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A Time-Based Analogue-to-Digital Converter for ECG Applications 一种用于ECG应用的基于时间的模数转换器
2021 29th Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2021-05-18 DOI: 10.1109/ICEE52715.2021.9544304
Atiyeh Karimlou, M. Yavari
{"title":"A Time-Based Analogue-to-Digital Converter for ECG Applications","authors":"Atiyeh Karimlou, M. Yavari","doi":"10.1109/ICEE52715.2021.9544304","DOIUrl":"https://doi.org/10.1109/ICEE52715.2021.9544304","url":null,"abstract":"This paper presents a low-power time-based analog-to-digital converter (ADC) for wearable electrocardiogram (ECG) sensor applications. In this work, by applying the difference between two consecutive samples to the input of the conventional voltage-to-time converter, the requirements on the high-frequency ramp signal will be relaxed and we can design for low power consuming implementation. The proposed approach reduces the converter complexity and generates a 1-bit data stream which leads to more power saving. The proposed circuit was designed and simulated in the 180 nm CM OS technology process, achieving a resolution of 10.4 bit and consumes 163 nW power with a supply voltage of 0.8 V.","PeriodicalId":254932,"journal":{"name":"2021 29th Iranian Conference on Electrical Engineering (ICEE)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126738669","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}
引用次数: 1
Image Quality Equations for Focused Transducer in Circular Photoacoustic Computed Tomography 圆形光声计算机断层成像中聚焦换能器的图像质量方程
2021 29th Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2021-05-18 DOI: 10.1109/ICEE52715.2021.9544449
Soheil Hakakzadeh, Z. Kavehvash
{"title":"Image Quality Equations for Focused Transducer in Circular Photoacoustic Computed Tomography","authors":"Soheil Hakakzadeh, Z. Kavehvash","doi":"10.1109/ICEE52715.2021.9544449","DOIUrl":"https://doi.org/10.1109/ICEE52715.2021.9544449","url":null,"abstract":"In this paper, we divide the imaging geometry of a photoacoustic computed tomography (PACT) structure that have a circular geometry and have focused transducers of positive or negative focus, into different zones of varying resolution. With using the presented analysis, it is possible to find the maximum range in which the system resolution is at its best value, according to the device specifications. The following equations are used to find the blind spot angles of the system for each source point inside the chamber. These are important for two reasons: the first is that the user can calculate the range in which the imaging system has the best quality by entering the specifications of his PACT system in the equations mentioned in this article. The second is that the user can, depending on his minimum expectations of a PACT system, use the presented equations to calculate the parameters required to design a PACT system.","PeriodicalId":254932,"journal":{"name":"2021 29th Iranian Conference on Electrical Engineering (ICEE)","volume":"301 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124302601","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}
引用次数: 6
Enhanced Optimal Droop Control for Effective Load Sharing in an Islanded Microgrid 孤岛微电网有效负荷分担的改进最优下垂控制
2021 29th Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2021-05-18 DOI: 10.1109/ICEE52715.2021.9544404
R. Zahedi, H. Rastegar
{"title":"Enhanced Optimal Droop Control for Effective Load Sharing in an Islanded Microgrid","authors":"R. Zahedi, H. Rastegar","doi":"10.1109/ICEE52715.2021.9544404","DOIUrl":"https://doi.org/10.1109/ICEE52715.2021.9544404","url":null,"abstract":"Microgrids (MG) are suffering from devastative effects of the total harmonic distortion (THD) due to the low inertia compared with the conventional grids. Not only does THD affect the power quality but also increases the load sharing error which in turn could lead the MG to an unstable condition. In this way, the need for compensation algorithms that can overcome the barriers alongside this problem is felt more than ever. In this paper, a compensation algorithm that is inspired by active power filters performance for non-linear load based on the instantaneous power theory in $alphabeta$ frame is proposed to compensate the effects of non-linear loads on droop control and to prevent instability of islanded MGs. Further, an optimization procedure is proposed to find the optimal coefficients of the proposed algorithm.","PeriodicalId":254932,"journal":{"name":"2021 29th Iranian Conference on Electrical Engineering (ICEE)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123688530","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}
引用次数: 0
Using the Artificial Bee Colony (ABC) Algorithm in Collaboration with the Fog Nodes in the Internet of Things Three-layer Architecture 基于人工蜂群(ABC)算法与雾节点协同的物联网三层架构
2021 29th Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2021-05-18 DOI: 10.1109/ICEE52715.2021.9544399
Shakoor Vakilian, Seyed Vahid Moravvej, A. Fanian
