Australian Journal of Electrical and Electronics Engineering最新文献_第10页

A hybrid approach for optimising the geometry and design of Ultra Wide Band (UWB) antenna 一种优化超宽带(UWB)天线几何结构和设计的混合方法

Australian Journal of Electrical and Electronics Engineering Pub Date : 2022-01-17 DOI: 10.1080/1448837X.2021.2023076

M. Satyanarayana, D. Prabhakar

引用次数: 0

A genetic algorithm-based support vector machine model for detection of hearing thresholds 基于遗传算法的听力阈值检测支持向量机模型

Australian Journal of Electrical and Electronics Engineering Pub Date : 2022-01-16 DOI: 10.1080/1448837X.2021.2023080

M. Djemai, M. Guerti

{"title":"A genetic algorithm-based support vector machine model for detection of hearing thresholds","authors":"M. Djemai, M. Guerti","doi":"10.1080/1448837X.2021.2023080","DOIUrl":"https://doi.org/10.1080/1448837X.2021.2023080","url":null,"abstract":"ABSTRACT Auditory evoked potentials (AEPs), which are detected on the EEG auditory cortex area, are very small signals in response to a sound stimulus (or electric) from the inner ear to the cerebral cortex. These signals are recorded from electrodes attached to the scalp and are used for measuring the bioelectric function of the auditory pathway. In order to characterise their dynamic behaviour and due to the complex behaviour of nonlinear dynamic properties of EEG signals, several nonlinear analyses have been performed. In this work, Detrented Fluctuation Analysis (DFA) is applied to estimate the Fractal Dimension (FD) from the recorded AEP signals of the normal and the impaired hearing subjects. This aims at detecting their hearing threshold level. With the aim of classifying both groups, the normal and hearing impaired subjects, a hybrid approach based on the Support Vector machines (SVM) and genetic algorithms (GA) is taken: GA is applied to simultaneously optimise both SVM kernel parameters and feature subset selection. Our results indicate that the hybrid GA-SVM is promising; it is able to determine well the SVM kernel parameters along with feature subset selection, which will result in a high classification accuracy.","PeriodicalId":34935,"journal":{"name":"Australian Journal of Electrical and Electronics Engineering","volume":"9 1","pages":"194 - 201"},"PeriodicalIF":0.0,"publicationDate":"2022-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83523459","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: 2

Frequency reconfigurable patch antenna using slot, slits and defected ground structures: parametric analysis 频率可重构贴片天线使用槽，狭缝和缺陷地面结构:参数分析

Australian Journal of Electrical and Electronics Engineering Pub Date : 2022-01-13 DOI: 10.1080/1448837X.2021.2023077

Vinaya.Y. Deshmukh, S. Chorage

引用次数: 1

Predicting the effects of task jitter in digital control systems 数字控制系统中任务抖动影响的预测

Australian Journal of Electrical and Electronics Engineering Pub Date : 2022-01-12 DOI: 10.1080/1448837X.2021.2023250

L. Tran, P. Radcliffe, Liuping Wang

{"title":"Predicting the effects of task jitter in digital control systems","authors":"L. Tran, P. Radcliffe, Liuping Wang","doi":"10.1080/1448837X.2021.2023250","DOIUrl":"https://doi.org/10.1080/1448837X.2021.2023250","url":null,"abstract":"ABSTRACT Many digital controllers need an operating system to perform tasks such as networking and file operations. This causes an increase in task jitter which can affect the performance of the control system. Some researchers have claimed that Root-Mean-Square (RMS) of the task jitter is a good indicator of how the control system will be affected but there has been without evi- dence to show this to be true. In this paper, Gaussian, Uniform and a Brute force distributed task jitter, all with the same jitter RMS, were tested on a second order control system. The collected step response envelopes of 10,000 simulations for each jitter type show a very similar shape suggesting that task jitter RMS is a good indicator of control system performance. The overshoot distribution is shown to be normal which means that system performance can be characterised by a much smaller number of simulation runs.The work also shows that particular patterns can have a significant impact on overshoot and settling time. A real control system subject to task jitter may randomly and occasionally show extreme behaviour which may be outside acceptable limits. Simulation is essential to find these extremes early in the design process.","PeriodicalId":34935,"journal":{"name":"Australian Journal of Electrical and Electronics Engineering","volume":"3 1","pages":"253 - 260"},"PeriodicalIF":0.0,"publicationDate":"2022-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90316605","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

Improved cuckoo search approach based optimal proportional-derivative parameters for quadcopter flight control 基于改进布谷鸟搜索的四轴飞行器最优比例导数参数控制

Australian Journal of Electrical and Electronics Engineering Pub Date : 2022-01-10 DOI: 10.1080/1448837X.2021.2023248

Nada El Gmili, Mostafa Mjahed, A. Elkari, H. Ayad

引用次数: 0

A Quadrilateral Shaped Fractal Slot Planar Antenna for Ultra-Wide Band Applications 一种用于超宽带的四边形分形槽平面天线

Australian Journal of Electrical and Electronics Engineering Pub Date : 2022-01-07 DOI: 10.1080/1448837X.2021.2024317

