Pub Date : 2021-12-10DOI: 10.1109/GC-ElecEng52322.2021.9788285
Faiza Hashim, K. Shuaib, F. Sallabi
In any blockchain network, a consensus algorithm is considered a major factor in determining the performance of the network. This study aims to investigate consensus algorithms in healthcare blockchains for electronic health record (EHR) sharing by analyzing the scalability performance of these algorithms. Several consensus algorithms have been proposed in the literature and have been used for various types of blockchain networks. Herein, we analyze the performance of proof of work, practical Byzantine fault tolerance, and proof of authority (PoA) algorithms in the healthcare domain and propose an improved real-time PoA consensus algorithm for EHR sharing for faster consensus and block generation. Results of performed simulations show that the proposed algorithm outperforms previous consensus algorithms in terms of consensus time, number of blocks generated, network throughput, and scalability.
{"title":"Performance Evaluation of Blockchain Consensus Algorithms for Electronic Health Record Sharing","authors":"Faiza Hashim, K. Shuaib, F. Sallabi","doi":"10.1109/GC-ElecEng52322.2021.9788285","DOIUrl":"https://doi.org/10.1109/GC-ElecEng52322.2021.9788285","url":null,"abstract":"In any blockchain network, a consensus algorithm is considered a major factor in determining the performance of the network. This study aims to investigate consensus algorithms in healthcare blockchains for electronic health record (EHR) sharing by analyzing the scalability performance of these algorithms. Several consensus algorithms have been proposed in the literature and have been used for various types of blockchain networks. Herein, we analyze the performance of proof of work, practical Byzantine fault tolerance, and proof of authority (PoA) algorithms in the healthcare domain and propose an improved real-time PoA consensus algorithm for EHR sharing for faster consensus and block generation. Results of performed simulations show that the proposed algorithm outperforms previous consensus algorithms in terms of consensus time, number of blocks generated, network throughput, and scalability.","PeriodicalId":344268,"journal":{"name":"2021 Global Congress on Electrical Engineering (GC-ElecEng)","volume":"33 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114018303","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 : 2021-12-10DOI: 10.1109/GC-ElecEng52322.2021.9788427
Zayd Khashshan, M. Zgoul
In this work, a monocular camera-based obstacle avoidance system was designed to improve autonomous operation of quadcopters, already hindered by sensors' heavyweight and processing and energy requirements. The work underwent two stages. First, the system dynamics were modeled, linearized, and controlled using proportional and derivative (PD) controllers. Then, an optic flow-based hybrid obstacle avoidance algorithm was developed. The algorithm consisted of three approaches that account for avoiding frontal and peripheral objects, while aiming to the final position. The developed system was tested in a challenging scenario that mimicked a real forest using Webots simulator. Results demonstrated an 85% success rate of avoiding obstacles. Cases of system failure resulted due to the linearization constraint which blocked ad hoc aggressive behaviour.
{"title":"Optic Flow-based Vision System for Autonomous and Collision-free Navigation of Micro Aerial Vehicles","authors":"Zayd Khashshan, M. Zgoul","doi":"10.1109/GC-ElecEng52322.2021.9788427","DOIUrl":"https://doi.org/10.1109/GC-ElecEng52322.2021.9788427","url":null,"abstract":"In this work, a monocular camera-based obstacle avoidance system was designed to improve autonomous operation of quadcopters, already hindered by sensors' heavyweight and processing and energy requirements. The work underwent two stages. First, the system dynamics were modeled, linearized, and controlled using proportional and derivative (PD) controllers. Then, an optic flow-based hybrid obstacle avoidance algorithm was developed. The algorithm consisted of three approaches that account for avoiding frontal and peripheral objects, while aiming to the final position. The developed system was tested in a challenging scenario that mimicked a real forest using Webots simulator. Results demonstrated an 85% success rate of avoiding obstacles. Cases of system failure resulted due to the linearization constraint which blocked ad hoc aggressive behaviour.","PeriodicalId":344268,"journal":{"name":"2021 Global Congress on Electrical Engineering (GC-ElecEng)","volume":"116 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130076730","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 : 2021-12-10DOI: 10.1109/GC-ElecEng52322.2021.9788194
Zaid A. Sabbah, Qusai W. Al-Makdadi, Mohammad H. Al-Juwhari, Saeed H. Issa, Yanal S. Faouri
This work describes an improved rectangular microstrip antenna that can produce numerous frequency narrow bands in both frequency and pattern reconfigurable modes of operation. Two PIN diodes are inserted in the slots created within the patch and the resulting parasitic elements to produce four cases based on the active diode(s). A slot is also created within each parasitic element for introducing different radiation patterns when the associated diode is active. The reported antenna can toggle between single band to dual, triple, and quad frequency bands for the four diodes combinations. Reflection coefficients and radiation patterns are mainly investigated to show the intended operation of the designed antenna.
