Pub Date : 2018-05-01DOI: 10.1109/IIPHDW.2018.8388240
W. Szoka, S. Banaszak
Reliable work of transformers in the power system affects the efficiency of power supplies to consumers. Each transformer should be subjected to periodic diagnostic tests in order to detect damage or prevent the development of defects, which may lead to excluding unit from operation. One of the diagnostic methods of a transformer's active part is Frequency Response Analysis (FRA). Tests carried out using frequency response analysis give a wide range of information about the transformer's technical condition, but the interpretation of the results is very difficult and requires a lot of experience. To facilitate and automate the analysis of measurement results, various types of algorithms for assessment of the transformer's technical condition are developed. The paper presents a comparison of the most frequently used formulas in FRA method, based on data recorded on a test transformer in laboratory conditions using two measuring setups.
{"title":"Evaluation methods of frequency response analysis","authors":"W. Szoka, S. Banaszak","doi":"10.1109/IIPHDW.2018.8388240","DOIUrl":"https://doi.org/10.1109/IIPHDW.2018.8388240","url":null,"abstract":"Reliable work of transformers in the power system affects the efficiency of power supplies to consumers. Each transformer should be subjected to periodic diagnostic tests in order to detect damage or prevent the development of defects, which may lead to excluding unit from operation. One of the diagnostic methods of a transformer's active part is Frequency Response Analysis (FRA). Tests carried out using frequency response analysis give a wide range of information about the transformer's technical condition, but the interpretation of the results is very difficult and requires a lot of experience. To facilitate and automate the analysis of measurement results, various types of algorithms for assessment of the transformer's technical condition are developed. The paper presents a comparison of the most frequently used formulas in FRA method, based on data recorded on a test transformer in laboratory conditions using two measuring setups.","PeriodicalId":405270,"journal":{"name":"2018 International Interdisciplinary PhD Workshop (IIPhDW)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126169284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-05-01DOI: 10.1109/IIPHDW.2018.8388361
Andrzej Seul
One of commonly used methods for scanning the work area around mobile robot is to use machine vision. This paper's focus is on extracting features from monochrome natural textures for the purpose of texture classification using extended Gray Level Coincidence Matrix (GLCM) approach. Main idea of this approach is to slice original image into smaller parts, calculate four well-known Haralick's Features for each part separately and then use one of commonly used statistical measures to obtain series of features for task of classification. Simulations using texture base derived from popular Amsterdam Library of Textures (ALOT) database were performed. Evaluation of classification performance with this extended method for different number of slices was performed using Re-substitution Loss, F-measure and Cross-validation loss of calculated classifiers as quality criteria. In general, obtained results show that it is possible to improve classification quality by introducing this extended approach.
{"title":"Monochromatic textures' features extraction using extended GLCM approach for classification of autonomous cleaning robot work area","authors":"Andrzej Seul","doi":"10.1109/IIPHDW.2018.8388361","DOIUrl":"https://doi.org/10.1109/IIPHDW.2018.8388361","url":null,"abstract":"One of commonly used methods for scanning the work area around mobile robot is to use machine vision. This paper's focus is on extracting features from monochrome natural textures for the purpose of texture classification using extended Gray Level Coincidence Matrix (GLCM) approach. Main idea of this approach is to slice original image into smaller parts, calculate four well-known Haralick's Features for each part separately and then use one of commonly used statistical measures to obtain series of features for task of classification. Simulations using texture base derived from popular Amsterdam Library of Textures (ALOT) database were performed. Evaluation of classification performance with this extended method for different number of slices was performed using Re-substitution Loss, F-measure and Cross-validation loss of calculated classifiers as quality criteria. In general, obtained results show that it is possible to improve classification quality by introducing this extended approach.","PeriodicalId":405270,"journal":{"name":"2018 International Interdisciplinary PhD Workshop (IIPhDW)","volume":"2021 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133941385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-05-01DOI: 10.1109/IIPHDW.2018.8388376
Grzegorz Nowakowski
This article presents various forms of fuzzy queries, a detailed analysis of these queries and their conversion into standard SQL queries by means of Oracle 11g XE. A qualitative and quantitative study about the use of fuzzy queries on relational databases has been included in this article, as well. Given that fuzzy queries arrange results according to the degree in which they meet the conditions of the query, it is easier to analyze the results and the risk of obtaining an empty result is reduced thanks to an extended interpretation of the conditions of the query. The provided examples of conversion of fuzzy queries into standard SQL queries by means of Oracle 11g XE point to easy to implement methods of obtaining fuzzy information from the database, and thereby expand its functionality.
