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2020 2nd Novel Intelligent and Leading Emerging Sciences Conference (NILES)最新文献

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Decentralized Intersection Management of Autonomous Vehicles Using Nonlinear MPC 基于非线性MPC的自动驾驶汽车分散交叉口管理
Pub Date : 2020-10-24 DOI: 10.1109/NILES50944.2020.9257893
H. Ali, Samaa Khaled, Omar M. Shehata, E. I. Morgan
The rapid population growth and increase in vehicle numbers over the last few decades have caused traffic congestion worldwide, as intersections significantly impact the efficiency of traffic networks in urban areas, this paper focuses on intelligent traffic management at intersections by integrating the technologies of Intelligent Transportation Systems (ITS) and Autonomous Vehicles (AV). In this framework, a physical model represents each vehicle taking into account the dynamic limits. A decentralized Nonlinear Model Predictive Control (NMPC) is proposed to help coordinate the traffic flow of the AV at the intersection. The controller solves a quadratic cost function for the vehicle to ensure a smooth trajectory and minimum energy consumption, while avoiding collisions that is guaranteed using linear constraints and two developed priority assignment methods, Predicted Arrival Time (PAT) and First-Come First-Served (FCFS). The two methods are tested using a developed simulation environment on MATLAB/Simulink and the results are compared, the predicted arrival time method outperformed the FCFS method.
在过去的几十年里,人口的快速增长和车辆数量的增加导致了世界范围内的交通拥堵,而十字路口对城市交通网络的效率产生了重大影响,本文将智能交通系统(ITS)和自动驾驶汽车(AV)技术相结合,重点研究十字路口的智能交通管理。在这个框架中,一个物理模型代表了考虑到动态限制的每辆车。提出了一种分散非线性模型预测控制(NMPC),以帮助自动驾驶汽车在十字路口协调交通流。该控制器利用线性约束和两种先进的优先分配方法,即预测到达时间(PAT)和先到先得(FCFS),为车辆求解一个二次成本函数,以确保其轨迹平稳,能量消耗最小,同时避免碰撞。在MATLAB/Simulink开发的仿真环境中对两种方法进行了测试,并对结果进行了比较,预测到达时间方法优于FCFS方法。
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引用次数: 1
A Universal Model for Defective Classes Prediction Using Different Object-Oriented Metrics Suites 基于不同面向对象度量套件的缺陷类预测通用模型
Pub Date : 2020-10-24 DOI: 10.1109/NILES50944.2020.9257892
F. A. Mohamed, Cherif R. Salama, A. Yousef, Ashraf Salem
Recently, research studies were directed to the construction of a universal defect prediction model. Such models are trained using different projects to have enough training data and be generic. One of the main challenges in the construction of a universal model is the different distributions of metrics in various projects. In this study, we aim to build a universal defect prediction model to predict software defective classes. We also aim to validate the Object-Oriented Cognitive Complexity metrics suite (CC metrics) for its association with fault-proneness. Finally, this study aims to compare the prediction performances of the CC metrics and the Chidamber and Kemerer metrics suite (CK metrics), taking into account the effect of preprocessing techniques. A neural network model is constructed using these 2 metrics suites (CK & CC metrics suites). We apply different preprocessing techniques on these metrics to overcome variations in their distributions. The results show that the CK metrics perform well whether a preprocessing is applied or not, while CC metrics’ performance is significantly affected by different preprocessing techniques. The CC metrics always outperform in the recall, while the CK metrics usually outperform in other performance metrics. Normalization preprocessing results in the highest recall values using either of the two metrics suites.
近年来,研究的重点是建立通用的缺陷预测模型。这些模型使用不同的项目进行训练,以获得足够的训练数据并具有通用性。构建通用模型的主要挑战之一是各种项目中度量标准的不同分布。在本研究中,我们的目标是建立一个通用的缺陷预测模型来预测软件缺陷类别。我们还旨在验证面向对象的认知复杂性度量套件(CC度量)与错误倾向的关联。最后,考虑到预处理技术的影响,本研究旨在比较CC指标和Chidamber和Kemerer指标套件(CK指标)的预测性能。使用这两个度量套件(CK和CC度量套件)构建神经网络模型。我们对这些指标应用不同的预处理技术来克服其分布的变化。结果表明,无论是否进行预处理,CK指标的性能都很好,而CC指标的性能受不同预处理技术的影响较大。CC指标在召回方面总是优于CK指标,而CK指标通常在其他性能指标方面优于CK指标。使用两个度量套件中的任何一个,规范化预处理都会产生最高的召回值。
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引用次数: 1
Error Detection and Recovery in FPGA-based Pipelined Architectures 基于fpga的流水线结构中的错误检测与恢复
Pub Date : 2020-10-24 DOI: 10.1109/NILES50944.2020.9257894
Beatrice Shokry, G. Alkady, H. Amer, R. Daoud, I. Adly, H. Elsayed
In safety-critical applications, it is very important for the system to be very reliable. This paper focuses on such applications when implemented with pipelined architectures on SRAM-based FPGAs. The fault model consists of Hard Faults and Single Event Upsets (SEUs). Three different architectures are proposed to add fault detection and/or recovery in order to increase system reliability. It is shown that these improvements are made at a small cost in terms of area, power consumption and performance. An Altera Cyclone IV E FPGA is used to explain the design and the architectures’ behaviors while Markov models are used to calculate reliability increase.
