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IEEE International Conference on Cyber Technology in Automation, control, and intelligent systems

作者： Ming Wang Shi Qiu Guiqing Zhang Junzhi Yu Yuling Wang School of Information and Electrical Engineering Shandong Jianzhu University State Key Lab. of Management and Control for Complex Systems Institution of Automation Chinese Academy of Sciences

ISBN: (纸本)9781538604915

It is a key issue in building operation management how to design an open and ubiquitous information system for diversity buildings of smart cities. This paper presents an operation management cloud ecosystem for smart buildings based on the technologies of Internet of Things (IoT) and cloud computing. It contains four levels: operation management application level, Internet of things platform, networking level, node level. The IoT platform provides hosting and computing, cloud storage, data storage for smart buildings. Networking level takes the responsibility for networking for intelligent hardware and smart terminals from the device level. With the building operation management applications, the cloud ecosystem is able to provide services of monitoring, controlling, management, and real-time optimization for smart buildings in cities.

关键词： intelligent buildings Internet of things organisation and administration Computer based information systems Thing Internets Clouds Building construction Networking Cloud Computing

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Convergence Analysis of Quantized Iterative Learning control Using Lifting Representation 35

Convergence Analysis of Quantized Iterative Learning Control...

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第35届中国控制会议

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

ISBN: (纸本)9781509009107

This paper considers the convergence of iterative learning control(ILC) for discrete time systems with data quantization. Two iterative learning control schemes are proposed by using the system output quantized signal and tracking error quantized signal. Based on the super-vector formulation of the ILC systems, the convergence conditions for the two iterative learning control schemes are given respectively. It is shown that the ILC law with system output quantized signal only make the tracking error converge to a bound, thus the ILC law with tracking error quantized signal can obtain zero tracking error. The results are illustrated by a numerical example.

关键词： iterative learning control super-vector formulation data quantization discrete time system

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An MPC walking framework with external contact forces

arXiv

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arXiv 2017年

作者： Mason, Sean Rotella, Nicholas Schaal, Stefan Righetti, Ludovic Computational Learning and Motor Control Lab. University of Southern California Los AngelesCA United States Autonomous Motion Department Max Planck Institute for Intelligent Systems Tuebingen Germany Tandon School of Engineering New York University New York United States

In this work, we present an extension to a linear Model Predictive control (MPC) scheme that plans external contact forces for the robot when given multiple contact locations and their corresponding friction cone. To this end, we set up a two-step optimization problem. In the first optimization, we compute the Center of Mass (CoM) trajectory, foot step locations, and introduce slack variables to account for violating the imposed constraints on the Zero Moment Point (ZMP). We then use the slack variables to trigger the second optimization, in which we calculate the optimal external force that compensates for the ZMP tracking error. This optimization considers multiple contacts positions within the environment by formulating the problem as a Mixed Integer Quadratic Program (MIQP) that can be solved at a speed between 100-300 Hz. Once contact is created, the MIQP reduces to a single Quadratic Program (QP) that can be solved in real-time ( Copyright © 2017, The Authors. All rights reserved.

关键词： Model predictive control

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controller design and sensitivity analysis for active disturbance rejection control

Boletin Tecnico/Technical Bulletin

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Boletin Tecnico/Technical Bulletin 2017年第19期55卷 505-513页

作者： Zhao, Chunzhe Xu, Rong Xiong, Jiang Xiao, Yanxia Key Lab. of Intelligent Info. Proc. and Contr. of Chongqing Munic. Institutions of Higher Education Chongqing Three Gorges University Wanzhou Chongqing404100 China Chongqing Engineering Research Center of Internet of Things and Intelligent Control Technology Chongqing Three Gorges University Wanzhou Chongqing404100 China

The sensitivity function is discussed for the linear time-invariant SISO minimum-phase system with unknown order and uncertain relative degree, which is under the active disturbance rejection control (ADRC). The design of the ADRC scheme is also discussed. It is proved that ADRC can guarantee the closed-loop stability when the relative degree of the system is bounded. The numerical examples demonstrate that the ADRC scheme can be applied to the different systems without retuning the parameters.

