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检索条件"任意字段=International Conference on Complex Systems: Control and Modeling Problems"

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Research on the Co-simulation System of Subway control Circuits 6

Research on the Co-simulation System of Subway Control Circu...

引用

2023 6th international conference on Circuits, systems and Simulation, ICCSS 2023

作者： Lu, Yinfeng Zhang, Wenchuan Qian, Xuejun Luo, Jiacheng College of Electronic and Information Engineering Tongji University Shanghai China

In order to solve the problems of complex control logic and the difficulty of simulating function modules due to the high coupling degree of subway control circuits, a subway control circuit co-simulation system is designed in this paper. By analysing the components data and connection relationship in the subway control circuit schematic diagrams, the network topologies are automatically generated, and the mathematical relationships between nodes, branches and components states are established, so as to build a complete logical control model. The depth-first search (DFS) algorithm is adopted to search the effective path across the topology, the event management unit is added to solve the linkage control of the relay, and the logic function simulation of the function module is realized by embedded script. Finally, the feasibility of the simulation system is verified through the simulation test of the subway door control circuits and the analysis of the simulation results. The system is conducive to the functional test and algorithm verification at the subway design stage, and has a good application prospect in the field of subway driver training. © Published under licence by IOP Publishing Ltd.

关键词： Timing circuits

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Optimal P-Q control of Solar Photovoltaic Based Microgrids with Battery storage

Optimal P-Q Control of Solar Photovoltaic Based Microgrids w...

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IEEE international conference on Innovations in Power and Advanced Computing Technologies

作者： Nayak, Pravati Patel, Trupty Munda, Nikhil Mallick, Ranjan Kumar Siksha O Anusandhana Deemed Be Univ Elect & Elect Engn Bhubaneswar Odisha India

ISBN: (纸本)9781538681909

This paper pays an attention to design an optimal controller for PV based microgrid with battery storage. Active and reactive power are the most sensitive parameters which need to be controlled, when there is disturbances(i.e. transient disturbance) in the power grid. A set of P-I controller is present to control the active power and reactive power of the system. It is a tedious work to tune up these PI gains optimally due to the non-linearity and the high complexity of the system. Out of the different methods for solving optimal control problems (whether direct or indirect), Evolutionary algorithm is one. In this paper, concurrently control of reactive power and active power is analyzed by an recently reported metaheuristics technique known as Lightning Search Algorithm, to design the optimal P-Q controllers. The control algorithms are tested with distribution system with presence of fault and without fault. The results shows that the proposed algorithm is efficient to find the optimal parameters of the controllers. The simulations studies are carried out in MATLAB and Simpower systems.

关键词： Optimal control solar cell modeling Microgrid Lighting Search Algorithm(LSA)

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An Approach to Formation control of UAVs Based on Applying Adapted Kohonen Neural Network

An Approach to Formation Control of UAVs Based on Applying A...

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2023 IEEE Ural-Siberian conference on Biomedical Engineering, Radioelectronics and Information Technology, USBEREIT 2023

作者： Khachumov, Mikhail Ailamazyan Program Systems Institute of Ras Intelligent Control Laboratory Pereslavl-Zalessky Russia Federal Research Center' Computer Science and Control' of Ras Moscow Russia

ISBN: (纸本)9798350336054

The paper gives a statement and considers the solution of an urgent scientific problem of formation control for a group of unmanned aerial vehicles (UAVs) operating in an unstable environment. To construct the reference trajectories and allocate UAVs to positions of a given structure, an original approach is proposed based on the adapted Kohonen neural network with a set of metrics, including Euclidean, Mahalanobis and Euclidean-Mahalanobis distances. To implement the movement of a UAV group in a complex environment, we apply the principles of intelligent-geometric control, which allows to combine flexible intelligent and precise geometric control methods within one concept. When moving along a given route, UAVs use a set of allowable control strategies. The developed modeling scheme is designed to take into account wind loads and possibly dangerous rapprochement of vehicles. To reflect the dynamics of UAVs, a special module is used that contains transfer functions integrated into a single stabilization system with an autopilot. The proposed approach has shown promise when simulating a series of formation control problems. © 2023 IEEE.

关键词： Unmanned aerial vehicles (UAV)

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Effect of Intrinsic Elasticity and Damping Coefficients Variations on Balance Maintaining by Human 23

Effect of Intrinsic Elasticity and Damping Coefficients Vari...

