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Detection of weak signals in noise
Tichavský, Petr
2018 - Czech
In this report, a bound on amplitude of impuls signal detection in stationary background noise is computed.\nIt was evaluated for an experiment with acoustic emission from mechanically strained sample. Stanovili jsme hranice pro detekovatelnost impulzního rušení v jinak stacionárním signálu a spočetli je prakticky pro měření akustické emise v experimentu s namáháním vzorku.
Available at various institutes of the ASCR
Detection of weak signals in noise
In this report, a bound on amplitude of impuls signal detection in stationary background noise is computed.\nIt was evaluated for an experiment with acoustic emission from mechanically strained ...
DCTOOL-A4
Bakule, Lubomír; Papík, Martin; Rehák, Branislav
2018 - English
DCTOOL-A4 report presents draft of a manuscript, which is intended to be submitted for publication. The report provides a novel systematic approach to the analysis of asymptotic stability for output event-triggered uncertain centralized control systems. A class of nonlinear but nominally linear systems possessing unknown time-varying bounded uncertainties with known bounds is considered. Uncertainties are allowed in all system matrices. Original LMI-based suffi cient conditions are derived to guarantee asymptotic stability of closed-loop systems with both static output and observer-based feedback loop under even-triggered control. Both these output feedback strategies are extended to model-based uncertain control systems with\nquantized measurements. A logarithmic quantizer is considered. The Lyapunov-based approach and convex optimization serve as the main methods to derive the asymptotic LMI-based stability conditions. Bounds on the inter-event times to avoid the Zeno-effect are proved for all the cases considered. Finally, feasibility and effi ciency of the proposed strategies is demonstrated by providing numerical examples.
Keywords:
event-triggered control; networked control systems; large scale complex systems
Available at various institutes of the ASCR
DCTOOL-A4
DCTOOL-A4 report presents draft of a manuscript, which is intended to be submitted for publication. The report provides a novel systematic approach to the analysis of asymptotic stability for output ...
DCTOOL-A5
Bakule, Lubomír; Papík, Martin; Rehák, Branislav
2018 - English
DCTOOL-A5 presents draft of a manuscript, which is intended to be submitted for publication. This report presents a new method for the decentralized event-triggered control design for large-scale uncertain systems. The results are formulated and proved in terms of linear matrix inequalities. Two design problems are solved: For interconnected systems without any quantization and for interconnected systems with local logarithmic quantizers. Results are illustrated by an example.
Keywords:
decentralized event-triggered control; networked control systems; large scale complex systems
Available at various institutes of the ASCR
DCTOOL-A5
DCTOOL-A5 presents draft of a manuscript, which is intended to be submitted for publication. This report presents a new method for the decentralized event-triggered control design for large-scale ...
Analysis of corrosion damage of steem pipe by acoustic emission: results for a pipe in EBO
Tichavský, Petr
2018 - Czech
We studied acoustics emission of steem pipes from measurements from EBO. We counted frequency of sudden increases of the acoustics emission, which can be used as indicator of corosion demage of the pipes. V práci je studována akustická emise na potrubí s proudící párou, měřená v elektrárně Jaslovské Bohunice. V signálu vyhledáváme výrony akustické emise která amplitudově vyčnívají nad okolním signálem, a jejich relativní frekvence výskytu je považována za indikátor poškození potrubí.
Keywords:
acoustic emission
Available at various institutes of the ASCR
Analysis of corrosion damage of steem pipe by acoustic emission: results for a pipe in EBO
We studied acoustics emission of steem pipes from measurements from EBO. We counted frequency of sudden increases of the acoustics emission, which can be used as indicator of corosion demage of the ...
