Electrical Control and Communication Engineering最新文献_第2页

Increasing the Piezoactivity of Manufactured Composite Piezoceramic Transformers by Combining the Processes of Soldering and Polarization 结合焊接和极化工艺提高复合压电陶瓷变压器的压电活性

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Electrical Control and Communication Engineering Pub Date : 2021-06-01 DOI: 10.2478/ecce-2021-0009

Yurii Paerand, O. Zakhozhai

{"title":"Increasing the Piezoactivity of Manufactured Composite Piezoceramic Transformers by Combining the Processes of Soldering and Polarization","authors":"Yurii Paerand, O. Zakhozhai","doi":"10.2478/ecce-2021-0009","DOIUrl":"https://doi.org/10.2478/ecce-2021-0009","url":null,"abstract":"Abstract The article is devoted to solving the problem of ensuring high piezoactivity of composite piezoceramic transformers, in which the component parts are connected by soldering. The existing connection features have been analysed for the elements of composite piezoceramic transformers and the results have shown that during soldering the piezoceramic elements are exposed to thermal shock leading to depolarization of piezoceramics and deterioration of its piezoelectric properties. Diminution of temperature depolarizing effect is possible using low-temperature solders with a high tin content. However, in this case, the diffusion process of the electrode material of the piezoelectric element into the solder increases and the mechanical connection strength decreases. To eliminate these negative phenomena and solve the problem, a new method has been developed for connecting elements of composite piezoceramic transformers by soldering, where a polarizing voltage is applied to the composite piezoceramic transformer when heating and cooling, which prevents depolarization of the domain structure of piezoceramic elements. At the same time, high temperature ensures that polarization is carried out at lower values of the electric tension, and a more mobile domain structure after polarization has a lower level of coercive forces and, accordingly, a greater stability of parameters ov er time. Experimental verification has shown that the relative resonance gap increases by 6 % with a decrease in the dispersion of this value by 12 %, which indicates an increase in piezoactivity and stability of the characteristics of composite piezoceramic transformers manufactured using the solution above.","PeriodicalId":42365,"journal":{"name":"Electrical Control and Communication Engineering","volume":"17 1","pages":"77 - 82"},"PeriodicalIF":0.7,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46252248","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

Improvement of Pilot Symbol Orthogonal Sequences in 2×2 to 4×4 MIMO Wireless Communication Systems with Channel State Estimation 信道状态估计对2×2~4×4MIMO无线通信系统中导频符号正交序列的改进

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Electrical Control and Communication Engineering Pub Date : 2021-06-01 DOI: 10.2478/ecce-2021-0004

V. Romanuke

{"title":"Improvement of Pilot Symbol Orthogonal Sequences in 2×2 to 4×4 MIMO Wireless Communication Systems with Channel State Estimation","authors":"V. Romanuke","doi":"10.2478/ecce-2021-0004","DOIUrl":"https://doi.org/10.2478/ecce-2021-0004","url":null,"abstract":"Abstract MIMO wireless communication systems with channel state estimation, in which 2 to 4 transmit-receive antenna pairs are employed, are simulated. The channel estimation is fulfilled by the orthogonal pilot signal approach, where the Walsh Hadamard-ordered sequences are commonly used for piloting. The signal is modulated by applying the quaternary phase shift keying method. Maximum 250 000 packets are transmitted through flat-fading Rayleigh channels, to which white Gaussian noise is added. Based on simulating 10 subcases of the frame length and number of pilot symbols per frame, it is ascertained that pilot symbol orthogonal sequences in 2×2 to 4×4 MIMO systems can be improved by substituting Walsh functions with partially unsymmetrical binary functions constituting the eight known orthogonal bases. The benefit is that the bit-error rate is substantially decreased, especially for 2×2 MIMO systems. Considering three cases of the pilot signal de-orthogonalization caused by two indefinite and definite pilot sequence symbol errors, the relative decrement varies from 0.123 % to 14.7 %. However, the decrement becomes less significant as the number of transmit-receive antenna pairs is increased.","PeriodicalId":42365,"journal":{"name":"Electrical Control and Communication Engineering","volume":"17 1","pages":"26 - 38"},"PeriodicalIF":0.7,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46366591","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

Reduction of Mutual Coupling in UWB/MIMO Antenna Using Stub Loading Technique 利用Stub加载技术降低UWB/MIMO天线的相互耦合

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Electrical Control and Communication Engineering Pub Date : 2021-06-01 DOI: 10.2478/ecce-2021-0002

A. H. Jabire, A. Abdu, S. Saminu, S. Salisu, A. Sadiq, Adamu Mohammed Jajere, Y. K. Ahmed

引用次数: 9

Economic Dispatch with Transmission Losses in a Distributed Generation Network of Bahawalpur Bahawalpur分布式发电网络中带输电损耗的经济调度

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Electrical Control and Communication Engineering Pub Date : 2021-06-01 DOI: 10.2478/ecce-2021-0005