引用

23rd international Carpathian control conference (ICCC)

作者： Kot, Andrzej Nawrocka, Agata AGH Univ Sci & Technol Dept Proc Control Krakow Poland

ISBN: (纸本)9781665466363

Maintaining balance by a person, despite the fact that it seems to be something completely natural, is a very complex process. It begins with a deep feeling, i.e. proprioception, resulting from the operation of the nervous system, which registers even slight movements of the body from an upright standing position and reacts to these deviations by activating appropriate strategies to regain balance. It is realized by sequential activation of antagonistic muscles, which, acting alternately, are responsible for correcting the posture. In such a case, when one of the muscles is responsible for initiating the movement, the other, acting in the opposite way, tries to slow down the movement. With appropriate simplifications, such a system can be presented as a mechanical system in the form of an inverted pendulum with an appropriate number of degrees of freedom. The antagonistic work of muscles in mathematical models of such systems is taken into account by using elastic and damping elements. It should be remembered, however, that with the appearance of disease processes or processes related to the aging of the human body, the values of the parameters describing these elements may change. The article presents how the change of elasticity and damping parameters generated by the muscles influences the simulation of maintaining the balance.

关键词： balance modeling simulation

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Research on Virtual Synchronous control of MMC-HVDC Inverter Based on Model Predictive control 6

Research on Virtual Synchronous Control of MMC-HVDC Inverter...

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6th international conference on HVDC, HVDC 2024

作者： Du, Xiangnan Li, Lanfang Zhang, Fan Li, Qinan Wang, Ziying Beijing Dc Td Engineering Technology Research Center Nari China-EPRI Electrical Engineering Co. Ltd. Beijing China

ISBN: (纸本)9798350387759

The receiving-end converter of MMC-HVDC using virtual synchronous control has the problems of slow dynamic response and complex parameter setting. To resolve it, a model predictive control (MPC) based MMC virtual synchronous control method is proposed, which has a faster active dynamic response support during the frequency disturbance of the power system. Finally, the effectiveness and correctness of the proposed control method is validated by simulations. This paper provides a new solution to further improve the transient response performance of MMC under the power system with a high proportion of new energy. © 2024 IEEE.

关键词： MMC-HVDC model predictive control receiving-end converter virtual synchronous control

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Research and Implementation of No-Entry Bar control System Powered by Solar Power System 2

Research and Implementation of No-Entry Bar Control System P...

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2nd IEEE international conference on Civil Aviation Safety and Information Technology (ICCASIT)

作者： Yang Hao Tao Hongqiang Jiang Li Ma Xiaodan Second Res Inst CAAC Res & Dev Ctr Chengdu Peoples R China Shenzhen Airport Grp Co LTD Flight Area Management Dept Shenzhen Peoples R China

ISBN: (数字)9781728199481

ISBN: (纸本)9781728199481

In order to reduce the risk of runway incursion, many airports plan to deploy stop bars or in the process of stop bars deployment. Considering many problems occurring in the deployment of stop bars of existing operating airports or new airports,such as high cost for laying primary cable power supply loops and complex installation and construction of lamps, the stop bars system powered by the solar power system is designed. This paper starts from the research of system composition and architecture, completing the software and hardware design of the system, realizes the power supply and working condition monitoring of lamps, meanwhile, the wireless communication technology is adopted to achieve remote on-off control over lamps. The results of the experimental verification shows that basic function, stability and reliability of the system, which need to meet the use requirements of Advanced-Surface Movement Guidance & control System (A-SMGCS), providing significant technical support for future runway incursion early-warning systems at airports.

关键词： no-entry bar runway incursion solar power 5G communication on-off control construction cost

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The Generalized Algorithms of Global Parametric Optimization and Stochastization for Dynamical Models of Interconnected Populations 1

引用

11th international conference on Optimization and Applications, OPTIMA 2020

作者： Demidova, Anastasia Druzhinina, Olga Jacimovic, Milojica Masina, Olga Mijajlovic, Nevena Olenev, Nicholas Petrov, Alexey Moscow Russia Federal Research Center "Computer Science and Control" of RAS Moscow Russia V.A. Trapeznikov Institute of Control Sciences of RAS Moscow Russia Montenegrin Academy of Sciences and Arts Podgorica Montenegro Bunin Yelets State University Yelets Russia University of Montenegro Podgorica Montenegro

ISBN: (数字)9783030628673

ISBN: (纸本)9783030628666

We consider the issue of synthesis and analysis of multidimensional controlled model with consideration of predator-prey interaction and taking into account migration flows, and propose new formulations of corresponding optimal control problems. In search for optimal trajectories, we develop a generalized algorithm of global parametric optimization, which is based on the development of algorithm for generating control function and on modifications of classical numerical methods for solving differential equations. We present the results of the search for optimal trajectories and control functions generation. Additionally, we propose an algorithm for the transition to stochastic controlled models based on the development of a method for constructing self-consistent stochastic models. The tool software as a part of a software package for modeling controlled dynamical systems has been developed. We have also carried out a computer study of the constructed models. The results can be used in the problems of modeling dynamics processes, taking into account the requirements of control and optimization. © 2020, Springer Nature Switzerland AG.

