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Search results for: KONTROLA DOSTEPU
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Pomiarowo-kontrolny system zastosowany w procesie produkcji central do systemów alarmowych.
PublicationPrzedstawiono strukturę funkcjonalną systemu pomiarowo-kontrolnego zastosowanego w procesie produkcji central do systemów alarmowych. Opisano szerzej stanowisko pomiarowo-kontrolne które zostało zastosowane w systemie obiegu informacji w procesie wytwarzania urządzen alarmowych.
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OPRACOWANIE STUDIUM WYKONALNOŚCI DLA ZADANIA „POPRAWA DOSTĘPU KOLEJOWEGO DO PORTU MORSKIEGO W GDYNI – PRACE PRZYGOTOWAWCZE” POIiŚ 7.1-98 ETAP II ANALIZA STANU ISTNIEJĄCEGO INFRASTRUKTURY KOLEJOWEJ I TABORU W ZAKRESIE SIECI TRAKCYJNEJ, ZASILANIA TRAKCYJNEGO I LINII POTRZEB NIETRAKCYJNYCH
PublicationW opracowaniu dokonano analizy stanu istniejącego układu zasilania elektrotrakcyjnego na obszarze stacji kolejowej Gdynia Port. Prace wykonano w ramach projektu Unii Europejskiej i Narodowej Strategii Spójności
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Application ofMsplitestimation to determine control points displacements in networks with unstable reference system
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<title>Cavity control system model simulations for the TESLA linear accelerator</title>
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Optical Fibre Control-Measurement Systems Of Compound HV/HP Electrical Equipment
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<title>Cavity control system essential modeling for the TESLA linear accelerator</title>
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The method of multispectral image processing of phytoplankton processing for environmental control of water pollution
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TESLA cavity modeling and digital implementation in FPGA technology for control system development
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The Safety and Benefits of Laparoscopic Sleeve Gastrectomy in Elderly Patients: a Case-Control Study
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Research on a control system based on stepping motor for ship's controllable pitch propellers
PublicationW artykule przedstawiono opis stanowiska laboratoryjnego do badania serwomechanizmów okrętowych śrub nastawnych małej mocy oraz opracowany układ sterowania zdalnego śruby z wykorzystaniem elektrycznego silnika krokowego. Przedstawiono także wyniki pierwszej serii badań układu sterowania śruby nieobciążonej dla skokowego zadawanych wartości skoku śruby przy dwóch różnych prędkościach obrotowych silnika krokowego.
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Security aspects in verification of the safety integrity level of distributed control and protection systems
PublicationPrzedstawiono najważniejsze zagadnienia zwišzane z weryfikacjš poziomu nienaruszalnoci bezpieczeństwa SIL rozproszonych systemów sterowania i zabezpieczeń z uwzględnieniem aspektów ochrony informacji. Przedstawiono ilociowš metodę weryfikacji poziomu SIL z wykorzystaniem wskaników różnicowych oraz dwuparametrowš funkcję kryterialnš łaczšcš wymagania SIL oraz EAL (poziom uzasadnionego zaufania dla ochrony informacji).
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<title>Estimation and control of discrete fractional order states-space systems</title>
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Control Theory Education in the Distance Education B.Eng. Studies at Warsaw University of Technology
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Tuning of the Titanium Oxide Surface to Control Magnetic Properties of Thin Iron Films
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TEMPERATURE AND RELATIVE HUMIDITY CONTROL IN MASS AND DECAY PREVENTION IN POSTHARVEST HANDLING OF PEACHES
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Validation of the Elderly Traumatic Brain Injury Score: Observational Case Control Study
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Transient torsional vibrations control in the geared drive trains of the hot rolling mills
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Dynamics control of powered hydraulic roof supports in the underground longwall mining complex
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Size Control of Cobalt-Doped ZnO Nanoparticles Obtained in Microwave Solvothermal Synthesis
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Comparative Analysis of Regular Grid Based Algorithms in the Design of Graphical Control Panels
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Subjective Perception of the Background Color and Layout in the Design of Typical Graphical Control Panels
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Eye Tracking Based Experimental Study on Basic Digital Control Panel Usability
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Induction Motor Multiscalar Model Based Sensorless Control Using Power Measurement
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Research of hydrotronic variable displacement radial piston pump with electro -pneumatic control
PublicationThe paper presents the developed new electro-pneumatic control (pneumotronic) system for hydraulic fixed-displacement radial piston pump. Hydraulic fixed-displacement radial piston pump equipped with the proposed control system changes into hydrotronic variable-displacement radial piston pump. Pump flow rate control is realized by means of programmable logic controller, electro-pneumatic valves, pneumatic cylinders and a sensor.
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Nonlinear control of induction motor in field weakning region with consideration of stator flux
PublicationMetody nieliniowgo sterowania mogą poprawić właściwości silnika indukcyjnego w stanach przejściowych wektora strumienia. Badano sterowanie oparte na modelu multiskalarnym silnika indukcyjnego w zakresie osłabiania pola. Dwie nowe zmienne wejściowe pojawiające się w modelu multiskalarnym są równe czynnej i biernej mocy silnika. Pokazano, że te wielkości mogą byc kompensowane, jeżeli rozważane są jako mierzone zakłócenia. Maksymalny...