Ahmad Khan, Zeeshan Rashid, F. Umer, Abdur Rehman Yousaf, Arif Saeed

{"title":"Economic Dispatch with Transmission Losses in a Distributed Generation Network of Bahawalpur","authors":"Ahmad Khan, Zeeshan Rashid, F. Umer, Abdur Rehman Yousaf, Arif Saeed","doi":"10.2478/ecce-2021-0005","DOIUrl":"https://doi.org/10.2478/ecce-2021-0005","url":null,"abstract":"Abstract In an electrical power system, the ultimate aim is to generate and deliver electrical energy to consumer side with minimum cost involved. Thus, least fuel cost, effective unit commitment and minimum transmission losses are desirous to achieve economic dispatch in a distributed generation network. In this research, economic dispatch considering transmission losses in a distributed generation network of Bahawalpur is reported. A MATLAB algorithm is designed which gives optimum division of power between two power plants and their transmission losses. Power plants considered here are thermal power plant Muzafargarh and Kot Addu Power Company (KAPCO), the former being located at smaller distance from Bahawalpur district. Finally, load trend of Bahawalpur district, optimum generation verses power demand, associated transmission losses, penalty factor and fuel cost economy are shown in the Results Section through graphs and tables. It is concluded that thermal power plant shares higher contribution of load power due to smaller distance from load and, thus, smaller transmission losses ensuring minimum cost operation.","PeriodicalId":42365,"journal":{"name":"Electrical Control and Communication Engineering","volume":"17 1","pages":"39 - 46"},"PeriodicalIF":0.7,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49390719","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

Data Processing in the Pilot Training Process on the Integrated Aircraft Simulator 综合飞机模拟器飞行员训练过程中的数据处理

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Electrical Control and Communication Engineering Pub Date : 2021-06-01 DOI: 10.2478/ecce-2021-0008

Y. Hryshchenko, M. Zaliskyi, S. Pavlova, O. Solomentsev, Tatiana Fursenko

{"title":"Data Processing in the Pilot Training Process on the Integrated Aircraft Simulator","authors":"Y. Hryshchenko, M. Zaliskyi, S. Pavlova, O. Solomentsev, Tatiana Fursenko","doi":"10.2478/ecce-2021-0008","DOIUrl":"https://doi.org/10.2478/ecce-2021-0008","url":null,"abstract":"Abstract Flight safety is an integral part of air transportation. Flight accidents are highly unlikely to appear but most of them are caused by the human factor. The aircrew training system for abnormal operations relies on integrated aircraft simulator-based exercises. Crew needs to be trained not to degrade piloting technique quality when facing increased psychophysiological tension. Therefore, methods evaluating the characteristics of ergatic aircraft control systems, warning systems for deterioration due to failures in avionics systems, piloting technique quality, and abnormal operation algorithms are necessary. An analysis of the bank angle has revealed that there are hidden increased tension manifestations in the human operator expressed in the transition of the flight parameter variation from a stationary random process to deterministic fluctuations in the form of a sinusoid. The goal of the research is to increase the efficiency of pilots’ training using integrated aircraft simulators based on the design and implementation of statistical data processing algorithms. To achieve the goal of the research, two algorithms for detecting deterministic fluctuations based on the Neyman-Pearson criterion and the optimal Bayesian criterion are developed. The presented algorithms can be used in the integrated simulator software to automate the decision-making process on piloting quality.","PeriodicalId":42365,"journal":{"name":"Electrical Control and Communication Engineering","volume":"17 1","pages":"67 - 76"},"PeriodicalIF":0.7,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48623824","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

A Hybrid Routing Approach Using Two Searching Layers 一种使用两个搜索层的混合路由方法

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Electrical Control and Communication Engineering Pub Date : 2021-06-01 DOI: 10.2478/ecce-2021-0007

G. Koca, Seda Yetkin

引用次数: 0

Square Slot Antenna for Wide Circularly Polarized Bandwidth and Axial Ratio Beamwidth 宽圆极化带宽和轴比波束宽度的方形缝隙天线

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Electrical Control and Communication Engineering Pub Date : 2021-06-01 DOI: 10.2478/ecce-2021-0001

Vijay Sharma, Tejpal Jhajharia

引用次数: 5

Device and Algorithm for Vehicle Detection and Traffic Intensity Analysis 车辆检测与交通强度分析的装置与算法

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Electrical Control and Communication Engineering Pub Date : 2021-06-01 DOI: 10.2478/ecce-2021-0010

