Materials Phase Change Pde Control Estimation

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Materials Phase Change Pde Control Estimation

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Author : Shumon Koga
language : en
Publisher: Springer Nature
Release Date : 2020-11-01

Materials Phase Change Pde Control Estimation written by Shumon Koga and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-11-01 with Science categories.

This monograph introduces breakthrough control algorithms for partial differential equation models with moving boundaries, the study of which is known as the Stefan problem. The algorithms can be used to improve the performance of various processes with phase changes, such as additive manufacturing. Using the authors' innovative design solutions, readers will also be equipped to apply estimation algorithms for real-world phase change dynamics, from polar ice to lithium-ion batteries. A historical treatment of the Stefan problem opens the book, situating readers in the larger context of the area. Following this, the chapters are organized into two parts. The first presents the design method and analysis of the boundary control and estimation algorithms. Part two then explores a number of applications, such as 3D printing via screw extrusion and laser sintering, and also discusses the experimental verifications conducted. A number of open problems and provided as well, offering readers multiple paths to explore in future research. Materials Phase Change PDE Control & Estimation is ideal for researchers and graduate students working on control and dynamical systems, and particularly those studying partial differential equations and moving boundaries. It will also appeal to industrial engineers and graduate students in engineering who are interested in this area.

Pde Control Of String Actuated Motion

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Author : Ji Wang
language : en
Publisher: Princeton University Press
Release Date : 2022-10-25

Pde Control Of String Actuated Motion written by Ji Wang and has been published by Princeton University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-10-25 with Science categories.

New adaptive and event-triggered control designs with concrete applications in undersea construction, offshore drilling, and cable elevators Control applications in undersea construction, cable elevators, and offshore drilling present major methodological challenges because they involve PDE systems (cables and drillstrings) of time-varying length, coupled with ODE systems (the attached loads or tools) that usually have unknown parameters and unmeasured states. In PDE Control of String-Actuated Motion, Ji Wang and Miroslav Krstic develop control algorithms for these complex PDE-ODE systems evolving on time-varying domains. Motivated by physical systems, the book’s algorithms are designed to operate, with rigorous mathematical guarantees, in the presence of real-world challenges, such as unknown parameters, unmeasured distributed states, environmental disturbances, delays, and event-triggered implementations. The book leverages the power of the PDE backstepping approach and expands its scope in many directions. Filled with theoretical innovations and comprehensive in its coverage, PDE Control of String-Actuated Motion provides new design tools and mathematical techniques with far-reaching potential in adaptive control, delay systems, and event-triggered control.

Extremum Seeking Through Delays And Pdes

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Author : Tiago Roux Oliveira
language : en
Publisher: SIAM
Release Date : 2022-12-05

Extremum Seeking Through Delays And Pdes written by Tiago Roux Oliveira and has been published by SIAM this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-05 with Mathematics categories.

Extremum Seeking through Delays and PDEs, the first book on the topic, expands the scope of applicability of the extremum seeking method, from static and finite-dimensional systems to infinite-dimensional systems. Readers will find numerous algorithms for model-free real-time optimization are developed and their convergence guaranteed, extensions from single-player optimization to noncooperative games, under delays and PDEs, are provided, the delays and PDEs are compensated in the control designs using the PDE backstepping approach, and stability is ensured using infinite-dimensional versions of averaging theory, and accessible and powerful tools for analysis. This book is intended for control engineers in all disciplines (electrical, mechanical, aerospace, chemical), mathematicians, physicists, biologists, and economists. It is appropriate for graduate students, researchers, and industrial users.

Traffic Congestion Control By Pde Backstepping

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Author : Huan Yu
language : en
Publisher: Springer Nature
Release Date : 2022-12-16

Traffic Congestion Control By Pde Backstepping written by Huan Yu and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-16 with Science categories.

This monograph explores the design of controllers that suppress oscillations and instabilities in congested traffic flow using PDE backstepping methods. The first part of the text is concerned with basic backstepping control of freeway traffic using the Aw-Rascle-Zhang (ARZ) second-order PDE model. It begins by illustrating a basic control problem – suppressing traffic with stop-and-go oscillations downstream of ramp metering – before turning to the more challenging case for traffic upstream of ramp metering. The authors demonstrate how to design state observers for the purpose of stabilization using output-feedback control. Experimental traffic data are then used to calibrate the ARZ model and validate the boundary observer design. Because large uncertainties may arise in traffic models, adaptive control and reinforcement learning methods are also explored in detail. Part II then extends the conventional ARZ model utilized until this point in order to address more complex traffic conditions: multi-lane traffic, multi-class traffic, networks of freeway segments, and driver use of routing apps. The final chapters demonstrate the use of the Lighthill-Whitham-Richards (LWR) first-order PDE model to regulate congestion in traffic flows and to optimize flow through a bottleneck. In order to make the text self-contained, an introduction to the PDE backstepping method for systems of coupled first-order hyperbolic PDEs is included. Traffic Congestion Control by PDE Backstepping is ideal for control theorists working on control of systems modeled by PDEs and for traffic engineers and applied scientists working on unsteady traffic flows. It will also be a valuable resource for researchers interested in boundary control of coupled systems of first-order hyperbolic PDEs.

