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2020 5th IEEE International Conference on Recent Advances and Innovations in Engineering (ICRAIE)最新文献

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PD Observer Design for Descriptor Systems with Unknown Inputs: Application to Infinite Bus System 未知输入广义系统的PD观测器设计:在无限总线系统中的应用
Mahendra Kumar Gupta, Nutan Kumar Tomar, Dipa Sharma, Juhi Jaiswal
Proportional derivative (PD) observers are designed for linear descriptor systems with unknown inputs. Observer existence conditions are provided in the form of rank conditions directly on system matrices. Observer matrices are constructed by pole placement method and Linear Matrix Inequality (LMI) approach. The application of the work is demonstrated on a mathematical model of an infinite bus system. The efficiency of the proposed method is shown by simulation results.
针对具有未知输入的线性广义系统,设计了比例导数观测器。观测器的存在条件以秩条件的形式直接在系统矩阵上给出。采用极点放置法和线性矩阵不等式(LMI)方法构造观测器矩阵。在一个无限总线系统的数学模型上证明了本文工作的应用。仿真结果表明了该方法的有效性。
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引用次数: 1
Estimation of Transmission Force in Assistive Devices using Conductive Liquid Metal based Sensorized Pneumatic Artificial Muscle 基于导电液态金属的传感气动人工肌肉在辅助装置中传输力的估计
Debadrata Sarkar, Sayantan Pal, S. Roy, Amit Kumar, Aman Arora
The article presents a technique to estimate the force transmitted in pneumatic artificial muscle based assistive devices by sensorizing the actuator. For this purpose, the development of a conductive liquid metal based elastomeric strain sensor has been discussed with the required characterization of its performance. A comparative analysis is shown between the modes of attachment of the developed sensor on the actuator so as to obtain a proper range of response from the sensor. A two-step algorithm has been implemented to estimate the force transmitted in series from an actuator used to assist the human knee and ankle during walking. The estimation results are validated against the readings from an actual inline loadcell, showing good agreement with one another.
本文提出了一种通过对气动人工肌肉辅助装置的致动器进行传感来估计其传递力的方法。为此,本文讨论了导电液态金属弹性应变传感器的发展及其性能表征。对所研制的传感器在作动器上的附着方式进行了对比分析,以获得传感器的适当响应范围。实现了一种两步算法来估计从用于辅助人体膝关节和踝关节行走的致动器串联传递的力。根据实际的内联称重传感器的读数验证了估计结果,显示出彼此之间的良好一致性。
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引用次数: 3
Optimization Through Wind Modeling by Means of Mechanical Design to Enhance Wind Power Generation and System Reliability 基于机械设计的风力建模优化,提高风力发电和系统可靠性
Vaishali Shirsath, R. Agrawal
In most of the review article wind power based on mechanical design parameters or based on the reliability analysis of the wind farm is presented. In this review paper we presented analysis of wind power based on mechanical design parameters, reliability parameter and consideration electrical power in addition to Wind Canyon Model. There is a need to optimize design parameters of wind farm such as turbine size, weight, gear ratio parameters to achieve quality power as output which can sustain and maintain its availability with maximum efficiency. This article provides critical review of previous researcher. Paper also presents a detailed direction for wind analysis considering most and important constraint. Mathematical modeling is an important task for the modeling. This article discusses Mathematical modeling for wind data. Review of many research papers on reliability analysis specifically based on wind turbines between the 1999 to 2020 are presented. Since the last years many researchers focused on data collected on the reliability in wind turbines and published findings in different journals and articles are also noted. The issues in wind research is also addressed in this article. The review shows mechanical design analysis, reliability analysis and power optimization techniques. The critical findings provided here is helpful for other researcher. A combined objective function or cost function needs to develop subjected to constraints to achieve maximum profit through this business. A research work is required to improve the design variable in wind generator in addition to Wind power aspects such as power efficiency in addition to reliability.