{"title":"Dual Slot Multiband Microstrip Antenna for Pattern and Frequency Agility","authors":"Zaid A. Sabbah, Qusai W. Al-Makdadi, Mohammad H. Al-Juwhari, Saeed H. Issa, Yanal S. Faouri","doi":"10.1109/GC-ElecEng52322.2021.9788194","DOIUrl":"https://doi.org/10.1109/GC-ElecEng52322.2021.9788194","url":null,"abstract":"This work describes an improved rectangular microstrip antenna that can produce numerous frequency narrow bands in both frequency and pattern reconfigurable modes of operation. Two PIN diodes are inserted in the slots created within the patch and the resulting parasitic elements to produce four cases based on the active diode(s). A slot is also created within each parasitic element for introducing different radiation patterns when the associated diode is active. The reported antenna can toggle between single band to dual, triple, and quad frequency bands for the four diodes combinations. Reflection coefficients and radiation patterns are mainly investigated to show the intended operation of the designed antenna.","PeriodicalId":344268,"journal":{"name":"2021 Global Congress on Electrical Engineering (GC-ElecEng)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132833720","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 : 2021-12-10DOI: 10.1109/GC-ElecEng52322.2021.9788338
F. Salazar-Quinonez, R. Abd‐Alhameed, A. Cowley, D. Bladen
Radio Service Coverage Area of UHF Repeater systems is one of the most important performance's elements for shore to ship radio communications within industries around the world. Each implemented system is designed to fulfil their specific demands, which in this case is balancing coverage limitations and transmission power restrictions due petrochemical industry regulations. This paper presents an innovative Analogue UHF Repeater Extender System array design using commercial Radio Repeaters to overcome lack radio communications, improving performance by a minimum of 20dB on the received signal strength indicator (RSSI), on a real world outdoor to indoor and outdoor to outdoor scenarios for cargo operations. A 3D Shoot and Bounce Ray Tracing (SBR) Propagation Model, combining efforts of field strength distribution, time of arrival and propagation-channel environment, is presented to characterise the System's performance analysis. The work is focused on the extender's field measurements and the results comparison to a Wireless InSite 3D SBR simulation model.
