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IEEE International Conference on Emerging Technologies and Factory automation

作者： Rilene Carolina Goelzer Letieri ávila Deliel Oliveira Vinícius M. de Oliveira Control and Automation Engineering Federal University of Rio Grande Rio Grande RS Brasil Graduate Program in Computer Engineering Federal University of Rio Grande Rio Grande RS Brasil Universidade Federal do Rio Grande Rio Grande RS BR

Aquaculture has resorted to the use of technology to make control of important variables and improve production. There were two problems observed in the Marine Aquaculture Station - EMA of the Federal University of Rio Grande, more specifically related to the aeration of the culture tanks to pisciculture and carniciculture. Firstly, the high energy consumption of the paddle aerators was identified, due to the continuous need to oxygenate the water. Subsequently, it was noted that static aerators do not aerate the water evenly and they require that their placement be done manually by technicians or assistants. Thus, the article proposes a design of an autonomous aerator with electric power coming from a photovoltaic solar energy system. In the sequence, a navigation system for the aerator is proposed along the tank, based on a differential performance of the motors connected to the paddle.

关键词： Solar Energy Aquaculture Aerator control

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Design, implementation and control of dual axis self balancing inverted pendulum using reaction wheels

Design, implementation and control of dual axis self balanci...

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International Conference on electrical and Electronics engineering, ELECO

作者： Abdullah Türkmen M. Yusuf Korkut Mustafa Erdem Ömer Gönül Volkan Sezer Mechatronics Graduate Program Istanbul Technical University Istanbul TURKEY Energy Institute Istanbul Technical University Istanbul TURKEY Dept. of Control and Automation Engineering Istanbul Technical University Istanbul TURKEY

Inverted pendulum systems have an important place in practice for control problems due to their nonlinear structures. It is a very difficult task to control the orientation and speed of objects and robots which are free in three dimensions. These systems constitute the substructure of many advanced systems. Conventional actuators may not be used in such applications due to various limitations. Under these circumstances usage of reaction wheels come into prominence. Reaction wheel based systems are used for orienting, coordinating and balancing of spacecraft, transport systems, and other such systems. In this study, dual axis self-balancing reaction wheel based inverted pendulum system which is a basis for many complex systems has been designed, manufactured and controlled.

关键词： Wheels Mathematical model DC motors Gravity State feedback Torque Aluminum

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Reliability assessment in photovoltaic nanogrids by means of Principal Components Analysis

Reliability assessment in photovoltaic nanogrids by means of...

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2016 IEEE Power and Energy Society General Meeting, PESGM 2016

作者： Dominguez, Edwin Xavier Arboleya, Pablo Control and Automation Department National Polytechnic School Quito Ecuador Department of Electrical Engineering University of Oviedo Gijón Spain

ISBN: (纸本)9781509041688

The microgrid reliability assessment is gaining notorious attention as distributed generation systems are being increasingly installed. The conventional approach to perform this analysis is by means of the Monte Carlo method which may lead to long-lasting simulations when elaborated models are considered. To reduce the overall simulation time, this paper combines a detailed analytical microgrid modeling with the use of modern multivariate data processing tools such as Principal Components Analysis and artificial intelligence to rapidly and accurately forecast the power reliability indices of the system. © 2016 IEEE.

关键词： Principal component analysis

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Modeling and Simulation of Photovoltaic Grid-connected Inverter

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IOP Conference Series: Materials Science and engineering 2018年第1期466卷

作者： Wenhao Zhang Xianglian Xu Sunong Yao Muyao Deng Department of Electrical Engineering and Automation School of Automation Wuhan University of Technology Wuhan and 430070 Hubei Province China. Wuhan University of Technology National University Student Innovation and Entrepreneurship Training Program Project funding. Item Number: ***

Based on the topology of diode clamped three-level inverter, this paper introduces the working principle and control method of the inverter. This paper focuses on the midpoint potential balance problem and PWM control method of Diode-clamped three-level inverter and the SVPWM control method developed thereby. In this paper, the analysis of inverter topology and control method is focused on the maximum power point tracking problem and phase-locked loop problem in photovoltaic grid-connected process. This paper proposes a complete system for photovoltaic grid connection using inverters. At the end of this paper, the results of simulation and analysis of the system using computer software are given.