在安全关键型应用中,系统的可靠性是非常重要的。本文的重点是在基于sram的fpga上实现流水线架构时的应用。故障模型包括硬故障(Hard fault)和单事件异常(Single Event Upsets)。提出了三种不同的体系结构来增加故障检测和/或恢复,以提高系统的可靠性。结果表明,这些改进在面积、功耗和性能方面的成本很小。采用Altera Cyclone IV E FPGA对设计和结构行为进行解释,采用马尔可夫模型对可靠性增量进行计算。
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引用次数: 2
Forecasting of renewable energy using ANN, GPANN and ANFIS (A comparative study and performance analysis) 基于ANN、GPANN和ANFIS的可再生能源预测(比较研究与性能分析)
Pub Date : 2020-10-24 DOI: 10.1109/NILES50944.2020.9257963
Omnia Abd Al-Azeem Hussieny, M. El-Beltagy, Samah El-Tantawy
Prediction and forecasting is preserved to be an important stage in diverse problems. The main aim of our manuscript is to forecast the wind speed and the temperature based on data collected months ago. The data and calculations we obtained for the temperatures in about 4 years ago from 2015 till 2018, whereas the statistics calculated for the wind speed were about 20 years from 1996 until 2015. The data of the wind speed and the temperature collected in different regions of Egypt East coast and Alsheihkzayid. The system used for prediction is based on three different methods which are Artificial Neural network (ANN), Genetic algorithm fused with artificial neural network (GPANN) and Adaptive Neuro-fuzzy inference system (ANFIS). They were used to forecast the future temperature and the future wind speed. The results proved that the system is robust, and it can be applicable during real time. The performance of ANFIS with the trapezoidal membership function proved to obtain the highest performance over all other methods. The optimal mean square error (MSE) reached for the wind speed was 7.2989 m/s and for the temperature is 3.8364 C°.
预测和预测被保留为各种问题的重要阶段。我们稿件的主要目的是根据几个月前收集的数据预测风速和温度。我们获得的数据和计算是2015年至2018年约4年前的温度,而风速统计是1996年至2015年约20年前的风速。在埃及东海岸和Alsheihkzayid不同地区收集的风速和温度数据。用于预测的系统基于三种不同的方法:人工神经网络(ANN)、人工神经网络融合遗传算法(GPANN)和自适应神经模糊推理系统(ANFIS)。它们被用来预测未来的温度和风速。结果表明,该系统具有较强的鲁棒性,可用于实时控制。结果表明,具有梯形隶属度函数的ANFIS的性能优于其他方法。风速和温度分别为7.2989 m/s和3.8364 C°时的最佳均方误差(MSE)。
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引用次数: 2
Meta-heuristic Algorithms for Solving the Multi-Depot Vehicle Routing Problem 求解多车场车辆路径问题的元启发式算法
Pub Date : 2020-10-24 DOI: 10.1109/NILES50944.2020.9257879
Omar M. Khairy, Omar M. Shehata, E. I. Morgan
Multi-depot Vehicle Routing Problem is one of the most important and challenging variations of the classical Vehicle Routing Problem, where the goal is to find the routes for a fleet of vehicles to serve a number of customers, travelling from and to several depots. Due to the complexity of solving such problems, meta-heuristic algorithms are used. The Most Valuable Player algorithm is a recent technique used to solve continuous optimization problems. This study uses the Genetic Algorithm and the Ant Colony Optimization to solve the Multi-Depot Vehicle Routing Problem. A Hybrid Most Valuable Player algorithm is also proposed to solve the multi-depot vehicle routing problem. The algorithm was tested on 10 different problems and compared to two well-known techniques, Genetic Algorithm and Ant Colony Optimization. Results of the developed algorithm were satisfactory for small sized problems, however Genetic Algorithm surpassed both other algorithms in most test cases.