超高频中继器系统的无线电服务覆盖面积是全球工业中岸对船无线电通信最重要的性能因素之一。每个实施的系统都是为了满足其特定需求而设计的，在这种情况下，由于石化行业法规的限制，需要平衡覆盖限制和传输功率限制。本文提出了一种创新的模拟UHF中继器扩展系统阵列设计，使用商用无线电中继器来克服无线电通信的不足，在真实世界的室外到室内和室外到室外的货物操作场景中，在接收信号强度指示器(RSSI)上提高至少20dB的性能。结合场强分布、到达时间和传播信道环境等因素，建立了三维发射和反射光线追踪(SBR)传播模型，对系统进行了性能分析。该工作的重点是扩展器的现场测量，并将结果与Wireless InSite 3D SBR仿真模型进行比较。
{"title":"UHF Radio Extender System for Ship to Shore Communications Using 3D SBR for Positioning","authors":"F. Salazar-Quinonez, R. Abd‐Alhameed, A. Cowley, D. Bladen","doi":"10.1109/GC-ElecEng52322.2021.9788338","DOIUrl":"https://doi.org/10.1109/GC-ElecEng52322.2021.9788338","url":null,"abstract":"Radio Service Coverage Area of UHF Repeater systems is one of the most important performance's elements for shore to ship radio communications within industries around the world. Each implemented system is designed to fulfil their specific demands, which in this case is balancing coverage limitations and transmission power restrictions due petrochemical industry regulations. This paper presents an innovative Analogue UHF Repeater Extender System array design using commercial Radio Repeaters to overcome lack radio communications, improving performance by a minimum of 20dB on the received signal strength indicator (RSSI), on a real world outdoor to indoor and outdoor to outdoor scenarios for cargo operations. A 3D Shoot and Bounce Ray Tracing (SBR) Propagation Model, combining efforts of field strength distribution, time of arrival and propagation-channel environment, is presented to characterise the System's performance analysis. The work is focused on the extender's field measurements and the results comparison to a Wireless InSite 3D SBR simulation model.","PeriodicalId":344268,"journal":{"name":"2021 Global Congress on Electrical Engineering (GC-ElecEng)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114747543","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 : 2021-12-10DOI: 10.1109/GC-ElecEng52322.2021.9788139
G. Dolecek
This paper presents a novel method to improve aliasing rejection and decrease complexity in the compensated sharpened cascaded-integrated-comb (CIC) decimation filters, considering that the overal decimation factor can be presented as a product of two integers. Two-stage decimation structure is proposed. In the first stage is a CIC filter decimated by the first decimation factor, while in the second stage is the sharpened CIC filter decimated by the second decimation factor. The complexity is expressed in terms of the numbers of adders per output samples (APOS). There is a trade-off between the increasing the aliasing rejection and the complexity decreasing, in the proposed structure. The compensator is designed using particle swarm optimization (PSO) and works at low rate i.e. after decimation. The sharpening polynomials are used from literature. The method is ilustrated with examples. The comparisons with the state of the art show the advantages of the proposed method.
{"title":"Improving Characteristics of Compensated Sharpened CIC Decimation Filters","authors":"G. Dolecek","doi":"10.1109/GC-ElecEng52322.2021.9788139","DOIUrl":"https://doi.org/10.1109/GC-ElecEng52322.2021.9788139","url":null,"abstract":"This paper presents a novel method to improve aliasing rejection and decrease complexity in the compensated sharpened cascaded-integrated-comb (CIC) decimation filters, considering that the overal decimation factor can be presented as a product of two integers. Two-stage decimation structure is proposed. In the first stage is a CIC filter decimated by the first decimation factor, while in the second stage is the sharpened CIC filter decimated by the second decimation factor. The complexity is expressed in terms of the numbers of adders per output samples (APOS). There is a trade-off between the increasing the aliasing rejection and the complexity decreasing, in the proposed structure. The compensator is designed using particle swarm optimization (PSO) and works at low rate i.e. after decimation. The sharpening polynomials are used from literature. The method is ilustrated with examples. The comparisons with the state of the art show the advantages of the proposed method.","PeriodicalId":344268,"journal":{"name":"2021 Global Congress on Electrical Engineering (GC-ElecEng)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127453564","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 : 2021-12-10DOI: 10.1109/GC-ElecEng52322.2021.9788252
Aron Kondoro, D. Rwegasira, I. Dhaou, H. Tenhunen
Recently, the traditional power grid has been evolving into a new type of intelligent system known as smart grid. The new smart grid uses information and communication technologies to automate and optimize the power generation and distribution process. Despite improvements, there are still challenges that cannot be solved using existing technologies. Blockchain is an emerging technology with unique features to solve some of remaining challenges in smart grids. In this paper, we review the recent developments in this area. We describe the existing smart grid challenges, explore blockchain features suitable for smart grids, and highlight notable existing successful implementations. The review shows several applications such as peer to peer energy trading and autonomous asset management that have been enabled by blockchain technology. It also highlights challenges such as performance and regulations that might hinder the future use of blockchains in smart grids.