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A smooth changeover method of the hybrid control strategy for five-level active NPC converter 7

A smooth changeover method of the hybrid control strategy fo...

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7th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2016

作者： Hu, Cungang Wang, Qunjing Li, Guoli Jun, Hu Luo, Fanglin School of Electrical Engineering and Automation Anhui University Hefei230601 China National Engineering Laboratory of Energy-Saving Motor and Control Technology Hefei230601 China School of Electrical and Electronic Engineering Nanyang Technological University 639798 Singapore

ISBN: (纸本)9781467386166

Pulse-width-modulation (PWM) method is a crucial technique to construct multilevel converter. A hybrid PWM combining the merits of both space vector PWM (SVPWM) and selective harmonic elimination PWM (SHEPWM) is proposed for the five-level active neutral-point clamped converter. SVPWM can lead to high DC voltage utilization and low ripple current at low frequency band. SHEPWM can eliminate specific low-order harmonics at high frequency band. After implementing SHEPWM, the remaining high-order harmonics can be easily eliminated by the designed filter. Large vibration usually happens to the changeover of two modulation methods. A control strategy is proposed in this paper to implement the smooth changeover between SHEPWM and SVPWM at any time. The simulation and experimental results are provided to verify the effectiveness of this control strategy. © 2016 IEEE.

关键词： Pulse width modulation

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Data Driven Multiagent Systems Consensus Tracking Using Model Free Adaptive control

Data Driven Multiagent Systems Consensus Tracking Using Mode...

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第28届中国控制与决策会议

作者： Bu Xuhui Hou Zhongsheng Liang Jiaqi Xu Piaopiao School of Electrical Engineering & Automation Henan Polytechnic University Advanced Control Systems Lab School of Electronics and Information EngineeringBeijing Jiaotong University

ISBN: (纸本)9781467397155

This paper proposes a distributed model free adaptive control scheme that can be applied to multi-agent systems to solve consensus tracking problem under the fixed communication *** agent's dynamics are modeled by unknown nonlinear *** addition,the desired consensus trajectory is only accessible to a subset of the *** introducing the concept pseudo-partial derivative,the dynamical linearization model of each agent has been established and then the distributed model free adaptive control scheme has been designed to enable all agents to achieve the desired *** main feature of the approach is that consensus tracking control can be solved only depending on the I/O data of each *** the theoretical analysis,it is shown that tracking error is convergent and output and control input sequences are *** illustrative example is given to demonstrate the effectiveness of the proposed design methods.

关键词： Model Free Adaptive control Multi-agent systems Consensus tracking Data driven design

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Research on the Income Mechanism and Investment Strategy of Additional Heat Source in Combined Heat and Power System

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IOP Conference Series: Materials Science and engineering 2018年第3期452卷

作者： Xuan Zhang Jianping Li Zhongkai Yi Qi Guo Guangdong Power Grid Dispatching Control Center Guangzhou China Guangdong Baolihua electric power limited company Meizhou China School of Electrical Engineering and Automation Harbin Institute of Technology Harbin China

Utilization of additional heat sources (AHS), such as electric boilers and heat storage tanks, is an effective way to promote the wind power consumption in large scale combined heat and power system (CHPS) in northern China. To promote the construction and operation of the AHS, this paper proposed a market mechanism that thermal power plant and wind farm share the benefits and investment risks of AHS together. A novel market mechanism of AHS including income mechanism and investment strategy is proposed. Under this market mechanism, the following aspects are studied: (1) The cost and income model of each subject is derived; (2) The feasible region of invest and income proportion of each participant is analysed; (3) The optimal investment strategy of multi participates is built. At last, actual example simulations is conducted to demonstrate the effectiveness of the proposed market mechanism. Simulation results show that the proposed method can arouse the enthusiasm of wind farm and thermal power plant and promote the construction and operation of the AHS, which has a certain significance to promote wind power consumption in combined heat and power system.