{"title":"Using the Artificial Bee Colony (ABC) Algorithm in Collaboration with the Fog Nodes in the Internet of Things Three-layer Architecture","authors":"Shakoor Vakilian, Seyed Vahid Moravvej, A. Fanian","doi":"10.1109/ICEE52715.2021.9544399","DOIUrl":"https://doi.org/10.1109/ICEE52715.2021.9544399","url":null,"abstract":"Today, with the increase of objects and physical devices connected to the Internet and the creation of an intelligent environment, a new paradigm as the Internet of Things (IoT), has been introduced. In this paradigm, fog computing is used as an essential capability to increase IoT processing power. Due to the expansion of these nodes from the edge of the network to the cloud, and their ability to process data near objects, the service time for objects and physical devices can be reduced. In addition, the collaboration between fog nodes can lead to the use of idle resources and further reduce response time. On the other hand, this collaboration could lead to an increase in energy costs in all fog nodes. Therefore, in this paper, an optimization problem is introduced with the aim of the collaboration in fog nodes along with the cloud to make the balance between the average response time and energy cost. Then, the proposed problem is solved using the artificial bee colony optimization algorithm. The evaluation results show that the proposed solution has been able to significant effects on reducing the response time and energy cost and obtain the optimal value.","PeriodicalId":254932,"journal":{"name":"2021 29th Iranian Conference on Electrical Engineering (ICEE)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121904405","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}
引用次数: 23
Optimal Path Planning and Control of a Hexarotor with Mass Uncertainty in the Presence of Dynamic Obstacles and Wind Using Sliding Mode and Adaptive PSO Algorithm 基于滑模和自适应粒子群算法的具有质量不确定性的六旋翼在动态障碍和风环境下的最优路径规划与控制
2021 29th Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2021-05-18 DOI: 10.1109/ICEE52715.2021.9544503
Nima Sina, Peyman Amiri, M. Danesh
{"title":"Optimal Path Planning and Control of a Hexarotor with Mass Uncertainty in the Presence of Dynamic Obstacles and Wind Using Sliding Mode and Adaptive PSO Algorithm","authors":"Nima Sina, Peyman Amiri, M. Danesh","doi":"10.1109/ICEE52715.2021.9544503","DOIUrl":"https://doi.org/10.1109/ICEE52715.2021.9544503","url":null,"abstract":"This article proposes a sliding mode and a feedback linearization controller for position and attitude control of a hexarotor with an uncertain mass under effect of wind. Also, a constrained adaptive particles swarm optimization (APSO) algorithm is used to find the optimal path and avoid moving obstacles with time-varying radiuses. Furthermore, the stability proof of the controllers for this case is presented. Finally, the results of simulations are utilized to present the operation of the proposed controllers and path planning algorithm performance.","PeriodicalId":254932,"journal":{"name":"2021 29th Iranian Conference on Electrical Engineering (ICEE)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122472423","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}
引用次数: 0
A Simulation Case Study of THz Reflection Spectroscopy 太赫兹反射光谱的仿真实例研究
2021 29th Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2021-05-18 DOI: 10.1109/ICEE52715.2021.9544278
M. Mirsalehi, Z. Kavehvash, M. Fardmanesh
{"title":"A Simulation Case Study of THz Reflection Spectroscopy","authors":"M. Mirsalehi, Z. Kavehvash, M. Fardmanesh","doi":"10.1109/ICEE52715.2021.9544278","DOIUrl":"https://doi.org/10.1109/ICEE52715.2021.9544278","url":null,"abstract":"We have modelled and simulated a simple THz spectroscopic system to identify materials. A Vivaldi antenna with suitable specifications was used as a transmitter in the simulation. In order to characterize the object, we applied two different methods based on the derivative of the reflectivity and the Kramers-Kronig relations. Also, to obtain the optimized incident angle, we calculated the reflection sensitivity of the sample to the angle of incidence using the Fresnel equations and verified our result by simulation.","PeriodicalId":254932,"journal":{"name":"2021 29th Iranian Conference on Electrical Engineering (ICEE)","volume":"248 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131405004","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}
引用次数: 0
Design and Analysis of a New Electrically Controllable Brushless Eddy-Current Clutch 一种新型电控无刷涡流离合器设计与分析
2021 29th Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2021-05-18 DOI: 10.1109/ICEE52715.2021.9544501
H. M. Pirouz, Mohammadreza Baghayipour
{"title":"Design and Analysis of a New Electrically Controllable Brushless Eddy-Current Clutch","authors":"H. M. Pirouz, Mohammadreza Baghayipour","doi":"10.1109/ICEE52715.2021.9544501","DOIUrl":"https://doi.org/10.1109/ICEE52715.2021.9544501","url":null,"abstract":"This paper investigates the design and analysis of a new structure for eddy-current clutches, which can electrically control the torque transmission and gradual engagement through a brushless and dc supplied internal coil. As a highly controllable, robust, low cost and with no wearable parts, the suggested clutch system is applicable to seamless automated manual transmissions for both electric and hybrid vehicles. Besides, since torque is transmitted magnetically, there is no contact, so no wear occurs to any of the torque transferring components, providing for extremely long life. The design steps, which are followed by electromagnetic calculations as well as design optimization in MATLAB are discussed in detail. Finally, the validity of the results is verified through simulating in a 3D Finite-Element software (JMAG-Designer16.0).","PeriodicalId":254932,"journal":{"name":"2021 29th Iranian Conference on Electrical Engineering (ICEE)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131341553","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}
