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Search results for: LQI
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LDI issue brief
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Diagnostic Models and Estimators for LDI in Transmission Pipelines
PublicationThis article considers and compares four analytical models of the pipeline flow process for leak detection and location tasks. The synthesis of these models is briefly outlined. Next, the methodology for generating data and diagnosing pipes is described, as well as experimental settings, assumptions and implemented scenarios. Finally, the quality of model-based diagnostic estimators has been evaluated for their bias, standard deviations...
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Li nucleation on the graphite anode under potential control in Li-ion batteries
PublicationApplication of Li-ion batteries in electric vehicles requires improved safety, increased lifetime and high charging rates. One of the most commonly used intercalation anode material for Li-ion batteries, graphite, is vulnerable to Li nucleation, a side reaction which competes with the intercalation process and leads to loss of reversible capacity of the battery, ageing and short-circuits. In this study, we deploy a combined grand...
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application of linear quadratic regulator (lqr) for nonlinear systems based on the parameter sensitivity
PublicationMetoda LQR jest znaną metodą optymalizacyjną dla liniowych układów sterowania. W referacie przedstawiono oryginalny algorytm dotyczący zastosowania tej metody dla nieliniowych układów sterowania przy wykorzystaniu analizy wrażliwości układu. Algorytm ten poddany jest weryfikacji na przykładzie układu sterowania napędu statku.
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Stability analysis of interconnected discrete-time fractional-order LTI state-space systems
PublicationIn this paper, a stability analysis of interconnected discrete-time fractional-order (FO) linear time-invariant (LTI) state-space systems is presented. A new system is formed by interconnecting given FO systems using cascade, feedback, parallel interconnections. The stability requirement for such a system is that all zeros of a non-polynomial characteristic equation must be within the unit circle on the complex z-plane. The obtained...
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IPSJ Transactions on System LSI Design Methodology
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The B-Li System. Calorimetric and Theoretical Studies / Układ B-Li. Badania Kalorymetryczne I Teoretyczne
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Hydrogenation Behavior of Mg–Li Alloys
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Calorimetric study of the Li-Zn system
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Calorimetric measurements of the Li Pd system
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Thermodynamic properties of Li-Pb system
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Calorimetric investigation of the Li Pt system
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A selection of PID type controller settings via LQR approach for two-wheeled balancing robot
PublicationThe problem of PID type controller tuning has been addressed in this paper. In particular, a method of selection of PD settings based on the solution of linear–quadratic optimisation problem using the energy criterion has been investigated. Thus, the possibility of transforming optimal settings of the linear–quadratic regulator into the settings of the controller in the classical control system has been given. The presented methodology...
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Thermodynamic description of the Ga-Li-Zn system
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Thermodynamic description of the Ge-In-Li liquid alloys
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Calorimetric measurements of the Ca-Li liquid alloys
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Thermodynamic description of the Ge-Li liquid alloys
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Thermodynamic properties of liquid Ag-Li alloys
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PLC-based Implementation of Stochastic Optimization Method in the Form of Evolutionary Strategies for PID, LQR, and MPC Control
PublicationProgrammable logic controllers (PLCs) are usually equipped with only basic direct control algorithms like proportional-integral-derivative (PID). Modules included in engineering software running on a personal computer (PC) are usually used to tune controllers. In this article, an alternative approach is considered, i.e. the development of a stochastic optimizer based on the (μ,λ) evolution strategy (ES) in a PLC. For this purpose,...
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/sup 6/LiI(Eu) in neutron and /spl gamma/-ray spectrometry-a highly sensitive thermal neutron detector
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Enthalpy of Mixing of Ternary Li-Pb-Sb Alloys
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Calorimetric study and thermodynamic description of liquid In-Li alloys
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Calorimetric measurements of liquid (Al + Li + Zn) alloys
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Thermodynamic Properties of Li-Sb Liquid Solution by QAM
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Mixing enthalpy of liquid Ga–Li–Zn alloys
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Electromotive Force Measurements in Liquid Li-Si Alloys
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Mechanism of Li nucleation at graphite anodes and mitigation strategies
PublicationLithium metal plating is a critical safety issue in Li-ion cells with graphite anodes, and contributes significantly to ageing, drastically limiting the lifetime and inducing capacity loss. Nonetheless, the nucleation mechanism of metallic Li on graphite anodes is still poorly understood. But in-depth understanding is needed to rationally design mitigation measures. In this work, we conducted FirstPrinciples studies to elucidate...
