Стукач Олег Владимирович

Damping of Oscillations by Weak Nonlinear Regulator with Extended Range of Quality Control

2021 · CHAPTER · en

Control problems for objects prone to oscillations in automatic control systems often arise in practice. In some confirmed cases, for almost linear systems it is useful to use linear regulators, otherwise, control objects are nonlinear. Moreover, its nonlinearity cannot be fully compensated by inverse nonlinearity at the object input. In a low-signal mode, transient processes in nonlinear systems can be ideal, but with small changes in the input amplitude, the transient processes can become unstable without a qualitative change in the state. The methodology for ensuring parametric invariance is actively developing. In particular, numerical methods are designing to ensure parametric invariance for systems with indefinitely mathematical descriptions. This paper offers two options for solving the problem of ensuring parametric invariance, which makes it possible to find a parametric synthesis of the system and find some compromise version of the regulation for extended input amplitude ranges. The proposed method is investigated by numerical simulation, and its effectiveness has been demonstrated.

On the Inapplicability of the Pade Approximation for Controlling Object Consisting of Delay Link and Integrator

2021 · CHAPTER · en

Multiple Pseudo-Local Feedbacks for Controlling High-Order Oscillatory Objects

2021 · CHAPTER · en

Development of the Internet of things (IoT) technologies arises many additional problems as energy harvesting. In particular, a long-time controlling object needs a device without an external power supply. The control of technical objects with a high order of mathematical model has a large difficulty if a feature of the object is a high tendency to oscillations due to the ratio of the coefficients in the model. In particular, the tendency to oscillations occurs if the object model has complex roots, or if the model has a transport delay. One such example is a model that consists of two oscillatory objects and a delay loop. Widespread controlling such an objects using a PID controller is very difficult since in the transient process in the resulting system there is a large overshoot and many oscillations. If such an object could be stabilized with additional local feedbacks, the control task would be greatly simplified, but the object does not have corresponding outputs and inputs, therefore local feedbacks cannot be used. The pseudo-local feedback approach assumes the use of virtual fragments of the object's mathematical model in the controller to form such connections that the system perceives as local ones. This paper proposed the use of several pseudo-local feedbacks to control an object with elements that increased its tendency to oscillate. The effectiveness of the proposed approach is confirmed by modeling.

The Peculiar Measure Identifying of the Temperature Leap in the Distributed Raman Sensors

2021 · CHAPTER · en

Technologies for observation of the dangerous production facilities are an important direction. Many practical monitoring problems are solved by using fiber-optic temperature sensors. These sensors are superior to electronic sensors in many aspects – weight, dimensions, and the effect of electromagnetic hindrances. But the most important advantage is the ability to use a single sensor element (fiber) to carry out measurements over several kilometers, which is fundamentally impossible by the electronic measuring instruments. However, fiber-optic measurements are inherently related to the processing of signals with a high level of noise that occurs during optoelectronic conversion. Because of observation systems usually indicated the changes in the measured value, it is necessary to develop methods for identifying small shifts in the signal with the extremely small signal-to-noise ratio. The paper presents a technique for signal processing that characterizes the Stokes and Anti-Stokes components when the fiber is heated in several areas. The technique is based on an algebraic rising in the divergence of the values of the Stokes and Anti-Stokes components with increasing temperature. It was possible to identify the leap of the signal level reliably despite of the increasing the noise spectral density, and it was confirmed by physical modeling.

Оценка качества данных коммерческого учёта тепловой энергии методом полной вариации распознавания ошибок

2021 · ARTICLE · ru

На реальных данных коммерческого учёта тепловой энергии в многоэтажных жилых зданиях города Томска проведены гистограммные оценки метрики общей вариации выбросов методом полной вариации распознавания ошибок. Для сравнения выбраны данные по домам с одинаковыми и разными схемами теплопотребления и материалом стен. Результаты моделирования показывают слож- ность в интерпретации получившихся зависимостей для применяемого метода и необходимость уточне- ния его ограничений. Подтверждена большая экономичность герметичной схемы теплоснабжения в ди- намике теплопотребления по сравнению с открытой схемой, особенно для панельных домов.

Improving of the Control Quality by Root of the Growth Signal Error

2020 · CHAPTER · en

The controller design for a high-order object prone to oscillations under sufficient of interest in automation and robotics is being solved. For the first time, the square root in the error growth detector used as a component for the cost function calculating unit is proposed. Justification for this proposal is given, and the effectiveness of such modification of the cost function is demonstrated on example of object. Software SimInTech was used for some calculations. It was shown that strong procedures of optimization are wide necessary for controller design.

Decentralized Control of Switching Elements in the Intra-Chip Network-on-Chip Routers

2020 · CHAPTER · en

We propose a novel switching element with decentralized control for communication systems. In the paper for convenience we have proposed some fragments of the description of a switching element in the VHDL hardware description language. Such switching elements can become part of the switch fabric of NoC technology routers. In our opinion, the decentralization of the switching elements control provides the following advantages: distributed arbitration rather than centralized; flexible balancing of the information traffic due to the shared use of network buffers for various routes; packet route diversity for the same sources and receivers; simplification of port controllers improved scalability of the intra-chip communication system. In addition, we guess that NoC communications can find application in IoT technology, because it combine routing functions with information processing functions.