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Path planning for UAVS Based on Improved Artificial Potential Field Method through Changing the Repulsive Potential Function

Path planning for UAVS Based on Improved Artificial Potentia...

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2016 IEEE Chinese Guidance, Navigation and control Conference (IEEE CGNCC2016)

作者： Liu Lifen Shi Ruoxin Li Shuandao Wu Jiang School of Automation Science and Electrical Engineering Beihang University science and technology on Aircraft Control Laboratory Beihang University

ISBN: (纸本)9781467383196

Unmanned Aerial Vehicles(UAVS) are aircrafts without human pilots *** are attracting increasing attention in recent years because of their important contribution and cost effective application in many *** to find a safe and collision-free path in the environment with obstacles is always an important issue in Unmanned Aerial Vehicles(UAVS).In order to solve the problem of path planning for UAV in dynamic environment,this paper proposes a path planning method with an improved artificial potential field to overcome the local minimum *** to detects of the artificial potential field,this paper improves the APF through changing the repulsive potential *** performance of simulation shows that the improved APF method can help the UAV avoid collisions with obstacles effectively and find the optimal path relatively from the start to the goal by choosing a proper m.

关键词： Unmanned Aerial Vehicles(UAVS) path planning dynamic environment artificial potential field avoid collision

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Modular Fault Diagnosis in Fixed-Block Railway Signaling Systems

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IFAC-PapersOnLine 2016年第3期49卷 459-464页

作者： Durmus, Mustafa S. Ustoglu, lker Tsarev, Roman Y. Schwarz, Michael Electrical and Electronics Engineering Department Pamukkale University Denizli Turkey Control and Automation Engineering Department Yildiz Technical University Istanbul Turkey Institute of Space and Information Technology Siberian Federal University Krasnoyarsk Russia Computer Architecture and System Programming Kassel University Kassel Germany

The diagnosis of possible faults in railway signaling systems is an important issue to provide safe travel and transportation in railways. Signaling system designers have to consider the possible faults which may occur in railway field components both on the requirements preparation phase and on the development phase of the signaling system software or namely, the interlocking system. Although the diagnosis of different unobservable faults is relatively hard, especially for large scale railway fields, this complexity can be overcome by using the Discrete Event System (DES) based modular diagnosis approach which is explained in this paper. The main advantage of using such modular approach for fault diagnosis in fixed-block signaling systems is the inspection of the diagnosability of the whole system with respect to its subsystems (railway field components). In this study, the diagnosability of the railway field equipment and the whole system is also explained with a case study. © 2016

关键词： Fault detection Discrete event simulation Failure analysis Railroad signal systems Railroads Signaling Development phase Field components Field equipment Fixed block signaling Interlocking systems Modular approach Railway signaling systems Signaling systems

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Elimination of chaos in a light-emitting diode system with optoelectronic feedback 3rd

Elimination of chaos in a light-emitting diode system with o...

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3rd Annual International Conference on Material Science and Environmental engineering, ICMSEE 2015

作者： Qin, Y. Liu, B. Wang, X. Han, C. Che, Y. Tianjin Key Laboratory of Information Sensing and Intelligent Control School of Automation and Electrical Engineering Tianjin University of Technology and Education Tianjin China

ISBN: (纸本)9781138029385

We present numerical simulations of a three-dimensional model of a light-emitting diode with ac-coupled nonlinear optoelectronic feedback, where chaos can occur in the original model within a wide range of the voltage threshold parameter. We propose two simple methods to eliminate chaos. One is to introduce a time delay in the feedback loop, and the other one is to increase the feedback gain without delay. The effectiveness of the proposed methods is demonstrated using bifurcation diagrams and the underlying mechanisms are discussed. © 2016 Taylor and Francis Group, London.

关键词： Time delay

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