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2019 5th Conference on Knowledge Based Engineering and Innovation (KBEI)最新文献

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Design Optimization of Wound Rotor Induction Motor Using Genetic Algorithm 基于遗传算法的绕线转子感应电动机设计优化
Pub Date : 2019-02-01 DOI: 10.1109/KBEI.2019.8735061
M. Etemadi, Reza Haghighian
Wound rotor induction motors have been underestimated for specific applications and high power. Therefore, in this paper, the optimization of the design of a wound rotor induction motor using a genetic algorithm with objective function including power losses and motor weight is proposed. Initially, after Magnetic Equivalent Circuit (MEC) modeling, different parameters are selected with sensitivity analysis, and then optimization process is performed on a sample of 4.3 MW, 6 kV, 1000 rpm. Finally, the optimized parameters by the finite element method are accredited thermally, magnetically and electrically.
绕线转子感应电动机在特定应用和大功率方面被低估了。因此,本文提出了一种以功率损耗和电机重量为目标函数的遗传算法对绕线转子感应电机进行优化设计。首先,在建立等效磁路(MEC)模型后,选择不同参数并进行灵敏度分析,然后在4.3 MW, 6 kV, 1000 rpm的样品上进行优化过程。最后,通过有限元法对优化后的参数进行了热、磁、电等方面的验证。
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引用次数: 4
Challenges of Data Mining Classification Techniques in Mammograms 乳房x线照片中数据挖掘分类技术的挑战
Pub Date : 2019-02-01 DOI: 10.1109/KBEI.2019.8735093
Leyli Mahdikhani, M. Keyvanpour
Breast cancer is the growth of a malignant tumor in the breast. The incidence of this disease in women has increased significantly in recent years. Currently, early detection is an important factor in cancer treatment. The most effective method for early detection is mammography. The computer aided diagnosis (CAD) systems are essential to help searching for suspicious signs, or classifying lesions in benign or malignant types. In this paper, we want to discuss masses as one of the most important indicators of breast cancer. To classify and detect masses in mammograms, different data mining techniques have been used. On the other hand, the problem of classifying masses in mammogram images has placed many challenges for researchers. Before implementing a mass classification system, there is a need to be aware of the available problems and challenges in order to select the appropriate methods and classifiers. Hence, we first review the methods of mining and classifying masses in mammograms. Techniques that are commonly used can be categorized into four groups: Function based, probability based, similarity based and rule based techniques that are briefly discussed in this article. Then, we propose a categorization of existing challenges in the problem of mammographic mass classification. These challenges are divided into two parts: Data related and technique related challenges. Finally, the presented techniques are evaluated and analyzed according to the involved challenges.
乳腺癌是乳房中恶性肿瘤的生长。近年来,这种疾病在妇女中的发病率显著增加。目前,早期发现是癌症治疗的一个重要因素。最有效的早期检测方法是乳房x光检查。计算机辅助诊断(CAD)系统是必不可少的,以帮助寻找可疑的迹象,或分类病变的良性或恶性类型。在本文中,我们想讨论肿块作为乳腺癌最重要的指标之一。为了对乳房x光片中的肿块进行分类和检测,使用了不同的数据挖掘技术。另一方面,乳房x光图像中肿块的分类问题给研究人员带来了许多挑战。在实施大规模分类系统之前,有必要了解现有的问题和挑战,以便选择适当的方法和分类器。因此,我们首先回顾了乳房x光片中肿块的挖掘和分类方法。常用的技术可以分为四组:基于函数的、基于概率的、基于相似性的和基于规则的技术,本文将简要讨论这些技术。然后,我们提出了在乳房x线摄影肿块分类问题的现有挑战的分类。这些挑战分为两部分:数据相关挑战和技术相关挑战。最后,根据所涉及的挑战对所提出的技术进行了评估和分析。
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引用次数: 5
Optimal Switching Algorithm for Different Topologies of 15-Level Inverter Using Genetic Algorithm 基于遗传算法的15电平逆变器不同拓扑的最优切换算法
Pub Date : 2019-02-01 DOI: 10.1109/KBEI.2019.8734966
A. A. K. Arani, A. Ghasemi, H. Karami, M. Akhbari, G. Gharehpetian
Multi-level inverters (MLIs) have better power quality factors compared with two level inverters, because of their staircase output waveform. Switching algorithm and Total Harmonic Distortion (THD) of the MLIs are important issues in the MLI operation. In this paper, THD and switching algorithm of three 15-level inverters topologies are investigated. In order to obtain their optimal switching algorithm, a THD-based objective function for output voltage waveform is expressed and optimized by using Genetic Algorithm (GA). Simulation of these topologies in MATLAB/Simulink is carried out to validate the results of GA. As shown in the paper, asymmetrical 15-level inverter has better performance than other topologies.