关键词： Sensitivity analysis

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Impact of Brillouin amplification on the spatial resolution of noise-correlated Brillouin optical reflectometry

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Chinese Optics Letters 2017年第8期15卷 17-21页

作者：张明江鲍晓毅柴晶张永宁刘瑞霞刘慧刘毅张建忠 Key Lab of Advanced Transducers and Intelligent Control Systems Ministry of Education and Shanxi Province Taiyuan 030024 China Institute of Optoelectronic Engineering College of Physics&Optoelectronics Taiyuan University of Technology Taiyuan 030024 China Fiber Optics Group Department of Physics University of Ottawa Ottawa K1N 6N5 Canada

Distributed optical fiber sensors have been widely used to monitor temperature, strain, vibration, and so on. Specifically, the sensors based on Brillouin scattering have been studied extensively to measure the strain... 详细信息

关键词： Impact of Brillouin amplification on the spatial resolution of noise-correlated Brillouin optical reflectometry DFB length EDFA PRBS BFS

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A usage-based transmission cost allocation scheme considering impacts of DERs

A usage-based transmission cost allocation scheme considerin...

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2016 Tsinghua University-IET Electrical engineering Academic Forum

作者： Wang, J.X. Zhong, H.W. Xia, Q. State Key Lab. of Control and Simulation of Power Systems and Generation Equipments Department of Electrical Engineering Tsinghua University Beijing China

ISBN: (纸本)9781785614170

With the rapid development of distributed energy resources (DERs), it is of vital importance to develop a well-designed transmission cost allocation scheme to reflect the contributions of DERs to the power system. In this paper, a usage-based transmission cost allocation scheme is proposed considering the capability of DERs. Based on the different intentions of transmission capacity, the transmission costs can be classified into four fractions: operating, contingency, planning and invalid transmission costs. On operating conditions, the transmission costs are identified and allocated according to the actual usage of consumers at each node. On contingency conditions, the transmission cost allocation will be influenced by the behaviors of DERs since DERs can provide emergent power support to help alleviate transmission congestion. On planning conditions, the transmission costs are useful in the future. The residual costs, i.e., the invalid transmission costs, should not allocated by consumers because this fraction is caused by the over investment of transmission owners. The case studies based on the IEEE 30-bus system validates the effectiveness of the proposed scheme and model. © 2016, Institution of engineering and Technology. All rights reserved.

关键词： Investments

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An investigation of phase transitions in single-machine scheduling problems 27

An investigation of phase transitions in single-machine sche...

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27th International Conference on Automated Planning and Scheduling, ICAPS 2017

作者： Wang, Zhihui O'Gorman, Bryan Tran, Tony T. Rieffel, Eleanor G. Frank, Jeremy Do, Minh Quantum Artificial Intelligence Lab. NASA Ames Research Center Moffett FieldCA United States Intelligent Systems Division NASA Ames Research Center Moffett FieldCA United States Universities Space Research Association Mountain ViewCA United States Stinger Ghaffarian Technologies Inc. GreenbeltMD United States Department of Mechanical and Industrial Engineering University of Toronto TorontoON Canada

ISBN: (纸本)9781577357896

We investigate solvable-unsolvable phase transitions in the single-machine scheduling (SMS) problem. SMS is at the core of practical problems such as telescope and satellite scheduling and manufacturing. To study the solvability phase transition, we construct a variety of instance families parameterized by the set of the processing times, the window size (deadline minus release time), and the horizon. We empirically establish the phase transition and look for an easy-hardeasy pattern for this family using several common solvers. While in many combinatorial problems a phase transition coincides with typically hard instances, whether or not that is the case with SMS remains an open question, and merits further study. Copyright © 2017, Association for the Advancement of Artificial Intelligence (***). All rights reserved.