METHODOLOGY OF VOICE DISORDER EVALUATION FROM VIDEOKYMOGRAPHY RECORDS
Vydrová, J.; Švec, J. G.; Zitová, Barbara; Novozámský, Adam; Zita, Aleš; Šorel, Michal
2017 - Czech
The aim of the methodology „Evaluating voice disorders from videkymographic data“ is to provide a comprehensive information on a new diagnostic method for diagnosis of functional and organic disorders of the voice - videokymography (VKG). The methodology is intended for otorinolaryngology and phoniatry specialists. The methodology will also serve as a study material for both trainers and trainees of the certified course „Videokymography in Medical Practice“. The diagnostic method consists of a patient examination technique and of an evaluation of the examination results. Thie data are automatically evaluated by software created to support the VKG diagnostics. Cílem metodiky „Hodnocení poruch hlasu z videokymografických záznamů“ je podat ucelený soubor\ninformací o nové diagnostické metodě vyšetřování funkčních i organických poruch hlasu – videokymografii (VKG). Metodika je určena pro lékaře otorinolaryngology a foniatry, kteří poruchy\nhlasu diagnostikují a léčí. Metodika bude rovněž sloužit jako studijní materiál pro školitele i školence\ncertifikovaného kurzu „Videokymografie v lékařské praxi“. Diagnostická metoda sestává z techniky vyšetření pacienta a z vyhodnocení výsledku vyšetření. Výsledkem vyšetření je vibrační vzorec hlasivek. Tento vzorec je automaticky vyhodnocen softwarem, který byl k VKG diagnostice vytvořen.
Keywords:
vocal fold analysis; videokymography; computer aided diagnosis
Available at various institutes of the ASCR
METHODOLOGY OF VOICE DISORDER EVALUATION FROM VIDEOKYMOGRAPHY RECORDS
The aim of the methodology „Evaluating voice disorders from videkymographic data“ is to provide a comprehensive information on a new diagnostic method for diagnosis of functional and organic disorders ...
Alternative Formulation of Pay-as-clear Auction in Electricity Markets
Aussel, D.; Červinka, Michal; Henrion, R.; Pištěk, Miroslav
2017 - English
In widely used formulation of pay-as-clear electricity market the clearing price is given by the Lagrange multiplier of the demand sat- isfaction constraint in the problem of the Independent System Operator (ISO). Following this idea, one may usually calculate the market clearing\nprice analytically even for problems of higher dimensions. However, the economic interpretation of such a market setting is in question, since the minimized criterion does not correspond neither to the cost of production nor to the overall payment of consumers. This observation motivated us\nto propose an alternative clearing mechanism where the total payment of consumers is explicitly minimized. We show existence and uniqueness of the clearing price in such a setting.
Keywords:
electricity market; Lagrange multiplier; Independent System Operator
Available at various institutes of the ASCR
Alternative Formulation of Pay-as-clear Auction in Electricity Markets
In widely used formulation of pay-as-clear electricity market the clearing price is given by the Lagrange multiplier of the demand sat- isfaction constraint in the problem of the Independent System ...
Methodic of vertical deflections determination of bridge construction by the radar interferometric technology
Antoš, Filip; Talich, Milan; Glöckner, M.; Böhm, Ondřej; Soukup, Lubomír; Havrlant, Jan; Závrská, M.; Šolc, Jakub
2016 - Czech
The methodology provides guidance for determining the vertical deflection of bridge structures using radar interferometry technology. The vertical deflection of bridges are primarily caused by stress during transit of vehicles. The deflections are simultaneously measured by radar throughout the length of the monitored structure. The measurement is continuous with a high sampling frequency (200 Hz) and with high precision (0.01 mm). It is believed the use of interferometric radar IBIS-S Italian manufacturer IDS. General recommendations and conclusions are valid for every kind of radar. Metodika poskytuje návod pro určování svislých průhybů mostních konstrukcí pomocí technologie radarové interferometrie. Svislé průhyby mostních konstrukcí jsou vyvolány především zatížením při průjezdy vozidel. Průhyby jsou radarem měřeny v celé délce sledované konstrukce současně. Měření je kontinuální s vysokou vzorkovací frekvencí (až 200 Hz) a zároveň i s vysokou přesností (až 0,01 mm). Předpokládá se použití interferometrického radaru IBIS-S italského výrobce IDS. Obecná doporučení a závěry jsou však platná pro každý radar tohoto druhu.
Keywords:
radar interferometry; geodesy; vertical deflections; bridge construction
Available at various institutes of the ASCR
Methodic of vertical deflections determination of bridge construction by the radar interferometric technology
The methodology provides guidance for determining the vertical deflection of bridge structures using radar interferometry technology. The vertical deflection of bridges are primarily caused by stress ...
