The authors study the issues of using visual tools for the system design of complex cyber-physical system components. Based on the analysis of available design tools, effective methods of modeling the components of th...
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The paper describes a mechanism for modeling an optical flow as a random vector field – closed areas on the image plane with certain brightness and dynamics of changes in the vector field. The optical flow is formed ...
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This paper focuses on applying two evolutionary algorithms, Ant Lion Optimization (ALO) and Gradient-based Optimization (GBO), to enhance load frequency control (LFC) in a power system. LFC is crucial for stable power...
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ISBN:
(数字)9798350379297
ISBN:
(纸本)9798350379303
This paper focuses on applying two evolutionary algorithms, Ant Lion Optimization (ALO) and Gradient-based Optimization (GBO), to enhance load frequency control (LFC) in a power system. LFC is crucial for stable power operation, but traditional methods struggle with system complexity and uncertainties. ALO mimics lion hunting behavior, while GBO uses gradients for optimization. Both are known for tackling complexproblems. The study implements these algorithms in a single-area power system model, tuning controller parameters to minimize frequency deviations and improving the performance. This paper includes mathematical modeling, algorithm implementation, and result analysis to show how hybrid of both ALO and GBO algorithm improve stability and performance as compared to traditional methods.
The use of neural network controllers in automatic controlsystems of complex nonlinear dynamic objects is an actual direction of development of modern control theory. The authors propose an approach based on the simu...
The use of neural network controllers in automatic controlsystems of complex nonlinear dynamic objects is an actual direction of development of modern control theory. The authors propose an approach based on the simultaneous synthesis of a neural network Lyapunov function with a controller that guarantees the stability of a closed-loop system. Unlike previous studies devoted to the synthesis of autonomous controlsystems, this paper presents a method for synthesizing tracking systems. An algorithm is also proposed to optimize the transient time. An example of controller synthesis for an unstable control object is considered
The proceedings contain 32 papers. The special focus in this conference is on Advanced problems in Mechanics. The topics include: Equal-strength Design of Axially Symmetric Thin-Walled Shell Moving in Deformed Me...
ISBN:
(纸本)9783031372452
The proceedings contain 32 papers. The special focus in this conference is on Advanced problems in Mechanics. The topics include: Equal-strength Design of Axially Symmetric Thin-Walled Shell Moving in Deformed Media;numerical Aspects of the J-Integral Estimation for Thermomechanical Loading;wear Resistance of Fe66Cr10Nb5B19 Coatings Obtained by Detonation Spraying at Different Explosive Charges;on the Lifetime of Spherical Vessels Subjected to Mechanochemical Corrosion and Temperature Difference;exact and Approximate Solutions of the Modified System of Interrelated Kinetic Equations for Damage Parameter and Creep Deformation;using of Modified Maxwell Equation to Describe Experimental Creep Curves of Carbon Fiber Reinforced Plastic Composites After Aging;residual Stresses in a Thermo-viscoelastic Additively Manufactured Cylinder Subjected to Induction Heating;influence of Aero-thermoacoustic Treatment on the Characteristics of Casting Aluminum Alloys;insectomorphic Robot Rescue from an Emergency on the Back Under the Interference of Influence;effect of Thermal Wall Boundary Conditions on a Viscous Fluid Flow Through an Abrupt Contraction;stability, Instability Study and control of Autonomous Dynamical systems Based on Divergence Method;energy-Optimal control by Boundary Forces for Longitudinal Vibrations of an Elastic Rod;self-synchronization of Inertial Vibration Exciters in a System with an Elastic Limiter;modelling the Dynamics of a Large-Scale Industrial Manipulator for Precision control;the Effect of Hydrogen Embrittlement on the Torsional Oscillations of the Pipe as a Multilayer Shell;Wireless ECG Monitoring Device with the Ability to Collect and Analyze the Received Data;Algorithmic Modelling of the Heart Based on CT Scans;numerical Simulation of the Stress Nature of the Stresses Arising in the Bone, When Installing Different Structures for Temporary Epiphysiodesis;modeling of Functional Behavior of Cu-Al-Be Shape Memory Alloys.
The simulation and analysis of complex spatiotemporal systems are crucial for expressing and solving chaotic dynamical systems such as those in Earth and environmental sciences. Understanding and computing physical pr...
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ISBN:
(数字)9781665410205
ISBN:
(纸本)9781665410212
The simulation and analysis of complex spatiotemporal systems are crucial for expressing and solving chaotic dynamical systems such as those in Earth and environmental sciences. Understanding and computing physical processes, re-actions, or substance transport typically relies on control equations. This paper aims to explore a novel research paradigm by enhancing the physical network coupling structure to construct predictive models for fluid dynamics systems, simulating spatiotemporal dynamical processes of substance transformation in the domain of environmental physics. In particular, when addressing problems involving the non-homogeneous 2D fluid dynamics equations, the characteristic parameters of the phys-ical processes were redefined. This was achieved by encoding hard boundary conditions and designing appropriate neural network architectures to mitigate over-fitting issues during the prediction of parameterized dynamical systems. Comparative experiments involving five benchmark physics-informed neural network methods emphasize the significant improvement in capturing time-varying features and prediction accuracy brought by the proposed approach. Through various water cycle scenarios, the model's estimation ability for diffusion fields is validated, focusing on analyzing the influence of data errors and sample size on the computational results of this deep neural network. Notably, the proposed method exhibits higher robustness to outlier observations under extreme conditions.
The asymmetric windings of motor could lead to the rotor position and speed estimation errors in sensorless drive system, resulting in torque ripples and power loss. A dual three-phase motor has two sets of separately...
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ISBN:
(纸本)9781665493024
The asymmetric windings of motor could lead to the rotor position and speed estimation errors in sensorless drive system, resulting in torque ripples and power loss. A dual three-phase motor has two sets of separately three-phase windings, whose winding asymmetry effects are unified by combining sensorless control method with the vector space decomposition (VSD). Based on this principle, a high-frequency (HF) square-wave voltage injection (HFSVI) based sensorless control method is realized in alpha beta-subspace. Then, the single phase asymmetric winding is verified to cause varying amplitudes and extra negative sequence components in responded HF currents in alpha beta-subspace. The severity of these two problems are discussed respectively, and they are solved by a new rotor position estimation method based on dual complex coefficient adaptive filter (DCCAF). The validity of proposed method is verified by experimental results on a prototyped dual three-phase interior permanent magnet machine (DT-IPM).
We consider the problem of co-designing embodied intelligence as a whole in a structured way, from hardware components such as propulsion systems and sensors to software modules such as control and perception pipeline...
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ISBN:
(纸本)9781665417143
We consider the problem of co-designing embodied intelligence as a whole in a structured way, from hardware components such as propulsion systems and sensors to software modules such as control and perception pipelines. We propose a principled approach to formulate and solve complex embodied intelligence co-design problems, leveraging a monotone co-design theory. The methods we propose are intuitive and integrate heterogeneous engineering disciplines, allowing analytical and simulation-based modeling techniques and enabling interdisciplinarity. We illustrate through a case study how, given a set of desired behaviors, our framework is able to compute Pareto efficient solutions for the entire hardware and software stack of a self-driving vehicle.
This study highlights the critical importance of reconfiguring photovoltaic (PV) arrays to optimize energy production despite various forms of shading. The research shows that reconfiguration, whether static or dynami...
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Path planning algorithms are current research hotspots. Heuristic algorithms that can solve dynamic environment problems are gradually becoming the mainstream research direction. The D∗ algorithm, as one of the new he...
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