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2016 IEEE 1st International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES)最新文献

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Wadoro: An autonomous mobile robot for surveillance Wadoro:用于监视的自主移动机器人
Shubham Mittal, J. K. Rai
This paper presents Wadoro (WAtch DOg RObot); an autonomous mobile robot for household surveillance in open-spaces like roof at night; but only shaded areas such as verandah during daytime. The robot has the capability to detect humans in near real-time round-the-clock using passive infrared motion sensors and camera. The work cycle of the robot is divided into phases of human detection; tracking; recognition and alert-generation with simultaneous phase of self-protection. On detecting a human; it starts tracking to detect the face using Haar-like features based cascade classifier. Subsequent recognition is done using local binary pattern histograms approach to ascertain if the face matches with the face in database. In case of mismatch; an alert in the form of phone call to the mobile phone is generated. Self-protection ensures collision-free movements and prevent it from being stolen by generating an alert call on detecting its pick up from the ground. The experimental results demonstrate its successful operation.
本文介绍了Wadoro(看门狗机器人);夜间在屋顶等开放空间进行家庭监控的自主移动机器人;但白天只能在阳台等阴凉处。该机器人使用被动红外运动传感器和摄像头,几乎可以24小时实时探测人类。机器人的工作周期分为人工检测阶段;跟踪;与自我保护同步的识别和报警阶段。关于检测人类;使用基于haar特征的级联分类器开始跟踪检测人脸。后续识别采用局部二值模式直方图法,确定人脸与数据库中的人脸是否匹配。如不匹配;以手机呼叫的形式发出警报。自我保护确保无碰撞运动,并通过在检测到它从地面拾取时产生警报呼叫来防止它被偷走。实验结果表明,该方法运行成功。
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引用次数: 6
Modeling and control of a battery connected standalone photovoltaic system 电池连接独立光伏系统的建模与控制
Priyabrata Shaw, P. Sahu, S. Maity, Punit Kumar
This paper presents modeling and control of a standalone photovoltaic (PV) system in which a battery is used as a backup source for power management between the source and the load. Lead-acid battery is commonly used in high power PV applications due to its low cost and availability in large size. The modeling of PV system and lead-acid battery by using the corresponding equivalent circuits are discussed here. Three independent control loops are proposed to control the standalone PV system; MPPT control loop for extracting maximum power from PV module under different solar irradiation, battery control loop for bidirectional power flow between battery and dc-link through buck-boost converter to keep the input dc voltage constant, and inverter control loop for maintaining good voltage regulation and achieving fast dynamic response under sudden load fluctuations. The stability of the above control loops are verified by using Bode diagram. Finally the proposed method is applied to 2 kW, 110 V, 50 Hz, two-stage single-phase standalone PV system. The simulation and the experimental results are presented to validate the theoretical analysis, effectiveness and feasibility of the proposed control strategy.
本文介绍了一个独立的光伏(PV)系统的建模和控制,其中电池被用作电源和负载之间的备用电源。铅酸电池由于其低成本和大尺寸可用性而被广泛应用于高功率光伏应用中。本文讨论了利用等效电路对光伏系统和铅酸蓄电池进行建模的方法。提出了三个独立的控制回路来控制独立的光伏系统;MPPT控制回路用于在不同太阳照射下提取光伏组件的最大功率,电池控制回路通过升压变换器实现电池与直流链路之间的双向功率流,以保持输入直流电压恒定,逆变器控制回路用于在负载突然波动下保持良好的电压调节并实现快速动态响应。利用波德图验证了上述控制回路的稳定性。最后将该方法应用于2kw, 110v, 50hz,两级单相独立光伏系统。仿真和实验结果验证了所提控制策略的理论分析、有效性和可行性。
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引用次数: 13
Inverse Optimal and Theta-D Control based near Optimal flight controller 基于近最优飞行控制器的逆最优和Theta-D控制
P. P, M. Nandakumar
The objective of this paper is to present a nonlinear flight control strategy, recommendable for the entire flight regime. Traditional controllers exhibit innate performance deficiencies in the widely varying aerodynamic scenario with substantially elevated control efforts. Therefore nonlinear optimality based control would be vital for the overall system performance. The prime feature of Inverse Optimal Control is that it guarantees asymptotic stability and optimality, globally, with respect to a performance index determined posteriori. The basis of Inverse Optimal control (IOC) rests on the formulation of an appropriate Control Lyapunov Function (CLF), the determination of which is in fact laborious in most cases. However here, the determination of CLF, for a particular class of nonlinear systems, is systematized to some extent. The 6 DOF aircraft dynamics separated into two timescales is considered for simulation study. The slow angular dynamics of the outer loop is controlled via Inverse Optimal Control. A suboptimal Theta-D controller is employed for the control of the fast inner loop. Thus in effect a near optimal control performance is expected of the resultant nonlinear control system. The inherent stability and robustness characteristic of the participating control laws will contribute the same to the overall system. Simulation results verify all the anticipated capabilities in terms of performance, optimality, stability and robustness.
