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检索条件"机构=Faculty of Control Systems and Robotics of ITMO University"

共 623 条记录，以下是31-40 订阅

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The Cutting Tool Technical State Forecasting During the Technological Production Preparation Stages

The Cutting Tool Technical State Forecasting During the Tech...

引用

2023 International Ural Conference on Electrical Power Engineering, UralCon 2023

作者： Basova, T.V. Andreev, Y.S. Itmo University Faculty of Control Systems and Robotics St. Petersburg Russia

ISBN: (纸本)9798350303391

This study deals with the addressing the issue of ensuring the operational condition of the technological system in terms of quality parameters for manufacturing products within the required timeframe by developing and implementing the method for forecasting the technical state of the cutting tool (CT). The paper highlights the importance of determining and forecasting the technical state of the CT for enterprises in the instrument-making and mechanical engineering industries. To address the research question, an operational control method for the CT, based on the multisensory data fusion obtained from technical diagnostic and control systems on a computer numerical control (CNC) machine, was proposed. The forecasting of the CT's technical state was performed using artificial intelligence (AI) methods. The proposed approach for obtaining input data for developing predictive models differs in their reliability due to minimizing erroneous results from individual technical diagnostic and control systems. © 2023 IEEE.

关键词： Cutting tools

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Parameter Estimation and Indirect Adaptive control of a Dynamically Positioned Surface Vessel 9

Parameter Estimation and Indirect Adaptive Control of a Dyna...

引用

9th International Conference on control, Decision and Information Technologies, CoDIT 2023

作者： Zhivitskii, Andrei Yu. Zakharov, Dmitrii N. Shabanov, Kirill A. Borisov, Oleg I. Shavetov, Sergei V. Golubev, Anton K. Pyrkin, Anton A. Itmo University Faculty of Control Systems and Robotics St. Petersburg Russia

ISBN: (纸本)9798350311402

In this article dynamically positioned surface vessel model is considered. To achieve precise performance of the vessel with unknown parameters two control problem was solved. First one is online parametric identification. The estimation of unknown parameters of the surface vessel model is obtained by methods, which are gradient descent method, extended Kalman filter and dynamic regressor extension and mixing (DREM). Second problem is the design of the adaptive control based on the collected results from estimators. For this purposes inverse dynamics control is considered. The convergence of the system is shown in the modeling section. DREM estimation method showed best results. © 2023 IEEE.

关键词： Gradient methods

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Robust Finite-Time Stabilization of Linear Descriptor systems 32

Robust Finite-Time Stabilization of Linear Descriptor System...

引用

32nd Mediterranean Conference on control and Automation, MED 2024

作者： Konovalov, Dmitry Kremlev, Artem Zimenko, Konstantin Dobriborsci, Dmitrii ITMO University Faculty of Control Systems and Robotics Russia Deggendorf Institute of Technology Technology Campus Cham Germany

ISBN: (纸本)9798350395440

The paper is devoted to the problem of robust finite-time control design for linear descriptor systems. The proposed homogeneity based control does not require system transformation to a canonical form and guarantee finite-time convergence in the presence of additive disturbances. The parameters tuning is based on the solution of linear matrix equations and inequalities. © 2024 IEEE.

关键词： Linear matrix inequalities

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Comparative Analysis of control systems for Propulsion in Remote-controlled Unmanned Underwater Vehicles 3

Comparative Analysis of Control Systems for Propulsion in Re...

引用

3rd IEEE International Conference on Problems of Informatics, Electronics and Radio Engineering, PIERE 2024

作者： Patrashevskii, Aleksandr Mamatov, Aleksandr Lukichev, Dmitry Poliakov, Nikolai Demidova, Galina Itmo University Faculty of Control System and Robotics Saint-Petersburg Russia

ISBN: (纸本)9798331516321

This paper evaluates three control systems for the propulsion of remote-controlled unmanned underwater vehicles utilizing direct current (DC) motors with propellers. Simulation models based on dynamic and static propeller parameters were used to compare closed-loop control systems with Proportional-Integral-Derivative (PID) and multi-loop controllers, alongside an open-loop control system based on static propeller characteristics. The results reveal that the multi-loop control system exhibits superior performance by effectively controlling transient processes and mitigating external disturbances on the motor shaft. In contrast, the traditional PID controller achieves near-zero velocity error but experiences longer response times and armature current oscillations during startup. The open-loop control system offers comparable performance to the multi-loop system with simpler implementation and similar startup current levels to the PID controller. The study concludes that the choice of control strategy should be based on operational conditions: an open-loop system is advisable for environments without significant propeller obstructions due to its simplicity, while the multi-loop control system with current saturation is recommended in settings with potential disturbances to minimize current levels and reduce failure risks. © 2024 IEEE.

关键词： Closed loop control systems

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A Spectral Mask - Based on Method for Applying into Generalized Sidelobe Canceller Beamformer 12th

A Spectral Mask - Based on Method for Applying into Gener...

引用

Proceedings of the12th International Conference on Information Technology and its Applications, CITA 2023

作者： Huy, Nguyen Ba Anh, Pham Tuan The, Quan Trong Faculty of Control Systems and Robotics University ITMO St.Petersburg Russia Faculty of Software Engineering and Computer Systems University ITMO St.Petersburg Russia

ISBN: (纸本)9783031368851

The problem of signal processing is extracting the desired target speaker while suppressing the annoying background noise in complex recording situation, where exists third-party talker, transport vehicle or interference, noise. Speech quality or speech intelligibility are the major characteristics, which confirm the effectiveness of processed method. In speech applications, such as hearing-aids, hands-free telephony, teleconferencing, acoustic instruments, microphone array (MA) is applied for increasing the speech quality. MA uses the spatial response, the priori information about direction - of - arrival (DOA) of interest signal, the properties of recording environment to obtain speech components and remove noise. Generalized Sidelobe Canceller (GSC) is one of the most widely exploited in microphone array beamforming, due to its convenience and effective noise reduction. However, in several situations, the performance of GSC beamformer is often degraded, because of the imprecise DOA. In this paper, the authors suggested an additive spectral mask for improving the evaluation of GSC beamformer. The resulting experiment proves the received advantage of the author’s proposed algorithm to increase in the term of the signal-to-noise ratio (SNR). © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Signal to noise ratio

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Method for Improvement of Biosignal Measurement Accuracy in the IoB System 27

Method for Improvement of Biosignal Measurement Accuracy in ...