Boundary Control Of Pdes

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Author : Miroslav Krstic
language : en
Publisher: SIAM
Release Date : 2008-01-01

Boundary Control Of Pdes written by Miroslav Krstic and has been published by SIAM this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-01-01 with Mathematics categories.

The text's broad coverage includes parabolic PDEs; hyperbolic PDEs of first and second order; fluid, thermal, and structural systems; delay systems; PDEs with third and fourth derivatives in space (including variants of linearized Ginzburg-Landau, Schrodinger, Kuramoto-Sivashinsky, KdV, beam, and Navier-Stokes equations); real-valued as well as complex-valued PDEs; stabilization as well as motion planning and trajectory tracking for PDEs; and elements of adaptive control for PDEs and control of nonlinear PDEs.

Scientific And Technical Aerospace Reports

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Author :
language : en
Publisher:
Release Date : 1995

Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.

Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Publications Of The National Institute Of Standards And Technology Catalog

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Author : National Institute of Standards and Technology (U.S.)
language : en
Publisher:
Release Date : 1985

Publications Of The National Institute Of Standards And Technology Catalog written by National Institute of Standards and Technology (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.

Control And State Estimation For Materials Phase Change

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Author : Shumon Koga
language : en
Publisher:
Release Date : 2020

Control And State Estimation For Materials Phase Change written by Shumon Koga and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.

The dissertation presents results on control and state estimation for a physics-based "Stefan" model of phase change. Design procedures, theoretical analysis, applications to industrial processes, and experimental validation are addressed. The Stefan model describes a time-evolution of a material's temperature profile during melting/solidification phenomena along with the dynamics of the liquid-solid interface position. The mathematical description comprises a parabolic Partial Differential Equation (PDE), defined on a time-varying spatial domain, whose boundary position dynamics are governed by an Ordinary Differential Equation (ODE) driven by the PDE's state. None of the existing systematic and theoretical control are applicable to this problem due to the system's geometric nonlinearity as well as the infinite dimensionality. We design a boundary heat control to promote the melting so that the liquid-solid interface position is driven to a desired setpoint position. Our design is an extension of the "PDE backstepping method" to the Stefan system. The closed-loop stability is proven by Lyapunov analysis. The constraints of the temperature state and the heat input are guaranteed by virtue of the maximum principle. Analogous results for the state estimation are also developed to estimate the entire temperature profile from available measurements of the surface temperature and the liquid-solid interface position. The latter half of the dissertation is devoted to the application of the designed method to several practical problems. First, we introduce a Stefan model of "sea ice", which has been studied intensively due to the recent rapid melting of sea ice. We verify the desired robust performance of the designed estimator in a numerical simulation, which incorporates further complexity in the model and uncertainties. Second, we focus on "lithium-ion batteries", which have become ubiquitous in electronic devices, such as laptops and smartphones, and in electric vehicles. The model is described by a Stefan system of the lithium-ion concentration due to a solid-solid phase change in the electrodes during the charging and discharging cycles. Our estimator achieves accurate State-of-Charge estimation in simulation. Third, we apply the designed control method to "polymer 3D-printing" via screw extrusion for the sake of stabilizing the filament production under a fast printing, by extending the design to deal with the convection and heat loss. Fourth, we focus on "metal 3D-printing" which has a high impact on products and supply chains in industries. The proposed control method is applied for generating the desired shape of the melt pool, which shows the robust performance with respect to a radiation effect and sensor noise in numerical study. Finally, we conduct experiments of melting paraffin wax as an energy storage material, which shows the successful performance of our PDE-based control algorithm.

European Symposium On Computer Aided Process Engineering 15

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Author : L. Puigjaner
language : en
Publisher: Elsevier
Release Date : 2005

European Symposium On Computer Aided Process Engineering 15 written by L. Puigjaner and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Science categories.

Nbs Special Publication

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Author :
language : en
Publisher:
Release Date : 1968

Nbs Special Publication written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Weights and measures categories.