Filters
total: 5666
filtered: 3183
-
Catalog
- Publications 3183 available results
- Journals 237 available results
- Conferences 17 available results
- Publishing Houses 2 available results
- People 218 available results
- Inventions 8 available results
- Projects 20 available results
- Laboratories 2 available results
- Research Teams 4 available results
- Research Equipment 2 available results
- e-Learning Courses 124 available results
- Events 5 available results
- Open Research Data 1844 available results
Chosen catalog filters
displaying 1000 best results Help
Search results for: SENSORLESS CONTROL
-
J-lossless and extended J-lossless factorisations approach for delta do main Hinf control.
Publication.
-
Modification of the structural model of manipulator's carrying system for a use of modal control at energy performance index.
PublicationW pracy rozważa się drgania niestacjonarnego układu nośnego manipulatora IRb-6 modelowanego dyskretnie metodą sztywnych elementów skończonych. Z uwagi na gwałtowne ruchy (start, zatrzymanie) poszczególnych członów manipulatora, jest to problem o dużym znaczeniu praktycznym. Jednym ze sposobów nadzorowania tych drgań jest wykorzystanie sterowania modalnego przy energetycznym wskaźniku jakości. Uwzględnia on zmianę w czasie względem...
-
Selected dynamic properties of adaptive proportional observer of induction motor state variables
PublicationThis paper presents problems related to the design and the stability of adaptive proportional observer which is used for estimation of magnetic flux and motor speed in sensorless control systems of induction motor. The gain matrix of the observer was chosen by genetic algorithm and alternatively by pole placement method. It has been shown that adaptive proportional observer is stable if the...
-
Polish FDI in Central Asian Countries
PublicationSince gaining independence, Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan gradually opened their markets to foreign investors. Before Poland’s accession to the European Union, the activities of Polish investors in Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan were based on bilateral treaties concluded by Poland with those countries. Later, except Turkmenistan, they were governed by the partnership...
-
CENTRAL-FORCE DECOMPOSITION OF THE TERSOFF POTENTIAL
PublicationCentral forces play important role in the analysis of results obtained with particle simulation methods, since they allow evaluating stress fields. In this work we derive expressions for a central-force decompositon of the Tersoff potential, which is often used to describe interatomic interactions in covalently bonded materials. We simplify the obtained expressions and discuss their properties.
-
The Water Needs of Grapevines in Central Poland
Publication -
The history of the domestic cat in Central Europe
Publication -
Automatyczna kontrola jakości mikroziaren ściernych.
PublicationPrzedstawiono skomputeryzowaną analizę wielkości i kształtu mikroziaren ściernych przy użyciu specjalnego opraogramowania MultiScan v.6.08 oraz zautomatyzowane pomiary z wykorzystaniem analizatora laserowego Analysette 22. Analizator laserowy jest uniwersalnym urządzeniem do pomiarów wymiarów ziaren i mikroziaren.
-
Zasady kontroli fiansowej w przedsiębiorstwie.
PublicationArtykuł opisuje główne zasady i kryteria kontroli finansowej jakie należy stosować w zarządzaniu przedsiębiorstwem. W artykule został poruszony także problem wiarygodności działań kontroli i adekwatności wyników kontroli do poddanych jej ocenie zjawisk oraz ujednolicenia zasad kontroli i sprawozdawczości kontrolnej.
-
Kontrola ostrzy narzędzi metodami wizyjnymi.
PublicationW pracy scharakteryzowano problemy występujące podczas kontroli małogabarytowych i skomplikowanych brył przestrzennych jakimi są ostrza skrawające pił. Przedstawiono właściwości opracowanego wizyjnego kontrolera ostrzy pił tarczowych WKOPTar, który może być wykorzystywany do kontroli ostrzy na każdym etapie procesu technologicznego.
-
Wizyjna kontrola ostrzy pił tarczowych.
PublicationDokładność geometrii ostrzy oraz ich położenie w korpusie piły są istotnymi elementami jakości pił tarczowych. Automatyczną i kompleksową kontrolę geometrii ostrzy pił tarczowych prowadzić można przy zastosowaniu wizyjnego kontrolera geometrii ostrzy pił tarczowych WKOPTar. W artykule opisano możliwości kontrolera, a także pokazano szereg przykładowych wyników badań geometrii ostrzy wraz z ich interpretacją.
-
S6K1 controls autophagosome maturation in autophagy induced by sulforaphane or serum deprivation
Publication -
Low-Cost Flight Simulator with Possibility of Modeling of Flight Controls Failures
PublicationThe goal of this paper is to present a development of a low cost flight simulator, that allows to simulate flight controls failures. Cessna 172 has been chosen as an example of a general aviation aircraft and the flight model has been implemented in Simulink. The model allows for easy integration of an experimental autopilot, using various strategies. Aerodynamic coefficients have been calculated using software called DATCOM. Such...