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Single-pill combinations, hypertension control and clinical outcomes: potential, pitfalls and solutions
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Baroreflex Control of Sympathetic Nerve Activity and Heart Rate in Obstructive Sleep Apnea
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Power System Stabilizer as a Part of a Generator MPC Adaptive Predictive Control System
PublicationIn this paper, a model predictive controller based on a generator model for prediction purposes is proposed to replace a standard generator controller with a stabilizer of a power system. Such a local controller utilizes an input-output model of the system taking into consideration not only a generator voltage Ug but also an additional, auxiliary signal (e.g., α, Pg, or ωg). This additional piece of information allows for taking...
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A case study of robust sliding mode control applied to inverted pendulum on a cart
PublicationA control problem of an inverted pendulum on a cart has been addressed in this paper. In particular, a synthesis of alternative sliding mode control for stabilisation of an inverted pendulum at an upper equilibrium point has been investigated. Hence, the feasibility of implementing the developed control system, taking into account primarily the friction of the cart against the gantry and the limited length of the gantry, in a real...
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Functional safety with cybersecurity for the control and protection systems on example of the oil port infrastructure
PublicationSafety and cybersecurity aspects consist of two different group of functional requirements for the industrial control and protection systems in the oil port installation. It is the main reason why the analyses of safety and cybersecurity shouldn’t be integrated directly. These article presented some important issues of the functional safety analysis with regard to cybersecurity aspects in the oil seaport infrastructure. The proposed...
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Sensorless Multiscalar Control of Five-Phase Induction Machine with Inverter Output Filter
PublicationThe paper presents a complete solution for speed sensorless control system for five-phase induction motor with voltage inverter, LC filter and nonlinear control of combined fundamental and third harmonic flux distribution. The control principle, also known as multiscalar control, nonlinear control or natural variables control, is based on a use of properly selected scalar variables in control feedback to linearize controlled system....
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The QDMC Model Predictive Controller for the Nuclear Power Plant Steam Turbine Control
PublicationThere are typically two main control loops with PI con trollers operating at each turbo-generator set. In this paper a model predictive controller QDMC for the steam turbine is proposed - instead of a typical PI controller. The QDMC controller utilize a step-response model for the controlled system. This model parameters are determined, based on the simplified and linear model of turbo-generator set, which parameters are identified...
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Model Predictive Super-Twisting Sliding Mode Control for An Autonomous Surface Vehicle
PublicationThis paper presents a new robust Model Predictive Control (MPC) algorithm for trajectory tracking of an Autonomous Surface Vehicle (ASV) in presence of the time-varying external disturbances including winds, waves and ocean currents as well as dynamical uncertainties. For fulfilling the robustness property, a sliding mode control-based procedure for designing of MPC and a super-twisting term are adopted. The MPC algorithm has been...
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Sphere Drive and Control System for Haptic Interaction With Physical, Virtual, and Augmented Reality
PublicationA system for haptic interaction with physical, virtual, and augmented realities, founded on drive and measurement elements (DMEs), is considered. The system consists of eight DME rolls equipped with linear actuators, able to measure their angular velocity, drive the sphere, and adjust downforce (pressing the roll against the sphere). Two modeling issues are addressed. Special effort is put in to compensate for various technical...
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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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Active Control of Highly Autocorrelated Machinery Noise in Multivariate Nonminimum Phase Systems
PublicationIn this paper, a novel multivariate active noise control scheme, designed to attenuate disturbances with high autocorrelation characteristics and preserve background signals, is proposed. The algorithm belongs to the class of feedback controllers and, unlike the popular feedforward FX-LMS approach, does not require availability of a reference signal. The proposed approach draws its inspiration from the iterative learning control...
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Visual Content Learning in a Cognitive Vision Platform for Hazard Control (CVP-HC)
PublicationThis work is part of an effort for the development of a Cognitive Vision Platform for Hazard Control (CVP-HC) for applications in industrial workplaces, adaptable to a wide range of environments. The paper focuses on hazards resulted from the nonuse of personal protective equipment (PPE). Given the results of previous analysis of supervised techniques for the problem of classification of a few PPE (boots, hard hats, and gloves...
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Negative impact of constant RPM control strategy on ship NOx emission in waves
PublicationIn severe wave conditions, the ship propulsion system is loaded with high fluctuations due to external disturbances. The highly fluctuating loads enforce radical changes in the main engine torque, which in turn demands variation of the fuel rate injected into the cylinders if a constant rotational speed strategy is applied. Therefore, the temperature of gases varies to a large extent during the combustion process in the cylinders....
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Autonomous Control of the Underwater Remotely Operated Vehicle in Collision Situation with Stationary Obstacle
PublicationThe article considers the problem of autonomous control of the underwater remotely operated vehicle mini Remotely Operated Vehicle (ROV) in a collision situation with a stationary obstacle. The control of the collision avoidance process is presented as a synthesis of fuzzy proportional-differential controllers for the control of distance and orientation concerning the detected stationary obstacle. The control of the submergence...