由于多级逆变器的输出波形呈阶梯状,因此与双电平逆变器相比,多级逆变器具有更好的电能质量因数。MLI的开关算法和总谐波失真(THD)是MLI运行中的重要问题。本文研究了三种15电平逆变器拓扑结构的THD和开关算法。为了得到最优的开关算法,提出了基于thd的输出电压波形目标函数,并利用遗传算法对其进行了优化。在MATLAB/Simulink中对这些拓扑进行了仿真,验证了遗传算法的结果。结果表明,非对称15电平逆变器的性能优于其他拓扑结构。
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引用次数: 3
Tracking and Predictive Error-Based Adaptive Control of Aerial Vehicle in the Presence of Uncertainty 飞行器不确定性跟踪与预测误差自适应控制
Pub Date : 2019-02-01 DOI: 10.1109/KBEI.2019.8735070
M. Navabi, H. Ghanbari
The current study is aimed to present longitudinal passenger aircraft mode with simple model reference and predictive and tracking error-based adaptive control. Because of using predictive and tracking error and its rate at the same time this controller is more significant than simple model reference. These features can be very efficient and useful in controlling flight systems. This paper represents the equations of motion and conditions in a Multi-Input-Multi-Output (MIMO) system. The results indicate the more accuracy of tracking- predictive error-based adaptive control compared with a simple model reference.
本研究旨在提出具有简单模型参考和基于预测和跟踪误差的自适应控制的纵向客机模型。由于同时使用了预测误差和跟踪误差及其速率,该控制器比简单的模型参考更有意义。这些特征在控制飞行系统方面非常有效和有用。本文给出了多输入-多输出(MIMO)系统的运动方程和条件。结果表明,与简单的模型参考相比,基于跟踪预测误差的自适应控制具有更高的精度。
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引用次数: 2
Optimization of Sliding Mode Controller to control Three-Tank System Based on Lagrange Multipliers Optimization Algorithm 基于拉格朗日乘法器优化算法的三罐系统滑模控制器优化
Pub Date : 2019-02-01 DOI: 10.1109/KBEI.2019.8734935
M. Babaie, A. Ranjbar N.
This manuscript designs a sliding mode controller to adjust height of nonlinear three-tank system of two inputs and one output. This controller is a first order sliding mode controller in which several multipliers have been added to optimize the controller performance. To optimize these multipliers, a Lagrange multipliers optimization based is used for the first time. In comparison with evolutionary algorithms, it will be shown that using the Lagrangian optimization algorithm needless any iterations which makes this algorithm very fast and thus suitable for applications such as real-time systems. Finally, simulation results show that the proposed optimal method offers a faster response against uncertainties when the height of tank is also optimized.
本文设计了一种滑模控制器,用于二输入一输出非线性三缸系统的高度调节。该控制器是一个一阶滑模控制器,其中增加了几个乘法器以优化控制器的性能。为了优化这些乘数,首次使用了基于拉格朗日乘数优化的方法。与进化算法相比,拉格朗日优化算法无需任何迭代,这使得该算法非常快速,因此适合于实时系统等应用。最后,仿真结果表明,在对储罐高度进行优化的情况下,所提出的优化方法对不确定性的响应速度更快。
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引用次数: 4
Solving nonlinear optimization problem using new closed loop method for optimal path tracking 用新的闭环方法求解最优路径跟踪的非线性优化问题
Pub Date : 2019-02-01 DOI: 10.1109/KBEI.2019.8734913
F. Barat, M. Irani, M. Pahlevanzade
The purpose of this paper is to investigate the ability of the manipulator in point-to-point motion and determine its dynamic loading capacity using an optimal control method for controlling the new closed loop. The proposed method for designing an optimal nonlinear controller in a closed loop shape, in contrast to the usual methods based on indirect methods, is a combination of direct and indirect methods. The law of control is based on the solution of the nonlinear Hamilton-Jacobi-Bellman equation (HJB). For complex dynamics, this equation is solved using the Galerkin method and a nonlinear optimization algorithm. Another goal is to determine the dynamic loading capacity using this controller. The simulation results indicate the efficiency of the method in tracking the preset path from the manipulator, as well as determining the load capacity of the dynamic.Industrial robots are now widely used in various fields. So their production is increasing rapidly. Manipulator are a type of industrial robot that attracts the attention of many engineers of control and mechanics. Also, in this article, the 3Rrobot and 6R robot have been investigated.