多仓库车辆路线问题是经典车辆路线问题中最重要和最具挑战性的问题之一,其目标是找到车队服务于多个客户的路线,往返于多个仓库。由于解决这类问题的复杂性,采用了元启发式算法。最有价值球员算法是一种用于解决连续优化问题的新技术。本文采用遗传算法和蚁群算法求解多车场车辆路径问题。针对多车场车辆路径问题,提出了一种混合最有价值参与者算法。该算法在10个不同的问题上进行了测试,并与遗传算法和蚁群优化两种知名技术进行了比较。该算法对小问题的求解结果令人满意,但在大多数测试用例中,遗传算法优于其他两种算法。
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引用次数: 2
Prediction of Internal Flow’s Characteristics Around Two Cylinders in Tandem using optimal T-S fuzzy 利用最优T-S模糊预测串联两缸内流动特性
Pub Date : 2020-10-24 DOI: 10.1109/NILES50944.2020.9257971
Yusuf T. Elbadry, A. Elshafei, H. Ammar, M. Boraey, A. Guaily
Laminar unsteady incompressible flow past two-cylinders in tandem is investigated numerically. The vortex shedding over the cylinders’ arrangement is studied at various Reynolds numbers and blockage ratios while changing the distance between the two cylinders. The output from the numerical simulations is used to feed different regression methodologies to find the optimal approach for the proposed system modeling and identification. Artificial Neural Network (ANN) using Levenberg-Marquardt Algorithm (LM) training algorithm is used, as well as Takagi-Sugeno (T-S) fuzzy model are used and optimized using Particle swarm optimizer (PSO) in order to enhance the system model features. A comparison analysis is performed between the proposed ANN and T-S fuzzy models shows the superior ability of nonlinear modeling of T-S fuzzy with PSO over ANN.
对层流非定常不可压缩双柱串列流动进行了数值研究。研究了在不同雷诺数和堵塞比下,改变两缸间距离时圆柱布置上的涡脱落现象。数值模拟的输出用于不同的回归方法,以找到所提出的系统建模和识别的最佳方法。利用Levenberg-Marquardt算法(LM)训练算法的人工神经网络(ANN)和Takagi-Sugeno (T-S)模糊模型,并利用粒子群优化器(PSO)进行优化,以增强系统的模型特征。通过与T-S模糊模型的比较分析表明,基于粒子群算法的T-S模糊模型的非线性建模能力优于人工神经网络。
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引用次数: 0
Upper Limb Muscle Fatigue Analysis Using Multi-channel Surface EMG 上肢肌肉疲劳多通道表面肌电图分析
Pub Date : 2020-10-24 DOI: 10.1109/NILES50944.2020.9257909
A. Ebied, A. Awadallah, M. Abbass, Y. El-Sharkawy
Muscle fatigue is a biochemical process that causes several effects, one of them is changes in muscular electrical activity. Electromyography (EMG) signals detect these changes in the form of frequency shift and amplitude variation. In this study, forearm muscle fatigue has been investigated using 8-channel EMG signal recorded from 15 healthy subjects during isometric contraction. We utilise Median Frequency (MDF) and Root-Mean-Square (RMS) to quantify the fatigue effects on frequency and amplitude, respectively. The changes of both (∆MDF ) and (∆RMS) are the parameters to assess fatigue across subjects and channels. Statistical analysis has been carried out on the results to evaluate the vulnerability of subjects and channels to fatigue. Our methods were able to identify and assess the most and least susceptible subjects and channels to fatigue.
肌肉疲劳是一个生化过程,它会引起几种影响,其中之一是肌肉电活动的变化。肌电图(EMG)信号以频移和幅度变化的形式检测这些变化。在这项研究中,我们使用记录了15名健康受试者在等长收缩时的8通道肌电图信号来研究前臂肌肉疲劳。我们分别利用中位数频率(MDF)和均方根(RMS)来量化疲劳对频率和振幅的影响。(∆MDF)和(∆RMS)的变化是评估不同受试者和渠道的疲劳的参数。对结果进行统计分析,评价受试者和通道的疲劳易损性。我们的方法能够识别和评估最容易和最不容易疲劳的对象和渠道。
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引用次数: 3
Artificial Potential Field for Dynamic Obstacle Avoidance with MPC-Based Trajectory Tracking for Multiple Quadrotors 基于mpc轨迹跟踪的多旋翼飞行器动态避障人工势场
Pub Date : 2020-10-24 DOI: 10.1109/NILES50944.2020.9257973
Rawan A. Abdellatif, A. El-Badawy
This paper’s objective is to navigate multiple quadrotors using Artificial Potential Field (APF) technique for obstacle avoidance in a known environment. The idea is to use the dynamic potential field concept that does not depend on the quadrotor’s dynamics to ensure avoiding collisions among quadrotors. Each quadrotor navigates with repulsion force surrounding it to avoid obstacles including other quadrotors. The quadrotor follows its free-collision path using Model Predictive Control (MPC) as the trajectory tracker. The MPC controller task is to control each quadrotor independently to follow the planned path.