{"title":"Trends of Using Blockchain Technology in the Smart Grid","authors":"Aron Kondoro, D. Rwegasira, I. Dhaou, H. Tenhunen","doi":"10.1109/GC-ElecEng52322.2021.9788252","DOIUrl":"https://doi.org/10.1109/GC-ElecEng52322.2021.9788252","url":null,"abstract":"Recently, the traditional power grid has been evolving into a new type of intelligent system known as smart grid. The new smart grid uses information and communication technologies to automate and optimize the power generation and distribution process. Despite improvements, there are still challenges that cannot be solved using existing technologies. Blockchain is an emerging technology with unique features to solve some of remaining challenges in smart grids. In this paper, we review the recent developments in this area. We describe the existing smart grid challenges, explore blockchain features suitable for smart grids, and highlight notable existing successful implementations. The review shows several applications such as peer to peer energy trading and autonomous asset management that have been enabled by blockchain technology. It also highlights challenges such as performance and regulations that might hinder the future use of blockchains in smart grids.","PeriodicalId":344268,"journal":{"name":"2021 Global Congress on Electrical Engineering (GC-ElecEng)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132885868","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 : 2021-12-10DOI: 10.1109/GC-ElecEng52322.2021.9788286
J. Montero, M. Feliu, J. Bas
Current societal needs demand for global high-speed networks. Toward this regard, 3GPP has included in its release 17 Non-Terrestrial Networks (NTN). In order to meet the strict requirements of 6G networks, Very Low Earth Orbit (VLEO) and Low Earth Orbit (LEO) satellites will play a key role. Optical fibers can also be used for transmitting data at high speeds. Unfortunately, the refraction index of the optical fibers and the satellite altitude penalize them. So, this paper determines the transmission distance for which it is better to use optical fiber or satellite links. For a fair comparison in terms of bandwidth, it has been assumed that the LEO/VLEO satellites should be optical too. After that an algorithm has been developed to determine the best suitable regions for locating the ground station of an optical satellite. Specifically, it computes the degree of cloudiness of a certain geographic region. Given that the determination of such regions demands a large computational burden, it has been parallelized using OpenMP libraries for Python. The Iberian Peninsula, which images were taken by the METEOSAT satellite from EUMETSAT, has been considered as a paradigmatic case of study.
{"title":"Optical Communications Through Low Orbit Satellites","authors":"J. Montero, M. Feliu, J. Bas","doi":"10.1109/GC-ElecEng52322.2021.9788286","DOIUrl":"https://doi.org/10.1109/GC-ElecEng52322.2021.9788286","url":null,"abstract":"Current societal needs demand for global high-speed networks. Toward this regard, 3GPP has included in its release 17 Non-Terrestrial Networks (NTN). In order to meet the strict requirements of 6G networks, Very Low Earth Orbit (VLEO) and Low Earth Orbit (LEO) satellites will play a key role. Optical fibers can also be used for transmitting data at high speeds. Unfortunately, the refraction index of the optical fibers and the satellite altitude penalize them. So, this paper determines the transmission distance for which it is better to use optical fiber or satellite links. For a fair comparison in terms of bandwidth, it has been assumed that the LEO/VLEO satellites should be optical too. After that an algorithm has been developed to determine the best suitable regions for locating the ground station of an optical satellite. Specifically, it computes the degree of cloudiness of a certain geographic region. Given that the determination of such regions demands a large computational burden, it has been parallelized using OpenMP libraries for Python. The Iberian Peninsula, which images were taken by the METEOSAT satellite from EUMETSAT, has been considered as a paradigmatic case of study.","PeriodicalId":344268,"journal":{"name":"2021 Global Congress on Electrical Engineering (GC-ElecEng)","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133258081","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 : 2021-12-10DOI: 10.1109/GC-ElecEng52322.2021.9788283
Hussain Kahil, Irfan Ahmad, Adnan S. Nouh, Yasser Bin Salamah