{"title":"Fuzzy queries on relational databases","authors":"Grzegorz Nowakowski","doi":"10.1109/IIPHDW.2018.8388376","DOIUrl":"https://doi.org/10.1109/IIPHDW.2018.8388376","url":null,"abstract":"This article presents various forms of fuzzy queries, a detailed analysis of these queries and their conversion into standard SQL queries by means of Oracle 11g XE. A qualitative and quantitative study about the use of fuzzy queries on relational databases has been included in this article, as well. Given that fuzzy queries arrange results according to the degree in which they meet the conditions of the query, it is easier to analyze the results and the risk of obtaining an empty result is reduced thanks to an extended interpretation of the conditions of the query. The provided examples of conversion of fuzzy queries into standard SQL queries by means of Oracle 11g XE point to easy to implement methods of obtaining fuzzy information from the database, and thereby expand its functionality.","PeriodicalId":405270,"journal":{"name":"2018 International Interdisciplinary PhD Workshop (IIPhDW)","volume":"21 3-4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134363924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-05-01DOI: 10.1109/IIPHDW.2018.8388374
Grzegorz Sypniewski, K. Okarma
The article presents a novel approach to the problem of arc seam tracking during the technological process of welding. A typical solution is using a laser sensor, which is very expensive and usually not ready to use just after removal from the box. Less commonly existing solutions are the applications of passive vision. In this technology an image is captured by a camera and then typically some gradient methods are used for finding the edges, usually after some additional preprocessing operations. The next phase can be the use of Hough transform for detection of straight lines. Unfortunately, due to the strong interference from the welding arc and the need of using some welding filters, the chance for proper recognition of the groove using gradient based methods is strongly limited. Therefore in the proposed approach the Monte Carlo method is used with some points randomly drawn. Then it is determined whether they meet the conditions set for the probable points on the path of welding which are always darker than the surroundings. Having drawn an adequate number of points the area of the welding groove and its position can be estimated with sufficient accuracy. The method presented in the paper has been designed for a specific application involving hard welding automation of long sections of butt joints.
{"title":"Probabilistic approach to seam tracking of butt welding","authors":"Grzegorz Sypniewski, K. Okarma","doi":"10.1109/IIPHDW.2018.8388374","DOIUrl":"https://doi.org/10.1109/IIPHDW.2018.8388374","url":null,"abstract":"The article presents a novel approach to the problem of arc seam tracking during the technological process of welding. A typical solution is using a laser sensor, which is very expensive and usually not ready to use just after removal from the box. Less commonly existing solutions are the applications of passive vision. In this technology an image is captured by a camera and then typically some gradient methods are used for finding the edges, usually after some additional preprocessing operations. The next phase can be the use of Hough transform for detection of straight lines. Unfortunately, due to the strong interference from the welding arc and the need of using some welding filters, the chance for proper recognition of the groove using gradient based methods is strongly limited. Therefore in the proposed approach the Monte Carlo method is used with some points randomly drawn. Then it is determined whether they meet the conditions set for the probable points on the path of welding which are always darker than the surroundings. Having drawn an adequate number of points the area of the welding groove and its position can be estimated with sufficient accuracy. The method presented in the paper has been designed for a specific application involving hard welding automation of long sections of butt joints.","PeriodicalId":405270,"journal":{"name":"2018 International Interdisciplinary PhD Workshop (IIPhDW)","volume":"9 35","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134413039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-05-01DOI: 10.1109/IIPHDW.2018.8388390
M. Majchrowicz, Paweł Kapusta, Damian Faustryjak, L. Jackowska-Strumillo
The word hacking very often evokes pejorative connotations. In IT to hack is to break security measures, that were introduced by the developer or the manufacturer. However to hack can also mean to make the application or device do more, that it was originally intended, to extend its capabilities. In this article we will show that by hacking (or rooting) a Samsung Smart TV it is possible to build a system that will allow remote management and monitoring of such device. Parental control is often very limited in functionality, usually just a PIN lock. By achieving arbitrary code execution we were able to extend the functionality drastically. This system is independent of manufacturer and can work and be extended even on older TV sets, that do not receive updates.