本文的目标是提出一种适用于整个飞行状态的非线性飞行控制策略。传统的控制器在广泛变化的空气动力学场景中表现出固有的性能缺陷,大大提高了控制努力。因此,基于非线性最优性的控制对整个系统的性能至关重要。逆最优控制的主要特征是它保证了相对于后验确定的性能指标的全局渐近稳定性和最优性。逆最优控制(IOC)的基础在于适当的控制李雅普诺夫函数(CLF)的公式,在大多数情况下,它的确定实际上是费力的。然而,对于一类特殊的非线性系统,CLF的确定在一定程度上是系统化的。将6自由度飞机动力学分为两个时间尺度进行仿真研究。外环的慢角动力学采用逆最优控制。采用次优Theta-D控制器对快速内回路进行控制。因此,期望得到的非线性控制系统具有接近最优的控制性能。参与控制律的固有稳定性和鲁棒性将对整个系统做出相同的贡献。仿真结果验证了在性能、最优性、稳定性和鲁棒性方面的所有预期功能。
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引用次数: 0
Power system oscillation damping by intelligent power system stabilizer 智能电力系统稳定器对电力系统振荡的抑制
Sragdhara Bhattacharya
Power Systems are inherently non-linear systems that are frequently subjected to various disturbances causing oscillations at low frequencies that may lead to instability. Generators are usually provided with power system stabilizers minimize the effect of these oscillations. The objective of this paper is find the optimal parameters for a conventional “lead-lag compensator based Power System Stabilizer (PSS)” for a system comprising of a “generator connected to an infinite bus” and containing a ST1A type excitation system. The tuning of the parameters of the “Power System Stabilizer” is accomplished using the “Particle Swarm Optimization (PSO)” algorithm. In this paper, a Fuzzy Power System Stabilizer (FPSS) where the optimal values of the parameters of the FPSS are decided using the PSO algorithm is also designed. The Particle Swarm Optimization based conventional PSS and the “Particle Swarm Optimization based Fuzzy PSS” are also incorporated in a system containing multiple machines to check the system responses under different loading conditions and faults of different types. The simulation results clearly prove the efficiency of the PSO based conventional and fuzzy power system stabilizers in damping the low frequency speed and power oscillations occurring in the power system due to various disturbances.
电力系统本质上是非线性系统,经常受到各种干扰,导致低频振荡,可能导致不稳定。发电机通常配备电力系统稳定器,以尽量减少这些振荡的影响。本文的目标是为一个由“连接到无限母线的发电机”和包含ST1A型励磁系统组成的系统找到传统的“基于超前滞后补偿器的电力系统稳定器(PSS)”的最佳参数。采用“粒子群优化”算法对“电力系统稳定器”参数进行整定。本文还设计了一种模糊电力系统稳定器(FPSS),利用粒子群算法确定其参数的最优值。并将基于粒子群优化的传统PSS和基于粒子群优化的模糊PSS结合到多机系统中,对不同负载条件和不同类型故障下的系统响应进行了检验。仿真结果清楚地证明了基于粒子群的传统和模糊电力系统稳定器在抑制各种干扰引起的电力系统低频调速和功率振荡方面的有效性。
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引用次数: 7
PMU-ANN based real time monitoring of power system electromechanical oscillations 基于PMU-ANN的电力系统机电振荡实时监测
Abhilasha Gupta, K. Verma
Power system oscillations monitoring is a vital issue in operation of modern interconnected power systems. The existing methods for identifying the electromechanical modes are time-consuming and require modelling of the entire system that includes a large number of states and are performed offline. In this paper, an integrated Phasor Measurement Unit and Artificial Neural Network (PMU-ANN) based approach for online and real time monitoring of power system electromechanical oscillations is proposed. The placement of PMU is obtained using Integer Linear Programming (ILP). The data obtained from PMU is given as input to a multilayer Feedforward Neural Network (FFNN) and its output gives all the information related to the modes of the system and the mode ranking. The effectiveness of the proposed approach is investigated on IEEE 39-bus test system. The results show that the proposed approach is fast with less computational burden and is suitable for online and real time oscillations monitoring of the power systems under varying operating conditions.
