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An Efficient Medical Image Deep Fusion Model Based on Convolutional Neural Networks

Computers, Materials & Continua 2023年第2期74卷 2905-2925页

作者： Walid El-Shafai Noha A.El-Hag Ahmed Sedik Ghada Elbanby Fathi E.Abd El-Samie Naglaa F.Soliman Hussah Nasser AlEisa Mohammed E.Abdel Samea Department of Electronics and Electrical Communications Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt Security Engineering Laboratory Department of Computer SciencePrince Sultan UniversityRiyadh11586Saudi Arabia Higher Institute of Commercial Science Management Information SystemsEl-Mahala El-KobraEgypt Department of the Robotics and Intelligent Machines Faculty of Artificial IntelligenceKafrelsheikh UniversityKafr El-SheikhEgypt Department of Industrial Electronics and Control Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt Department of Information Technology College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadhSaudi Arabia Medical Imaging and Interventional Radiology National Liver InstituteMenoufia UniversityEgypt

Medical image fusion is considered the best method for obtaining one image with rich details for efficient medical diagnosis and *** learning provides a high performance for several medical image analysis *** paper proposes a deep learning model for the medical image fusion *** model depends on Convolutional Neural Network(CNN).The basic idea of the proposed model is to extract features from both CT and MR ***,an additional process is executed on the extracted *** that,the fused feature map is reconstructed to obtain the resulting fused ***,the quality of the resulting fused image is enhanced by various enhancement techniques such as Histogram Matching(HM),Histogram Equalization(HE),fuzzy technique,fuzzy type,and Contrast Limited Histogram Equalization(CLAHE).The performance of the proposed fusion-based CNN model is measured by various metrics of the fusion and enhancement *** realistic datasets of different modalities and diseases are tested and ***,real datasets are tested in the simulation analysis.

关键词： Image fusion CNN deep learning feature extraction evaluation metrics medical diagnosis

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Modeling and Analysis of Bipedal Wheel-legged Robot with Sprawling Legs Mechanism

Modeling and Analysis of Bipedal Wheel-legged Robot with Spr...

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International Conference on Mechatronics (ICOM)

作者： Zulkifli Mansor Addie Irawan Nor Maniha Abdul Ghani Azrul Azim Abdullah Hashim Robotics Intelligent Systems & Control Engineering (RiSC) research group Faculty of Electrical & Electronics Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Pekan Pahang Malaysia

ISBN: (数字)9798350349788

ISBN: (纸本)9798350349795

This paper presents the modeling and analysis of the novel Bipedal Wheel-Legged Robot with Sprawling Legs Mechanism (BWLS) utilizing multi body dynamics approaches and the proposed Coxa-Based Coordinate System (CCS) in kinematics modeling. The primary focus lies in transitioning the conceptual model of the BWLS into the Simscape Multibody (SM) environment. The proposed CCS is subjected to verification through the implementation of a Hierarchical control Framework (HCF) utilizing a simple stand-up input trajectory. Through the analysis, initial angular positions and stable range angular joints are determined, revising previous determinations based on hardware structure. Furthermore, employing the Forward Kinematics (FK) model, the stable boundary is identified through spatial leg motion plots. The reliability of the proposed CCS kinematics model is affirmed, rendering the model ready for further in-depth studies and applications.

关键词： Legged locomotion Analytical models Mechatronics Robot kinematics Dynamics Kinematics Rendering (computer graphics)

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Coxa Coordination System-Based Hierarchical control Framework for Bipedal Wheel-Leg Robot with Sprawling Mechanism

Coxa Coordination System-Based Hierarchical Control Framewor...

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IEEE Conference on Systems, Process & control (ICSPC)

作者： Zulkifli Mansor Addie Irawan Robotics Intelligent Systems & Control Engineering (RiSC) research group Faculty of Electrical & Electronics Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Pekan Pahang Malaysia

ISBN: (数字)9798350391398

ISBN: (纸本)9798350391404

The paper presents a Coxa Coordination System-Based Hierarchical control Framework (CCS-HCF) for a Bipedal Wheel-Leg Robot with a Sprawling Mechanism (BWLS), aimed at enhancing the flexibility navigation in rugged environments. The proposed method leverages the Coxa-Based Coordinate System (CCS) for optimizing leg motion and trajectory, facilitating stable and efficient locomotion across challenging terrains. The proposed method’s effectiveness is verified through various simulation works, highlighting the importance of specific parameter settings in the proposed CCSHCF, such as a Coxa angle for sprawling and mammalian postures, along with a swing height position. These configurations are crucial for maintaining stability and balance during operation. The findings demonstrate the bipedal wheel-legged robot such as BWLS system’s with the proposed CC-SHCF ready to be integrated by various stability and robust control layers for stable walking and skiing.