{"title":"System for remote parental control and management of rooted smart TVs","authors":"M. Majchrowicz, Paweł Kapusta, Damian Faustryjak, L. Jackowska-Strumillo","doi":"10.1109/IIPHDW.2018.8388390","DOIUrl":"https://doi.org/10.1109/IIPHDW.2018.8388390","url":null,"abstract":"The word hacking very often evokes pejorative connotations. In IT to hack is to break security measures, that were introduced by the developer or the manufacturer. However to hack can also mean to make the application or device do more, that it was originally intended, to extend its capabilities. In this article we will show that by hacking (or rooting) a Samsung Smart TV it is possible to build a system that will allow remote management and monitoring of such device. Parental control is often very limited in functionality, usually just a PIN lock. By achieving arbitrary code execution we were able to extend the functionality drastically. This system is independent of manufacturer and can work and be extended even on older TV sets, that do not receive updates.","PeriodicalId":405270,"journal":{"name":"2018 International Interdisciplinary PhD Workshop (IIPhDW)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115281704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-05-01DOI: 10.1109/IIPHDW.2018.8388402
Michał Zamojski
In the paper Fractional Order PID controller implementation is presented. Main idea of the paper is to prove that fractional order controllers can be easy implemented in PLC. Proposed controller was created for integer order plant which was heater with fan where only temperature could be controlled and air flow was constant. Fractional transfer functions were approximated as Recursive Oustaloup'e Filter and discretized with Tustin method. The majority of algorithms were created in MatLab/Simulink and could be easy converted into Structure Text language with PLC Coder toolbox. The last part of the paper includes experiment results and comparison with classical integer order PID controller.
{"title":"Implementation of fractional order PID controller based on recursive oustaloup'e filter","authors":"Michał Zamojski","doi":"10.1109/IIPHDW.2018.8388402","DOIUrl":"https://doi.org/10.1109/IIPHDW.2018.8388402","url":null,"abstract":"In the paper Fractional Order PID controller implementation is presented. Main idea of the paper is to prove that fractional order controllers can be easy implemented in PLC. Proposed controller was created for integer order plant which was heater with fan where only temperature could be controlled and air flow was constant. Fractional transfer functions were approximated as Recursive Oustaloup'e Filter and discretized with Tustin method. The majority of algorithms were created in MatLab/Simulink and could be easy converted into Structure Text language with PLC Coder toolbox. The last part of the paper includes experiment results and comparison with classical integer order PID controller.","PeriodicalId":405270,"journal":{"name":"2018 International Interdisciplinary PhD Workshop (IIPhDW)","volume":"133 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114100165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-05-01DOI: 10.1109/IIPHDW.2018.8388334
A. Mikołajczak, M. Wołowicz, Michalina Kurkus-Gruszecka, K. Badyda, P. Krawczyk
In the paper The Liquid Air Energy Storage (LAES) technology is described. The LAES can be constructed in every place, bases on well-known components and is dedicated for system scale and short-term energy storage. The most important issue is to increase the energy storage efficiency and its economic attractiveness. For that purpose the Organic Rankine Cycle application was proposed. The new variant of the Liquid Air Energy Storage with Organic Rankine Cycle (LAES-ORC) was developed, including technical analysis, the mathematical model implementation description, simulation results and its analysis.
{"title":"Improving the efficiency of Liquid Air Energy Storage by organic rankine cycle module application","authors":"A. Mikołajczak, M. Wołowicz, Michalina Kurkus-Gruszecka, K. Badyda, P. Krawczyk","doi":"10.1109/IIPHDW.2018.8388334","DOIUrl":"https://doi.org/10.1109/IIPHDW.2018.8388334","url":null,"abstract":"In the paper The Liquid Air Energy Storage (LAES) technology is described. The LAES can be constructed in every place, bases on well-known components and is dedicated for system scale and short-term energy storage. The most important issue is to increase the energy storage efficiency and its economic attractiveness. For that purpose the Organic Rankine Cycle application was proposed. The new variant of the Liquid Air Energy Storage with Organic Rankine Cycle (LAES-ORC) was developed, including technical analysis, the mathematical model implementation description, simulation results and its analysis.","PeriodicalId":405270,"journal":{"name":"2018 International Interdisciplinary PhD Workshop (IIPhDW)","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128803828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-05-01DOI: 10.1109/IIPHDW.2018.8388398
P. Frankowski
A reinforcement corrosion is a multi-billion problem around the world. The purpose of this paper is to presents basic research on possibilities of use eddy current method using absolute transducer for corrosion detection in reinforced concrete structures. Potential of the eddy current method is analyzed, measurement system presented and simple methods of detection are designed also selected results are presented to support conclusions.
{"title":"Corrosion detection and measurement using eddy current method","authors":"P. Frankowski","doi":"10.1109/IIPHDW.2018.8388398","DOIUrl":"https://doi.org/10.1109/IIPHDW.2018.8388398","url":null,"abstract":"A reinforcement corrosion is a multi-billion problem around the world. The purpose of this paper is to presents basic research on possibilities of use eddy current method using absolute transducer for corrosion detection in reinforced concrete structures. Potential of the eddy current method is analyzed, measurement system presented and simple methods of detection are designed also selected results are presented to support conclusions.","PeriodicalId":405270,"journal":{"name":"2018 International Interdisciplinary PhD Workshop (IIPhDW)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126373570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-05-01DOI: 10.1109/IIPHDW.2018.8388401
A. Kotyra
The paper presents a short review of diagnostics methods used for pulverized coal combustion and biomass co-combustion processes that utilize information obtained within the visible spectral range. The optical signals can be captured by a multichannel fiber-optic probe that is placed inside a combustion chamber or a borescope with a CMOS camera attached. Particular attention is paid to presenting methods of signal/image processing that could point to potentially undesired states of combustion (co-combustion) process as well as experiments obtained both in laboratory test stand and a power boiler.