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LQT – czy technologie poprawiające jakość życia mogą stać się szansą rozwojową dla pomorskich przedsiębiorstw MSP
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STRUKTURA I TRANSPORT ELEKTRYCZNY UKŁADU Li-Ti-O
PublicationTytanian litu Li1+xTi2-xO4 (0 ≤ x ≤ 1/3) jest tlenkiem, który dzięki swym unikalnym właściwościom od połowy lat 70 pozostaje źródłem zainteresowania i obiektem badań naukowców. Jedną z najciekawszych właściwości tego związku jest przejście w stan nadprzewodzący poniżej temperatury około 13 K i jej silna zależność od stechiometrii układu. Oprócz nadprzewodnictwa wyróżniają go ciekawe właściwości elektrochemiczne oraz fotokatalityczne,...
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Enthalpy of formation of intermetallic compounds from the Li–Si system
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The Ag–Li system's experimental and ab initio thermodynamic dataset
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Calorimetric Measurements of Ga-Li System by Direct Reaction Method
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Is the Solid Electrolyte Interphase an Extra-Charge Reservoir in Li-Ion Batteries?
PublicationAdvanced metal oxide electrodes in Li-ion batteries usually show reversible capacities exceeding the theoretically expected ones. Despite many studies and tentative interpretations, the origin of this extra-capacity is not assessed yet. Lithium storage can be increased through different chemical processes developing in the electrodes during charging cycles. The solid electrolyte interface (SEI), formed already during the first...
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Calorimetric measurements and first principles to study the (Ag-Li) liquid system
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Calorimetric and Electromotive Force Measurements of Al-Li-Zn Liquid Solutions
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Calorimetric studies and thermodynamic properties of Li-Pb-Pd liquid alloys
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Calorimetric study and thermodynamic description of Ga-Ge-Li liquid alloys
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Formation enthalpy of Ga-Li intermetallic phases. Experiment vs. calculations
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Thermodynamic properties of liquid Ga–Li alloys: Experiment vs. modeling
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Mechanisms of Li deposition on graphite anodes: surface coverage and cluster growth
PublicationLi plating on the anode is a side reaction in Li-ion batteries which competes with Li intercalation and leads to loss of capacity. Growth of Li clusters into dendrites is a potential safety hazard for batteries which can lead to internal short-circuit and fires. We consider two possibilities of Li deposition on the surface of graphite anode: deposition of Li+ ions uniformly on the surface and deposition of clusters of metallic...
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Advanced Control With PLC—Code Generator for aMPC Controller Implementation and Cooperation With External Computational Server for Dealing With Multidimensionality, Constraints and LMI Based Robustness
PublicationThe manufacturers of Programmable Logic Controllers (PLC) usually equip their products with extremely simple control algorithms, such as PID and on-off regulators. However, modern PLCs have much more efficient processors and extensive memory, which enables implementing more sophisticated controllers. The paper discusses issues related to the implementation of matrix operations, time limitations for code execution within one PLC...
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Potential energy surfaces of the low-lying electronic states of the Li+LiCs system
PublicationAb initio quantum chemistry calculations are performed for the mixed alkali triatomic system. Global minima of the ground and first excited doublet states of the trimer are found and Born-Oppenheimer potential energy surfaces of the Li atom interacting with the LiCs molecule were calculated for these states. The lithium atom is placed at various distances and bond angles from the lithium-caesium dimer. Three-body nonadditive forces...
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Binder-induced surface structure evolution effects on Li-ion battery performance
PublicationA comparative investigation on binder induced chemical and morphological evolution of Li4Ti5O12 electrodes was performed via X-ray photoemission spectroscopy, scanning electron microscopy, and electrochemical measurements. Composite electrodes were obtained using three different binders (PAA, PVdF, and CMC) with 80:10:10 ratio of active material:carbon:binder. The electrochemical performances of the electrodes, were found to be...
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Calorimetric and XRD studies of Ag-rich alloys from Ag-Li system
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Enthalpy of formation of Li2Sb and Li3Sb and mixing enthalpy of liquid Li–Sb alloys
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Phase diagram, thermodynamic studies, and ab-initio calculations of the Ge-Li system
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Structural and physical studies of the Ag-rich alloys from Ag-Li system
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Calorimetric measurements of the Li–Zn system. Direct reaction method and mixing enthalpy
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Li–Si phase diagram: Enthalpy of mixing, thermodynamic stability, and coherent assessment
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Thermodynamic properties of Ga-In-Li alloys - a potential material for liquid metal batteries
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