关键词： Legged locomotion Robust control Meters Navigation Robot kinematics Heuristic algorithms control systems Stability analysis Trajectory Optimization

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Simulation of Wind Turbine Vibrations

Simulation of Wind Turbine Vibrations

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International Workshop on Electric Drives: Optimization in control of Electric Drives (IWED)

作者： Ekaterina Andriushchenko Ants Kallaste Toomas Vaimann Anton Rassõlkin Hamidreza Heidari Galina L. Demidova Department of Electrical Power Engineering and Mechatronics Tallinn University of Technology Tallinn Estonia Faculty of Control Systems and Robotics ITMO University St. Petersburg Russia

ISBN: (数字)9781728141589

ISBN: (纸本)9781728141596

In recent years, there has been an increasing interest in renewable energy. Particularly, wind energy is gaining more and more popularity in many countries. However, the main obstacles to wind turbines usage are the vibration and noise close to wind farms. Therefore, this paper is focused on developing a new method for mathematical simulation of vibrations of a wind turbine in order to find out and reduce the vibration level. Particularly, low-frequency vibration of a wind turbine, composed of a tower and rotor in the out-of-balance condition is considered. The proposed method of vibration simulation is based on the theory of elastic beams and the general vibration theory. The calculations are made for a wind turbine VTR 50 Arctic. The results of the calculations are the displacement of the tower top and the stress at the tower foundation. Furthermore, it is worth emphasizing that the method is quite flexible. It allows adding complexity into the system, for instance, external loads such as wind pressure, aerodynamic loads, seismic loads or operational loads.

关键词： Wind turbines Poles and towers Vibrations Rotors Mathematical model Stress Blades

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Possibilities of Changing the Transport Characteristics of the TEP70 Locomotive

Possibilities of Changing the Transport Characteristics of t...

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International Workshop on Electric Drives: Optimization in control of Electric Drives (IWED)

作者： Viktor Rjabtšikov Anton Rassõlkin Toomas Vaimann Ants Kallaste Dmitry V. Lukichev Department of Electrical Power Engineering and Mechatronics Tallinn University of Technology Tallinn Estonia Faculty of Control Systems and Robotics ITMO University St. Petersburg Russia

ISBN: (数字)9781728141589

ISBN: (纸本)9781728141596

The research concentrates on the modernization issues of diesel-electric passenger locomotives TEP70. There is number of TEP70 locomotives in Baltic region that are used very rarely by their direct application but may as well be usable as freight locomotives. The main goal of the study is to change the tractive force of a TEP70 locomotive to be able to transport cargo in the Baltic region. Analysis of TEP70 working principles and load characteristics are presented. Based on the analytical model of locomotive, suggestion to replace the gearbox to increase locomotive pulling capability is proposed. Moreover, the paper presents calculation of the traction effort of TEP70. That kind of calculations are very important for motion planning and it should be done in order to avoid overloading during the working mode of the locomotive.

关键词： Force Traction motors Generators Gears Roads Windings Resistance

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Comparison of Synchronous Reluctance Machine and Permanent Magnet-Assisted Synchronous Reluctance Machine Performance Characteristics

Comparison of Synchronous Reluctance Machine and Permanent M...

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International Workshop on Electric Drives: Optimization in control of Electric Drives (IWED)

作者： Hamidreza Heidari Ekaterina Andriushchenko Anton Rassõlkin Ants Kallaste Toomas Vaimann Galina L. Demidova Department of Electrical Power Engineering and Mechatronics Tallinn University of Technology Tallinn Estonia Faculty of Control Systems and Robotics ITMO University St. Petersburg Russia

ISBN: (数字)9781728141589

ISBN: (纸本)9781728141596

Since the dominant induction machines and permanent magnet synchronous machines are well-established in the industry, the reluctance machines require more research work and investigation to substitute the conventional technologies. This paper analyzes the synchronous reluctance machines and permanent magnet-assisted synchronous reluctance machines in terms of the effect of permanent magnets in the model and the performance characteristic of the machines. The machines are designed and the parameters are measured. The vector diagrams of the machines and the equivalent circuits of the machines are analyzed. A comparison of the machines in terms of power factor, efficiency, and torque of the machines is provided based on the measurements. The study presents a notable improvement in power factor and efficiency in the case of inserting permanent magnets in the synchronous reluctance machine's rotor.

