESSAYS ON PORTFOLIO OPTIMIZATION AND MANAGEMENT USING BOOTSTRAPPING METHOD: THE CASE OF BANK INDONESIA
… of various parameters on the volatility of tracking errors are simulated. To deal with non-normality of tracking-error data, bootstrap bias corrected and accelerated (BCa) confidence interval will be utilized to test the volatility profile of each model.
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Robust Repetitive Control and Its Application
… is developed to further reduce cam profile tracking errors. The design, modeling, analysis and preliminary control design of the dual stage actuator are presented. The experimental results are also presented to demonstrate the effectiveness of dual stage actuator. Finally, TPRRC is also …
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Governor control optimization of hydro power plants using hybrid fuzzy logic and PID control.
… system stability and elimination of load tracking errors. This thesis studies on ways to use fuzzy logic control (FLC) together with the conventional proportional-integral-derivative (PID) controllers to aid in this process. However, coming up with the inputs, rule base and the outputs, …
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Biomechanical Validation of Skeletal Tracking Data and Developing Action Recognition Models for Basketball: A Baseline for NBA Officiating Tools
Optical tracking technology in sports has advanced rapidly in recent years, enabling new opportunities for data-driven analysis and tools to enhance the game. This study presents a framework for processing and analyzing a new skeletal tracking dataset collected from NBA basketball games. The …
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Effects of Hip Osteoarthritis on Lower Extremity Joint Contact Forces
… Reduction Algorithm (RRA) to reduce modeling errors. Kinematic solutions from RRA were used in the Computed Muscle Control (CMC) tool to compute muscle forces, then JCF were estimated using the Joint Reaction Analysis tool. Validation included JCF comparisons to published data of similar …
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The application of multiuser detection to cellular CDMA
… computational complexity and robustness to code tracking errors. From this work, one receiver structure is identified for further study, namely multistage interference cancellation. The theoretical performance of this receiver is analyzed using a standard Gaussian Approximation and an Improved …
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Generic dynamic modelling and model-based trajectory tracking control of wheeled mobile robots (WMRs)
… of model-based control schemes for trajectory tracking of Wheeled Mobile Robots (WMRs) for industrial applications. The research extends the theoretical and experimental work at the Centre for Industrial Control, Department of Mechanical Engineering, Concordia University on mobile robotics …
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Vehicle merging control for an automated highway system
… loop by specified control guidance law. The tracking errors compared with desired states are eliminated by the proper design of controllers in the inner loop. Both longitudinal and lateral controller are designed using the sliding mode control theory which can handle the model nonlinearities …
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Design of an Attitude Control System for a Spacecraft with Propellant Slosh Dynamics
… performance degradation resulting in attitude tracking errors and instability. As spacecraft missions become more complex and involve longer durations, a substantial propellant mass is required to achieve the mission objectives and perform orbital maneuvers. When the propellant tanks are only …
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Discrete-time Stable Geometric Controller and Observer Designs for Unmanned Vehicles
… the first part of this dissertation, we consider tracking control of underactuated systems on the tangent bundle of the six-dimensional Lie group of rigid body motions, SE(3). We formulate both asymptotically and finite-time stable tracking control schemes for underactuated rigid bodies that have …
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A Psychophysiological Assessment of the Efficacy of Event-Related Potentials and Electroencephalogram for Adaptive Task Allocation
… Under the experimental condition, a compensatory tracking task was switched between manual and automatic task modes based upon the participant's EEG. ERPs were also gathered to an auditory, oddball task. Participants in the yoked condition performed the same tasks under the exact sequence of task …
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How Well Do Commodity Based ETFs Track Underlying Assets?
… the period of January 2012 to October 2017. Tracking error in this study is evaluated through 4 approaches to measure error, bias, systematic risk, and error magnitude. Additionally, a mispricing analysis is conducted as an alternative form of error measurement Results indicate that tracking …
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