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Research of a Filter on Switchable Capacitors with Three-Phase control of Electronic Keys

Research of a Filter on Switchable Capacitors with Three-Pha...

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Wave Electronics and its Application in Information and Telecommunication systems (WECONF)

作者： Darya Denisenko Alexey Titov Nikolay Butyrlagin Alexey Zhuk dept. of Scientific Research Don State Technical University Rostov-on-Don Russia dept. of Automatic Control Systems Southern Federal University Rostov-on-Don Russia dept. of Information Systems and Radio Engineering Don State Technical University Rostov-on-Don Russia

ISBN: (数字)9798350364989

ISBN: (纸本)9798350364996

A low frequencies filter of the second order on switched capacitors has been developed and studied, the distinctive feature of which is three-phase control of three electronic keys. In the proposed circuit, this allows, at constant parameters of the frequency-setting capacitors and a fixed switching frequency of electronic keys, to control the frequency of the filter pole by changing the ratio of the resistances of resistors in the general feedback circuit. The basic equations for the filter transmission coefficients at zero frequency and at the pole frequency are given, as well as formulas for calculating the pole frequency and pole attenuation at the second order. A simulation of the filter was made in the Micro-Cap environment, which shows that the considered circuit solution performs the functions of a low-pass filter. Considered filter on switched capacitors can be used to create new adaptive measuring systems and analog-digital signal processing devices.

关键词： Resistors Switching frequency Capacitors Low-pass filters Switches control systems Information filters

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High-Speed Operational Amplifier Based On Complementary “Folded” Cascodes

High-Speed Operational Amplifier Based On Complementary “Fo...

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Informatics, Electronics, and Radio engineering (PIERE), International Conference Problems of

作者： Dmitry V. Kuznetsov Dmitriy V. Kleimenkin Nikolay N. Prokopenko Alexey E. Titov dept. of Scientific Research dept. of Information Systems and Radio Engineering Don State Technical University Rostov-na-Donu Russia dept. of Information Systems and Radio Engineering Don State Technical University Rostov-na-Donu Russia dept. of Automatic Control Systems Southern Federal University Rostov-na-Donu Russia

ISBN: (数字)9798331516321

ISBN: (纸本)9798331516338

A significant disadvantage of classical operational amplifiers with a complementary “folded” cascode is that in the dynamic overload mode of the input differential stage, the maximum output current of the “folded” cascode is tightly coupled to the currents of the current-stabilizing bipoles that establish its static mode. This prevents (under the static current consumption limitations of the operational amplifier) a fast recharge of the integrating correction capacitor, which limits the maximum slew rate of the output voltage. The paper discusses new circuit solutions of CBJT operational amplifier based on complementary “folded” cascodes and input differential stage of dual-input stage subclass to increase slew rate from 215 V/µs to 8000 V/µs level. The problem solved here is to provide higher levels of “folded” cascode output current during the transient edge. This effect is achieved by introducing three additional small capacitance correction capacitors into the circuit. It is possible to introduce a special current limiting resistor in series with the third additional capacitor to reduce overshoot during the transient edge. The proposed modifications of operational amplifier have significant advantages in comparison with the classical ones based on complementary “folded” cascodes in terms of slew rate level. Results of computer modeling of the operational amplifier in LTSpice environment for silicon CBJT technological process with micron topological norms are presented.

关键词： Operational amplifiers Resistors Micrometers Limiting Capacitors Voltage Silicon Transient analysis Standards Switching circuits

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Planning strategy based on visibility graph and traveling salesman problem with time window constraints

Planning strategy based on visibility graph and traveling sa...

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International Conference on system Theory, control, and Computing (ICSTCC)

作者： Mihaela-Alexandra Barb-Ciorbea Marius Kloetzer Cristian Mahulea Dept. of Automatic Control and Applied Informatics "Gheorghe Asachi" Technical University of Iasi Romania Aragón Institute of Engineering Research (I3A) University of Zaragoza Spain

ISBN: (数字)9798350364293

ISBN: (纸本)9798350364309

This paper addresses the problem of planning the motion of a mobile robot that has to visit some points of interest, each point having a specific time interval in which it can be reached. The robot is omnidirectional and it evolves with constant speed in an environment cluttered with polygonal obstacles. In the case of no obstacles, the problem would be a Travelling Salesman Problem with Time Window (TSPTW) constraints. Our solution is innovative by enabling obstacles for TSPTW scenarios, and it accomplishes this by coupling visibility graphs, graph reduction and mathematical programming. The method first constructs a visibility graph based on the obstacles and points to be visited, and then it maps this graph to another graph whose nodes correspond only to robot’s initial position and points of interest. Finally, a TSPTW problem is solved on the reduced graph by using a Mixed Integer Linear Programming (MILP) mathematical formulation, and the solution is projected to the initial environment. The solution development is accompanied by illustrative numerical simulations.