关键词： Machinery

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Power system state estimation via feasible point pursuit: Algorithms and Cramér-Rao bound

arXiv

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arXiv 2017年

作者： Wang, Gang Zamzam, Ahmed S. Giannakis, Georgios B. Sidiropoulos, Nicholas D. Digital Tech. Center ECE Dept. U. of Minnesota MplsMN55455 United States State Key Lab. of Intelligent Control and Decision of Complex Systems Beijing Inst. of Tech. Beijing100081 China

Accurately monitoring the system's operating point is central to the reliable and economic operation of an electric power grid. Power system state estimation (PSSE) aims to obtain complete voltage magnitude and angle information at each bus given a number of system variables at selected buses and lines. Power flow analysis is a special case of PSSE, and amounts to solving a set of noise-free power flow equations. Physical laws dictate quadratic relationships between availab.e quantities and unknown voltages, rendering general instances of power flow and PSSE nonconvex and NP-hard. Past approaches are largely based on gradient-type iterative procedures or semidefinite relaxation (SDR). Due to nonconvexity, the solution obtained via gradienttype schemes depends on initialization, while SDR methods do not perform as desired in challenging scenarios. This paper puts forth novel feasible point pursuit (FPP)-based solvers for power flow and PSSE, which iteratively seek feasible solutions for a nonconvex quadratically constrained quadratic programming (QCQP) reformulation of the weighted least-squares (WLS) problem. Relative to the prior art, the developed solvers offer superior performance at the cost of higher complexity. Furthermore, they converge to a stationary point of the WLS problem. As a baseline for comparing different estimators, the Cramér-Rao lower bound (CRLB) is derived for the fundamental PSSE problem in this paper. Judicious numerical tests on several IEEE benchmark systems showcase markedly improved performance of our FPPbased solvers for both power flow and PSSE tasks over popular WLS-based Gauss-Newton iterations and SDR approaches. Copyright © 2017, The Authors. All rights reserved.

关键词： State estimation

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Analysis of Key Factors in Heat Demand Prediction with Neural Networks

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Energy Procedia 2017年 105卷 2965-2970页

作者： Jiyang Xie Hailong Li Zhanyu Ma Qie Sun Fredrik Wallin Zhongwei Si Jun Guo Pattern Recognition and Intelligent Systems Lab. Beijing University of Posts and Telecommunications China School of Business Society and Engineering Mälardalen University Sweden Institute of Thermal Science and Technology Shandong University China Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications China

The development of heat metering has promoted the development of statistic models for the prediction of heat demand, due to the large amount of availab.e data, or big data. Weather data have been commonly used as input in such statistic models. In order to understand the impacts of direct solar radiance and wind speed on the model performance comprehensively, a model based on Elman neural networks (ENN) was adopted, of which the results can help heat producers to optimize their production and thus mitigate costs. Compared with the measured heat demand, the introduction of wind speed and direct solar radiation has opposite impacts on the performance of ENN and the inclusion of wind speed can improve the prediction accuracy of ENN. However, ENN cannot benefit from the introduction of both wind speed and direct solar radiation simultaneously.

关键词： District heating data processing prediction heat demand CHP plant

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Design and dynamic analysis for Amoeba-like roboţs turning-mechanism applied with spring and damp system

Design and dynamic analysis for Amoeba-like roboţs turning-...

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2016 International Conference on Advanced Robotics and Mechatronics, ICARM 2016

作者： Dong, Xiang Sun, Henghui Wang, Zengfu Cheng, Long Institute of Intelligent Machines Chinese Academy of Sciences Hefei230031 China State Key Lab. of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing100190 China

ISBN: (纸本)9781509033645

A new turning-mechanism for Amoeba-like Robot was proposed in this paper, which based on the amoeba-like robot kinematics characteristics of tail contracting and skin flipping. First, one kind of variable-speed node composed of the spring and damp was designed. Because of the existing of the variable-speed nodes, the velocities of the two strip-skins depended not only on the velocities of threads that gone through the variable-speed nodes, but also on the spring and damp it contained. So, although the velocities of threads that induced the velocities of the strip-skins were the same, the velocities of the strip-skins still can be different since the variable-speed nodes existed. That difference in velocities made the turning movement possible. Second, the dynamic model for the turning movement of the Amoeba-like Robot was established and analyzed. The analysis results included the angular velocity and angle curve related to time, which were computed with the dynamic model when shortening speed of threads length was constant. The results achieved in this paper provided an important basic for the research on the behaviors and control strategy of amoeba-like robot. The new turning-mechanism can be popularized to the tracked mobile robot, for it provided a new and availab.e turning method. © 2016 IEEE.

关键词： Velocity

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