引用

27th International Conference on Soft Computing and Measurements, SCM 2024

作者： Altay, Yeldos A. Uskenbayeva, Raisa K. Fedorov, Alexey V. Satbayev University Department of Robotics and Technical Means of Automation Almaty Kazakhstan Satbayev University Almaty Kazakhstan Itmo University Faculty of Control Systems and Robotics Saint-Petersburg Russia

ISBN: (纸本)9798350363708

This paper presents filtering methods for improvement of biosignal measurement accuracy - an ECG signal under the influence of electromagnetic interference, which has a significant impact on the operation of the IoB system. A single-frequency polynomial notch filter has been synthesized to filter this noise to improve the accuracy of ECG signal measurement. The results of the implementation of the synthesized notch filter demonstrated that the filter makes it possible to separate the informative component from the distorting noise and increase the accuracy of signal measurement during its implementation in comparison with wavelet filters. © 2024 IEEE.

关键词： Notch filters

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Adaptive Direct Compensation of External Disturbances for Mimo Linear systems

Adaptive Direct Compensation of External Disturbances for Mi...

引用

2023 International Russian Automation Conference, RusAutoCon 2023

作者： Van Huan, Bui Margun, Alexey A. Kremlev, Artem S. Itmo University Department of Control Systems and Robotics St. Petersburg Russia Itmo University Ipme Ras Department of Control Systems and Robotics St. Petersburg Russia

ISBN: (纸本)9798350345551

The paper proposes a new algorithm for compensating external disturbances for a class of multi-input multi-output (MIMO) linear systems. The solution of the problem is based on the use of the internal model principle and the extended error adaptation algorithm. It is assumed that the disturbance is the output of an autonomous linear generator with unknown parameters. At the first stage, a full-order unknown input observer (UIO) is synthesized to solve the problem of estimating the state vector of the plant. Then a new observer of external disturbance is formed on the basis of state vector estimates. At the last stage, based on the new observer's estimates, a system with an extended state vector is formed for that a controller providing compensation of disturbance is constructed. The performance of the obtained results is confirmed using computer simulation in MATLAB Simulink. © 2023 IEEE.

关键词： Linear systems

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Algorithm for Detecting Surface Defects in Hot-Rolled Sheet Metal for Technical Vision systems 8

Algorithm for Detecting Surface Defects in Hot-Rolled Sheet ...

引用

8th International Conference on Information, control, and Communication Technologies, ICCT 2024

作者： Konyashov, Vyacheslav V. Sergeev, Alexey S. Fedorov, Alexey V. Konyashova, Kseniya A. Kolganov, Oleg A. ITMO University Faculty of Control Systems and Robotics Saint Petersburg Russia Researcher Scientific and Technical Center 'Etalon' Saint Petersburg Russia

ISBN: (纸本)9798331517564

The work presents the results of developing an algorithm for detecting surface defects in hot-rolled metal sheets for technical vision systems implementing the method of optical (laser) triangulation. The detection algorithm is implemented for a technical vision system based on a vision camera and a linear laser source. The results of experimental modeling are provided to determine the parameters of the optical detection scheme that meets the technological requirements of metal production. The experimental validation results of the detection algorithm for determining the sizes and locations of volumetric and planar surface defects are shown © 2024 IEEE.

关键词： Triangulation

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Modern Approaches for Equipment's Technical State Prediction 7

Modern Approaches for Equipment's Technical State Prediction

引用

7th International Conference on Information, control, and Communication Technologies, ICCT 2023

作者： Bratchikov, Stepan Itmo University Department of Control Systems and Robotics Saint-Petersburg Russia

ISBN: (纸本)9798350340945

Any manufacturing process aims to become more efficient. There is a plenty ways to achieve this. One of those is industrial equipment technical state prediction. Some of the methods are considered. Also, inclusion of modern machine learning and digital twins techniques is reviewed. As a result, the method of describing a production process as set of separate operations characterized by the parameters of the equipment involved in order to predict the output quality of produced items is introduced. © 2023 IEEE.

关键词： Forecasting

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Detecting and Classifying Surface Defects in Rolled Steel Sheets Using Deep Learning Techniques 9

Detecting and Classifying Surface Defects in Rolled Steel Sh...

引用

9th International Conference on control, Decision and Information Technologies, CoDIT 2023

作者： Evstafev, Oleg Shavetov, Sergei Pyrkin, Anton Itmo University Faculty of Control Systems and Robotics Kronverksky av. 49 Saint Petersburg197101 Russia

ISBN: (纸本)9798350311402

The paper focuses on using Deep Learning (DL) and Computer Vision (CV) techniques to detect surface defects in rolled metal products. By utilizing a Convolutional Neural Network (CNN), various surface defects can be detected and recognized, ultimately improving production standards and certification of the metal products. Two types of lighting, diffuse and side, are used to improve defect detection, and image preprocessing methods are employed to enhance the quality of the input data. The purpose of this work is to develop a method for recognizing and classifying defects in metal surfaces from their images in real time. © 2023 IEEE.

关键词： Surface defects

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