电力系统振荡监测是现代互联电力系统运行中的一个重要问题。现有的机电模式识别方法耗时长,并且需要对包含大量状态的整个系统进行建模,并且需要离线执行。本文提出了一种基于相量测量单元和人工神经网络(PMU-ANN)的电力系统机电振荡在线实时监测方法。采用整数线性规划(ILP)方法求解PMU的位置。PMU获得的数据作为多层前馈神经网络(FFNN)的输入,其输出给出了与系统模式和模式排序相关的所有信息。在IEEE 39总线测试系统上验证了该方法的有效性。结果表明,该方法速度快,计算量小,适用于各种运行工况下电力系统的在线和实时振荡监测。
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引用次数: 13
Design and implementation of advanced auto calibrating line following sensor for coloured surfaces with a white line 设计和实现先进的自动校准线跟踪传感器的有色表面与白线
Samruddhi Patil, Ameya Wagh, Mitali Sawant, Saurav Panda, A. Bhopale
This paper discusses the design and implementation of a 7 channel line sensor for line following robot having advanced functionalities such as software based automatic sensor calibration and individual threshold per sensor channel. Unlike traditional line sensors which work on black surfaces with a white line or vice versa, this sensor is designed to differentiate white line on any coloured surface. Thus this sensor can be implemented in robotics applications or in industries where different section's floors are assigned with different colours and robot navigates using line following. The system was implemented using light emitting diodes, phototransistor and an onboard microcontroller Arduino Mega 2560 which communicates with any navigation control system using serial communication. Moving average filters are implemented per channel to remove the fluctuations in the readings due to vibration of the sensor during locomotion. It then gives the error feedback or the offset of the white line from the centre, to the system that is corrected using Proportional-Integral-Derivative algorithm. It also takes care of non scaled readings of the line sensors due to ambient light by having separate threshold values for individual sensors making each sensor independent. The main aim of this paper is to highlight the use and need of a line following sensor capable of differentiating any background colours with white line and at different light conditions. Performance metrics were measured and compared to show tradeoffs between cost and performance.
本文讨论了用于线路跟踪机器人的7通道线路传感器的设计和实现,该传感器具有基于软件的自动传感器校准和每个传感器通道的单独阈值等高级功能。不像传统的线传感器工作在黑色表面与白线,反之亦然,这种传感器是设计来区分白线在任何彩色表面。因此,这种传感器可以在机器人应用中实施,或者在不同部分的地板被分配不同的颜色,机器人使用线跟随导航的行业中。该系统使用发光二极管,光电晶体管和板载微控制器Arduino Mega 2560实现,该微控制器通过串行通信与任何导航控制系统通信。每个通道都实现了移动平均滤波器,以消除由于传感器在运动期间振动引起的读数波动。然后将误差反馈或白线离中心的偏移量反馈给使用比例-积分-导数算法进行校正的系统。它还通过对单个传感器具有单独的阈值,使每个传感器独立,从而照顾到由于环境光导致的线传感器的非缩放读数。本文的主要目的是强调使用和需要一个线跟随传感器能够区分任何背景颜色与白线和在不同的光条件。对性能指标进行测量和比较,以显示成本和性能之间的权衡。
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引用次数: 2
Multiple sliding surface controller based on disturbance observer for anti-lock braking system 基于扰动观测器的防抱死制动系统多滑动面控制器
V. Sharma, P. Chaudhari, P. Shendge, S. Phadke
This paper is concerned about the wheel slip measurement of the anti-lock braking system (ABS). The wheel slip must follow the desired wheel slip; for this purpose multiple sliding surface controller (MSSC) based on disturbance observer (DO) is used. DO is integrated with sliding mode controller (SMC) to strengthen the overall performance of the system by estimating the lumped uncertainties that are present in the system. The performance of the suggested scheme is testified in MATLAB/simulink with experimental set up of ABS by considering different cases for tracking the slip ratio.
本文研究了防抱死制动系统(ABS)的轮滑测量问题。轮滑必须遵循所要求的轮滑;为此,采用了基于扰动观测器(DO)的多滑动面控制器(MSSC)。DO与滑模控制器(SMC)相结合,通过估计系统中存在的集总不确定性来增强系统的整体性能。在MATLAB/simulink中,结合ABS的实验装置,考虑不同情况下的滑移率跟踪,验证了所提方案的性能。
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引用次数: 5
Tuning of Fractional Order PID controller using particle swarm optimization technique for DC motor speed control 基于粒子群优化技术的分数阶PID控制器整定及其在直流电机调速中的应用
R. Jain, M. Aware, A. Junghare
Design of Fractional Order PID controller (FOPID) for speed regulation of DC motor is presented in this paper. In comparison with conventional PID, FOPID is more flexible and trustworthy to control higher order systems. The FOPID exhibits the Iso-damping property to enhance the robustness of closed loop response of the system against gain variations. According to parameters adjustment problems of FOPID controller, particle swarm optimization (PSO) algorithm is adopted to optimize FOPID controller parameters. Peak overshoot, rise time and settling time are considered as important factors to minimize using PSO technique. Simulation results give validation of the proposed work and provide effectiveness of FOPID controller in terms of robustness and control effect as compared to PID controller.
