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2017 International Seminar on Intelligent Technology and Its Applications (ISITIA)最新文献

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Design and analysis of DC/AC inverter using passive LCL filter with damping circuit configuration 无源LCL滤波器带阻尼电路配置的直流/交流逆变器设计与分析
Pub Date : 2017-11-23 DOI: 10.1109/ISITIA.2017.8124053
Faizal Arya Samman, M. Hasan, T. Damayanti
This paper presents the study and analysis on the impacts of the insertion of a damper circuit in an LCL passive filter utilized to filter DC/AC inverter's output voltage. The damper is used to reduce peak resonance on its frequency response curves. The existing resonance frequency can make the filtered inverter output voltage become weak and unstable. One of existing solutions to overcome this problem is proposed by using of a damping resistor. Damping method can be applied using various configurations. However, this paper only discussed two damping configurations, namely series and parallel damping configuration. We use three criteria to analyze the impacts of the damper circuits, i.e. its capability of reducing total harmonic distortions (THDs), to maintain the output voltage and to improve output power of the inverter. Theoretically, the damper can reduce its peak resonance frequency. However, in any circumstance, it can potentially reduce the inverter's power, voltage output amplitude, and cannot improve its THD reduction.
本文对用于滤波直流/交流逆变器输出电压的LCL无源滤波器中插入阻尼电路的影响进行了研究和分析。阻尼器用于降低其频率响应曲线上的峰值共振。现有的谐振频率会使滤波后的逆变器输出电压变弱而不稳定。现有的解决方案之一是利用阻尼电阻来克服这一问题。阻尼法可应用于各种配置。然而,本文只讨论了两种阻尼配置,即串联和并联阻尼配置。我们使用三个标准来分析阻尼器电路的影响,即其降低总谐波失真(THDs)的能力,保持输出电压和提高逆变器的输出功率。理论上,阻尼器可以降低其峰值共振频率。然而,在任何情况下,它都有可能降低逆变器的功率、电压输出幅值,而不能提高其THD降频。
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引用次数: 7
Real time DNS traffic profiling enhanced detection design for national level network 实时DNS流量分析增强的国家级网络检测设计
Pub Date : 2017-08-01 DOI: 10.1109/ISITIA.2017.8124046
Muhammad Salahuddien Manggalanny, K. Ramli
A recent study shows, an investigation of Advanced Persistent Threat (APT) activity can be done effectively through malicious DNS traffic analysis. But, most of the experiments are conducted in a limited, simulated environment e.g. small campus network. Since APT is very dynamic and to address traffic grows, a light weight computation architecture is then needed to profile suspected activity in near real time. In this study, we proposed an enhanced design to detect malicious DNS traffic for high speed, large scale, national level, near real time network. This experiment combines available open source solution tools in order to gain real time, better accuracy of anomaly recognition and faster detection.
最近的一项研究表明,通过恶意DNS流量分析可以有效地调查高级持续威胁(APT)活动。但是,大多数实验都是在有限的模拟环境中进行的,例如小型校园网。由于APT是非常动态的,并且要处理流量的增长,因此需要一个轻量级的计算架构来近乎实时地分析可疑活动。在本研究中,我们提出了一种针对高速、大规模、国家级、近实时网络的恶意DNS流量检测的增强设计。本实验结合了现有的开源解决方案工具,以获得实时性、更高的异常识别精度和更快的检测速度。
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引用次数: 3
Analysis of physical and electrical characteristics of transformer oil insulation during accelerated thermal aging experiment and its lifetime estimation using arrhenius law and breakdown voltage test 加速热老化试验中变压器油绝缘的物理和电气特性分析及用阿伦尼乌斯定律和击穿电压试验估算其寿命
Pub Date : 2017-08-01 DOI: 10.1109/ISITIA.2017.8124069
I. M. Y. Negara, N. K. Aryani, D. A. Asfani, D. Fahmi, Rifqi Jauhari, M. Wahyudi
In this paper, the physical and electrical characteristics of accelerated thermal aged transformer oil insulation were investigated. The accelerated thermal aging of commercial transformer oil was conducted by increasing its temperature with different time. They were 100°C for 168 hours, 115°C for 96 hours, and 125°C for 48 hours. The lifetime of the tested oil was then estimated based on Arrhenius law and breakdown voltage test. The result showed that the physical characteristic of the tested oil during accelerated thermal aging could be analyzed based on its color changes, in which the higher level of thermal aging resulted in darker oil's color. The electrical characteristic was associated with significant decreasing of breakdown voltage. The lifetime estimation based on Arrhenius law for the tested oil with 100°C, 115°C, and 125°C were about 25663 hours, 4300 hours, and 1408 hours, respectively. The lifetime estimation based on breakdown voltage test for the tested oil with 100°C, 115°C, and 125°C were about 20064 hours, 1526 hours, and 1106 hours, respectively.