本文的目标是利用人工势场(APF)技术在已知环境中进行多旋翼飞行器的避障导航。这个想法是使用不依赖于四旋翼动力学的动态势场概念,以确保避免四旋翼之间的碰撞。每个四旋翼导航与周围的排斥力,以避免包括其他四旋翼障碍。四旋翼飞行器使用模型预测控制(MPC)作为轨迹跟踪器跟踪其自由碰撞路径。MPC控制器的任务是控制每个四旋翼独立遵循规划的路径。
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引用次数: 3
Experimental Path tracking optimization and control of a nonlinear skid steering tracked mobile robot 非线性滑移转向履带移动机器人实验路径跟踪优化与控制
Pub Date : 2020-10-24 DOI: 10.1109/NILES50944.2020.9257956
M. Barakat, H. Ammar, M. Elsamanty
The skid steering tracked robot is consider one of the famous robots that used in the autonomous agricultural field. The robot model is considered as a coupled nonlinear model. So, a real kinematic model is required to develop the robot motion which will improve the high quality and quantity of the cultivated crops. So, in this research a mathematical model for the skid steering mobile robot (SSMR) and a mathamtical model has been presented to simulate the robot. The model has been validated based on experimental data for the Skid Steering model. The robot motion as position and velocity has been measured using Inertial Measurement Unit (IMU) and fused with the External Camera measurements. These data used to train a neural network model to develop the equivalent kinematic model that replace the nonlinear model. Then, PID controller was used to perform position and speed control for the two tracks and then to the whole robot body pose. Moreover, metaheuristic techniques were used to improve the PID response by tuning gains based on Particle Swarm Optimization (PSO) and Artificial Bee Colony (ABC). The system response for the path tracking and its precision has been optimized based on the developed techniques. Moreover, the extracted results show the high performance of tracking path based on a tuned PID controller based on ABC optimization technique.
滑移转向履带式机器人被认为是应用于自主农业领域的著名机器人之一。将机器人模型视为一个耦合的非线性模型。因此,需要一个真实的运动学模型来开发机器人运动,从而提高农作物的质量和产量。为此,本文建立了滑移转向移动机器人(SSMR)的数学模型,并对其进行了仿真。基于滑移转向模型的实验数据,对该模型进行了验证。利用惯性测量单元(IMU)测量机器人运动的位置和速度,并与外部摄像机测量相融合。利用这些数据训练神经网络模型,建立等效的运动学模型来代替非线性模型。然后利用PID控制器对两个轨迹进行位置和速度控制,进而对整个机器人的身体姿态进行控制。此外,采用基于粒子群优化(PSO)和人工蜂群(ABC)的元启发式方法,通过调整增益来改善PID响应。在此基础上,优化了系统对路径跟踪的响应和精度。此外,提取的结果表明,基于ABC优化技术的自整定PID控制器的跟踪路径具有良好的性能。
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引用次数: 1
Simple Implementations of the Cole-Cole Models Cole-Cole模型的简单实现
Pub Date : 2020-10-24 DOI: 10.1109/NILES50944.2020.9257936
S. Kapoulea, C. Psychalinos, A. Elwakil
A novel procedure for the circuit implementation of the single and double dispersion Cole-Cole models is presented in this work. The concept is that the impedance of the whole model is approximated and implemented by appropriately configured RC networks, instead of the conventional implementation method where the approximation of each one of the fractional-order capacitors is required. The approximation is performed through the utilization of a curve fitting technique, where both magnitude and phase frequency responses of the total impedance are fitted by a rational integer-order driving point impedance. The main offered benefit is the reduction of the number of passive element count, especially in the case of the double dispersion Cole-Cole model. The behavior of the resulting structures, in terms of accuracy and robustness, is evaluated through simulation results.
本文提出了单色散和双色散Cole-Cole模型电路实现的新方法。其概念是,整个模型的阻抗通过适当配置的RC网络进行近似和实现,而不是传统的实现方法,其中需要对每个分数阶电容器进行近似。近似是通过利用曲线拟合技术进行的,其中总阻抗的幅值和相位频率响应都是由有理整阶驱动点阻抗拟合的。提供的主要好处是减少了被动元素计数的数量,特别是在双色散Cole-Cole模型的情况下。通过仿真结果对所得结构的精度和鲁棒性进行了评价。
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引用次数: 4
期刊
2020 2nd Novel Intelligent and Leading Emerging Sciences Conference (NILES)
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