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2018 6th International Conference on Control Engineering & Information Technology (CEIT)最新文献

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Robust Generalized Dynamic Inversion Control for Stabilizing Rotary Double Inverted Pendulum 稳定旋转式双倒立摆的鲁棒广义动态反演控制
U. Ansari, I. Mehedi, A. Bajodah, U. Al-Saggaf
This paper presents the balance control design using Robust Generalized Dynamic Inversion (RGDI) for Rotary Double Inverted Pendulum (RDIP) system. The RGDI control comprised of the particular part and the robust control element. The particular part is responsible to enforce the constraint dynamics based on the attitude deviation functions, and is inverted using Moore-Penrose Generalized Inverse (MPGI) to obtain the control law. An additional robust term based on the concept of sliding mode is integrated to enhance the robust characteristics against system nonlinearities, uncertainties and disturbances. The singularity problem is addressed by incorporating a dynamic scale factor in the expression of MPGI. The proposed RGDI control will guarantee semi-global practically stable angular position tracking of the horizontal rotary arm and the stabilization of the two pendulums at the upright position. Numerical simulations are carried out on the RDIP simulator to analyze the controller performance.
本文提出了基于鲁棒广义动态反演(RGDI)的旋转式双倒立摆系统平衡控制设计。RGDI控制由特定部分和鲁棒控制单元组成。基于姿态偏差函数的特定部分负责执行约束动力学,并使用Moore-Penrose广义逆(MPGI)进行反求以获得控制律。基于滑模概念的鲁棒项增强了系统对非线性、不确定性和干扰的鲁棒性。通过在MPGI的表达式中加入动态尺度因子来解决奇异性问题。所提出的RGDI控制将保证水平旋转臂的半全局实际稳定角位置跟踪和两个摆在垂直位置的稳定。在RDIP模拟器上进行了数值仿真,分析了控制器的性能。
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引用次数: 2
Tuning of Fractional Order PID Controller using CS Algorithm for Trajectory Tracking Control 基于CS算法的分数阶PID控制器轨迹跟踪整定
B. Ataşlar-Ayyıldız, O. Karahan
This study deals with a fractional order PID (FOPID) controller tuned by Cuckoo Search (CS) algorithm for the trajectory tracking control of a highly nonlinear 3 DOF robotic manipulator. For the purpose of comparison, a traditional PID controller is also tuned by CS. In order to optimize the controllers’ parameters, four different time domain cost functions are used. The robustness test of the tuned controllers is also investigated for a different trajectory. Finally, the simulation results reveal that the proposed FOPID controller can not only assure excellent tracking performance in Joint space, but also improves the robustness of the system for the different trajectory.
研究了一种基于布谷鸟搜索(Cuckoo Search, CS)算法的分数阶PID (FOPID)控制器,用于高度非线性三自由度机械臂的轨迹跟踪控制。为了便于比较,传统的PID控制器也是通过CS进行整定的。为了优化控制器参数,采用了四种不同的时域代价函数。在不同的轨迹下,研究了调谐控制器的鲁棒性测试。仿真结果表明,所提出的FOPID控制器不仅保证了关节空间良好的跟踪性能,而且提高了系统对不同轨迹的鲁棒性。
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引用次数: 4
Public Health Surveillance System for Online Social Networks using One-Class Text Classification 基于一类文本分类的在线社交网络公共卫生监测系统
Bilal Tahir, Kamran Amjad, Samar Firdous, M. Mehmood
Public health surveillance by traditional means is a costly and time consuming process. Today, the widespread use of social media has enabled researchers to study different aspects of life such as health, lifestyle, etc. Anonymous postings on these forums enable people to benefit from the collective experience of others facing similar problems. To effectively discern target data from the outliers in a web corpus, an efficient mechanism is required. Traditional approaches such as keyword-based filtering results in the loss of relevant data due to limited vocabulary and lack of contextual information. In this paper, we present a data filtration framework based on Long short-term memory (LSTM) recurrent neural network model for one-class text classification. We compare similarity of regenerated texts using this model for each disease with the original text using Recall-Oriented Understudy for Gisting Evaluation (ROUGE) metric for outlier filtration and classification. Optimal value of ROUGE similarity threshold is determined by introducing an optimization parameter that minimizes the misclassification rate. Leveraging data from three major online health forums, we show that our classification technique outperforms keyword-based filtering and conventional approach of multi-class text classification. Our classification technique can be effectively used for online social networks, search engines, and online recommender systems.