介绍了一种用于直流电机调速的分数阶PID控制器的设计。与传统PID相比,FOPID在控制高阶系统方面具有更强的灵活性和可靠性。FOPID具有等阻尼特性,增强了系统对增益变化的闭环响应的鲁棒性。针对FOPID控制器参数调整问题,采用粒子群优化算法对FOPID控制器参数进行优化。峰值超调量、上升时间和沉降时间是影响PSO最小化的重要因素。仿真结果验证了所提出的工作,并证明了FOPID控制器与PID控制器相比在鲁棒性和控制效果方面的有效性。
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引用次数: 45
Finding optimal deceleration with serial regenerative braking of electric vehicle using a multi-objective genetic algorithm 采用多目标遗传算法求解电动汽车串联再生制动的最优减速度
D. Chakraborty, A. Nandi
To improve the fuel economy and range of an electric vehicle, as much as energy regeneration during braking is important. It was observed that driving harshness has a great impact on the regeneration efficiency during vehicle deceleration. On the other hand, to reduce the trip time as well as to avoid accident, the deceleration duration needs to be kept short. By realizing these conflicting objectives, in the present work an optimal deceleration is find out for a speed change using a genetic algorithm. The concerned multi-objective optimization problem (MOOP) was solved based on two approaches: considering a constant deceleration, and variable decelerations during braking. Comparative results of both the approaches are presented for a representative speed change in four driving cycles. Results of both approaches in solving the MOOP including under certain constraints, such as a desired comfort journey and maintaining a safe braking distance, suggest that multiple decelerations should be used during planned braking, where as either a constant or multiple deceleration may be taken during braking for high comfort journey and under emergency braking demand.
为了提高电动汽车的燃油经济性和行驶里程,制动过程中的能量再生非常重要。研究发现,在车辆减速过程中,驾驶粗糙度对再生效率有很大影响。另一方面,为了减少行程时间和避免事故,减速时间需要保持短。通过实现这些相互冲突的目标,本文采用遗传算法找出变速时的最优减速度。采用恒减速和变减速两种方法求解了多目标优化问题(MOOP)。在四个行驶工况下,给出了两种方法的比较结果。两种方法求解MOOP的结果,包括在一定的约束条件下,如期望的舒适行程和保持安全的制动距离,表明在计划制动时应使用多次减速,而在高舒适行程和紧急制动需求下,制动时可以采取恒定或多次减速。
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引用次数: 9
Study and optimization of characteristics of GaN based quantum well light emitting diode GaN基量子阱发光二极管特性的研究与优化
C. Jha, Vikas, S. Pandey
Effect of number of wells with different thicknesses of P layer on Internal Quantum Efficiency(IQE), I–V relationship, Power current, and spontaneous rate of blue InGaN/GaN multiple quantum well (MQW) light-emitting diodes (LEDs) is simulated and investigated with the help of APSYS software. Result reveals that LED with single Quantum well and thin P type Electron Blocking Layer (EBL) gives significantly good result for low injection level. For high injection level thick EBL and multiple Quantum well gives better result. At low injection level LED with single Quantum well shows IQE around 98.20 %.
利用APSYS软件模拟研究了不同P层厚度的阱数对蓝色InGaN/GaN多量子阱(MQW)发光二极管(led)内部量子效率(IQE)、I-V关系、功率电流和自发率的影响。结果表明,单量子阱和薄P型电子阻挡层(EBL)的LED在低注入水平下具有显著的良好效果。对于高注入水平,厚EBL和多量子阱具有较好的效果。在低注入水平下,单量子阱LED的IQE约为98.20%。
{"title":"Study and optimization of characteristics of GaN based quantum well light emitting diode","authors":"C. Jha, Vikas, S. Pandey","doi":"10.1109/ICPEICES.2016.7853312","DOIUrl":"https://doi.org/10.1109/ICPEICES.2016.7853312","url":null,"abstract":"Effect of number of wells with different thicknesses of P layer on Internal Quantum Efficiency(IQE), I–V relationship, Power current, and spontaneous rate of blue InGaN/GaN multiple quantum well (MQW) light-emitting diodes (LEDs) is simulated and investigated with the help of APSYS software. Result reveals that LED with single Quantum well and thin P type Electron Blocking Layer (EBL) gives significantly good result for low injection level. For high injection level thick EBL and multiple Quantum well gives better result. At low injection level LED with single Quantum well shows IQE around 98.20 %.","PeriodicalId":305942,"journal":{"name":"2016 IEEE 1st International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES)","volume":"IA-19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126560591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
2016 IEEE 1st International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES)
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