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Annual Conference of the IEEE Industrial Electronics Society

作者： Ming Fu Tiecai Li Donglai Zhang Yalin Li China Shenzhen Academy of Aerospace Technology Power Electronic and Motion Control Research Center Harbin Institute of Technology Shenzhen Graduate School Shenzhen Shenzhen China School of Electrical Engineering and Automation Harbin Institute of Technology Harbin China Electrical System Engineering Department Institute of Telecommunication Satellite China Academy of Space Technology Beijing China

Based on the battery charging and discharging regulator (BCDR) in spacecraft power conditioning unit application, a bidirectional DC-DC converter BCDR with high direction-changing frequency is proposed in this paper, including the Weinberg-buck bidirectional DC-DC topology and the corresponding bidirectional control. Additionally, the test on the BCDR prototype shows that BCDR parallel modules could achieve the quick switching between charging and discharging with the direction-changing frequency meeting the requirement of 1 kHz, the regulated power bus of small voltage ripple, and high charging and discharging efficiency, in agreement with the expected design.

关键词： Integrated circuits Partial discharges Switches Batteries Power conditioning DC-DC power converters Regulators

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Optimal power management for failure mode of MVDC microgrids in all-electric ships

arXiv

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arXiv 2017年

作者： Xu, Qimin Yang, Bo Han, Qiaoni Yuan, Yazhou Chen, Cailian Guan, Xinping Department of Automation Shanghai Jiao Tong University Shanghai200240 China Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration Shanghai200240 China Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai200240 China Institute of Electrical Engineering Yanshan University Qinhuangdao066004 China

Optimal power management of shipboard power system for failure mode (OPMSF) is a significant and challenging problem considering the safety of system and person. Many existing works focused on the transient-time recovery without consideration of the operating cost and the voyage plan. In this paper, the OPMSF problem is formulated considering the mid-time scheduling and the faults at bus and generator. Two-side adjustment methods including the load shedding and the reconfiguration are coordinated for reducing the fault effects. To address the formulated non-convex problem, the travel equality constraint and fractional energy efficiency operation indicator (EEOI) limitation are transformed into the convex forms. Then, considering the infeasibility scenario affected by faults, a further relaxation is adopted to formulate a new problem with feasibility guaranteed. Furthermore, a sufficient condition is derived to ensure that the new problem has the same optimal solution as the original one. Because of the mixed-integer nonlinear feature, an optimal management algorithm based on Benders decomposition (BD) is developed to solve the new one. Due to the slow convergence caused by the time-coupled constraints, a low-complexity near-optimal algorithm based on BD (LNBD) is proposed. The results verify the effectivity of the proposed methods and algorithms. Copyright © 2017, The Authors. All rights reserved.

关键词： Relaxation processes

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Reliability & security issues for IoT-based smart business center: Architecture & Markov model 3

Reliability & security issues for IoT-based smart business c...

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3rd International Conference on Mathematics and Computers in Sciences and in Industry, MCSI 2016

作者： Kharchenko, Vyacheslav Kolisnyk, Maryna Piskachova, Iryna Bardis, Nikolaos Department of Computer Systems and Networks National Aerospace University KhAI Kharkiv Ukraine Department of Automation and Control in Technical Systems National Technical University KPI Kharkiv Ukraine Department of Computer Science and Control System Ukrainian State University of Railway Transport Kharkiv Ukraine Department of Mathematics and Engineering Sciences Hellenic Military Academy Athens Vari16673 Greece

ISBN: (纸本)9781509009732

One of the key subsystems from point of view of security of the complex IoT system is the smart business center (SB?) system. Some problems the design and operation of the SBC system are analyzed. When analysis of safety of the IoT system must take into account the reliability and security of the system at several levels: The level of sensors, the level of communication (communication lines, router, switch), the server level as the control device of components of the network, the level of the entire SBC subsystem. General architecture of network of the SB? is described. Reliability and security of key SB? hardwareand software manufacturers are analysed. In particular, security issue for SB? routers is considered. Shown the Markov model, which takes into account the technical conditions of typical network components of the SBC with the presence of software vulnerabilities when exposed to hacker attacks. On this model's basis it is possible to conduct further researches directed for improving the reliability operation and safety of IoT. ©2016 IEEE.