DCTOOL-A3
Bakule, Lubomír; Papík, Martin; Rehák, Branislav
2016 - English
DCTOOL-A3 is a documentation of Matlab routines developed for the design of decentralized control of large scale complex systems. The current beta version covers three areas as follows:\nReport 4.1 deals with the event-triggered control design for unstructured uncertain systems. Both non-quantized and quantized feedback is analyzed. The results are given in terms of linear matrix inequalities (LMIs). Logarithmic quantizer is used. Numerical example illustrates the effectiveness of the presented results.\nReport 4.2 presents a new decentralized overlapping wireless control design with a switched communication protocol. The method is applied by simulations on the 20-story building structure including the test of robustness of the methods against sensor failures and network node dropouts of a digital network.\nReport 4.3 presents the construction of a new decentralized wireless controller and a set of heuristic algorithms for evaluation of packet dropouts, sensor faults and actuator faults. The digital network operates at the standard frequency used in well-known widely-used industrial protocols. The results are tested at the Benchmark model decomposed into two disjoint substructures. The results are published. Thus, the details are omitted here.
Keywords:
event-triggered control; networked control systems; large scale complex systems
Available at various institutes of the ASCR
DCTOOL-A3
DCTOOL-A3 is a documentation of Matlab routines developed for the design of decentralized control of large scale complex systems. The current beta version covers three areas as follows:\nReport 4.1 ...
Methodics of horizontal movements determination of height objetcs by the radar interferometric technology
Antoš, Filip; Talich, Milan; Glöckner, M.; Böhm, O.; Soukup, Lubomír; Havrlant, Jan; Závrská, M.; Šolc, Jakub
2016 - Czech
The Methodics provides a user with an instruction for horizontal movements determination of height objetcs by the radar interferometric technology. The horizontal movements of height objetcs are roused by the weather conditions or by the object fundament instability or by influence of intrinsic forces caused by a mechanic component attached to the object. The movements of the height objetcs are measured simultaneously in the whole length of the monitored object. The measurement is continuous with high frequency (up to 200 Hz) and very precise (up to 0,01 mm). It is possible to measure remotely, without need of accesss to the object, when natural reflectors of radar signal are parts of the object's surface. If the body of the object, resp. attached metal parts have poor reflection, metal corner reflectors have to be attached to suitable places on the object. Interferometric radar IBIS-S of Italian production is supposed to be used. Nevertheless, the general recomendations and conclusions are valid for any other radar device of this kind. Tato metodika poskytuje návod pro určování vodorovných pohybů výškových objektů pomocí technologie radarové interferometrie. Vodorovné pohyby výškových objektů jsou vyvolány buď vlivem povětrnostních podmínek, nestabilitou základů objektu nebo působením vlastních sil, vyvolaných mechanickým zařízením na objektu. Pohyby výškových objektů jsou pozemním radarem měřeny v celé délce sledovaného objektu současně. Měření je kontinuální s vysokou vzorkovací frekvencí (až 200 Hz) a zároveň i s vysokou přesností (až 0,01 mm). S využitím přirozených odražečů radarového signálu na povrchu objektu je možno pohyby měřit na dálku bez nutnosti přístupu k objektu. Pokud těleso objektu, případně kovové části na něm upevněné, neposkytuje dostatečně kvalitní odraz, je nutné na vhodná místa upevnit kovové koutové odražeče. Předpokládá se použití interferometrického radaru IBIS-S italského výrobce IDS. Obecná doporučení a závěry jsou však platná pro každý radar tohoto druhu.
Keywords:
radar interferometry; GB-InSAR; horizontal movements; geodesy
Available at various institutes of the ASCR
Methodics of horizontal movements determination of height objetcs by the radar interferometric technology
The Methodics provides a user with an instruction for horizontal movements determination of height objetcs by the radar interferometric technology. The horizontal movements of height objetcs are ...
DCTOOL-A2
Bakule, Lubomír; Papík, Martin; Rehák, Branislav
2015 - English
DCTOOL-A2 is a documentation of Matlab routines developed for the design of decentralized control of large scale complex systems in 2015.
Keywords:
decentralized control; event-triggered networked control systems; large scale complex systems
Available at various institutes of the ASCR
DCTOOL-A2
DCTOOL-A2 is a documentation of Matlab routines developed for the design of decentralized control of large scale complex systems in 2015.
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