Welcome to the 2020 Moscow Workshop on Electronic and Networking Technologies

2020 · CHAPTER · en

MWENT is IEEE-sponsored workshop whose objective is to bring together scientific researchers, engineers, students, technical managers and others from both industry and academia to present and discuss papers. The meeting was established with the support of the IEEE Russia Section to address networking from both fundamental viewpoints as well as system-level perspectives. The Workshop is forum for long-term innovation and original approaches to telecommunications and electron devices problems. We also have outstanding technical topics on many important aspects of network systems – waveform design, channel modeling, performance bounds, multi-user techniques, interference issues, wideband antennas and applications in communications. Internet becomes the hot topic in these days, and we were watching that mobile communication and Internet have revolutionized our way of living as well as working. As we are used to such conveniences, it needs more bandwidth, and more spectrum requirements. The ever increasing demands are challenging to the ingenuity of the microwave and control engineers. This biennial meeting is for all engineers and researchers who work or are interested in future developments of MWENT topics of interest. Distinguished delegates and renowned experts will be participating and delivering keynote addresses and lecturers in the emerging areas. Different levels and characters of presentations are accepted: presentation of research and scientific results, new ideas, valuable conclusions from experience, and state of the art. A special invitation goes to our industrial community to exhibit their latest products, inform us about their services and participate in the conference with papers. We also encourage you to plan ahead and take advantage of the wonderful opportunity to meet and exchange ideas with the largest gathering of experts. The technical program spans most of the key areas in wireless communications and electron devices. As is evident from just those categories alone, the exciting technical program will almost assuredly provide some topics of interest for all attendees. Many papers were received as a result of the open call. In keeping with the goal at MWENT to become one of the highest quality conferences in Moscow, the acceptance rate was less than 70 %. The final Program and Proceedings contains 160 papers, selected from submitted manuscripts through a rigorous review process. Our Scientific Program Committee worked with many reviewers worldwide to select papers for the program. The Organizing Committee extends thanks to the authors and reviewers. Your participation and interest are appreciated. Just as new technologies are not developed in a single laboratory at an identifiable moment in time, new conferences are not successful if they exist only once. Evolving technologies require continuous meetings to provide the interested community an opportunity to maintain the dialog. The participants of MWENT and Tomsk Chapter both recognize this. Therefore, we decided to organize a next event in 2022.

ED/AP/MTT/COM/EMC Tomsk Joint Chapter Moscow Workshop on Electronic and Networking Technologies MWENT 2020

2020 · ARTICLE · en

The three-day MWENT 2020 Workshop, technically co-sponsored by ED-S, endorsed by IEEE Russia Central Section and Tomsk Joint Chapter, was organized in Moscow, Russia. This biennial three-track event has rapidly become one of the highlight workshops on networks and electron devices, gathering researchers from both academia and industry. The host organization was Moscow Institute of Electronics and Mathematics of National Research University Higher School of Economics (MIEM HSE), one of the most prestigious education institutions in Russia. The main goal of the workshop was to stress the importance of survivability aspects in the growing content-oriented networks and reliability of electron devices. Technical networks exhibit many interdependencies that are to be comprehensively measured and modeled. The network design leads typically to multi-objective optimization problems involving an interplay between resilience, sustainability, and robustness. The current network design and evaluation methods are often unable to cope with these interdependencies. MWENT aimed at their better understanding and implementation. An increase in community interest in MWENT has been observed this year. A total amount of 200 regular submissions were reviewed by TPC members and external reviewers. As a result, we have 157 peer-reviewed manuscripts in the Proceedings. The accepted papers were organized into the following sessions: Fundamental Problems of Electronics, Network and Telecommunication, Technologies of Electronic Instrument Engineering, Information Security, Signal Processing, Satellite Communications, and Measurements. The technical program was enriched by a comprehensive overview of MIEM scientific programs. As a tradition of MWENT, in addition to the IEEE Xplore publication, participants were also provided with electronic proceedings. The next edition of our events, the 15th International Siberian Conference on Control and Communications (SIBCON) will be held in Kazan, Russia, on May 13-15, 2021. For more information, please follow the link https://kpfu.ru/sibcon2021.

A Novel Class of Super-Elliptical Vivaldi Antennas for Ultra-Wideband Applications

2020 · CHAPTER · en

A novel class of complex-shaped antipodal Vivaldi antennas with enhanced impedance matching characteristics and an equivalent fractional bandwidth (FBW) of 166.8% is proposed. The reported antenna geometry is designed using the super-ellipse equation and implemented using an inexpensive FR4 laminate having a size of 170.7 mm × 134 mm × 0.2 mm. The presented low-cost, easy-to-fabricate radiating structure yields typical total efficiency, realized gain, and front-to-back ratio of 68%, 8.2 dBi, and 21.1 dB, respectively, across the operational frequency range. A parameter study of key geometrical features of the antenna is detailed in order to provide useful design guidelines while getting a better insight into the relevant physical behavior. Finally, a prototype is realized and characterized. The numerical results collected by full-wave simulation of the antenna structure are found to be in good agreement with the experimental measurements taken on the physical demonstrator.