本文研究了加速热老化变压器油绝缘的物理和电气特性。通过不同时间提高变压器油的温度,加速变压器油的热老化。分别为100°C 168小时,115°C 96小时,125°C 48小时。然后根据阿伦尼乌斯定律和击穿电压试验估计了被试油的寿命。结果表明,通过油的颜色变化可以分析油在加速热老化过程中的物理特性,热老化程度越高,油的颜色越深。电学特性与击穿电压的显著降低有关。在100°C、115°C和125°C条件下,根据Arrhenius定律估计的油的寿命分别为25663小时、4300小时和1408小时。在100°C、115°C和125°C条件下,基于击穿电压试验的寿命估计分别为20064小时、1526小时和1106小时。
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引用次数: 4
Analysis of quality network using MPLS and non MPLS 使用MPLS和非MPLS的质量网络分析
Pub Date : 2017-08-01 DOI: 10.1109/ISITIA.2017.8124044
B. Soewito, F. Gunawan, S. Afdhal, A. Antonyova
The use of the Internet has become very important in our daily life. Therefore, the quality of the network is becomes very important. There are several protocol and technology in the Internet network. In this paper we analyzed Multi-Protocol Label Switching (MPLS) compared to Non MPLS. We compared the throughput, packet loss, and Jitter. We used the tools such as Iperf, Wireshark and routing table to do simulation and take the data. The result show the MPLS technology has better result compared to Non MPLS. The throughput is 82.5 Mbit/sec compared to 70 Mbit/sec. The packet loss is 0.4% compared to 1%. Both of technology had the jitter less than 50 ms. We concluded that quality network using MPLS can be increase compared to Non MPLS.
互联网的使用在我们的日常生活中变得非常重要。因此,网络的质量就变得非常重要。Internet网络中有多种协议和技术。本文对多协议标签交换(MPLS)与非MPLS进行了比较分析。我们比较了吞吐量、数据包丢失和抖动。我们使用Iperf、Wireshark、路由表等工具进行仿真并获取数据。结果表明,与非MPLS技术相比,MPLS技术具有更好的性能。吞吐量是82.5 Mbit/sec,而不是70 Mbit/sec。丢包率从1%降低到0.4%。两种技术的抖动都小于50毫秒。结果表明,与非MPLS相比,使用MPLS可以提高网络质量。
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引用次数: 2
Urban distribution CCTV for smart city using decision tree methods 基于决策树方法的智慧城市CCTV城市分布
Pub Date : 2017-08-01 DOI: 10.1109/ISITIA.2017.8124048
Arif Pribadi, F. Kumiawan, M. Hariadi, S. M. S. Nugroho
Supervision is important in the application of Smart City. Closed-Circuit Television (CCTV) is one of the main tools of Smart City surveillance. Some CCTVs connected with Information and Communication Technology (ICT) form Smart Monitoring. In order to support Smart Mobility, CCTV is installed to monitor road conditions. The problem is the installation of CCTV which is not always appropriate with the location conditions. Consequently situations such as road density, accidents, crime can not be monitored optimally. This research aims to find the relation of type CCTV camera with location placement. Classification technology is used to construct predictive models. Using the Decision Tree algorithm obtained an accuracy of the prediction model is 87.96%.