通过传统手段进行公共卫生监测是一个昂贵和耗时的过程。今天,社交媒体的广泛使用使研究人员能够研究生活的不同方面,如健康、生活方式等。这些论坛上的匿名帖子使人们能够从面临类似问题的其他人的集体经验中受益。为了有效地从网络语料库中的异常值中识别目标数据,需要一种有效的机制。传统的方法,如基于关键字的过滤,由于有限的词汇和缺乏上下文信息,导致相关数据的丢失。本文提出了一种基于LSTM递归神经网络模型的单类文本分类数据过滤框架。我们使用该模型对每种疾病的再生文本与原始文本的相似性进行比较,使用面向回忆的替代评估(ROUGE)指标进行异常值过滤和分类。通过引入一个最小化误分类率的优化参数,确定ROUGE相似阈值的最优值。利用来自三个主要在线健康论坛的数据,我们表明我们的分类技术优于基于关键字的过滤和传统的多类文本分类方法。我们的分类技术可以有效地用于在线社交网络、搜索引擎和在线推荐系统。
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引用次数: 3
Demand Forecasting for Domestic Air Transportation in Turkey using Artificial Neural Networks 基于人工神经网络的土耳其国内航空运输需求预测
Ismail Koc, E. Arslan
Nowadays, the competition between companies is rapidly increasing in every industry. This leads to companies trying to be prepared for the near future by forecasting business conditions. The estimated success rate in this context directly affects the success rate of the companies. Airline transport in Turkey, which has grown at a higher rate than Europe's, is an important part of the country's economy and transportation infrastructure. Furthermore, airports encourage development by motivating the commercial activities around them. In the competitive environment of airline transportation, successful forecasting is a crucial issue. Different methods such as multiple linear regression analysis, back-propagation neural networks (BPN), gravity models, multimode models, time series models are used in forecasting studies. In this study, an Artificial Neural Network (ANN) model is used for demand forecasting in domestic air transport in Turkey. In the scope of this study, AzureML, RScript and MATLAB were used for the dataset that is gained between 01.01.2007 - 01.11.2015 and some successful results were obtained. Pearson's correlation coefficient is used as the performance criteria for evaluation and it is observed that the results obtained from the proposed model are at an acceptable level which are gained between 0,79 and 0,93. Therefore, the proposed Artificial Neural Network (ANN) model can be used as a demand forecasting in many areas such as capacity planning, airport infrastructure planning, airplane investments in air transportation.
如今,每个行业公司之间的竞争都在迅速加剧。这导致公司试图通过预测商业状况来为不久的将来做好准备。在这种情况下,估计的成功率直接影响到公司的成功率。土耳其的航空运输增长速度高于欧洲,是该国经济和交通基础设施的重要组成部分。此外,机场通过推动周围的商业活动来鼓励发展。在竞争激烈的航空运输环境中,成功的预测是一个至关重要的问题。预测方法包括多元线性回归分析、反向传播神经网络(BPN)、重力模型、多模态模型、时间序列模型等。本研究采用人工神经网络(ANN)模型对土耳其国内航空运输需求进行预测。在本研究范围内,对2007年1月1日至2015年11月1日期间获得的数据集使用了AzureML、RScript和MATLAB,并获得了一些成功的结果。使用Pearson相关系数作为评价的性能标准,观察到从所提出的模型获得的结果在0.79和0.93之间处于可接受的水平。因此,本文提出的人工神经网络(ANN)模型可用于容量规划、机场基础设施规划、航空运输中的飞机投资等领域的需求预测。
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引用次数: 5
Comparison of Line StabilityIndex with TCSC Under Different Cases With PSAT 不同情况下线路稳定性指数与TCSC与PSAT的比较
Benalia Nadia, Ben Si Ali Nadia, Zerzouri Noura
The problems of voltage stability have aroused the interest of researchers in the electrical system around the world. It is important to maintain the system stability, or else it would lead to voltage collapse and consequently complete blackout of the system. In this paper the voltage stability indices, Fast Voltage Stability Index (FVSI); Line stability index LQP and Line stability index Lmn are used to determine the stability of a system. These indices are used to identify the most critical line of the system. Under single line outage condition, effect of placing a TCSC in the system on FVSI; Lpq index and Lmn index has been observed. An IEEE 14 bus system has been considered for simulation purpose with PSAT/ matlab.