关键词： Differential equations

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control of a 3D quadruped trot

引用

8th international conference on Climbing and Walking Robots (CLAWAR 2005)

作者： Palmer, L. R., III Orin, D. E. Ohio State Univ Dept Elect & Comp Engn Columbus OH 43210 USA

ISBN: (纸本)3540264132

Legged vehicles offer several advantages over wheeled vehicles-particularly over broken terrain, but are presently too slow to be advantageous for many tasks. Trotting, the precursor to galloping for many quadrupeds, employs high-speed actuation to coordinate the intermittent ground contacts for each leg. Compliant elements and high-power actuators combine to perform a complex interchange of potential and kinetic energy during these short thrust intervals. These complexities, the frictional and contact losses that occur during normal running, plus the high number of degrees of freedom make three-dimensional (3D) dynamic quadruped motion very difficult to model accurately for control. For this reason, most of the research effort has been focused on simplified planar systems, only allowing motion in the sagittal plane. Many of these controllers only perform well around a fixed operating point and cannot regulate heading for desired changes in running direction. A 3D trotting controller which overcomes the above problems is presented here. Simulation results show the system responding appropriately to changes in the desired speed up to 3 m/s and heading up to 20 deg/s.

关键词： 3D control quadruped trot

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Approximate dynamic programming algorithms for multidimensional inventory optimization problems

Approximate dynamic programming algorithms for multidimensio...

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7th IFAC conference on Manufacturing Modelling, Management, and control, MIM 2013

作者： Cimen, Mustafa Kirkbride, Christopher Lancaster University Management School Lancaster LA1 4YX United Kingdom

ISBN: (纸本)9783902823359

An important issue in the supply chain literature concerns the optimization of inventory decisions. Single-product inventory problems are widely studied and have been optimally solved under a variety of assumptions. However, as supply chain systems become more complex, inventory decisions become more complicated for which the methods/approaches for optimizing single-product inventory systems are incapable of deriving optimal policies. Manufacturing process flexibility provides an example of such complex application areas. Interrelated products and production facilities form a highly multidimensional, non-decomposable system for which optimal policies cannot be obtained by classical methods. We propose the methodology of Approximate Dynamic Programming (ADP) to overcome the computational challenge imposed by this multidimensionality. Incorporating a sample backup approach, ADP develops policies by utilizing only a fraction of the computations required by classical Dynamic Programming. However, there are no studies in the literature that optimize production decisions in a stochastic, multifactory, multiproduct inventory system of this complexity. This paper aims to explore the feasibility of ADP algorithms for this application. We present the results from a series of numerical experiments that establish the strong performance of policies developed via temporal difference ADP algorithms in comparison to optimal policies. © IFAC.

关键词： Dynamic programming

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Research on Clamping Force control of Hydraulic Power Chuck of Numerical control Machine Tool 6

Research on Clamping Force Control of Hydraulic Power Chuck ...

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6th IEEE international conference on control Science and systems Engineering, ICCSSE 2020

作者： Feng, Gao Yingying, Luo Ziyue, Pan Ruikai, Yang Xi'an University of Technology Key Lab of Manufacturing Equipment of Shaanxi Province Xi'an710048 China

ISBN: (纸本)9781728198460

In order to solve the engineering application problems of the traditional variable pump pressure system driven by valve control or asynchronous motor associated with the rising temperature, complex structure etc, which could results in oil pollution resulted from leaking, low efficiency, and poor pressure retaining accuracy due to time-varying, nonlinear and hysteresis of the hydraulic power chuck. The unstable clamping force would cause machining error of parts. On the basis of analyzing the mathematical model of motor, power mechanism, execution mechanism and pressure sensor, the transfer function of direct drive pump controlled electric hydraulic pressure servo control system is derived, and a clamping force controller based on adaptive fuzzy PID control principle is proposed. The fuzzy rules and inference methods are used to tune the PID parameters online, and thus the flow rate of system is adjusted in real time to keep the clamping force constant. The effectiveness and feasibility of the proposed control method are verified with simulation and experiment. The results show that the fuzzy PID controller has a better dynamic performance and robustness than traditional PID controller, at the same time, the system has the fast response and no overshoot. This kind of system can completely meet the requirements on accuracy and stability of the clamping force in the machining process, especially for machining thin-walled parts. © 2020 IEEE.

关键词： Fuzzy inference

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