Journal of Computational and Nonlinear Dynamics最新文献_第6页

Evaluation and Modification of Kinetic Gas Collision Theory as Applied to Encounter Rate Dynamics for Multi-Robot Groups and Robot Swarms 气体碰撞动力学理论在多机器人群与机器人群相遇率动力学中的应用评价与修正

4区工程技术

Journal of Computational and Nonlinear Dynamics Pub Date : 2023-05-04 DOI: 10.1115/1.4062202

Adam Schroeder, Glenn Lipscomb

{"title":"Evaluation and Modification of Kinetic Gas Collision Theory as Applied to Encounter Rate Dynamics for Multi-Robot Groups and Robot Swarms","authors":"Adam Schroeder, Glenn Lipscomb","doi":"10.1115/1.4062202","DOIUrl":"https://doi.org/10.1115/1.4062202","url":null,"abstract":"Abstract Robots encountering other robots in a group can be beneficial, e.g., to exchange information, or detrimental, e.g., obstructing one another from operating. Kinetic gas theory (KGT) provides a statistical mechanical analysis of the collision rate between molecules. KGT has been applied to model robot encounter rates but there has been some inconsistency in how it has been applied to robot groups. There is a nine order of magnitude difference in size between a typical robot and molecule, so it is not a surprise that some adjustments may need to be made when considering robots instead of molecules. This work develops a model in detail by applying KGT, articulates limitations of applying this theory to robots, highlights inconsistencies in how it has been previously applied to robots, and suggests modifications to the model. A simple numerical study is also shown to validate the model and highlight the effect of differences in the implementation. The most important gap that this research has identified is the need to collect data on the magnitude and direction distribution of robots' velocities. Robots move and behave differently than gas molecules, whose velocity magnitude follow a Boltzmann distribution. A second major result is the connection of the KGT-based model developed in this work and previous research on robot encounter rate which independently arrived at the same relationship between robot size, number of robots, and encounter rate.","PeriodicalId":54858,"journal":{"name":"Journal of Computational and Nonlinear Dynamics","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136265863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual Function Matrix Projective Synchronization for Fractional-order Hyperchaotic Systems 分数阶超混沌系统的对偶函数矩阵投影同步

IF 2 4区工程技术

Journal of Computational and Nonlinear Dynamics Pub Date : 2023-05-03 DOI: 10.1115/1.4062452

Jinman He, L. Pei

{"title":"Dual Function Matrix Projective Synchronization for Fractional-order Hyperchaotic Systems","authors":"Jinman He, L. Pei","doi":"10.1115/1.4062452","DOIUrl":"https://doi.org/10.1115/1.4062452","url":null,"abstract":"\u0000 It is well known that the variability and complexity of projection proportionality factors of Dual Projective Synchronization (DPS) can effectively enhance signal confidentiality. However, in most literatures, the proportionality factors are some simple fixed constants, which can't ensure high security of information. For two pairs of fractional-order hyperchaotic systems (FOHS), how to expand the projection proportionality factors to increase its complexity? Then, our work will propose a new synchronization type, i.e., Dual Function Matrix Projective Synchronization (DFMPS) and realize the DFMPS for FOHS for the first time. Firstly, based on the traditional DPS, we generalize the proportionality factors to a general function matrix depending on time t, present the error functions and define the DFMPS. Then, for FOHS, the active controller and synchronization condition are designed and proved. At the same time, when the system is affected by parameter disturbance, the proposed active controller can eliminate the influence of parameter disturbance to the system's DFMPS, which indicates that the proposed control strategy has strong robustness. Finally, the DFMPS of two pairs of fractional-order hyperchaotic Chen and Rabinovich systems are realized, and synchronizing analysis and system robustness analysis are verified by numerical simulation. Particularly, the DFMPS can be degenerated to dual anti-synchronization, dual complete synchronization, DPS, modified DPS and dual matrix projective synchronization. This work extends the synchronization types for FOHS and offers a useful method to explore DFMPS for other fractional-order systems.","PeriodicalId":54858,"journal":{"name":"Journal of Computational and Nonlinear Dynamics","volume":"40 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75421333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Python Implementation of a Robust Multi-harmonic Balance with Numerical Continuation and Automatic Differentiation for Structural Dynamics 结构动力学具有数值延拓和自动微分的鲁棒多谐平衡的Python实现

IF 2 4区工程技术

Journal of Computational and Nonlinear Dynamics Pub Date : 2023-04-27 DOI: 10.1115/1.4062424

Tiago Martins, Francesco Trainotti, Andreas Zwölfer, F. Afonso

引用次数: 0

Fractional Dynamics and Analysis of Coupled Schrödinger-kdv Equation with Caputo-katugampola Type Memory Caputo-katugampola型记忆的分数阶动力学及耦合Schrödinger-kdv方程分析

IF 2 4区工程技术

Journal of Computational and Nonlinear Dynamics Pub Date : 2023-04-21 DOI: 10.1115/1.4062391

Jagdev Singh, A. Gupta, D. Baleanu

引用次数: 1

Strong Resonance Bifurcations in a Discrete-time In-host Model with a Saturating Infection Rate 具有饱和感染率的离散时间宿主模型的强共振分岔

