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2017 International Conference on System Science and Engineering (ICSSE)最新文献

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Design and simulate a Fuzzy autopilot for an Unmanned Surface Vessel 设计并仿真无人水面舰艇模糊自动驾驶仪
Pub Date : 2017-12-07 DOI: 10.1007/978-3-319-69814-4_74
Nhat Minh Do, P. Nguyen, D. Nguyễn
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引用次数: 7
Analysis of voltage-variation results of Taiwan Power System connected with a ring-type high-capacity offshore wind farm 台湾电力系统接环式大容量海上风电场电压变化结果分析
Pub Date : 2017-09-08 DOI: 10.1109/ICSSE.2017.8030852
Li Wang, Quang-Son Vo, M. Hsieh, Cheng-Tai Wu, Chieh-Lung Lu, Bing-Lin Kuan, Xiu-Yu Lu, A. Prokhorov
This paper presents the voltage-variation results at the point of common coupling (PCC) when a high-capacity doubly-fed induction generator (DFIG)-based offshore wind farm (OWF) of 403.2 MW or 288 MW is connected to different buses of the neighboring onshore substation of Taiwan Power System through three or two submarine cables and underground cables. The voltage variations at the PCC under different lengths of submarine cable and various capacities of the studied OWF are also compared. A commercial power-system simulation software of PSS/E is utilized to simulate the voltage-variation results at PCC when the studied OWF with different capacities is connected to one of the selected buses under different lengths of submarine cable. It can be concluded from the simulation results that some buses with strong (weak) strength can exhibit smaller (larger) values on voltage variation at PCC after the studied OWF is connected to Taiwan Power System.
本文介绍了403.2 MW或288 MW大容量双馈感应发电机(DFIG)海上风电场(OWF)通过三根或两根海底电缆和地下电缆与相邻台湾电力系统陆上变电站的不同母线连接时,共耦合点电压变化的结果。比较了不同长度的海底电缆和不同容量的OWF在PCC处的电压变化。利用PSS/E商用电力系统仿真软件,对所研究的不同容量的OWF在不同长度海底电缆下连接到所选母线之一时PCC处的电压变化结果进行仿真。从仿真结果可以看出,所研究的OWF接入台湾电力系统后,一些强度较强(弱)的母线在PCC处的电压变化值较小(较大)。
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引用次数: 1
An approach to the automatic detection of weld defects in radiography films using digital image processing 利用数字图像处理技术实现射线照相胶片焊缝缺陷的自动检测
Pub Date : 2017-07-21 DOI: 10.1109/ICSSE.2017.8030899
Ngon Dang Thien, C. L. Chi, Ha Nguyen Ngoc
Oil refinery industry is using large amount of radiographic films of weld defects, requiring human work by technicians to interpretation. This paper presents a method and automated system for determination of weld defect from radiographic films by using the image processing technique. The hardware and software system rapidly and automatically convert the radiographic films into digital images, then analyzes and compares with the digitalized radiographic images database. The probable defects and its type recognized defect are determined. This approach will be significant in developing a professional system for partially replacing technician work in image interpretation, ensuring quality and productivity in welding manufacturing technology.
石油炼制行业使用大量的射线照相底片对焊缝缺陷进行检测,需要技术人员进行人工解读。本文介绍了一种利用图像处理技术测定射线照相胶片焊缝缺陷的方法和自动化系统。硬件和软件系统快速自动地将胶片转换成数字图像,然后与数字化的射线图像数据库进行分析和比较。确定可能存在的缺陷及其识别缺陷的类型。这种方法对于开发一个专业系统来部分取代图像解释中的技术人员工作,确保焊接制造技术的质量和生产率具有重要意义。
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引用次数: 9
Emergency control of load shedding based on coordination of artificial neural network and Analytic Hierarchy Process Algorithm 基于人工神经网络和层次分析法的应急减载控制
Pub Date : 2017-07-21 DOI: 10.1109/ICSSE.2017.8030837
T. N. Le, N. A. Nguyen, H. Quyen
This paper proposed a new emergency control of load shedding model to ensure sustained power system stability when short circuit incidents occur based on the basis of coordination algorithms applied technology knowledge: K-means clustering, artificial neural network and analytic hierarchy process algorithms. This is a load shedding model allowing to make quick decisions of strategy selection, to reduce the decision time, to recovery time and to improve frequency stability compared to traditional methods. The main purpose of the presented coordinated control system is to reduce the recovery time and maintain dynamic stability of power systems. K-means clustering algorithm divided instability mode into clusters. The results of analysis of these clusters were used as the basis for classification control. Load shedding strategies were built consists of pre-designed rules based on AHP algorithm. The load shedding was considered to cut the less important factor loads first for contributing to reduce the damages. The effectiveness of the algorithm was demonstrated through the load shedding experiment on IEEE 39 bus 10 generators compared with traditional methods.