An ultra-precise micro/nanopositioning system is one of the key requirements for the rapid advancements in the field of micro/nanotechnology. A frequently used used actuator in micro/nanopositioning systems is the piezoelectric actuator, which, although precise, exhibits some unwanted phenomena like hysteresis, creep and high-frequency vibrations. Hysteresis is recognized as the main nonlinearity in the piezoelectric actuator, which severely limits system performance or even leads to instability. Hysteresis compensation is usually performed with an inverse hysteresis model, which is often a challenging task. Motivated by the above challenges, this paper aims to analyze the tracking performance of a piezoelectric actuator with an intelligent fuzzy feedback controller cascaded in series with the Bouc-Wen feedforward compensator. The feedforward compensator is now designed without finding an inverse hysteresis model to avoid the inverse modeling complexity. The mathematical model of the considered system is identified from the real-time experimental data. The model parameters are estimated using the Output Error with Filtered Observations (OEFO) adaptation algorithm. The parameters of the considered Bouc-Wen hysteresis model are identified by using the nonlinear curve fitting problem. The achieved results with the suggested control scheme are then compared with a classical PID feedback controller cascaded in series with the feedforward compensator. The achieved results with the suggested fuzzy feedback controller cascaded with the Bouc-Wen feedforward compensator show the performance improvement in terms of tracking precision and also in compensating the hysteresis nonlinearity compared to the classical PID feedback controller.
{"title":"Tracking Control of a Piezoelectric Actuator with Hysteresis Compensation Using Fuzzy Logic with Feed-Forward Controller","authors":"Hussain Kahil, Irfan Ahmad, Adnan S. Nouh, Yasser Bin Salamah","doi":"10.1109/GC-ElecEng52322.2021.9788283","DOIUrl":"https://doi.org/10.1109/GC-ElecEng52322.2021.9788283","url":null,"abstract":"An ultra-precise micro/nanopositioning system is one of the key requirements for the rapid advancements in the field of micro/nanotechnology. A frequently used used actuator in micro/nanopositioning systems is the piezoelectric actuator, which, although precise, exhibits some unwanted phenomena like hysteresis, creep and high-frequency vibrations. Hysteresis is recognized as the main nonlinearity in the piezoelectric actuator, which severely limits system performance or even leads to instability. Hysteresis compensation is usually performed with an inverse hysteresis model, which is often a challenging task. Motivated by the above challenges, this paper aims to analyze the tracking performance of a piezoelectric actuator with an intelligent fuzzy feedback controller cascaded in series with the Bouc-Wen feedforward compensator. The feedforward compensator is now designed without finding an inverse hysteresis model to avoid the inverse modeling complexity. The mathematical model of the considered system is identified from the real-time experimental data. The model parameters are estimated using the Output Error with Filtered Observations (OEFO) adaptation algorithm. The parameters of the considered Bouc-Wen hysteresis model are identified by using the nonlinear curve fitting problem. The achieved results with the suggested control scheme are then compared with a classical PID feedback controller cascaded in series with the feedforward compensator. The achieved results with the suggested fuzzy feedback controller cascaded with the Bouc-Wen feedforward compensator show the performance improvement in terms of tracking precision and also in compensating the hysteresis nonlinearity compared to the classical PID feedback controller.","PeriodicalId":344268,"journal":{"name":"2021 Global Congress on Electrical Engineering (GC-ElecEng)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114384344","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 : 2021-12-10DOI: 10.1109/GC-ElecEng52322.2021.9788229
Rodrigo Possidônio Noronha
This work aims to perform the performance analysis of the Fractional Least Mean Square (FLMS) algorithm in the Direct Adaptive Inverse Control (DAIC) design, in terms of convergence speed and steady-state Mean Square Error (MSE), for the controller weight vector. The controller, obtained through inverse identification of the plant model, is based on a Finite Impulse Response (FIR) adaptive filter. To obtain non-conservative results, the performance analysis was performed in the presence of a sinusoidal reference signal and sinusoidal disturbance signal. As an increment of complexity to the DAIC design, the plant model is non-minimum phase.