关键词： Computational modeling Traveling salesman problems Numerical simulation Trajectory Planning Mixed integer linear programming Time factors Mobile robots Collision avoidance Optimization

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A Probabilistic Topology Inference Method for Networked Dynamical system via Single Excitation

A Probabilistic Topology Inference Method for Networked Dyna...

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IEEE Conference on Decision and control

作者： Qing Jiao Yushan Li Jianping He Dept. of Automation Key Laboratory of System Control and Information Processing Ministry of Education of China and Shanghai Engineering Research Center of Intelligent Control and Management Shanghai Jiao Tong University Shanghai China

ISBN: (数字)9798350316339

ISBN: (纸本)9798350316346

A growing number of works have investigated inferring the topology of networked dynamical systems from observations, such as to better understand the system behaviour. Despite the tremendous advances, most of them require the observations to be abundant. This paper focuses on inferring the topology by injecting single excitation on a node and collecting several steps of noisy observations. The problem is challenging because the noises cannot be depressed in several observations and are mixed with the injected excitation, making it hard to directly reveal the topology. To practice, we develop a probabilistic method based on the hypothesis test framework. First, we infer the neighbors that are within h-hop of the excited node and derive the accuracy guarantees. Then, we extend the method to infer the exact h-hop neighbors. A computable lower bound for the accuracy probability is established to provide confidence support in the inference procedures. Furthermore, we give the conditions of excitation input to ensure a desired inference probability, which provides guidance for the input design. Numerical simulations are conducted to verify the effectiveness of the proposed method.

关键词： Lower bound Accuracy Network topology Noise Probabilistic logic Numerical simulation Topology Noise measurement Reliability Dynamical systems

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Design of Output and Impacts control systems

Design of Output and Impacts Control Systems

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International Russian Automation Conference (RusAutoCon)

作者： Anatoly Gaiduk Nikolay Prokopenko Vladislav Chumakov Dept. of Automatic Control Systems Scientific Design Office Robotics and Control Systems Taganrog Southern Federal University Rostov-on-Don Russia Dept. of Scientific Research Dept. of Information Systems and Radio Engineering Don State Technical University Rostov-on-Don Russia

To design linear control systems a new method is suggested on the basis of the principle of output and impacts control. The main difference of this principle consists in the use of only measurable variables and separate operators for each input signal of the control device. The design problem has a solution if the plant is completely controllable, and at least the controllable variable is measured. The suggested approach makes it possible to eliminate the well-known contradiction between the accuracy and stability of systems with control on deviation, and to provide the required astatism orders or selective invariance to the external actions. At the same time, the conditions of ensuring the direct indicators of the transient quality and the physical implementation of the control device are taken into account. The coefficients of the equation of the output and impacts control device are determined by solving a system of linear algebraic equations. The control device can be implemented on the basis of either operational amplifiers or sufficiently high-speed digital automation tools. The suggested method can be applied for designing high-quality linear control systems for various purposes.

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Using NLP to analyze requirements for Agriculture 4.0 applications

Using NLP to analyze requirements for Agriculture 4.0 applic...

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International Carpathian control Conference (ICCC)

作者： Jakub Jura Pavel Trnka Matous Cejnek Dept. of Automatic Control and Engineering Informatics Czech Technical University in Prague Prague Czech Republic

This contribution describes the use of Natural Language Processing (NLP) methods for the lexical analysis of requirements for control, sensors, and information systems in the Agriculture 4.0 domain. The analysis is presented on an orchard 4.0 *** proposed orchard includes a sensor network (containing mainly measurements of hydrometeorological and soil variables), camera monitoring of conditions, and yield, support for autonomous robotic care and harvesting based on machine vision, prediction of appropriate times for interventions, etc. Requirements specification for mentioned system is written in natural language.A sentence splitting, Tokenization, Lemmatization, and POS (Part-of-Speech) tagging methods are applied to the mentioned structured requirements of the system and Use Case description. From these and by means of NLP, the candidates of classes, attributes, operations, and associations of the UML (Unified Modeling Language) class diagram are filtered and the UML model is synthesized. This paper presents the application of software engineering methods to support the development of complex heterogeneous sensors, information, and control systems.

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control of Deterministic Chaotic Modes in Power systems

Control of Deterministic Chaotic Modes in Power Systems

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Smart Information systems and Technologies (SIST), IEEE International Conference on

作者： Mamyrbek Beisenbi Ainur Satpayeva Shugla Mussabayeva Gulnara Mussina Meruert Tlegen Dept. of System Analysis and Control L.N. Gumilyov Eurasian National University Astana Kazakhstan Dept. of Computer Engineering Astana IT University Astana Kazakhstan

The paper examines a new approach to controlling deterministic dynamical chaotic mode of power system with two electric generate-sources. A control law is synthesized in the class of one-parameter structurally stable mappings from catastrophe theory. Analytical calculations and a numerical experiment in MatLab showed that the proposed system excludes the generation of a deterministic chaotic mode for any changes in the uncertain system parameters. The study of the control system is carried out by the gradient-velocity method Lyapunov vector functions

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Method for Increasing the OpAmp’s Speed on the Basis of Complementary “Folded” Cascodes

Method for Increasing the OpAmp’s Speed on the Basis of Com...

