05043nam 2200541 450 99651186360331620231006150908.03-031-01956-310.1007/978-3-031-01956-2(MiAaPQ)EBC7191429(Au-PeEL)EBL7191429(CKB)26089589300041(DE-He213)978-3-031-01956-2(PPN)26820831X(EXLCZ)992608958930004120230510d2022 uy 0engurcnu||||||||txtrdacontentcrdamediacrrdacarrierSampled-data control for periodic objects /Efim Rosenwasser, Torsten Jeinsch, Wolfgang Drewelow1st ed. 2022.Cham, Switzerland :Springer,[2022]©20221 online resource (258 pages)Print version: Rosenwasser, Efim N. Sampled-Data Control for Periodic Objects Cham : Springer International Publishing AG,c2023 9783031019555 Includes bibliographical references and index.Part I: The Frequency Approach to the Mathematical Description of Linear Periodic Objects -- Discrete Operational Transformations of Functions of Continuous Argument and Operator Description of LTI Systems -- State-Space Analysis of Finite-Dimensional Linear Continuous Periodic (FDLCP) Objects -- Frequency Method in the Theory of FDLCP Objects -- Floquet–Lyapunov Decomposition and its Application -- Part II: PTM approach to SD systems with FDLCP Objects -- Open-Loop SD System with FDLCP Object -- Open-Loop SD System with FDLCP Object and Delay -- Closed-Loop SD System with FDLCP Object and Delay -- Part III: Determinant Polynomial Equations, SD Modal Control and Stabilization of FDLCP Objects -- Polynomial Matrices -- Rational Matrices -- Determinant Polynomial Equations, Causal Modal Control and Stabilization of Discrete Systems -- 11 Synchronous SD Stabilization of FDLCP Objects -- Asynchronous SD Stabilization of FDLCP Objects -- Part IV Building the Quality Functional for the H2-Optimization Task of the System Sτ -- General PTM Properties of Synchronous Open-Loop SD System with Delay -- 14 PTM of the Closed-Loop SD System with Delay as Function of Argument s -- Calculation of Matrices v0(s), ξ0(s), ψ0(s) -- System Function -- Representing the PTM of a Closed-Loop Synchronous SD System by the System Function -- H2-Norm of the Closed-Loop SD System -- Construction of the Quality Functional -- Part V H2-Optimization of the Closed-Loop SD System -- Scalar and Matrix Quasi-polynomials -- Minimization of a Quadratic Functional on the Unit Circle -- Construction of Matrix η(s,t) -- Construction of Matrix C ̃T (s,t) -- Transformation of Quality Functional -- H2-Optimization of the System Sτ.This book is devoted to the problem of sampled-data control of finite-dimensional linear continuous periodic (FDLCP) objects. It fills a deficit in coverage of this important subject. The methods presented here are based on the parametric transfer matrix, which has proven successful in the study of sampled-data systems with linear time-invariant objects. The book shows that this concept can be successfully transferred to sampled-data systems with FDLCP objects. It is set out in five parts: an introduction to the frequency approach for the mathematical description of FDLCP objects including the determination of their structure and their representation as a serial connection of periodic modulators and a linear time-invariant object; construction of parametric transfer matrix for different types of open and closed sampled-data systems with FDLCP objects; the solution of problems of causal modal control of FDLCP objects based on the mathematical apparatus of determinant polynomial equations; consideration of the problem of constructing a quadratic quality functional for the H2-optimization problem of a single-loop synchronous sampled-data system with control delay; description of the general H2-optimization procedure. Necessary mathematical reference material is included at relevant points in the book. Sampled-Data Control for Periodic Objects is of use to: scientists and engineers involved in research and design of systems of systems with FDLCP objects; graduate students wishing to broaden their scope of competence; their instructors; and mathematicians working in the field of control theory.Automatic controlControl automàticthubTeoria de controlthubLlibres electrònicsthubAutomatic control.Control automàticTeoria de control629.8Rosenwasser Efim1228646Jeinsch TorstenDrewelow WolfgangMiAaPQMiAaPQMiAaPQBOOK996511863603316Sampled-data control for periodic objects3361726UNISA05996nam 22007575 450 991063772290332120230102162503.09783031218491303121849310.1007/978-3-031-21849-1(CKB)5580000000496162(DE-He213)978-3-031-21849-1(PPN)267810466(MiAaPQ)EBC31005879(Au-PeEL)EBL31005879(OCoLC)1356793598(EXLCZ)99558000000049616220230102d2023 u| 0engurnn|008mamaatxtrdacontentcrdamediacrrdacarrierCharacterisation