{"title":"Direct Adaptive Inverse Control via Fractional Least Mean Square","authors":"Rodrigo Possidônio Noronha","doi":"10.1109/GC-ElecEng52322.2021.9788229","DOIUrl":"https://doi.org/10.1109/GC-ElecEng52322.2021.9788229","url":null,"abstract":"This work aims to perform the performance analysis of the Fractional Least Mean Square (FLMS) algorithm in the Direct Adaptive Inverse Control (DAIC) design, in terms of convergence speed and steady-state Mean Square Error (MSE), for the controller weight vector. The controller, obtained through inverse identification of the plant model, is based on a Finite Impulse Response (FIR) adaptive filter. To obtain non-conservative results, the performance analysis was performed in the presence of a sinusoidal reference signal and sinusoidal disturbance signal. As an increment of complexity to the DAIC design, the plant model is non-minimum phase.","PeriodicalId":344268,"journal":{"name":"2021 Global Congress on Electrical Engineering (GC-ElecEng)","volume":"2005 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127665142","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 : 2021-12-10DOI: 10.1109/GC-ElecEng52322.2021.9788384
A. Miura, Mar Parra, Jaime Lloret, M. Rodilla
Water is an important resource for socioeconomic and environmental activities. Therefore, its quality should be monitored with the affordability of the system being a key factor. Dissolved oxygen is an important parameter to control when assessing water quality. We ran a preliminary study of its determination using optical techniques using two samples. One of them had saline water, while the other had fresh water. The samples were brought to 0% (with Na2SO3) and 100% (with an aerator) dissolved oxygen levels. With the samples at 0% and 100% dissolved oxygen, a spectrophotometer was used to determine the best wavelength for the detection of variations. The results show promising differences in the blue visible light (455 nm, 460 nm, 470 nm, and 505 nm) and infrared wavelengths (950 nm). The differences for infrared light showed less dispersion and similar differences for both fresh tap water and saline water (0.018 and 0.014, respectively). Both wavelength ranges could be useful. Three stability tests were conducted for the prototype, using a blue Light Emitting Diode and a photodiode with a Light Dependent Resistance. The Light Dependent Resistance showed interferences with the salinity; therefore, the final sensor should be isolated from the medium.
{"title":"LED optical sensor prototype to determine dissolved oxygen saturation in water","authors":"A. Miura, Mar Parra, Jaime Lloret, M. Rodilla","doi":"10.1109/GC-ElecEng52322.2021.9788384","DOIUrl":"https://doi.org/10.1109/GC-ElecEng52322.2021.9788384","url":null,"abstract":"Water is an important resource for socioeconomic and environmental activities. Therefore, its quality should be monitored with the affordability of the system being a key factor. Dissolved oxygen is an important parameter to control when assessing water quality. We ran a preliminary study of its determination using optical techniques using two samples. One of them had saline water, while the other had fresh water. The samples were brought to 0% (with Na2SO3) and 100% (with an aerator) dissolved oxygen levels. With the samples at 0% and 100% dissolved oxygen, a spectrophotometer was used to determine the best wavelength for the detection of variations. The results show promising differences in the blue visible light (455 nm, 460 nm, 470 nm, and 505 nm) and infrared wavelengths (950 nm). The differences for infrared light showed less dispersion and similar differences for both fresh tap water and saline water (0.018 and 0.014, respectively). Both wavelength ranges could be useful. Three stability tests were conducted for the prototype, using a blue Light Emitting Diode and a photodiode with a Light Dependent Resistance. The Light Dependent Resistance showed interferences with the salinity; therefore, the final sensor should be isolated from the medium.","PeriodicalId":344268,"journal":{"name":"2021 Global Congress on Electrical Engineering (GC-ElecEng)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132902174","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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