-
Security Requirements and Controls for Incident Information Sharing in the Polish Power System
PublicationAmong the strategies of protecting information assets of the power system, sharing of information about current cybersecurity incidents between energy operators appears to be a prerequisite. Exchange of information leads to the effective detection of attacks and exploited vulnerabilities as well as the identification of countermeasures. This paper presents the results of continuation of our works on developing a secure and efficient...
-
Integrated algorithm for selecting the location and control of energy storage units to improve the voltage level in distribution grids
PublicationThis paper refers to the issue that mainly appears in distribution grids, where renewable energy sources (RES) are widely installed. In such grids, one of the main problems is the coordination of energy production time with demand time, especially if photovoltaic energy sources are present. To face this problem, battery energy storage units (ESU) can be installed. In recent years, more and more attention has been paid to optimizing...
-
Comparative Study of Balancing SRT by Using Modified ASM2d in Control and Operation Strategy at Full-Scale WWTP
PublicationDetailed knowledge on the composition of the influent going into the wastewater treatment system is essential for the development of a reliable computer model. In the context of WWTPs (wastewater treatment plants), the wastewater characteristics are not only important for activated sludge system modelling, but also have an impact on the appropriate control of single unit operations. The aim of this study was to evaluate the concepts...
-
The possibility of the application of a potentiometric sensor with all-solid-state electrodes for the quality control of different natural waters
PublicationThe quality of various natural waters was examined by a new potentiometric sensor with six all solid state electrodes containing an appropriate lipophilic compound in a polymer membrane. Physicochemical parameters such as conductivity and acidity of tested waters were also tested. All waters were neutral or slightly alkaline and contained different ions (e.g., Cl–) due to the place of their sampling (a coastal zone and a moraine...
-
The Rate of Improvement in Metabolic Control in Children with Diabetes Mellitus Type 1 on Insulin Glargine Depends on Age
Publication -
Outcomes of sleeve gastrectomy in patients older than 60 years: a multicenter matched case-control study
Publication -
Effect of Significant Postoperative Complications on Decision Regret After Laparoscopic Sleeve Gastrectomy: a Case–Control Study
Publication -
Stress coping strategies and their clinical correlates in patients with psychosis at various stages of illness: A case‐control study
Publication -
Clinical characteristics, antihypertensive medication use and blood pressure control among patients with treatment-resistant hypertension
Publication -
Increased risk of thyroid pathology in patients with thyroid hemiagenesis: results of a large cohort case–control study
Publication -
Fuzzy Based Maximum Power Point Tracking (MPPT) Control System for Photovoltaic Power Generation System
Publication -
Influence of geometry of iron poles on the cogging torque of a field control axial flux permanent magnet machine
Publication -
Facile and cost-effective technique to control europium oxidation states in glassy fluorophosphate matrices with tunable photoluminescence
Publication -
Characteristics of Emergencies in the Workplace from the Perspective of the Emergency Medical Services: A 4-Year Case-Control Study
Publication -
Rivers Try Harder. Reversed “Differential Erosion” as Geological Control of Flood in the Large Fluvial Systems in Poland
Publication -
Towards a Method Evaluating Control Actions in STPA-Based Model of Ship-Ship Collision Avoidance Process
Publication -
Toward a Method Evaluating Control Actions in STPA-Based Model of Ship-Ship Collision Avoidance Process
Publication -
Automatic configuration of FMC boards for FPGA-based reconfigurable measurement and control systems with mezzanines in FMC standard
Publication -
FPGA-based LLRF control module for x-ray free electron laser and TESLA feedback system
Publication -
<title>TESLA cavity modeling and digital implementation with FPGA technology solution for control system development</title>
Publication -
RPC communication layer and introduction to data protection for embedded PC based control and data acquisition module
Publication -
<title>MatLab script to C code converter for embedded processors of FLASH LLRF control system</title>
Publication -
Automatic HDL firmware generation for FPGA-based reconfigurable measurement and control systems with mezzanines in FMC standard
Publication -
Control of Luminescence by Tuning of Crystal Symmetry and Local Structure in Mn4+ -Activated Narrow Band Fluoride Phosphors
Publication -
Multi-Site Cation Control of Ultra-Broadband Near-Infrared Phosphors for Application in Light-Emitting Diodes
Publication -
Pounding mitigation of a short-span cable-stayed bridge using a new hybrid passive control system
PublicationThis paper investigates the effectiveness of a new hybrid passive control system on the seismic response of an existing steel cable-stayed bridge considering the pounding effect. The proposed hybrid passive control system comprises a seismic isolator and a metallic damper. The bridge is located in a high seismic zone and has suffered several damages including the earthquake-induced pounding damage during the 1988 earthquake....
-
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,...