电压稳定性问题已经引起了世界各国电力系统研究者的兴趣。保持系统的稳定是很重要的,否则会导致电压崩溃,从而导致系统完全停电。本文介绍了电压稳定指标,快速电压稳定指标(FVSI);用线路稳定指数LQP和线路稳定指数Lmn来确定系统的稳定性。这些指标用于识别系统的最关键线。在单线停运条件下,在系统中放置TCSC对FVSI的影响观察了Lpq指数和Lmn指数。采用PSAT/ matlab软件对ieee14总线系统进行了仿真。
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引用次数: 1
Detecting Road Lanes under Extreme Conditions: A Quantitative Performance Evaluation 极端条件下的车道检测:一种定量性能评估方法
Erkan Adalı, Haydar A. Şeker, Ahmetcan Erdogan, Kadir Haspalamutgil, Furkan Turan, Elif Aksu, Umut Karapinar
Vehicle autonomy definitionally is the act of processing information gathered from the environment and acting on the decisions formed based on this information. Therefore, any autonomous paradigm can only perform as good as the quality of the information it can understand. Lane identification forms the foundation of many of the autonomous drive and driver-assist technologies. However, current methods are not always reliable, especially under the edge-cases. In this paper, we have experimentally evaluated and extended the state-of-the-art deterministic lane detection methods. Our evaluation provides experimental evidence towards their efficacy in extreme cases: real-data with sharp shadows and varying lighting that is recorded through a camera that has a limited field of view. Experimental results suggest that a method that builds similarly to human perception performs better—with an increase of 32% in its accuracy. Our hypothesis is that autonomous vehicles that can perform even under these extreme conditions will play an important role on the fully autonomous systems.
车辆自动驾驶的定义是处理从环境中收集的信息,并根据这些信息形成的决策采取行动。因此,任何自治范式只能按照它所能理解的信息的质量来执行。车道识别是许多自动驾驶和驾驶辅助技术的基础。然而,目前的方法并不总是可靠的,特别是在边缘情况下。在本文中,我们对最先进的确定性车道检测方法进行了实验评估和扩展。我们的评估为其在极端情况下的有效性提供了实验证据:通过有限视场的相机记录的具有尖锐阴影和变化照明的真实数据。实验结果表明,一种与人类感知相似的方法表现得更好,准确率提高了32%。我们的假设是,即使在这些极端条件下也能发挥作用的自动驾驶汽车将在完全自动驾驶系统中发挥重要作用。
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引用次数: 1
Performance Analysis and CPU vs GPU Comparison for Deep Learning 深度学习的性能分析和CPU与GPU的比较
Ebubekir Buber, B. Diri
Deep learning approaches are machine learning methods used in many application fields today. Some core mathematical operations performed in deep learning are suitable to be parallelized. Parallel processing increases the operating speed. Graphical Processing Units (GPU) are used frequently for parallel processing. Parallelization capacities of GPUs are higher than CPUs, because GPUs have far more cores than Central Processing Units (CPUs). In this study, benchmarking tests were performed between CPU and GPU. Tesla k80 GPU and Intel Xeon Gold 6126 CPU was used during tests. A system for classifying Web pages with Recurrent Neural Network (RNN) architecture was used to compare performance during testing. CPUs and GPUs running on the cloud were used in the tests because the amount of hardware needed for the tests was high. During the tests, some hyperparameters were adjusted and the performance values were compared between CPU and GPU. It has been observed that the GPU runs faster than the CPU in all tests performed. In some cases, GPU is 4-5 times faster than CPU, according to the tests performed on GPU server and CPU server. These values can be further increased by using a GPU server with more features.