在大多数综述文章中,提出了基于机械设计参数或基于风电场可靠性分析的风力发电方案。本文在风谷模型的基础上,提出了基于机械设计参数、可靠性参数和考虑电功率的风力发电分析方法。需要优化风电场的设计参数,如涡轮机尺寸、重量、传动比参数等,以获得高质量的输出功率,以最大的效率维持和保持其可用性。本文对前人的研究进行了评述。文中还提出了考虑最重要约束条件的风分析的具体方向。数学建模是建模的一项重要任务。本文讨论了风数据的数学建模。本文回顾了1999年至2020年期间有关风力发电机可靠性分析的许多研究论文。自去年以来,许多研究人员关注风力涡轮机可靠性收集的数据,并在不同的期刊和文章上发表了研究结果。本文还讨论了风力研究中的问题。综述了机械设计分析、可靠性分析和功率优化技术。这里提供的关键发现对其他研究人员有帮助。一个组合的目标函数或成本函数需要在约束下发展,以通过该业务实现最大的利润。除了风力发电机的可靠性外,还需要研究提高风力发电机的功率效率等设计变量。
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引用次数: 0
Nonlinear Optimal Control of a Two Wheeled Self Balancing Robot 两轮自平衡机器人的非线性最优控制
B. Karthika, V. R. Jisha
Two wheeled self balancing robots have dynamic behaviour and are unstable in nature. Due to this, stabilizing of these robots has become a field of interest to many researchers. Around the equilibrium point of two wheeled self balancing mobile robot, the pitch angles are very small. Hence the balancing is achieved commonly by using linear control methods such as LQR(Linear Quadratic Regulator) control, PID(Proportional Integral Derivative) control etc. But the robots with large pitch angles tends to be in a region of high nonlinear behavior. Hence the linear control techniques fails in maintaining the balance of the robot. To remedy this problem and for improving the performances of the robot, an SDRE(State Dependent Riccati Equation) controller is designed along with SDC (State Dependent Coefficient) Matrix. Simulations are done to check the stability using SDRE controllers. A comparison is done using SDRE, PID and LQR controllers for the system with nonlinear dynamics. Also a comparison is done using PID and LQR controllers for the system with linear dynamics. From the simulations it is clear that SDRE controller shows excellent balancing for the two wheeled self balancing robot when compared to PID and LQR controllers.
两轮自平衡机器人具有动态特性,本质上是不稳定的。因此,这些机器人的稳定性已成为许多研究人员感兴趣的领域。两轮自平衡移动机器人在平衡点附近的俯仰角很小。因此,平衡通常通过使用线性控制方法来实现,例如LQR(线性二次调节器)控制,PID(比例积分导数)控制等。但大俯仰角的机器人往往处于高度非线性行为区域。因此,线性控制技术无法保持机器人的平衡。为了解决这一问题,提高机器人的性能,设计了状态相关Riccati方程(SDRE)控制器和状态相关系数(SDC)矩阵。利用SDRE控制器对其稳定性进行了仿真验证。对具有非线性动态特性的系统,采用SDRE、PID和LQR控制器进行了比较。同时,对线性动态系统采用PID和LQR控制器进行了比较。仿真结果表明,与PID和LQR控制器相比,SDRE控制器对两轮自平衡机器人的平衡性能较好。
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引用次数: 3
Performance Analysis of 6-Pulse HVDC-VSC using Particle Swarm Optimization(PSO) Based controller in d-q Reference Frame Under Transient AC Fault Conditions 基于粒子群优化(PSO)的6脉冲HVDC-VSC在瞬态交流故障条件下的性能分析
Aradhana Khillo, S. S. Patnaik
This paper provides the PSO based control scheme for regulation of active power and reactive power flow across the HVDC-VSC.VSC-HVDC system provides freedom of individual and independent control of active and reactive power in synchronous reference frame. PSO is based on the principle of “survival of the fittest”, originating from the idea of describing the mechanism of natural selection of the best food location. PSO provides the scope of self-tuning of the PI controller i.e with the change in system operating condition, the controller adjusts itself or tunes itself, thereby regulating the active power and reactive power. Also, PSO depend on the value of the objective function thereby making the computation less tedious and easy for implementation. The system is subjected to AC faults, and the response of the system is validated using MATLAB/SIMULINK platform.