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IEEE NW Russia Young Researchers in Electrical and Electronic engineering Conference (EIConRusNW)

作者： Dmitriy V. Kleimenkin Ilya V. Pakhomov Darya Y. Denisenko dept. of Scientific Research dept. of Information Systems and Radio Engineering Don State Technical University Rostov-on-Don Russia dept. of Scientific Research dept. of Instrumentation and Biomedical Engineering Don State Technical University Rostov-on-Don Russia dept. of Scientific Research Don State Technical University Rostov-on-Don Russia dept. of Automatic Control Systems Southern Federal University Rostov-on-Don Russia

The paper presents a promising method of increasing by more than an order of magnitude the maximum slew rate (SR) of integrated operational amplifiers (OpAmps) based on two-cycle “folded“ cascodes. This method is based on the introduction of special differentiating transient correction circuits into the classical circuits of OpAmps. Developed on the basis of the MH2XA031 array chip, the high-speed OpAmp is recommended for practical use in the subclass of so-called discrete-analog SC-filters on switched capacitors, for which (in some important cases) higher SR values are required. The effect of significantly improving the OpAmp’s speed is to provide higher output current levels of the two-cycle “folded” cascode that recharges the integrating correction capacitor during the transient edge. The OpAmp’s speed performance in the large-signal mode is increased from $248.7 \mathrm{~V} / \mu \mathrm{s}$ to $4148 \mathrm{~V} / \mu \mathrm{s}$ as a result of this.

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Automated Assessment of Medical Rehabilitation of Gait by Means of Video Processing in Cloud Environment

Automated Assessment of Medical Rehabilitation of Gait by Me...

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E-Health and Bioengineering Conference (EHB)

作者： Elena-Claudia Maftei Otilia Zvorişteanu Hariton-Nicolae Costin Silviu Bejinariu Florin Rotaru Vasile Manta Ramona Luca Dept. of Computer Science and Engineering Faculty of Automatic Control and Computer Engineering “Gheorghe Asachi” Technical University of Iaşi Institute of Computer Science Romanian Academy Iaşi Branch Iaşi Romania

ISBN: (数字)9798331532147

ISBN: (纸本)9798331532154

Human gait analysis provides qualitative and quantitative information concerning different characteristics of walking of a certain person. Cloud computing proves to be a modern and valuable technology when dealing with data scalability, security and efficiency of processing and storage. Also, this paradigm has some key-benefits like real-time data sharing, fast computation as well as collaborative research. The applications gamut which uses cloud computing is getting bigger and bigger, and healthcare sector is an important domain in this respect. Our approach proposed a cloud-based service designed for the automated assessment of medical rehabilitation of human gait by using video processing. We have chosen this processing technology because it is marker-less, allows fast computation and offers a very good precision of the gait analysis. Cloud computing approach proved to be encouraging and underscores remarkable advantages in comparison with traditional on-site video processing. In this way the patient, after a short training session, can himself/herself make tests and assessments of his/her mobility status, avoiding many consultations of medical or kineto-therapeutic staff.

关键词： Legged locomotion Training Cloud computing Scalability Medical services Gain measurement People with disabilities Real-time systems Security Personnel

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system Identification-informed Transparent and Explainable Machine Learning with Application to Power Consumption Forecasting

System Identification-informed Transparent and Explainable M...

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Electrical, Computer, Communications and Mechatronics engineering (ICECCME), International Conference on

作者： Hua-Liang Wei Dept. Automatic Control and Systems Engineering Energy Institute Centre of Machine Intelligence Centre for Signal Processing and Cpmplex Systems The University of Sheffield Sheffield UK

system identification (SysID) is the art and science of dealing with dynamic data modelling problems from systems science perspectives. It has been an active field and is still very active today, due to its wide range of applications, especially its basic principles of finding transparent, interpretable and parsimonious models for different purposes. The past decades have witnessed the explosive growth in machine learning (ML) and its applications in all areas of science and engineering. Meanwhile, there has been an increasing demand for the development of transparent, explainable and/or interpretable ML models. This paper proposes a new framework for developing system Identification-informed Transparent and Explainable MAchine Learning (SITEMAL) models. A case study, involving a real power consumption dataset, is presented to demonstrate the application of the proposed modelling framework and its performance for power consumption forecasting.

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