M. Gorobetz, A. Potapov, A. Korneyev, Ivars Alps

{"title":"Device and Algorithm for Vehicle Detection and Traffic Intensity Analysis","authors":"M. Gorobetz, A. Potapov, A. Korneyev, Ivars Alps","doi":"10.2478/ecce-2021-0010","DOIUrl":"https://doi.org/10.2478/ecce-2021-0010","url":null,"abstract":"Abstract To effectively manage the traffic flow in order to reduce traffic congestion, it is necessary to know the volumes and quantitative indicators of this flow. Various detection methods are known for detecting a vehicle in a lane, which, in turn, have their own advantages and disadvantages. To detect vehicles and analyse traffic intensity, the authors use a pulse coherent radar (PCR) sensor module. Testing of various modes of operation of the radar sensor was carried out to select the optimal mode for detecting vehicles. The paper describes a method for fixing vehicles of different sizes, filtering and separating the vehicle from the traffic flow. The developed vehicle detection device works in conjunction with signal traffic lights, through which traffic control takes place. The signal traffic lights, which have their own sensors and control units, communicate with each other via a radio channel; there is no need for cable laying. The system is designed to work on road maintenance sites. The paper describes the experimental data when testing on a separate section of the road. The experiment showed the advantage of traffic lights (cars passed the regulated traffic light faster) from the point of view of calculating the traffic flow over the normal traffic light operation. Reducing downtime in traffic jams, in turn, has a beneficial effect on the environmental situation, since at the moment internal combustion engines prevail in vehicles.","PeriodicalId":42365,"journal":{"name":"Electrical Control and Communication Engineering","volume":"17 1","pages":"83 - 92"},"PeriodicalIF":0.7,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46956430","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 New Quasi Open Loop Synchronization Technique for Grid-Connected Applications 并网应用准开环同步新技术

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Electrical Control and Communication Engineering Pub Date : 2021-06-01 DOI: 10.2478/ecce-2021-0006

Zakaria Chedjara, A. Massoum, P. Wira, Ahmed Safa, Abdelmadjid Gouichiche

{"title":"A New Quasi Open Loop Synchronization Technique for Grid-Connected Applications","authors":"Zakaria Chedjara, A. Massoum, P. Wira, Ahmed Safa, Abdelmadjid Gouichiche","doi":"10.2478/ecce-2021-0006","DOIUrl":"https://doi.org/10.2478/ecce-2021-0006","url":null,"abstract":"Abstract This paper presents an effective quasi open-loop (QOLS) synchronization technique for grid -connected power converters that is organized in two different blocks. The first block is a new flexible technique for extracting the positive and negative sequence voltage under unbalanced and distorted conditions. It is a decoupled double self-tuning filter (DD-STF) or multiple self-tuning filters (M-STF) according to the conditions. The main advantages of this technique are its simple structure and the fact of being able to work under highly distorted conditions. Each harmonic is separately treated and this allows for selective compensation in active filter applications. The second block is the frequency detector; we propose a neural approach based on an ADALINE for online adaptation of the cut-off frequency of the DD-STF and M-STF considering a possible variation in the main frequency. The main advantage of this method is its immunity to the voltage signal amplitude and phase. In order to improve the performance of the frequency estimation under distorted source voltage, a pre-filtering stage is introduced. Experimental tests validate the proposed method and illustrate all its interesting features. Results show high performance and robustness of the method under low voltage ride through.","PeriodicalId":42365,"journal":{"name":"Electrical Control and Communication Engineering","volume":"17 1","pages":"47 - 58"},"PeriodicalIF":0.7,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43069563","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

Use of Simulator Equipment for the Development and Testing of Vessel Control Systems 模拟器设备在船舶控制系统开发和测试中的应用

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Electrical Control and Communication Engineering Pub Date : 2020-12-01 DOI: 10.2478/ecce-2020-0009

S. Zinchenko, V. Mateichuk, P. Nosov, I. S. Popovych, O. Solovey, P. Mamenko, O. Grosheva

{"title":"Use of Simulator Equipment for the Development and Testing of Vessel Control Systems","authors":"S. Zinchenko, V. Mateichuk, P. Nosov, I. S. Popovych, O. Solovey, P. Mamenko, O. Grosheva","doi":"10.2478/ecce-2020-0009","DOIUrl":"https://doi.org/10.2478/ecce-2020-0009","url":null,"abstract":"Abstract One of the ways to reduce human influence on the control process is the development of automated and automatic control systems. Modern control systems are quite complex and require preliminary ground testing. The article considers the issues of creating Imitation Modelling Stand for such control system synthesis and testing. For this reason, a Control System Model was integrated into the local computer network of the navigation simulator NTPRO 5000. The authors of the paper developed and tested software for information exchange between the navigation simulator and the Control System Model. The authors also developed a functional module of collision avoidance with many targets for testing in a closed loop system with virtual training objects. The results showed that the developed Imitation Modelling Stand allowed developing and testing functional modules of the control systems. In comparison with the found analogues, it is easy to include in a closed simulation cycle various models of command devices, actuators, control objects, objects of training scene, weather conditions; it is universal both for solving problems of manual control and for developing and testing automatic and automated control systems; it is not highly specialised and is created at minimal costs.","PeriodicalId":42365,"journal":{"name":"Electrical Control and Communication Engineering","volume":"16 1","pages":"58 - 64"},"PeriodicalIF":0.7,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47868584","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: 17