本文提出了一种基于粒子群算法的HVDC-VSC有功和无功潮流调节控制方案。VSC-HVDC系统提供了同步参照系有功功率和无功功率的单独和独立控制的自由。PSO基于“适者生存”的原则,源于描述最佳食物位置的自然选择机制的想法。PSO提供了PI控制器的自整定范围,即随着系统运行状态的变化,控制器自我调整或自整定,从而调节有功功率和无功功率。此外,粒子群算法依赖于目标函数的值,从而使计算不那么繁琐,易于实现。对系统进行了交流故障测试,并在MATLAB/SIMULINK平台上验证了系统的响应。
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引用次数: 2
PSent20: An Effective Political Sentiment Analysis with Deep Learning Using Real-Time Social Media Tweets 使用实时社交媒体tweet的深度学习有效的政治情绪分析
Apar Garg, Rohit Kumar Kaliyar
In the current era of computing, the use of social networking sites like Twitter and Facebook, is growing significantly over time. People from different cultures and backgrounds share vast volumes of textual comments that show their viewpoints on several aspects of life and make them available to all for commenting. Monitoring real social media activities has now become a prime concern for politicians in understanding their social image. In this paper, we are going to analyse the tweets of various social media platforms regarding two prominent political leaders and classify them as positive, negative or neutral using Machine Learning and Deep Learning methods. We have proposed a Deep Learning approach for a better solution. Our proposed model has provided state-of-the-art results using Deep Learning models.
在当今的计算机时代,像Twitter和Facebook这样的社交网站的使用随着时间的推移而显著增长。来自不同文化和背景的人们分享了大量的文本评论,这些评论显示了他们对生活的几个方面的观点,并使所有人都可以评论。监控真实的社交媒体活动现在已经成为政客们了解自己社会形象的首要关注点。在本文中,我们将分析各种社交媒体平台上关于两位杰出政治领导人的推文,并使用机器学习和深度学习方法将其分类为积极,消极或中立。为了更好的解决方案,我们提出了一种深度学习方法。我们提出的模型使用深度学习模型提供了最先进的结果。
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引用次数: 2
Study for the Prediction of E-Commerce Business Market Growth using Machine Learning Algorithm 基于机器学习算法的电子商务市场增长预测研究
Naved Kalal, Sameer Dhanawale, R. Ghadge, Kulwantsinh Nimbalkar, Madhuri K. Gawali
Learning is a key to perform ideas adequately. Machine Learning empowers IT organizations to identify the patterns on the basis of currently available algorithms and data frames to cultivate acceptable solution concepts. Online business market and customer retention is a relation like the two sides of a coin. It is a nonlinear relationship. Prediction of Business growth is a very sensitive issue of E-Commerce market with its future existence. Online venders of business market manage their inventories on virtual prediction bases for full filling the basic need of demand-supply chain of customers. Authorizing traditional ways and analysis methods are not ensuring the rate of reliability of the sales prediction. To produce more precise predictions and analysis, we use ML algorithm. In this paper, we utilized the selling data set of an E-commerce company and segregated it, in different quarters then calculating the sale income per quarter. After that we divided the dataset in the proportion of 70% and 30% for Training data set and Testing data set. By applying machine learning algorithm, we will be predicting income of next quarters as well as analysis the maximally sold commodities with their frequencies of purchase per quarter. Then provide analysis results and prediction of customer's purchase patterns to the business organization to make a strategy to take a competitive advantage by sustaining and accumulating for their goods management and planning for inventories.
学习是充分执行想法的关键。机器学习使IT组织能够在当前可用的算法和数据框架的基础上识别模式,以培养可接受的解决方案概念。在线商业市场和客户保留是一种关系,就像硬币的两面。这是一个非线性关系。随着电子商务市场的发展,业务增长预测是一个非常敏感的问题。商业市场的在线供应商以虚拟预测为基础进行库存管理,以满足客户需求-供应链的基本需求。授权传统的方法和分析方法不能保证销售预测的可靠性。为了产生更精确的预测和分析,我们使用ML算法。在本文中,我们利用某电子商务公司的销售数据集,并将其分离,在不同的季度中计算每个季度的销售收入。然后我们将数据集按照70%和30%的比例划分为训练数据集和测试数据集。通过应用机器学习算法,我们将预测下个季度的收入,并分析每个季度最大销售的商品及其购买频率。然后将客户购买模式的分析结果和预测提供给商业组织,为其商品管理和库存规划制定持续积累的竞争优势策略。
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引用次数: 2
Reliability Constrained Day Ahead Unit Commitment with Optimal Spinning Reserve Allocation for Solar Integrated Power System 太阳能发电系统可靠性约束下的最优旋转备用分配日前机组承诺
Smriti Jain, R. Pachar, L. Gidwani
Unit commitment is becoming a complex problem with the increasing constraints due to the restructuring of power system and the escalation in inclusion of various types of Distributed Generation sources. These sources offer a significantly lower generation compared to the conventional sources. Also they pose synchronising problems with the grid since the electricity cannot be transmitted over long distances and thus they provide the localized consumption of energy. In this paper, unit commitment is performed with optimal spinning reserve allocation and the assessment of reliability in terms of loss of load, in the presence of solar integration into the power system. The ‘Loss Of Load Probability’ (LOLP) index is utilized for determining the level of reliability of the obtained results. The Spinning Reserve (SR) considered in the UC calculations, is a constant value and it is not varied with respect to the changes in solar generation. Here, the spinning reserve optimality is determined with respect to the changes in power injection due to the solar energy integration into the power system. Dynamic programming technique is applied on two systems (four generator and ten generator systems) and the results are compared with those obtained without the consideration of LOLP, SR optimality and solar energy sources.