本文在k均值聚类、人工神经网络和层次分析法等协调算法应用技术知识的基础上,提出了一种新的应急减载控制模型,以保证电力系统在发生短路事件时的持续稳定。与传统方法相比,这是一种允许快速决策策略选择的减载模型,可以减少决策时间,恢复时间并提高频率稳定性。本文提出的协调控制系统的主要目的是减少电力系统的恢复时间,保持电力系统的动态稳定。K-means聚类算法将不稳定模式划分为簇。这些聚类的分析结果作为分类控制的依据。基于AHP算法,构建了由预先设计好的规则组成的减载策略。减载是指首先削减不太重要的因素负荷,从而有助于减少损伤。通过IEEE 39总线10发电机的减载实验,与传统方法进行了比较,验证了该算法的有效性。
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引用次数: 8
Analytical design of PID controller for enhancing ride comfort of active vehicle suspension system 提高车辆主动悬架平顺性的PID控制器解析设计
Pub Date : 2017-07-21 DOI: 10.1109/ICSSE.2017.8030886
Truong Nguyen Luan Vu, Do Van Dung, N. V. Trang, P. T. Hai
In this paper, a new design of proportional-integral-derivative (PID) controller for the active vehicle suspension system (AVSS) of a quarter car model is proposed on the basis of the well-known Internal Model Control (IMC) theory in order to compromise the two conflicting criteria between the passenger ride comfort and road handling. By using the given mathematical ordinary differential equations (ODEs) and state-space matrix expression in t-domain via the kinematic and dynamic of a quarter two degrees of freedom model, the transfer function is firstly established for its model and the proposed AVSS based PID control is then systematically introduced for enhancing the ride comfort. Moreover, the computer simulation model of the passive and active suspension systems is established for the purpose of having a fair comparison. A various kinds of the road input signals are selected for testing the systems, such as unit step, sine wave, and white noise signals. The simulation results indicate that the performance of proposed AVSS has the significantly improved in terms of reducing the peak overshoot of sprung mass displacement and sprung mass acceleration in compared with the other traditional passive suspension systems.
针对四分之一汽车主动悬架系统(AVSS),基于内模控制(IMC)理论,提出了一种新的比例-积分-导数(PID)控制器设计,以折衷乘客乘坐舒适性和道路操控性这两个相互冲突的准则。利用给定的数学常微分方程(ODEs)和t域状态空间矩阵表达式,通过四分之一二自由度模型的运动学和动力学,首先建立了模型的传递函数,然后系统地介绍了基于AVSS的PID控制,以提高平顺性。并建立了被动悬架与主动悬架的计算机仿真模型,以便进行比较。选择各种道路输入信号进行系统测试,如单位阶跃信号、正弦波信号和白噪声信号。仿真结果表明,与其他传统被动悬架系统相比,该系统在减小簧载质量位移和簧载质量加速度峰值超调量方面有显著改善。
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引用次数: 5
Determining the effects of marketing mix on customers' purchase decision using the grey model GM(0,N) - case study of the western style coffeehouse chains in Vietnam 利用灰色模型GM(0,N)确定营销组合对顾客购买决策的影响——以越南西式咖啡连锁店为例
Pub Date : 2017-07-21 DOI: 10.1109/ICSSE.2017.8030940
Y. Chai, Ying-Fang Huang, Hoang-Sa Dang
Western style of coffeehouse chain presents a new market trend for beverage business industry with more opportunities and challenges in Vietnam. However, consideration of the Vietnamese consumer perception on this issue has not been introduced in the scholarly study yet as our knowledges. Thus, this study aims at utilizing the questionnaire approach to obtain the consumers' information, and then, the grey model GM(0,N) is applied to determine the major factors of marketing mix impact on Vietnamese's purchase decision who was serviced at western style coffeehouse chains. Based on the data from 176 valid questionnaires among of 220 responses, the results indicated that, five elements of marketing mix significantly impacted to the consumer decision on purchasing coffee beverages. Among them, promotions and products have been evaluated as the crucial factors which factor weightings are 0.3571 and 0.3041, respectively. Follow by, the price (0.1387), place (0.1254) and people (0.0791). This study found that Vietnamese consumers take more considerations on promotions activities and the taste of coffee beverages when purchasing coffee beverages in western style of coffeehouse chains. In spite of that products of coffee beverages with good taste and reasonable price can make consumers have a high level satisfaction and confidence to purchase.
