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 51 for “"Model Following"”.
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Contributions to model following control theory
A standard form for linear and nonlinear perfect model following control problems is introduced, and the associated control laws developed. The error dynamics of such systems are analyzed with respect to stability of the error. The effects on the error dynamics of measurement errors and parameter …
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A digital adaptive model following controller
A discrete algorithm for following a desired model for systems that are non-linear or time varying is developed. The controller is developed with optimal control theory by finding the optimal control that would minimize a quadratic cost functional based on the error between the model and system for …
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Model-following control applications to nonlinear mechanical systems
Model-following control design methodology is introduced for nonlinear plants and models. The plant equations are considered to be linear in the control input. Dynamic matching conditions are presented and the resulting error dynamics are given. The stability of error dynamics is ensured, using …
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A model-following digital control law for an EBF-STOL aircraft
… the control of an EBF-STOL aircraft using a real model-following technique. The method is based on the solution of the discrete matrix Riccati equation to generate the required feedback and feedforward gains. The feedback gains provide a means of closing the control loop around each of the plant …
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Control Law Design and Validation for a Helicopter In-Flight Simulator
… validated in this research. A classical explicit model following control system with a frequency dependent feedback controller was used. The frequency dependent controller allows model following of the attitude in the short term and the velocity in the long term. Controller gains were optimized …
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Variable Stability Transfer Function Simulation
… evaluating aircraft. Classically, a simulation model is specific to a single particular airframe, only able to model those flying characteristics. Vast information can be gained from a simulation that is able to model a wide range of aircraft, through a comparison of the performance of these …
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Airplane trajectory expansion for dynamics inversion
… can be derived from a trajectory then a model-following solution can allocate the controls necessary for the maneuver. This paper explores the problem of finding the complete state definition and provides a solution that requires numerical differentiation, fixed point iteration and a …
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Tracing of Alpha-to-Beta Cell Transition Following Treatment with CHIR-Injected Human Multipotent Stromal Cell Secreted Proteins
… have demonstrated beta-cell neogenesis following ablation; however, the cellular mechanisms driving islet regeneration remain unclear. Previous work from the Hess Lab has shown that human bone marrow-derived multipotent stromal cells (BMMSCs), bioengineered via WNT pathway activation …
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MIA-mi: Exploring the Affect of Digital Cinema Through Micro-Budget Production Techniques
… was produced in a micro-budget (under $50,000) model, following the program's guidelines. It was shot on location in Miami, FL, with a volunteer cast and crew. This thesis is a record of the film's development from inception to post-production, in preparation for distribution.
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The Role of Health Behaviors and Food Insecurity in Predicting Food Intake in Low-Income Children
… children (i.e., ages 5 - 10). A measurement model was specified to ensure good fit between the data and predictive model. Following this step, the structural model was conducted and several significant findings emerged. Food insecurity significantly predicted vegetable intake (latent …
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Residual stress in Pt coatings under thermal influence
… and intrinsic stress in the layer. Analytical model, following the method of Tsui and Clyne, was used to resolve the two stress contributions. With the thermal component being constant, the variation of the observed total stress was attributed to the relaxing intrinsic components. Further …
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Performance and Robustness of Adaptive Controllers for Linear Stochastic Systems
… least squares algorithm. As to the linear model following problem, we have shown that under certain conditions, both algorithms are strongly consistent. For the general tracking problem, if the reference trajectory is sufficiently rich of order greater than or equal to a certain positive …
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Study of particulate matter formation and evolution in near-field aircraft plumes using a one-dimensional microphysical model
… microphysics and chemical kinetics model that is used to study the formation and evolution of particulate matter in near field aircraft plumes at ground level. The initial exhaust properties were obtained from engine data and plume mixing profiles were generated using FLUENT®. The …
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Testing for Constancy of Correlation in Autoregressive Conditional Heteroscedasticity (Arch) Models
… of correlation in the multivariate normal model. Following Chesher (1984) and Cox (1983), we focus on deriving a score test of the hypothesis that the variance of the parameter of interest is zero. Here the score test checks the local behavior of the log-likelihood function close to the …
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Some issues in the sliding mode control of rigid robotic manipulators
… to the overall robotic control system. • A model reference adaptive control using the terminal sliding mode technique is proposed. A multivariable terminal sliding mode is defined for a model following control system for rigid robotic manipulators. A terminal sliding mode controller is then …
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Development of an inducible psoriasis-like in vivo model
… on these data, we sought to generate an in vivo model that overexpresses PPARd specifically in the epidermis. A model was available that we sought to characterise. This model, following induction with a specific PPARd ligand, results in a psoriasis-like skin phenotype, accompanied by immune …
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Capital outlay in fifty states: An analysis to determine an equitable model for Illinois
… a framework that classified capital funding models at the state level, the researcher was able to identify each state’s method of funding capital costs. The following questions were the focus of the study: 1. What are the current school capital funding/outlay models used in the United States? …
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Development and analysis of a simple grey-box model of central sleep apnea
… thesis, we develop and analyze a simple grey-box model that describes the pathophysiology of central sleep apnea (CSA). We construct our model following a thorough survey of published approaches. Special attention is given to PNEUMA, a complex, comprehensive model of human respiratory and …
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Controlling Behavior with Shared Knowledge
… of how human readers create detailed mental models, referred to as the “reader model”, which they use to understand and interpret stories with shared knowledge. Employing the reader model has resulted in the generation of significantly more coherent and goal-directed stories. I also explore …
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