在智慧城市的应用中,监管是非常重要的。闭路电视(CCTV)是智慧城市监控的主要工具之一。一些与信息通信技术(ICT)连接的cctv形成了智能监控。为了支持智能交通,安装了闭路电视来监控路况。问题是闭路电视的安装并不总是与位置条件相适应。因此,道路密度、事故、犯罪等情况无法得到最佳监控。本研究旨在找出CCTV摄像机类型与位置放置的关系。采用分类技术构建预测模型。利用决策树算法得到的预测模型准确率为87.96%。
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引用次数: 7
MPPT design on solar farm using perturb and observe technique considering tilt angle and partial shading in Giligenting Island 考虑倾斜角度和部分遮阳的扰动观测技术在吉利丁岛太阳能发电场的MPPT设计
Pub Date : 2017-08-01 DOI: 10.1109/ISITIA.2017.8124084
Soedibyo, Sjamsjul Anam, I. Hafidz, Gusti Rinaldi Zulkarnain, M. Ashari
Giligenting Island is located in Sumenep, Madura. It is very potential for application the renewable energy. Based on the measurement, the maximum potential irradiance solar farm in the Island is accounted 610 W/m2. To convert the irradiance power to electricity, photovoltaic is applied. However, photovoltaic modules are drastically decrease their power output in case of the partial shading conditions. Therefore, perturb and obverse method (PnO) is introduced to track the point to establish the maximum power. In addition, the maximum power point tracking (MPPT) is employed to reduce the shading effects, thus by both method, the power generated is maximum. Besides, this technique is able to overcome the limitations in tracking efficiency, oscillation in steady state, and transient period. In this paper to maximize the irradiance observation, optimal site selection is undertaken by considering the tilt angles of PV and by approaching a sun path diagram model. Based on this study and experiment that have been taken in Giligenting Island, it is summed up that the proposed MPPT algorithm is superior to P&O technique with varies partial shading conditions. The results of the simulation yield that the power output of photovoltaic cover 99.4% of the load demand in Giligenting Island.
吉利丁岛位于马杜罗的苏梅内普。可再生能源具有很大的应用潜力。根据测量,岛上太阳能发电场的最大潜在辐照度为610 W/m2。为了将辐照功率转换为电能,采用了光伏发电。然而,在部分遮阳条件下,光伏组件的输出功率大大降低。为此,引入摄动逆法(PnO)来跟踪点以确定最大功率。此外,采用最大功率点跟踪(MPPT)来减少遮阳效果,因此两种方法产生的功率都是最大的。此外,该技术还能克服跟踪效率、稳态振荡和瞬态时间等方面的限制。为了最大限度地实现辐照度观测,本文考虑PV的倾角,采用太阳路径图模型进行最优选址。基于本研究和在吉利根亭岛的实验,总结出在不同的部分遮阳条件下,MPPT算法优于P&O技术。仿真结果表明,光伏发电输出功率满足了吉利根亭岛99.4%的负荷需求。
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引用次数: 3
Performance comparison between tracking and fixed photovoltaic system: A case study of Hoa Lac Hi-tech Park, Hanoi 跟踪与固定光伏系统的性能比较——以河内市华乐高科技园区为例
Pub Date : 2017-08-01 DOI: 10.1109/ISITIA.2017.8124067
X. Nguyen, V. Nguyen, Dinh-Quang Nguyen, Lang-Tung Nguyen, Duc-Quang Nguyen
Vietnam has declared its first official support mechanisms for the development of solar power projects by the Decision 11/2017/QD-TTg, officially signed by the Prime Minister of Vietnam in April 2017. The Decision creates a legal framework for solar energy market and promotes solar electricity development in Vietnam. Since 2016, Energy Department of the University of Science and Technology of Hanoi has been implementing a 15 kWp grid-connected photovoltaic (PV) system in Hanoi. The PV array performance is mostly influenced by its tilt angle, orientation, climatic conditions and geographic location. From simulated results, this paper aims to evaluate the performance comparison between a PV automatic tracking system and a PV fixed mounting system on identical PV arrays with the same rated powers in a one-year period, under similar environmental conditions and installed location. Firstly, the architectural design of the entire system is going to be described. Next, the energy outputs of the fixed and tracking system are analyzed by using the PVsyst software as a simulation tool [1]. This work examines the maximum performance of the PV output during the early stage of the system design by adjusting the optimum titled angle of the PV modules monthly, seasonal and yearly for non-tracking PV arrays. Then, the results are compared with the performance of automatic tracking systems. The study confirmed that the automatic single North-South axis tracker, which continuously tracks the sun from East to West, is the most suitable for PV system at Hoa Lac Hi-tech Park in the north of Vietnam, in the tropical zone.