关键词： Rotors Torque Reactive power electrical resistance measurement Magnetic flux Reluctance machines Stators

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Efficient dense frontier detection for 2D graph SLAM based on occupancy grid submaps

arXiv

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arXiv 2019年

作者： Oršulić, Juraj Miklić, Damjan Kovačić, Zdenko Faculty of Electrical Engineering and Computing Laboratory for Robotics and Intelligent Control Systems University of Zagreb Croatia RoMb Technologies d.o.o. Zagreb Croatia

In autonomous robot exploration, the frontier is the border in the world map dividing the explored and unexplored space. The frontier plays an important role when deciding where in the environment the robots should go explore next. We consider a modular control system pipeline for autonomous exploration where a 2D graph SLAM algorithm based on occupancy grid submaps performs map building and localization, and frontier detection is one of key system components. We provide an overview of the state of the art in frontier detection and the relevant SLAM concepts and propose a fast specialized frontier detection method which is efficiently constrained to active submaps, yet robust to graph SLAM loop closures. Copyright © 2019, The Authors. All rights reserved.

关键词： Computer vision

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Light-weight mobile robot for hydrodynamic treatment of concrete and metal surfaces

Light-weight mobile robot for hydrodynamic treatment of conc...

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International Conference on Applied robotics for the Power Industry (CARPI)

作者： Zdenko Kovacic Borislav Balac Stjepan Flegaric Kristijan Brkic Matko Orsag LARICS Laboratory for Robotics and Intelligent Control Systems Faculty of electrical Engineering and Computing University of Zagreb Zagreb Croatia Inteco d o o Zagreb Croatia

The paper presents a modular design of a lightweight mobile robot for hydrodynamic treatment of concrete and metal surfaces. The robot is composed of three fully separable modules: an under-carriage with two tracks, an electric cabinet containing power electronics, communication and control, and a robot arm with various water jet tools. Modularity and smaller robot weight allows easy transportation, operation in ordinary construction conditions and maneuvering in very confined spaces. The on-board PLC controls the following robot axes: two robot tracks, a beam, a rotor tool, lance swing and pitch angles, and tool-to-surface distance deviation. Ultrasound sensors mounted on the robot allow automatic adjustment of a tool towards a treated surface. Experimental results obtained in real exploitation conditions (during a bridge repair) have confirmed all advantages of the described robot design.

关键词： Power industry Service robots Conferences

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Main Faults and Diagnostic Possibilities of BLDC Motors

Main Faults and Diagnostic Possibilities of BLDC Motors

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International Workshop on Electric Drives: Optimization in control of Electric Drives (IWED)

作者： Karolina Kudelina Bilal Asad Toomas Vaimann Anton Rassõlkin Ants Kallaste Dmitri V. Lukichev Department of Electrical Power Engineering and Mechatronics Tallinn University of Technology Tallinn Estonia Faculty of Control Systems and Robotics ITMO University St. Petersburg Russia

ISBN: (数字)9781728141589

ISBN: (纸本)9781728141596

This paper presents the main faults of brushless DC motors and their diagnostic possibilities. Due to the popularity gain of such devices in the past decade, the maintenance and diagnostic of such machines is getting more important. As the machines are used in various applications, they are often critical parts of devices. Due to this, the unexpected failures of such machines are undesired and are to be avoided. The main faults of the machines are listed, some possibilities of their monitoring and diagnostics have been addressed. The necessity of further study has been pointed out.

关键词： Permanent magnet motors Induction motors Reluctance motors Brushless DC motors

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Modem Mechatronics and robotics Education Program: Border Cooperation between Estonia and Russia

Modem Mechatronics and Robotics Education Program: Border Co...

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IEEE Education engineering (EDUCON)

作者： Anton Rassõlkin Toomas Vaimann Karolina Kudelina Galina L. Demidova Dmitry V. Lukichev Svetlana Yu.Perepelkina Department of Electrical Power Engineering and Mechatronics Tallinn University of Technology Tallinn Estonia Faculty of Control Systems and Robotics ITMO University St. Petersburg Russia

ISBN: (数字)9781728109305

ISBN: (纸本)9781728109312

The paper describes the interaction between Tallinn University of Technology (TalTech, Tallinn, Estonia) and ITMO University (St. Petersburg, Russia) based on recently signed agreement. The purpose of the agreement is to record the intention of TalTech and ITMO University to cooperate on implementing a double master's degree program, which involves confirmation of the master's educational level absorption and the award of master's degree and obtention of two diplomas, and to outline the organizational form, principles and terms of the implementation. The double degree Program is a two-year Master's program of 120 ECTS credit points. Its structure and content meets the requirements that both TalTech and ITMO University have established for their master's programs, in accordance with the government standards. Development and approval of the double degree Program is held by the Parties in accordance with the procedures established by them. This paper describes the procedure of implementation of a double-degree master program in mechatronics engineering.

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