本文的目的是研究机械手点对点运动的能力,并利用最优控制方法来控制新的闭环,确定其动态负载能力。本文提出的设计闭环形状最优非线性控制器的方法不同于通常基于间接方法的方法,而是直接法和间接法相结合的方法。控制律基于非线性Hamilton-Jacobi-Bellman方程(HJB)的解。对于复杂动力学问题,采用伽辽金法和非线性优化算法求解。另一个目标是使用该控制器确定动态负载能力。仿真结果表明,该方法可以有效地跟踪机械手的预定路径,并确定动态机械手的负载能力。工业机器人现在广泛应用于各个领域。因此,它们的产量正在迅速增长。机械手是一种工业机器人,引起了许多控制和机械工程师的注意。此外,本文还对3r机器人和6R机器人进行了研究。
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引用次数: 0
Kinematic and Dynamic Analysis of 3-DOF Delta Parallel Robot Based on the Screw Theory and Principle of Virtual Work 基于螺旋理论和虚功原理的三自由度Delta并联机器人运动学与动力学分析
Pub Date : 2019-02-01 DOI: 10.1109/KBEI.2019.8734994
F. Azad, Mohammad Reza Hairi Yazdi, M. T. Masouleh
The linear form of dynamic equation of parallel robots can be used to implement a wide variety of nonlinear adaptive control schemes in real time. Also, in parallel manipulators, linearizing the complex dynamic equation of motion is time consuming as well as complicated, but it is highly rewarding, since it can contribute to the achievement of fast and precise dynamic performance capabilities of the foregoing manipulators. Therefore, in this paper, instead of finding the nonlinear form of the dynamic equation of delta parallel robot by means of virtual work method, a linear form of the dynamic equation is calculated. To this end, kinematic analysis has been performed by resorting to the screw theory, as it provides more compact formulation of Jacobian matrices and facilitates the employment of virtual work principle. After finding the Jacobian matrices of input-output, and the Jacobian matrices between each link and end-effector’s kinematics parameters, the full dynamic equation of motion of robot has been written. The twists comprising the equation has been determined separately and linear form of dynamic equation of robot has been computed. Afterwards, the SimMechanics model of 3-DOF. Delta parallel robot has been constructed and a simulation is performed in order to verify the validity of proposed equations of motion, and the corresponding error of computed torques of actuators comparing with Simscape’s direct results is given.
并联机器人动力学方程的线性形式可用于实现各种非线性自适应实时控制方案。此外,在并联机械臂中,对复杂的动力学方程进行线性化是费时且复杂的,但它是非常有益的,因为它有助于实现上述机械臂的快速和精确的动态性能。因此,本文不是利用虚功法求出delta并联机器人动力学方程的非线性形式,而是求出线性形式的动力学方程。为此,借助螺旋理论进行运动学分析,因为它提供了更紧凑的雅可比矩阵公式,并便于虚功原理的应用。在求出输入输出的雅可比矩阵、各连杆与末端执行器的运动学参数之间的雅可比矩阵后,写出了机器人的全动力学运动方程。分别确定了构成方程的弯矩,并计算了机器人动力学方程的线性形式。然后,建立了三自由度的SimMechanics模型。构造了Delta并联机器人并进行了仿真,验证了所提运动方程的有效性,并给出了相应的执行机构扭矩计算结果与Simscape直接计算结果的误差。
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引用次数: 4
A Small Dual Band MIMO Antenna for S-Band and WLAN Applications 用于s波段和WLAN应用的小型双频MIMO天线
Pub Date : 2019-02-01 DOI: 10.1109/KBEI.2019.8735031
M. Ghahremani, C. Ghobadi, J. Nourinia, B. Mohammadi
A compact MIMO antenna with S- and WLAN bands is presented. The single element of the MIMO antenna is excited by a microstrip feed-line and a rectangular defected ground plane. A stepped feed-line is used to improve the impedance matching. Each working band is generated by using a stepped open-end meander line. To reduce mutual coupling and correlation, the MIMO elements are orthogonal to each other. The first band is 2.61-3.33GHz (720MHz, 22.8%) and the second band is around 3.92-10GHz (6080MHz, 86.9%). The antenna size is 20mm×40mm. The proposed MIMO antenna, besides its small size, has an omnidirectional pattern at operating frequencies.