越南总理于2017年4月正式签署了第11/2017/QD-TTg号决定,宣布了越南首个太阳能项目发展的官方支持机制。该决定为太阳能市场创造了法律框架,促进了越南太阳能电力的发展。自2016年以来,河内科技大学能源系一直在河内实施15 kWp的并网光伏(PV)系统。光伏阵列的性能主要受其倾斜角度、朝向、气候条件和地理位置的影响。从仿真结果出发,在相同的光伏阵列、相同的额定功率下,在相似的环境条件和安装位置下,评估光伏自动跟踪系统与光伏固定安装系统在一年周期内的性能对比。首先,对整个系统的体系结构设计进行了描述。接下来,利用PVsyst软件作为仿真工具[1],对固定和跟踪系统的能量输出进行了分析。本研究通过每月、季节性和每年调整非跟踪光伏阵列的光伏模块的最佳标题角度,在系统设计的早期阶段检查光伏输出的最大性能。然后,将结果与自动跟踪系统的性能进行了比较。该研究证实,自动单南北轴跟踪器,连续跟踪太阳从东到西,是最适合的光伏系统在越南北部的和拉高科技园区,在热带地区。
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引用次数: 7
Expert system for diagnosis pests and diseases of the rice plant using forward chaining and certainty factor method 采用前链法和确定性因子法的水稻病虫害诊断专家系统
Pub Date : 2017-08-01 DOI: 10.1109/ISITIA.2017.8124092
Erlina Agustina, I. Pratomo, A. Wibawa, Sri Rahayu
Pests and diseases are one of the main factors that affect the low level of rice plant productivity. The symptoms in the infected rice plant are sometimes difficult to identify because they often shows the similar signs or characteristics so that only the experts who can identity them correctly. The infected rice plant actually can be identified since the beginning stage of planting until harvest time. So by knowing the symptoms in the early stage of the rice plant growth some preventif actions then can be done. Identifying pests and diseases of rice plant needs skills, experiences, and knowledge and should be done fast and accurate because the pests and diseases of rice plant can spread quickly and attack at all area of agriculture land. Since the number of experts in the pests and diseases of rice plant is limited, especially in a remote area, expert system then can be a smart solution for replacing the extensionist to decide what kind of pests or diseases that have attacked the rice plant. This paper presents a design and implementation of an expert system based on web application for diagnozing pests and diseases of the rice plant so that support system then still can be performed to provide the farmers with a correct decision. The knowledge representation model in this study used production rule and forward chaining based on symptoms or characteristics from attacked rice plant. The certainty factors method was used to define the expert confidence level for each symptom. This expert system testing was done by 15 person of non-extensionist of agriculture and 20 person of agriculture extensionist for observing 12 sample of images of the infected rice plant. The testing result showed that the accuracy level of this system is 73,81%. Meaning that this expert system can help farmers determining the pests or diseases of rice plant.