由于电力系统的结构调整和各种类型的分布式发电源的增加,机组承诺日益成为一个复杂的问题。与传统能源相比,这些能源的发电量要低得多。此外,由于电力不能远距离传输,它们也会带来与电网同步的问题,因此它们只能提供局部的能源消耗。在太阳能并网的情况下,采用最优旋转备用分配和负荷损失可靠性评估进行机组承诺。“失载概率”(LOLP)指数用于确定所获得结果的可靠性水平。UC计算中考虑的旋转储备(SR)是一个恒定值,它不随太阳能发电的变化而变化。在这里,旋转储备的最优性是根据由于太阳能并入电力系统而导致的功率注入变化来确定的。将动态规划技术应用于两种系统(四发电机和十发电机系统),并与不考虑LOLP、SR最优性和太阳能的情况下的结果进行了比较。
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引用次数: 1
Efficient DC-DC Converter Using Variable Switching Frequency Digital Controller 采用可变开关频率数字控制器的高效DC-DC变换器
P. Nandankar, P. Bedekar, P. V. Dhawas
In this research paper, load adaptive high efficiency DC-DC converter with optimized switching control is suggested. The converter is controlled over a wide load range by auto-tuning the switching frequency. The desired switching frequency is selected depend upon load current value. The new algorithm is presented to adapt the loading condition while maintaining the constant output voltage. This algorithm is implemented in a simulation environment where converter continuously maintains the optimal switching frequency under varying converter parameters and operating conditions. This Adaptive frequency Optimization (AFO) proposed controller performance is simulated and proposed algorithm is verified successfully. The efficiency curves are also plotted for different values of load current which provides validation of proposed adaptive frequency optimization algorithm.
本文提出了一种负载自适应、开关控制优化的高效DC-DC变换器。通过自动调谐开关频率,转换器可以在很宽的负载范围内进行控制。所需开关频率的选择取决于负载电流值。提出了在保持输出电压恒定的情况下适应负载条件的新算法。该算法是在变换器在不同参数和工作条件下持续保持最优开关频率的仿真环境中实现的。仿真结果验证了该自适应频率优化(AFO)控制器的性能。绘制了不同负载电流值下的效率曲线,验证了自适应频率优化算法的有效性。
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引用次数: 4
A Review on Comparison of Different Techniques of Image Dehazing 不同图像去雾技术的比较综述
Pushpa Koranga, Soma Kumawat
Due to the environmental factor like unbalanced air light, darkness, contrast, saturation and attenuation causes hazy image. Many techniques are used to produce good quality image that retain color, illumination and better edges which suffer from weak edges and halo artifacts. In this paper we will be discussing previously proposed method which is adopted to remove haze from image. Several methods have been adopted to remove haze such as image dehazing is classified into two types such as single image dehazing and multi image dehazing. Different techniques of Image dehazing have been discussed in this review and also their advantage and drawback.
由于空气光线不平衡、暗度、对比度、饱和度、衰减等环境因素导致图像模糊。使用了许多技术来产生高质量的图像,保留颜色,照明和更好的边缘,而遭受弱边缘和光晕伪影。在本文中,我们将讨论之前提出的去除图像雾霾的方法。除雾的方法有几种,如图像除雾分为单图像除雾和多图像除雾两种。本文讨论了各种图像去雾技术及其优缺点。
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引用次数: 0
期刊
2020 5th IEEE International Conference on Recent Advances and Innovations in Engineering (ICRAIE)
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