西式连锁咖啡为越南饮料行业提供了新的市场趋势,带来了更多的机遇和挑战。然而,据我们所知,越南消费者对这一问题的看法尚未在学术研究中引入。因此,本研究旨在利用问卷调查法获取消费者信息,然后应用灰色模型GM(0,N)来确定营销组合对在西式连锁咖啡馆服务的越南人购买决策的主要影响因素。基于220份有效问卷中的176份数据,结果表明,营销组合的五个要素对消费者购买咖啡饮料的决策有显著影响。其中,促销和产品被评价为关键因素,因子权重分别为0.3571和0.3041。其次是价格(0.1387),地点(0.1254)和人(0.0791)。本研究发现,越南消费者在西式咖啡连锁店购买咖啡饮料时,更多考虑的是促销活动和咖啡饮料的味道。尽管如此,口味好、价格合理的咖啡饮料产品能让消费者有很高的满意度和购买信心。
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引用次数: 4
Edge detection based on Fuzzy C Means in medical image processing system 基于模糊C均值的医学图像处理系统边缘检测
Pub Date : 2017-07-21 DOI: 10.1109/ICSSE.2017.8030827
Nguyen Mong Hien, N. Binh, Ngo Quoc Viet
In the modern life, people often face a few dangerous diseases, the time is considered as gold. Therefore, the survival of patients depends on whether the doctor is right or wrong in diagnosis. While the edges of object in magnetic resonance image (MRI) are important clues, which can make doctors know the problems. In real life, medical images often have low quality, so to find the object boundaries in images is not an easy task. In this paper, a new approach to MRI edge detection issue is shown. Our proposed method includes three stages. Firstly, using the Semi Translation Invariant Contourlet Transform (STICT) to improve quality of the original MRI. Secondly, the result of first stage is subjected to image segmentation by using Fuzzy C Means (FCM) clustering method. Finally, Canny edge detection method is applied to detect the fine edges. The proposed method is better than the other recent methods based on compared results.
在现代生活中,人们经常面临一些危险的疾病,时间被认为是黄金。因此,患者的生存取决于医生的诊断是对还是错。而磁共振成像(MRI)中物体的边缘是重要的线索,可以让医生了解问题所在。在现实生活中,医学图像的质量往往很低,因此在图像中找到物体边界并不是一件容易的事情。本文提出了一种新的MRI边缘检测方法。我们提出的方法包括三个阶段。首先,利用半平移不变轮廓波变换(STICT)提高原始MRI图像的质量。其次,利用模糊C均值(FCM)聚类方法对第一阶段的结果进行图像分割;最后,采用Canny边缘检测方法检测精细边缘。对比结果表明,该方法优于现有的几种方法。
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引用次数: 15
Active disturbance rejection control design for integrated guidance and control missile based SMC and extended state observer 基于SMC和扩展状态观测器的综合制导导弹自抗扰控制设计
Pub Date : 2017-07-21 DOI: 10.1109/ICSSE.2017.8030920
Hong Toan Dinh, D. K. Truong, Tran Hiep Nguyen, Xuan-Tung Truong, C. D. Nguyen
This paper presents an active disturbance rejection rejection control design for integrated guidance and control missile based on sliding mode control and extended state observer. The integrated model is formulated as a block-strict-feedback nonlinear system, in which modeling errors, unmodeled non-linearities, target maneuvers, etc. are viewed as unknown uncertainties. The nonlinear control law is designed based on backstepping and sliding mode control (SMC) techniques. Based on the principle of active disturbance rejection control (ADRC), enhanced feedback linearization (FL) based control law is implemented for the IGC model using the estimates generated by an extended state observer (ESO). The stability analysis of the closed-loop system is also conducted. Simulation results show that, small miss distances and smooth missile trajectories are achieved, and the system is robust against system uncertainties and external disturbances.