病虫害是影响水稻生产力低下的主要因素之一。受感染水稻植株的症状有时难以识别,因为它们往往表现出相似的迹象或特征,因此只有能够正确识别它们的专家。受感染的水稻植株实际上可以从种植开始阶段直到收获时被识别出来。因此,通过了解水稻生长早期的症状,可以采取一些预防措施。水稻病虫害的识别需要技术、经验和知识,而且由于水稻病虫害的传播速度快,可以在农业用地的所有区域进行攻击,因此需要快速准确地进行识别。由于水稻病虫害专家的数量有限,特别是在偏远地区,专家系统可以代替推广人员来确定哪些病虫害袭击了水稻植株,这是一个智能的解决方案。本文提出了一个基于web应用的水稻病虫害诊断专家系统的设计与实现,以便为农户提供正确的决策支持系统。本研究的知识表示模型采用生产规则和基于病稻症状或特征的正向链。采用确定性因子法确定每个症状的专家置信度。该专家系统测试由15名非农业推广人员和20名农业推广人员对12个受感染水稻植株的图像样本进行观察。测试结果表明,该系统的准确率为73.81%。这意味着这个专家系统可以帮助农民确定水稻的病虫害。
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引用次数: 23
Path planning mobile robot using waypoint for gas level mapping 路径规划移动机器人使用路径点进行气位映射
Pub Date : 2017-08-01 DOI: 10.1109/ISITIA.2017.8124088
Richa Watiasih, M. Rivai, R. A. Wibowo, O. Penangsang
The study implemented the path planning mobile robot equipped with a Global Positioning System and a gas sensor for mapping activities to detect the harmful gases in a certain location. The mobile robot was moving to some high risk places exposed to some dangerous gases on the path planning by using the waypoint. Proportional Integral Derivative controller was used to control the differential speed steering mobile robot. The experimental results showed that the average compass error was about 5% and the GPS error in navigating the waypoint was about 3 meters. Wind direction and speed exceeding 5 km/h affected the value of gas concentration reading. The system has deviation distance of less than 5 meters in following the route of the waypoint providing the information of gas levels during the trip as a source of information map.
该研究实现了路径规划移动机器人,该机器人配备了全球定位系统和用于测绘活动的气体传感器,以检测特定位置的有害气体。移动机器人在路径规划中利用航路点向暴露于危险气体的高风险场所移动。采用比例积分导数控制器对差动速度转向移动机器人进行控制。实验结果表明,该航路点的平均罗盘误差约为5%,GPS导航误差约为3米。风向和风速超过5 km/h影响气体浓度读数值。系统沿航路点路线的偏差距离小于5米,提供行程中气体液位信息作为信息地图的来源。
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引用次数: 14
Linearization and decoupling controller for quadruple tank 四缸线性化解耦控制器
Pub Date : 2017-08-01 DOI: 10.1109/ISITIA.2017.8124086
A. K. R. Effendi, M. Rameli, E. Iskandar, Muhammad Baihaqi
Quadruple Tank Process (QTP) is a nonlinear system that has four state variables in the form of a level of four tanks with two inputs of flow discharge. In addition to the non-linearity, each state on the QTP dynamics is coupled, and the level sensor is only installed on two tanks to be set, this adds to its complex QTP control issues. By performing the linearity using Nonlinear State Feedback Decoupling (NSFD) method, we can establish a closed loop system that is linear and meets specific response specifications in accordance with the desired design specifications. Since NSFD requires measurements of all states, it is necessary to add a Non-Linear State Observer (NLSO) so that the other two states can be observed from two measured states. By specifying time response design in the form of time constants T1 = 4 seconds, and T2 = 4 seconds for tank one and tank two respectively, and installing a 1st order low pass filter with time constants t = 0.2 second for Cross Coupled Error Feedback (CCEF) on NLSO, then we can obtain a simulation result that meets the specification of the desired transient response.
四罐过程(QTP)是一个具有四个状态变量的非线性系统,其形式为四个罐的液位和两个流量输入。除了非线性之外,QTP动力学上的每个状态是耦合的,并且液位传感器只安装在两个待设置的水箱上,这增加了其复杂的QTP控制问题。采用非线性状态反馈解耦(NSFD)方法进行线性化处理,可以根据设计要求建立满足特定响应规范的线性闭环系统。由于NSFD需要测量所有状态,因此有必要添加非线性状态观测器(NLSO),以便从两个测量状态中观察到其他两个状态。通过对罐1和罐2分别指定时间常数T1 = 4秒和T2 = 4秒的时间响应设计,并在NLSO上安装时间常数t = 0.2秒的一阶低通滤波器进行交叉耦合误差反馈(CCEF),可以得到满足期望瞬态响应规范的仿真结果。
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引用次数: 5
期刊
2017 International Seminar on Intelligent Technology and Its Applications (ISITIA)
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