提出了一种具有S波段和WLAN波段的小型MIMO天线。MIMO天线的单元件由微带馈线和矩形缺陷地平面激励。阶梯式馈线用于改善阻抗匹配。每个工作带都是通过使用阶梯式开口曲线生成的。为了减少相互耦合和相关,MIMO元素彼此正交。第一频段为2.61-3.33GHz (720MHz, 22.8%),第二频段约为3.92-10GHz (6080MHz, 86.9%)。天线尺寸为20mm×40mm。所提出的MIMO天线除体积小外,在工作频率上具有全向方向。
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引用次数: 1
Saas Cloud Service Applications to Solve Data mining Problems 解决数据挖掘问题的Saas云服务应用
Pub Date : 2019-02-01 DOI: 10.1109/KBEI.2019.8734941
A. Mohseni, Mehrpooya Ahmadalinejad
Software as a service (saas) is, in fact, a kind of model where software and its related information are fully deployed on the cloud. Users will be able to access the software with the help of a web browser. On the other hand, the advances that have been made in data collection and storage capabilities over the past decades have provided a lot of information in many sciences. Data mining is an attempt to obtain useful information from this data, and the growth of growth data globally has doubled the importance of data mining. Data mining has some shortcomings, including: 1. Data existence: Data must first be investigated and useful data extracted, which is accompanied by an error. 2. Accuracy of data: Data collected in order to be correct or incorrect may have errors, for example, instead of the male gender. 3. Failure to acquaint and control the general public and even experts in the field of data mining algorithms; Analysis methods in data mining. This paper attempts to demonstrate that performing data mining steps using the saas service will solve all these problems.
软件即服务(saas)实际上是一种模型,其中软件及其相关信息完全部署在云中。用户可以在网络浏览器的帮助下访问该软件。另一方面,过去几十年来在数据收集和存储能力方面取得的进步为许多科学提供了大量信息。数据挖掘是一种从这些数据中获取有用信息的尝试,全球增长数据的增长使数据挖掘的重要性增加了一倍。数据挖掘存在一些不足,包括:1;数据存在:必须首先调查数据并提取有用的数据,这伴随着错误。2. 数据的准确性:为了正确或不正确而收集的数据可能会有错误,例如,而不是男性性别。3.对数据挖掘算法领域的公众甚至专家不熟悉和控制;数据挖掘中的分析方法。本文试图证明使用saas服务执行数据挖掘步骤将解决所有这些问题。
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引用次数: 0
Procedural Composition of Traditional Persian Music Using Deep Neural Networks 基于深度神经网络的传统波斯音乐程序作曲
Pub Date : 2019-02-01 DOI: 10.1109/KBEI.2019.8734959
Mansoure Ebrahimi, Babak Majidi, Mohmmad Eshghi
In recent years the explosion in the amount of digital content used in various forms in virtual reality environments such as videogames requires generating a massive amount of new artistic materials. Procedural content generation using artificial intelligence algorithms helps producing this artistic materials with significant variety and based on various traditional source materials and avoiding virtual environments to be derivative. These systems can also lead to multi-cultural variety and use of traditional art in digital environments. In this paper, a recurrent deep neural network based framework for procedural composition of the traditional Persian music is proposed. The proposed system learns from the classical Persian musical modal systems and then produces new music. The proposed system is evaluated and the results show that the deep neural networks are capable of producing traditional Persian music with acceptable quality.
近年来,电子游戏等虚拟现实环境中以各种形式使用的数字内容数量激增,这需要产生大量新的艺术材料。使用人工智能算法的程序内容生成有助于生成具有显著多样性的艺术材料,并基于各种传统源材料,避免虚拟环境的衍生性。这些系统还可以导致多元文化的多样性,并在数字环境中使用传统艺术。本文提出了一种基于递归深度神经网络的传统波斯音乐程序性作曲框架。该系统从古典波斯音乐的调式系统中学习,然后产生新的音乐。对所提出的系统进行了评估,结果表明深度神经网络能够产生质量可接受的传统波斯音乐。
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引用次数: 5
期刊
2019 5th Conference on Knowledge Based Engineering and Innovation (KBEI)
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