引用次数: 0
Design and Determination of Two Separate Rotor Axial Flux Permanent Magnet Motor Load and Efficiency 双转子轴向磁通永磁电机负载及效率的设计与确定
2021 29th Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2021-05-18 DOI: 10.1109/ICEE52715.2021.9544329
Siamak Omrani, A. Darabi
{"title":"Design and Determination of Two Separate Rotor Axial Flux Permanent Magnet Motor Load and Efficiency","authors":"Siamak Omrani, A. Darabi","doi":"10.1109/ICEE52715.2021.9544329","DOIUrl":"https://doi.org/10.1109/ICEE52715.2021.9544329","url":null,"abstract":"After designing and constructing electrical motors, determining the load and efficiency is essential for extracting its operational behavior. Double-sided axial flux permanent magnet motors can be used in different applications such as electric cars, which have attracted so much attention in recent years. There are various structures of double-sided axial flux permanent magnet motors. One of the most recent structures is with two independent rotors that can be loaded separately. It is called two separate rotor axial flux permanent magnet motor. In this article, the loading study of two separate rotor axial flux permanent magnet motor is studied using the finite element method and in two ways. First, the load in one rotor is constant at rated value and the load in the other rotor is increased from no load to rated load, and then, the sum of load in the two rotors is constant. Results in this paper show that the proposed structure has improved load flexibility compared to conventional structures and by increasing the load difference in two rotors, THD of stator current and RF of the load torque is becoming better.","PeriodicalId":254932,"journal":{"name":"2021 29th Iranian Conference on Electrical Engineering (ICEE)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128264329","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}
引用次数: 0
Dimensioning of 5G networks by using stochastic geometry 基于随机几何的5G网络维数
2021 29th Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2021-05-18 DOI: 10.1109/ICEE52715.2021.9544432
Siminfar Samakoush Galougah, M. Mozaffaripour
{"title":"Dimensioning of 5G networks by using stochastic geometry","authors":"Siminfar Samakoush Galougah, M. Mozaffaripour","doi":"10.1109/ICEE52715.2021.9544432","DOIUrl":"https://doi.org/10.1109/ICEE52715.2021.9544432","url":null,"abstract":"In this paper, we propose an analytical model for dimensioning of Orthogonal Frequency Division Multiple Access (OFDMA) systems in 5G networks by considering Internet of Thing (IoT) application using stochastic geometry. In these systems, some communication is lost when the number of required subcarriers is greater than the number of available subcarriers. We compute the upper bound of the lost communication probability for downlink. In such a system, the position of receiving users is modeled by the Poisson point process. The number of subcarriers dedicated to each user depends on its Signal to Noise Ratio (SNR), position and the shadowing, hence for calculating the number of subcarriers, it is needed to use stochastic geometry. Multigroup user system with each group of users having its own application and throughput requirement is considered. For having dimensioning in terms of subcarriers, we present concentration inequality for functions defined on the Poisson point processes to calculate the upper bound of loss probability. The performance of the upper bound in different ranae of user intensity is investiaated.","PeriodicalId":254932,"journal":{"name":"2021 29th Iranian Conference on Electrical Engineering (ICEE)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121143460","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}
引用次数: 0
A Novel Interpretation of Coding in Time-Modulated Arrays 时间调制阵列编码的一种新解释
2021 29th Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2021-05-18 DOI: 10.1109/ICEE52715.2021.9544260
M. Gholami, M. Neshat
{"title":"A Novel Interpretation of Coding in Time-Modulated Arrays","authors":"M. Gholami, M. Neshat","doi":"10.1109/ICEE52715.2021.9544260","DOIUrl":"https://doi.org/10.1109/ICEE52715.2021.9544260","url":null,"abstract":"In this paper, we show that the digital code bits used in the time-coded modulation arrays can be interpreted as vector elements, and with this new interpretation, a better understanding of the relationship between the codes and the amplitude/phase of the generated harmonic signals is obtained. Using such interpretation, we show that one can easily perform the beam steering in a TMA by electronically shifting the bits of a proper code. Through full-wave simulations, we demonstrate the beam steering of a TMA without the use of any phase shifter, and only by shifting the digital code bits. The proposed interpretation can play an important role in reducing the complexity of the optimal code selection in controlling of TMAs.","PeriodicalId":254932,"journal":{"name":"2021 29th Iranian Conference on Electrical Engineering (ICEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130668617","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}
引用次数: 0
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