IF 2 4区工程技术

Journal of Computational and Nonlinear Dynamics Pub Date : 2023-04-21 DOI: 10.1115/1.4062390

Sanaa Moussa Salman

引用次数: 0

Efficient Hybrid Symbolic-Numeric Computational Method for Piecewise Linear Systems With Coulomb Friction 具有库仑摩擦的分段线性系统的高效符号-数值混合计算方法

4区工程技术

Journal of Computational and Nonlinear Dynamics Pub Date : 2023-04-19 DOI: 10.1115/1.4062203

Amir Shahhosseini, Meng-Hsuan Tien, Kiran D'Souza

{"title":"Efficient Hybrid Symbolic-Numeric Computational Method for Piecewise Linear Systems With Coulomb Friction","authors":"Amir Shahhosseini, Meng-Hsuan Tien, Kiran D'Souza","doi":"10.1115/1.4062203","DOIUrl":"https://doi.org/10.1115/1.4062203","url":null,"abstract":"Abstract A wide range of mechanical systems have gaps, cracks, intermittent contact or other geometrical discontinuities while simultaneously experiencing Coulomb friction. A piecewise linear model with discontinuous force elements is discussed in this paper that has the capability to accurately emulate the behavior of such mechanical assemblies. The mathematical formulation of the model is standardized via a universal differential inclusion and its behavior, in different scenarios, is studied. In addition to the compatibility of the proposed model with numerous industrial systems, the model also bears significant scientific value since it can demonstrate a wide spectrum of motions, ranging from periodic to chaotic. Furthermore, it is demonstrated that this class of models can generate a rare type of motion, called weakly chaotic motion. After their detailed introduction and analysis, an efficient hybrid symbolic-numeric computational method is introduced that can accurately obtain the arbitrary response of this class of nonlinear models. The proposed method is capable of treating high dimensional systems and its proposition omits the need for utilizing model reduction techniques for a wide range of problems. In contrast to the existing literature focused on improving the computational performance when analyzing these systems when there is a periodic response, this method is able to capture transient and nonstationary dynamics and is not restricted to only steady-state periodic responses.","PeriodicalId":54858,"journal":{"name":"Journal of Computational and Nonlinear Dynamics","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135708614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of a Sliding Mode-Adaptive PID Control for Aerial Systems with a Suspended Load Exposed to Wind Gusts 风环境下悬载航空系统滑模自适应PID控制设计

IF 2 4区工程技术

Journal of Computational and Nonlinear Dynamics Pub Date : 2023-04-13 DOI: 10.1115/1.4062324

Vincenzo Di Paola, A. Goldsztejn, M. Zoppi, S. Caro

引用次数: 1

Identification of Asymmetric Bouc-Wen Hysteresis Under Intense Noise by Only Measuring Acceleration 仅通过测量加速度识别强噪声条件下的非对称包温滞回

IF 2 4区工程技术

Journal of Computational and Nonlinear Dynamics Pub Date : 2023-04-12 DOI: 10.1115/1.4062301

{"title":"Identification of Asymmetric Bouc-Wen Hysteresis Under Intense Noise by Only Measuring Acceleration","authors":"","doi":"10.1115/1.4062301","DOIUrl":"https://doi.org/10.1115/1.4062301","url":null,"abstract":"\u0000 Parameter identification of hysteretic models is significant for predicting structural dynamic response in vibration isolation structures. However, quasi-static testing and displacement measurement methods are not convenient for assembly structures and sensor layouts. Moreover, the methods based on evolutionary optimization need to provide appropriate boundary conditions for convergence and efficiency. Therefore, a novel hybrid identification method that takes the advantage of physics-informed parameter constraints and only acceleration measurement is proposed to identify the asymmetric Bouc-Wen hysteresis model. The restoring force surface is constructed for hysteresis force extraction based on the measurement of base excitation and isolated mass acceleration. The polynomial fitting and limit cycle approach are utilized for physical information given of an improved Bouc-wen model. Furthermore, the evolutionary algorithm based on parameter constraints is implemented for final parameter estimation. A numerical simulation of an asymmetric Bouc-wen model shows that the proposed method can keep an NMSE of 0.19% under the noise level of 30 dB. The reconstructed hysteresis loop keeps in good agreement with the theoretical one.","PeriodicalId":54858,"journal":{"name":"Journal of Computational and Nonlinear Dynamics","volume":"136 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90636417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Formula of Solutions for Non-autonomous Linear Difference Equations with a Fractional Forward Operator 具有分数阶前算子的非自治线性差分方程的一个解公式

IF 2 4区工程技术

Journal of Computational and Nonlinear Dynamics Pub Date : 2023-04-12 DOI: 10.1115/1.4062300

引用次数: 1

Discrete-time Adaptive Fractional Nonlinear Control Using Fuzzy Rules Emulating Networks 基于模糊规则仿真网络的离散时间自适应分数阶非线性控制

IF 2 4区工程技术

Journal of Computational and Nonlinear Dynamics Pub Date : 2023-04-06 DOI: 10.1115/1.4062264

Aldo Jonathan Muñoz Vázquez, C. Treesatayapun

引用次数: 0