Ranjeet Kumar, R. Sinha, A. Choubey, S. K. Mahto

{"title":"A Quadrilateral Shaped Fractal Slot Planar Antenna for Ultra-Wide Band Applications","authors":"Ranjeet Kumar, R. Sinha, A. Choubey, S. K. Mahto","doi":"10.1080/1448837X.2021.2024317","DOIUrl":"https://doi.org/10.1080/1448837X.2021.2024317","url":null,"abstract":"ABSTRACT This paper presents a low-profile quadrilateral-shaped fractal slot planar antenna using a novel fractal geometry where circular, triangular and regular hexagonal motifs are iterated to form antenna elements. It consists of a partial ground plane and a triangular fractal-shaped patch fed by a microstrip line having an I-shape rectangular slot to increase the bandwidth. A compact 32 × 22 mm2 fractal antenna proposed here is investigated to evaluate its performance in ultra-wideband (UWB) applications. The bandwidth of 15.5 GHz ranging from 3.57 GHz to 19.07 GHz with voltage standing wave ratio (VSWR) less than 2 in the entire operating band is achieved. Simulated values of realisable gain (6.8 dBi), impedance bandwidth (15.5 GHz), radiation efficiency (90%), radiation patterns and group delay evaluation indicate that the discussed antenna is favourable for UWB applications such as world interoperability microwave access, wireless local area network, 5 G, X-band, C-band, S-band and Ku-band. The proposed antenna is fabricated, and measured results are compared with simulated results as well as with those reported in the literature.","PeriodicalId":34935,"journal":{"name":"Australian Journal of Electrical and Electronics Engineering","volume":"13 1","pages":"270 - 282"},"PeriodicalIF":0.0,"publicationDate":"2022-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72741123","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: 3

A grid-connected single-stage closed-loop controlled five-level boosting inverter for solar PV systems 太阳能光伏系统并网单级闭环控制五电平升压逆变器

Australian Journal of Electrical and Electronics Engineering Pub Date : 2022-01-07 DOI: 10.1080/1448837X.2021.2023078

A. Singh, R. K. Mandal

引用次数: 4

Transient stability risk assessment framework incorporating circuit breaker failure and severe weather 考虑断路器故障和恶劣天气的暂态稳定风险评估框架

Australian Journal of Electrical and Electronics Engineering Pub Date : 2022-01-07 DOI: 10.1080/1448837X.2021.2023072

U. Shahzad

{"title":"Transient stability risk assessment framework incorporating circuit breaker failure and severe weather","authors":"U. Shahzad","doi":"10.1080/1448837X.2021.2023072","DOIUrl":"https://doi.org/10.1080/1448837X.2021.2023072","url":null,"abstract":"ABSTRACT Due to the rising uncertainties in the power system and the need to develop a competitive electricity market, the risk of transient stability is an important issue to address. The traditional deterministic methods of transient stability assessment fail to consider the uncertain nature of input variables. Moreover, there is a dire requirement to incorporate the impact of circuit breaker failure and severe weather in the transient stability risk assessment procedure. Majority of transient stability risk research assumes that the circuit breaker will always trip upon fault detection; however, in practice, the circuit breaker may not operate due to internal fault. Thus, this paper proposes a transient stability risk assessment framework,incorporating circuit breaker failure and severe weather. It considers the impact of severe weather, in the form of wind storms. The concept of fragility curves is used to model this impact. The IEEE 14-bus and the IEEE 39-bus test systems were used to test and validate the effectiveness of the proposed approach. DIgSILENT PowerFactory was utilised for time-domain simulations for transient stability risk evaluation. The results show that it is vital to consider the circuit breaker failure and severe weather in the transient stability risk assessment procedure.","PeriodicalId":34935,"journal":{"name":"Australian Journal of Electrical and Electronics Engineering","volume":"23 1","pages":"137 - 148"},"PeriodicalIF":0.0,"publicationDate":"2022-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88979358","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: 2

A practical implementation of mask detection for COVID-19 using face detection and histogram of oriented gradients 基于人脸检测和定向梯度直方图的COVID-19口罩检测的实际实现

Australian Journal of Electrical and Electronics Engineering Pub Date : 2022-01-07 DOI: 10.1080/1448837X.2021.2023071

S. Chelbi, A. Mekhmoukh

引用次数: 1

Sensor integration for real-time data acquisition in aerial surveillance 用于空中监视实时数据采集的传感器集成

Australian Journal of Electrical and Electronics Engineering Pub Date : 2022-01-06 DOI: 10.1080/1448837X.2021.2023070

Wahyu Rahmaniar, A. W. Santoso

{"title":"Sensor integration for real-time data acquisition in aerial surveillance","authors":"Wahyu Rahmaniar, A. W. Santoso","doi":"10.1080/1448837X.2021.2023070","DOIUrl":"https://doi.org/10.1080/1448837X.2021.2023070","url":null,"abstract":"ABSTRACT The unmanned aerial vehicle (UAV) is one of the mobile robots which has grown rapidly in popularity in recent years. UAVs have been used in various activities to convey important information on the aerial transportation system. However, an application to get real-time information from UAVs remains a challenging task. Therefore, this paper presents an integration system to optimise the use of UAVs for aerial surveillance. The proposed system explains the design and implementation a UAV system which consists of on-board and ground stations. The on-board system has the function to send UAV flight data, send aerial images and carry items using a gripper which equipped with sensors to detect obstacles. The ground station has the function to control UAV flights, receive and display UAV flight data and aerial images, display the attitude of the UAV and send commands to move the camera and gripper. Flight controllers in this system use non-linear complementary filter on SO(3) to estimate the attitude of the UAV and proportional-integral (PI) controller to stabilise the UAV flight. By providing the real-time acquisition data of the UAV, we believe this system can be a useful tool for many implementations using UAV.","PeriodicalId":34935,"journal":{"name":"Australian Journal of Electrical and Electronics Engineering","volume":"115 1","pages":"117 - 128"},"PeriodicalIF":0.0,"publicationDate":"2022-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83176747","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