-
The sensors-based artificial intelligence Train Control and Monitoring System (TCMS) for managing the railway transport fleet
PublicationRailways deliver a safe and sustainable form of transport and are typically pointed as one the safest form of transportation. Nevertheless, train accidents still happen, and when they happen, the consequences concern serious fatalities and injuries. Since every case is unique, the most frequent causes of train accidents are mechanical derailments, failures, as well as human errors and ignorance. In order to mitigate the risks posed...
-
ANALYSIS OF IMPACT of SHIP model parameters on changes of control quality index in ship dynamic positioning system
PublicationIn this work there is presented an analysis of impact of ship model parameters on changes of control quality index in a ship dynamic positioning system designed with the use of a backstepping adaptive controller. Assessment of the impact of ship model parameters was performed on the basis of Pareto-Lorentz curves and ABC method in order to determine sets of the parameters which have either crucial, moderate or low impact on objective...
-
Soft Real-Time Communication with WebSocket and WebRTC Protocols Performance Analysis for Web-based Control Loops
PublicationThe web browser has become an access window for content and services. The browser is available on almost any device connected to the network, regardless of its intended use: desktop, mobile device, computing server, e-book reader etc. Browsers are used by people to read news, contact the world, to check a bank account, register a visit at the doctor, watching video content, electronic purchases, using web versions of the office...
-
Control Strategy of a Five-Phase Induction Machine Supplied by the Current Source Inverter With the Third Harmonic Injection
PublicationIn the five-phase induction machine (IM), it is possible to better use the electromagnetic circuit than in the three-phase IM. This requires the use of an adequate converter system which will be supplied by an induction machine. The electric drive system described, in this article, includes the five-phase induction machine supplied by the current source inverter (CSI). The proposed novelty—not presented previously—is the control...
-
Robustness Analysis of a Distributed MPC Control System of a Turbo-Generator Set of a Nuclear Plant – Disturbance Issues
PublicationTypically, there are two main control loops with PI controllers operating at each turbo-generator set. In this paper, a distributed model predictive controller with local quadratic model predictive controllers for the turbine generator is proposed instead of a set of classical PI controllers. The local quadratic predictive controllers utilize step-response models for the controlled system components. The parameters of these models...
-
Critical Review on Robust Speed Control Techniques for Permanent Magnet Synchronous Motor (PMSM) Speed Regulation
PublicationThe permanent magnet synchronous motor (PMSM) is a highly efficient energy saving machine. Due to its simple structural characteristics, good heat radiation capability, and high efficiency, PMSMs are gradually replacing AC induction motors in many industrial applications. The PMSM has a nonlinear system and lies on parameters that differ over time with complex high-class dynamics. To achieve the excessive performance operation...
-
Trailing-Edge Separation Control of a NACA 0015 Airfoil Using Dielectric-Barrier-Discharge Plasma Actuators
PublicationThis paper presents a part of the works conducted in the Plasmaero European project (task 3.1), where the trailing-edge flow separation of a NACA 0015 airfoil has been controlled using four different dielectric barrier discharge (DBD) actuator types at three institutions across Europe. The results show that it is possible to enhance the aerodynamic performance of aircraft at speeds up to 40 m/s. Dielectric-barrier-discharge vortex...
-
Two-Level Multivariable Control System of Dissolved Oxygen Tracking and Aeration System for Activated Sludge Processes
PublicationThe problem of tracking dissolved oxygen is one of the most complex and fundamental issues related to biological processes. The dissolved oxygen level in aerobic tanks has significant influence on behaviour and activity of microorganism inhabiting the plant. Aerated tanks are supplied with air from an aeration system (blowers, pipes, throttling valves, diffusers). It is a complex dynamic system governed by nonlinear hybrid dynamics....
-
Two-Step Model Based Adaptive Controller for Dissolved Oxygen Control in Sequencing Wastewater Batch Reactor
PublicationDissolved Oxygen (DO) concentration is a crucial parameter for efficient operation of biological processes taking place in the activated sludge Wastewater Treatment Plant (WWTP). High-quality DO control is difficult to achieve because of complex nonlinear behavior of the plant and substantial influent disturbances. A method to improve the Direct Model Reference Adaptive Control (DMRAC) technology in application to DO tracking for...
-
Wieloobszarowa regulacja systemu turbogeneratora elektrowni jądrowej =Multiregional control of nuclear power plant turbogenerator system
PublicationW artykule przedstawiono propozycję zaawansowanej struktury sterowania układem turbogeneratora w szerokim zakresie zmian zapotrzebowania na moc czynną. Dla potrzeb syntezy tej struktury wykorzystano nieliniowe, dynamiczne modele turbiny parowej i generatora synchronicznego współpracującego z systemem elektroenergetycznym. Zaproponowane algorytmy sterowania oparte są odpowiednio o wieloobszarowe regulatory rozmyte, z lokalnymi regulatorami...