深度学习方法是当今许多应用领域使用的机器学习方法。在深度学习中执行的一些核心数学运算适合并行化。并行处理提高了操作速度。图形处理单元(GPU)经常用于并行处理。gpu的并行处理能力比cpu高,因为gpu的核数远远多于cpu。本研究在CPU和GPU之间进行基准测试。测试使用Tesla k80 GPU和Intel Xeon Gold 6126 CPU。采用递归神经网络(RNN)结构的网页分类系统进行了性能比较。测试中使用了运行在云上的cpu和gpu,因为测试所需的硬件数量很高。在测试过程中,调整了一些超参数,并比较了CPU和GPU的性能值。已经观察到,在执行的所有测试中,GPU的运行速度都快于CPU。根据在GPU服务器和CPU服务器上的测试,在某些情况下,GPU的速度比CPU快4-5倍。通过使用具有更多功能的GPU服务器,这些值可以进一步增加。
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引用次数: 40
Dynamic Economic Dispatch with Valve Point Effect by Using GA and PSO Algorithm 基于遗传算法和粒子群算法的阀点效应动态经济调度
Mikail Purlu, B. Turkay
This paper presents Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) technique to solve dynamic economic dispatch (DED) problem. The main purpose of DED is to minimize total cost of generation power to take care of the various load demand in each hour. DED problem solution also must provide individual inequality and equality constraints at the same time. The algorithms have been applied to two test system, taking into account transmission losses. The first of the selected systems is 3 unit test system and the second is 10 unit system considering the valve point effect. Simulation results applied on the test systems show that the two algorithms obtained optimal and reliable results compared to the other methods used in the literature.
提出了一种基于遗传算法和粒子群算法的动态经济调度问题。DED的主要目的是使发电总成本最小化,以照顾每小时的各种负载需求。DED问题的解决还必须同时提供个体不平等和平等约束。该算法已在两个测试系统中得到应用,并考虑了传输损耗。首先选取3单元试验系统,其次选取考虑阀点效应的10单元试验系统。在测试系统上的仿真结果表明,与文献中使用的其他方法相比,这两种算法获得了最优和可靠的结果。
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引用次数: 1
An adaptive state feedback controller based on SVR for nonlinear systems 基于SVR的非线性系统自适应状态反馈控制器
Kemal Uçak, Gülay Öke Günel
In this study, generalized self-tuning regulator (STR) based on support vector regression (SVR) which was previously introduced is deployed to design a state feedback controller so as to control a nonlinear bioreactor system. The parameters of the state feedback controller used in the controller block are adjusted via SVR based parameter estimator and system model blocks. The performance evaluation of the controller has been examined by simulations carried out on a nonlinear bioreactor system.
本研究利用之前介绍的基于支持向量回归(SVR)的广义自整定调节器(STR)设计状态反馈控制器,对非线性生物反应器系统进行控制。通过基于SVR的参数估计器和系统模型块对控制器块中使用的状态反馈控制器的参数进行调整。通过对一个非线性生物反应器系统的仿真,验证了控制器的性能评价。
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引用次数: 1
Modelling and Hierarchical Control of CBTC CBTC的建模与层次控制
Cem Atilgan, Özgür Turay Kaymakçi
Over the last decade, the railway industry has a great evolution about signaling system and there is more orientation from the standard railway signaling system to the communicationbased signaling system day to day. Communications-based train control (CBTC) is a very flexible and useful approach to check train activity and track operation. This system basically build upon radio communication to transfer in time and correct train control information.In this paper, we focus on model the all necessary CBTC elements with finite state automata and build CBTC control architecture with decentralized DES and support the existing control architecture with a three-level hierarchy. For the overall system, we show hierarchical consistency and that the closed-loop behavior is non-blocking. This paper gives an overview of the modelling a discrete event system about CBTC and gives control of CBTC.
在过去的十年中,铁路行业在信号系统方面有了很大的发展,从标准的铁路信号系统到基于通信的信号系统的方向越来越多。基于通信的列车控制(CBTC)是一种非常灵活和有用的方法来检查列车活动和轨道运行。该系统主要建立在无线电通信的基础上,实现列车控制信息的及时、准确传递。在本文中,我们着重于用有限状态自动机对所有必要的CBTC元素建模,并使用分散的DES构建CBTC控制体系结构,并以三层层次结构支持现有的控制体系结构。对于整个系统,我们证明了层次一致性,并且闭环行为是非阻塞的。本文概述了关于CBTC的离散事件系统的建模,并给出了CBTC的控制方法。
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引用次数: 0
期刊
2018 6th International Conference on Control Engineering & Information Technology (CEIT)
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