of the Mechanical Properties of Heat-Induced Protein Deposits in Immersed Cleaning Systems /by Jintian Liu1st ed. 2023.Cham :Springer International Publishing :Imprint: Springer,2023.1 online resource (XX, 88 p. 30 illus., 16 illus. in color.) Mechanics and Adaptronics,2731-622X9783031218484 3031218485 1. Introduction -- 1.1. Motivation -- 1.2. Aim of the present work -- 1.3. Outline -- 2. Background of cleaning in place -- 2.1. Heat treatment in the dairy production -- 2.2. Fouling and cleaning in the dairy production -- 2.2.1. Heat-induced formation of fouling deposits -- 2.2.2. The use of whey protein for experimental studies -- 2.2.3. Cleaning process for the fouled heating surface -- 2.3. The influence factors of cleaning in place -- 2.4. Cleaning mechanisms on the mechanical properties of protein deposits -- 3. Mechanical behaviour of heat-induced deposits -- 3.1. Mechanical behaviour of fouling deposits -- 3.1.1. Fouling experiments with raw milk and whey protein solution -- 3.1.2. Realisation of quasi-static and dynamic indentation experiments -- 3.1.3. Comparison of mechanical responses between milk and whey protein deposits -- 3.1.4. Influences of heat treatment on the mechanical behaviour of fouling deposits -- 3.2. Mechanical behaviour of whey protein gel -- 3.2.1. Gelation of whey protein solution with different heating conditions -- 3.2.2. Characterisation of fracture behaviour of WPG -- 3.2.3. Degradation of the WPG samples with NaOH solution -- 3.2.4. Characterisation of failure behaviour of WPG -- 4. Constitutive modelling and numerical simulation 69 -- 4.1. Kinematics and balance equations -- 4.1.1. Kinematics of deformation -- 4.1.2. Stress tensors -- 4.1.3. Balance equation -- 4.2 Constitutive equations for protein deposits -- 4.2.1. One-dimensional generalised Maxwell model -- 4.2.2. Three-dimensional visco-hyperelastic model -- 4.2.3. Parameter identification through inverse finite element method -- 4.2.4. Application of modelling approaches -- 5. Conclusion and Outlook. .During heat treatment in dairy production, the rapid formation of heat-induced fouling deposits on the plant surface leads to reduced efficiency of heat transfer. Therefore, a regular cleaning process is required to soften the heat-induced protein deposits and then remove them from the plant surface. The mechanical property of the deposits is one of the key issues of the cleaning mechanisms since the non-fractured behaviour dominates the deformation of the fouling layer and the failure behaviour has a great impact on the cohesive removal of fouling deposits. Considering the complicated geometry of fouling deposits and their irregular distribution, indentation experiments were carried out on various kinds of protein deposits. The experimental results reveal the significant influence of the thickness of fouling deposits on their mechanical behaviour and the time-dependent nonlinear behaviour of the deposits. Furthermore, heat-induced whey protein gel was used as the model material for fouling deposits and the non-fractured and fracture behaviour was characterized using compression and wire cutting experiments, respectively. The material parameters identified using the inverse finite element method allow the prediction of fracture behaviour under localized external loads and provide a deeper insight into cohesive removal. To investigate the softening effect during caustic washing, tensile experiments were conducted on chemically treated and untreated whey protein gels. Adequate chemical degradation leads to a softer mechanical response and increased stress relaxation, making whey protein gels more flowable and more resistant to tensile deformation. The experimental results provide useful data on the failure behaviour of chemically treated whey protein gels.Mechanics and Adaptronics,2731-622XMechanics, AppliedBiomedical engineeringBiomechanicsSoft condensed matterThermodynamicsHeat engineeringHeatTransmissionMass transferEngineering MechanicsBiomechanical Analysis and ModelingSoft MaterialsEngineering Thermodynamics, Heat and Mass TransferMechanics, Applied.Biomedical engineering.Biomechanics.Soft condensed matter.Thermodynamics.Heat engineering.HeatTransmission.Mass transfer.Engineering Mechanics.Biomechanical Analysis and Modeling.Soft Materials.Engineering Thermodynamics, Heat and Mass Transfer.620.1Liu Jintianauthttp://id.loc.gov/vocabulary/relators/aut1353907MiAaPQMiAaPQMiAaPQBOOK9910637722903321Characterisation of the Mechanical Properties of Heat-Induced Protein Deposits in Immersed Cleaning Systems3284866UNINA