关键词： Internet of things

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Analysis of underwater locomotion and improvement of FroBot

Analysis of underwater locomotion and improvement of FroBot

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2016 IEEE International Conference on Advanced Intelligent Mechatronics, AIM 2016

作者： Yi, Yang Jianqing, Zhang Han, Xu Maokuan, Chen Lu, Zhang Zhongjing, Zhu School of Automation Beijing Institute of Technology Beijing China State Key Laboratory of Intelligent Control and Decision of Complex System Beijing Institute of Technology Beijing China Department of Electronic Engineering School of Information Science and Technology Tsinghua University Beijing China

ISBN: (纸本)9781509020652

The main characteristic of FroBot is the dual-swing-legs propulsion mechanism, and it is necessary for us to conduct a series of experiments to study its propulsion model, both on land and underwater. As the propulsion of FroBot comes from the interaction force between caudal fins and water when it locomotes underwater, this paper presents an analysis about the propulsion and control of angle Θ. Then a number of underwater hydrodynamic simulations and analysis are also conducted to get a better control in reality. Finally, on the basis of propulsion model and experiments, we present the latest mechanical structure designs and further improvements to eliminate the limitations exposed in the previous generations of FroBot. © 2016 IEEE.

关键词： Propulsion

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Inverse-square law between time and amplitude for crossing tipping thresholds

arXiv

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arXiv 2017年

作者： Ritchie, Paul Karabacak, Özkan Sieber, Jan Earth System Science College of Life and Environmental Sciences University of Exeter Harrison Building ExeterEX4 4QF United Kingdom Department of Electronic Systems Automation and Control Aalborg University Fredrik Bajers Vej 7 C Aalborg East9220 Denmark Centre for Systems Dynamics and Control College of Engineering Mathematics and Physical Sciences University of Exeter Harrison Building ExeterEX4 4QF United Kingdom

A classical scenario for tipping is that a dynamical system experiences a slow parameter drift across a fold tipping point, caused by a run-away positive feedback loop. We study what happens if one turns around after one has crossed the threshold. We derive a simple criterion that relates how far the parameter exceeds the tipping threshold maximally and how long the parameter stays above the threshold to avoid tipping in an inverse-square law to observable properties of the dynamical system near the fold. For the case when the dynamical system is subject to stochastic forcing we give an approximation to the probability of tipping if a parameter changing in time reverses near the tipping point. The derived approximations are valid if the parameter change in time is sufficiently slow. We demonstrate for a higher dimensional system, a model for the Indian summer monsoon, how numerically observed escape from the equilibrium converge to our asymptotic expressions. The inverse-square law between peak of the parameter forcing and the time the parameter spends above a given threshold is also visible in the level curves of equal probability when the system is subject to random disturbances. Copyright © 2017, The Authors. All rights reserved.

关键词： Dynamical systems

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Enhancing BEM simulations of a stalled wind turbine using a 3D correction model

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Journal of Physics: Conference Series 2018年第1期974卷

作者： Galih Bangga Go Hutomo Taurista Syawitri Tri Kusumadewi Winda Oktavia Ahmad Sabila Herlambang Setiadi Muhamad Faisal Yongki Hendranata Dwi Lastomo Louis Putra Stefanus Kristiadi Ilmi Bumi Institute of Aerodynamics and Gas Dynamics University of Stuttgart Stuttgart Germany Mechanical Engineering Department Institut Teknologi Sepuluh Nopember Surabaya Indonesia Toyota SO Department Astra International Ltd. Indonesia Mechanical Engineering Department Universitas Muhammadiyah Surakarta Surakarta Indonesia School of Manufacturing System and Mechanical Engineering Sirindhorn International Institute of Technology Thammasat University Thailand Project Support and Cost Control Division Indoturbine Ltd. Jakarta Indonesia Civil Engineering Department Universitas Brawijaya Malang Indonesia School of Information Technology & Electrical Engineering The University of Queensland Brisbane Australia Non-Installation Top Range Department Berca Schindler Lifts Ltd. Indonesia Graduate Institute of Automation and Control National Taiwan University of Science and Technology Taiwan Mechanical Engineering Department Texas A&M University College Station United States PUI-PT Mechatronics and Industrial Automation Research Center Intitut Teknologi Sepuluh Nopember Surabaya Indonesia Mechanical Engineering Department Politecnico di Milano Milan Italy Aeronautics Department Imperial College of Science Technology and Medicine London United Kingdom Materials Engineering Department Institut Teknologi Sepuluh Nopember Surabaya Indonesia