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Pointing device for elders with low cost and mixed manual-gaze control interface
PublicationW artykule przedstawiono projekt interfejsu pozwalającego na zastąpienie standardowej myszki komputerowej sterowaniem wzrokowym, z nieznacznym manualnym wspomaganiem. Manualne wspomaganie ma na celu korekcję współrzędnych kursora.
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MPPT control - a way to the maximization of energy amount obtained from the PV module
PublicationW układzie MPPT (Maximum Power Point Tracking) poziom mocy maksymalnej jest dynamicznie śledzony dla różnych poziomów napromieniowania i temperatur przy użyciu pamięci, zaprojektowanej jako sterowany mikroprocesorem moduł. Zastosowany algorytm w sposób ciągły poszukuje maksymalnej wartości mocy podawanej ze źródła (modułów PV) oraz pobieranej przez obciążenie. Napięcie wyjściowe z układu MPPT zależy od aktualnych warunków, w jakich...
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Influence of the method of the control of the hybrid contactless short-circuit limiter on power quality
PublicationW artykule przedstawiono wpływ sterowania bezstykowego ogranicznika prądów zwarciowych na ograniczanie zapadów napięcia. Scharakteryzowano podstawowe własności ogranicznika oraz układu sterowania jego pracą. Ponieważ prąd zwarciowy jest detekowany przez dedykowany superkrótki bezpiecznik sterowanie musi być dostosowane do czasu przedrukowego i łukowego topika, które zależą od aktualnej wartości prądu i aktualnej konfiguracji obwodu....
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Shock wave - boundary layer interaction control by air-jet streamwise vortices
PublicationW pracy przedstawiono wyniki badań eksperymentalnych i numerycznych oddziaływania fali uderzeniowej z warstwą przyścienną. Badania eksperymentalne wykonano dla różnych geometrii dysz. Przedstawiono wpływ generatorów wirów wzdłużnych na strukturę przepływu i możliwość kontrolowania oderwania za falą uderzeniową. Przeprowadzono optymalizację konfiguracji generatora wirów w przepływie naddźwiękowym w oparciu wyniki obliczeń przepływu...
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Operating and economical conditions of cooling water control for marine steam turbines condensers
PublicationW pracy dokonano analizy ekonomicznej i eksploatacyjnej sterowania pracą pomp wody chłodzącej skraplacze turbin okrętowych. Wzięto pod uwagę cechy konstrukcyjne pomp wody chłodzącej skraplacze główne i najnowsze wyniki badań dla takich pomp w zastosowaniach lądowych. Uwagę skupiono przede wszystkim na turbinowych parowych siłowniach okrętowych.
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Measurements of ASON/GMPLS connection control layer performance according to the ETSI methodology
PublicationMeasurements of performance have always been crucial for evaluation of telecommunication systems, especially for implementation of network control elements responsible for connection handling which regards to bandwidth reservation, modification and release. That problem also arises in Automatically Switched Optical Network/Generalized Multiprotocol Label Switching (ASON/GMLPS) architecture, which is considered as one of the components...
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Softly Switched Robustly Feasible Model Predictive Control for Nonlinear Network Systems
PublicationIt is common that an efficient constrained plant operation under full range of disturbance inputs require meeting different sets of control objectives. This calls for application of model predictive controllers each of them being best fit into specific operating conditions. It further requires that not only designing robustly feasible model predictive controllers is needed to satisfy the real plant state/output constraints, but...
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A predictive estimation based control strategy for a quasi-resonant dc-link inverter
PublicationIn this paper the predictive estimation based control strategy for a quasi-resonant dc link inverter (PQRDCLI) is developed. Instead of direct measurement of dc link input inverter current – its estimation with one step prediction is applied. The PQRDCLI fed induction motor, controlled with a predictive current estimation stabilized inverter output voltage slopes independently of load. Moreover, reduction of overvoltage spikes...
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Certified Reference Material - as a necessary tool for the quality control and quality assurance of measurements
PublicationReference materials are necessary to control and ensure the quality of the measurements. The demand for analytical information on the composition of different material objects makes it necessary to produce an even wider range of materials.
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ESTIMATION OF NONSTATIONARY HARMONIC SIGNALS AND ITS APPLICATION TO ACTIVE CONTROL OF MRI NOISE
PublicationA new adaptive comb filtering algorithm, capable of tracking the fundamental frequency and amplitudes of different frequency components of a nonstationary harmonic signal embedded in white measurement noise, is proposed. Frequency tracking characteristics of the new scheme are studied analytically, proving (under Gaussian assumptions and optimal tuning) its statistical efficiency for quasi-linear frequency changes. Laboratory tests...
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VIBRATION SURVEILLANCE DURING MILLING OF FLEXIBLE DETAILS WITH A USE OF THE ACTIVE OPTIMAL CONTROL
PublicationThe main goal of modern machining operations is to achieve increasingly better performance. High Speed Machining and/or High Performance Cutting, despite a lot of advantages, have also some drawbacks, for example, a possibility of losing stability and development of self-excited chatter vibration. This paper presents an approach of vibration surveillance during high speed milling with a use of active optimal control. Non-stationary...