{"title":"Application of optical signals for combustion process diagnosis","authors":"A. Kotyra","doi":"10.1109/IIPHDW.2018.8388401","DOIUrl":"https://doi.org/10.1109/IIPHDW.2018.8388401","url":null,"abstract":"The paper presents a short review of diagnostics methods used for pulverized coal combustion and biomass co-combustion processes that utilize information obtained within the visible spectral range. The optical signals can be captured by a multichannel fiber-optic probe that is placed inside a combustion chamber or a borescope with a CMOS camera attached. Particular attention is paid to presenting methods of signal/image processing that could point to potentially undesired states of combustion (co-combustion) process as well as experiments obtained both in laboratory test stand and a power boiler.","PeriodicalId":405270,"journal":{"name":"2018 International Interdisciplinary PhD Workshop (IIPhDW)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121968894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-05-01DOI: 10.1109/IIPHDW.2018.8388341
Maksymilian Szumowski, M. Ogonowski
Modern robotics aims to bring robots out of closed environments and place them in the environment where human being exists. Robots that will work with people in the future will be an increasingly common image not only in factories but also in our homes. This goal creates a challenge for engineers and scientists. This challenge is not only to develop safe and reliable mechanical design and control systems that will provide high quality of performed task but also to create safe systems for interacting with human being. One of the possible solution for it is to integrate into structure of robot so called elastic actuators instead of classic stiff actuators. Increasing popularity of elastic actuators results from the fact that those actuators have many positive attributes in relation to classic stiff actuators. Such features are: increased shock tolerance, easier positional control in the contact issues, easier force control (which can be directly reduced to a position control problem) or high back driveability (used in tele-manipulation process or programing by hand in robotic arms). In this paper we present a position control method for Variable Stiffness Elasticity Actuator. To achieve this goal, we modelled such actuator using discrete state-space approach, first. Parameters of model used in simulations were defined with use of prototype concept of this actuator. Control method utilizes a Model Predictive Control approach to calculate input to the DC motor. Using Model Predictive Control approach we optimize changes of control variable along prediction horizon. We also present a method on how to select stiffness of the system while taking into account maximum possible values of physical spring. In our paper we present simulation of three possible types of input: step function, smooth velocity step function and sinusoidal function. Obtained results of quality of regulation for MPC are compared to PID regulator.
{"title":"Model predictive control for variable stiffness elasticity actuator","authors":"Maksymilian Szumowski, M. Ogonowski","doi":"10.1109/IIPHDW.2018.8388341","DOIUrl":"https://doi.org/10.1109/IIPHDW.2018.8388341","url":null,"abstract":"Modern robotics aims to bring robots out of closed environments and place them in the environment where human being exists. Robots that will work with people in the future will be an increasingly common image not only in factories but also in our homes. This goal creates a challenge for engineers and scientists. This challenge is not only to develop safe and reliable mechanical design and control systems that will provide high quality of performed task but also to create safe systems for interacting with human being. One of the possible solution for it is to integrate into structure of robot so called elastic actuators instead of classic stiff actuators. Increasing popularity of elastic actuators results from the fact that those actuators have many positive attributes in relation to classic stiff actuators. Such features are: increased shock tolerance, easier positional control in the contact issues, easier force control (which can be directly reduced to a position control problem) or high back driveability (used in tele-manipulation process or programing by hand in robotic arms). In this paper we present a position control method for Variable Stiffness Elasticity Actuator. To achieve this goal, we modelled such actuator using discrete state-space approach, first. Parameters of model used in simulations were defined with use of prototype concept of this actuator. Control method utilizes a Model Predictive Control approach to calculate input to the DC motor. Using Model Predictive Control approach we optimize changes of control variable along prediction horizon. We also present a method on how to select stiffness of the system while taking into account maximum possible values of physical spring. In our paper we present simulation of three possible types of input: step function, smooth velocity step function and sinusoidal function. Obtained results of quality of regulation for MPC are compared to PID regulator.","PeriodicalId":405270,"journal":{"name":"2018 International Interdisciplinary PhD Workshop (IIPhDW)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126508145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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