Nowadays wind turbine rotors are usually employed with pitch control mechanisms to avoid deep stall conditions. Despite that, wind turbines often operate under pitch fault situation causing massive flow separation to occur. Pure Blade Element Momentum (BEM) approaches are not designed for this situation and inaccurate load predictions are already expected. In the present studies, BEM predictions are improved through the inclusion of a stall delay model for a wind turbine rotor operating under pitch fault situation of -2.3° towards stall. The accuracy of the stall delay model is assessed by comparing the results with available Computational Fluid Dynamics (CFD) simulations data.

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Thoughts and Analysis of Some Problems in the Hydraulic control system Design with the WBD

Thoughts and Analysis of Some Problems in the Hydraulic Cont...

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2016 IEEE/CSAA International Conference on Aircraft Utility systems(AUS)

作者： Jiang Huijun Qin Cheng Shang Yaoxing Liu Xiaochao Department of Flight Control and Hydraulic System AVIC the First Aircraft Institute School of Automation Science and Electrical Engineering Beihang University

This paper presents the system works,solution of the limited hydraulic source with the velocity inner loop,and the system optimal design method of reduction *** modeling and simplifying the system,the static and dynamic characteristics are analyzed,and the selecting requirements of affecting its parameters are proposed.A method is raised to reduce the peak pressure of the hydraulic drive unit(PDU) inlet and outlet pipes and its internal motor.

关键词： PDU Thoughts and Analysis of Some Problems in the Hydraulic control system Design with the WBD

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Design and Validation of Hydraulic Pump system Driven by the Electromotor under the High-Power and Long-Time Working state in An Airborne

Design and Validation of Hydraulic Pump System Driven by the...

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2016 IEEE/CSAA International Conference on Aircraft Utility systems(AUS)

作者： Huijun Jiang Zhenshui Li Hong Liu Zongxia Jiao Yaoxing Shang Xiaochao Liu Department of Flight Control and Hydraulic System AVIC the First Aircraft Institute School of Automation Science and Electrical Engineering Beihang University

This paper introduced a type of aircraft electric hydraulic pump system working principle,the key points of the system are analyzed and described,including calculation of boost pressure,system oil temperature control design,environmental temperature checking,starting logic design,the system validation and verification methods are *** system passed through the ground test and flight time Validation,and worked well and reliably.

关键词： boost Design and Validation of Hydraulic Pump system Driven by the Electromotor under the High-Power and Long-Time Working state in An Airborne

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Simulation Modeling of Adaptive Dumping Forced Oscillations Combined control system

Simulation Modeling of Adaptive Dumping Forced Oscillations ...

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International Siberian Conference on control and Communications

作者： Eugenie L. Eremin Evgeniy A. Shelenok Information and Control Systems Department Amur State University Blagoveshchensk Russia Automation and System Engineering Department Pacific National University Khabarovsk Russia

Article deals with research problem of control system for damping object oscillations using active hydro bearing functioning. With the simulation the behavior of the system in the presence of various external harmonic... 详细信息

ISBN: (纸本)9781467383844

关键词： adaptive control active hydro bearing: serial dynamic corrector hyperstability criterion piezoelectric sensor simulation modeling

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Adaptive-Periodic control for Nonlinear Dynamic Object with Delays on State Set of Functioning

Adaptive-Periodic Control for Nonlinear Dynamic Object with ...

引用

International Siberian Conference on control and Communications

For a priori undetermined nonlinear multi-mode dynamic object with several statement delays and the relative order greater than one, it offers a combined adaptive control system, synthesized using the hyperstability c... 详细信息

ISBN: (纸本)9781467383844

关键词： component control system combined regulator periodic signals generator dynamic corrector hyperstability criterion L-dissipativity delay

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