提出了一种基于滑模控制和扩展状态观测器的综合制导导弹自抗扰控制设计方法。集成模型被表述为一个块严格反馈非线性系统,其中建模误差、未建模非线性、目标机动等都被视为未知的不确定性。基于反步和滑模控制(SMC)技术设计了非线性控制律。基于自抗扰控制(ADRC)原理,利用扩展状态观测器(ESO)产生的估计对IGC模型实现了基于增强反馈线性化(FL)的控制律。对闭环系统进行了稳定性分析。仿真结果表明,该系统具有较小的脱靶距离和平滑的弹道,对系统不确定性和外部干扰具有较强的鲁棒性。
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引用次数: 4
An effective video-based model for fall monitoring of the elderly 一种有效的基于视频的老年人跌倒监测模型
Pub Date : 2017-07-21 DOI: 10.1109/ICSSE.2017.8030835
Hoang Le Uyen Thuc, P. Tuan, Jenq-Neng Hwang
Fall is one of the major health challenges facing the elderly adults, especially the adults with high fall risk factors. In this paper, we aim to build a video-based model to mitigate the consequences of fall of the elderly at two application scenarios: (1) predict the fall risk caused by unbalanced gait and (2) detect a fall event as soon as it happens. In the first stage, we use a common camera to capture the video of a person moving such as doing actions or walking. In the second stage, our proposed model for both scenarios follows the same three-module structure: (1) human object segmentation using background subtraction, (2) feature representation using two separate feature descriptors, one for each application scenario, and (3) abnormal event detection based on Hidden Markov Model. The final stage is to convey an SMS message to the pre-defined cell phone number to notify the caregiver of detected anomaly. Experimental results show the promising performance of the proposed model in terms of the acceptable accuracy and the low processing time.
跌倒是老年人面临的主要健康挑战之一,尤其是有较高跌倒危险因素的成年人。在本文中,我们的目标是建立一个基于视频的模型,以减轻老年人跌倒的后果,在两种应用场景下:(1)预测步态不平衡引起的跌倒风险(2)在跌倒事件发生时及时检测。在第一阶段,我们使用一个普通的摄像机来捕捉一个人移动的视频,比如做动作或走路。在第二阶段,我们提出的两种场景的模型遵循相同的三模块结构:(1)使用背景减法进行人体目标分割,(2)使用两个独立的特征描述符表示特征,每个应用场景一个特征描述符,以及(3)基于隐马尔可夫模型的异常事件检测。最后一个阶段是将SMS消息发送到预定义的手机号码,以通知护理人员检测到的异常。实验结果表明,该模型具有较好的精度和较低的处理时间。
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引用次数: 10
A neural control of the parallel Gas Turbine with differential link 带差动连杆并联燃气轮机的神经控制
Pub Date : 2017-07-21 DOI: 10.1109/ICSSE.2017.8030843
N. H. Mai
Gas turbine engine has the highest performance in the engine rotation. The performance of the types of modern gas turbines could able up to 44%. In specific applications, gas turbines are used for equipment such as electrical generators, aircraft engines, high-speed boat … The applications of gas turbine are used to transmit turbine, cabinet pull in eneral[3],[5],[6],[9],[10],[12],[15]. However, there have been no published works on the use of dual turbine. This paper presents an artificial neural network controller to control Double Differential Gas Turbine (DDGT) by use algorithm to synchronize the speed of two turbines at each variable turbine load to reduce low power balance in the system. From the Rowen's model of control for a turbine, the author analyzed and combined with the existing model to construct a dual turbine combinatorial structure coupled by differential coupling. Model-driven control algorithms are used as training grounds for artificial neural networks (ANNs) to replace traditional PID controllers. Because the double tubine construction is strong nonlinear system, modeling is directly transformed from the object model. Simulation results for a dual-turbine twin-turbine combination of 32MW, demonstrating the suitability of the theory. Simulation results show that ANN can be deployed into practice to replace PID controllers to increase control accuracy.
燃气涡轮发动机在发动机旋转中具有最高的性能。现代燃气轮机的性能可达44%。在具体应用中,燃气轮机用于发电机、飞机发动机、高速艇等设备,燃气轮机的应用一般用于传递涡轮、机柜拉力[3]、[5]、[6]、[9]、[10]、[12]、[15]。然而,目前还没有关于双涡轮使用的出版作品。本文提出了一种人工神经网络控制双差式燃气轮机(DDGT)的方法,采用算法同步各变负荷下两台燃气轮机的转速,以减少系统中的低功率平衡。从汽轮机的Rowen控制模型出发,分析并结合已有的模型,构建了采用微分耦合耦合的双汽轮机组合结构。模型驱动控制算法被用作人工神经网络(ann)的训练基础,以取代传统的PID控制器。由于双水轮机结构是强非线性系统,直接由对象模型进行建模。对32MW双机机组进行了仿真,验证了该理论的适用性。仿真结果表明,人工神经网络可以应用于实际,以取代PID控制器,提高控制精度。
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引用次数: 0
期刊
2017 International Conference on System Science and Engineering (ICSSE)
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