The European Physical Journal Special Topics最新文献_第7页

Design of sampled-data controller for T–S fuzzy system with the refined fractional delayed-state and its applications 具有精炼分数延迟状态的 T-S 模糊系统的采样数据控制器设计及其应用

The European Physical Journal Special Topics Pub Date : 2024-08-05 DOI: 10.1140/epjs/s11734-024-01268-2

Ramasamy Subramaniyam, Manivannan Annamalai, Young Hoon Joo

{"title":"Design of sampled-data controller for T–S fuzzy system with the refined fractional delayed-state and its applications","authors":"Ramasamy Subramaniyam, Manivannan Annamalai, Young Hoon Joo","doi":"10.1140/epjs/s11734-024-01268-2","DOIUrl":"https://doi.org/10.1140/epjs/s11734-024-01268-2","url":null,"abstract":"The paper is concerned with the development of a sampled-data (SD) controller designed for Takagi–Sugeno (T–S) fuzzy systems. A key highlight is the incorporation of a refined fractional delayed-state into this control approach. The primary aim is to establish criteria for system stabilization, thereby ensuring the asymptotic stability of the considered systems. This objective is pursued within the framework of the newly designed control methodology. The core contribution of work explains in the introduction of an innovative Lyapunov–Krasovskii functional (LKF) tailored to T–S fuzzy systems. This novel approach capitalizes on the efficacy of sampling intervals. The LKF design takes advantage of variable attributes tied to the real sampling pattern, effectively reducing the conservatism of the outcomes. Moreover, the paper introduces a sophisticated fractional delayed-state concept, which plays a pivotal role in shaping a modified looped functional-based LKF. The stability criteria are then formulated through the utilization of linear matrix inequalities (LMIs) and integral inequalities. These criteria perform dynamic part in establishing the asymptotic stability of considered systems when subjected to the designed control approach.","PeriodicalId":501403,"journal":{"name":"The European Physical Journal Special Topics","volume":"197 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141940049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The identification for time-varying parameter and noise of tuberculosis with seasonal changes based on data-behavior-driven system 基于数据行为驱动系统的结核病季节性时变参数和噪声识别

The European Physical Journal Special Topics Pub Date : 2024-08-05 DOI: 10.1140/epjs/s11734-024-01274-4

Kexin Wei, Shaojuan Ma

{"title":"The identification for time-varying parameter and noise of tuberculosis with seasonal changes based on data-behavior-driven system","authors":"Kexin Wei, Shaojuan Ma","doi":"10.1140/epjs/s11734-024-01274-4","DOIUrl":"https://doi.org/10.1140/epjs/s11734-024-01274-4","url":null,"abstract":"Time-varying and seasonal parameter inversion in the mathematical model of infectious diseases and uncertainty quantization based on actual data have great significance for real quantitative transmission process. In this study, the behavior-driven mathematical model of infectious diseases and the data-driven parameter identification method are combined to quantify the transmission law of tuberculosis (TB). To begin with, according to the characteristics of TB transmission, the TS-SID model with time-varying is established. Then, the improved identification algorithm is proposed to track the fluctuation of disease infection rate and mortality rate considering the seasonal influence. Meanwhile, focusing on the influence of noise on the spread of diseases, noise reduction and uncertain quantization are carried out on the data to identify the noise distribution. In addition, predict the denoised sequence and superimpose the noise distribution, which can improve the rationality of prediction. Finally, the numerical comparison shows that seasonal time-varying tracking is good for grasping and predicting the disease evolution.","PeriodicalId":501403,"journal":{"name":"The European Physical Journal Special Topics","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141940058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An arm musculoskeletal control scheme incorporating cerebellar and emotional learning models 结合小脑和情感学习模型的手臂肌肉骨骼控制方案

The European Physical Journal Special Topics Pub Date : 2024-08-02 DOI: 10.1140/epjs/s11734-024-01269-1

Fengjie Wang, Fang Han, Ying Yu, Qinghua Zhu

{"title":"An arm musculoskeletal control scheme incorporating cerebellar and emotional learning models","authors":"Fengjie Wang, Fang Han, Ying Yu, Qinghua Zhu","doi":"10.1140/epjs/s11734-024-01269-1","DOIUrl":"https://doi.org/10.1140/epjs/s11734-024-01269-1","url":null,"abstract":"The cerebrum and cerebellum play a crucial role in motion control and are crucial to perform a variety of fast, precise movements for humans and animals. Emotions are generated in the cerebral cortex, and activate the amygdala, which promotes the storage of information in various regions of the cerebrum. In this paper, cerebellar learning model, emotional learning model, and spinal cord calculation module are incorporated to complete the control of an arm musculoskeletal system, and the redundancy problem of the musculoskeletal system control is solved through the optimized calculation in the spinal cord module. The arm musculoskeletal system can thus complete the end trajectory execution task successfully. It is shown that compared with the cerebellar motion control scheme, the proposed scheme has the advantages of fast learning convergence, simplified synaptic adaptation of cerebellum and strong anti-disturbance ability. It is also verified that the proposed control scheme exhibits good robustness to random noise. The proposed arm musculoskeletal control scheme operates effectively and provides a theoretical reference for the application of biomimetic musculoskeletal system.","PeriodicalId":501403,"journal":{"name":"The European Physical Journal Special Topics","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141882647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A data-driven method to identify the probability density expression of nonlinear system under Gaussian white noise and harmonic excitations 数据驱动法识别高斯白噪声和谐波激励下非线性系统的概率密度表达式

The European Physical Journal Special Topics Pub Date : 2024-08-01 DOI: 10.1140/epjs/s11734-024-01265-5

Chao Wang, Xiaoling Jin, Zhilong Huang

{"title":"A data-driven method to identify the probability density expression of nonlinear system under Gaussian white noise and harmonic excitations","authors":"Chao Wang, Xiaoling Jin, Zhilong Huang","doi":"10.1140/epjs/s11734-024-01265-5","DOIUrl":"https://doi.org/10.1140/epjs/s11734-024-01265-5","url":null,"abstract":"In view of the lack of an explicit expression for the stationary response probability density of generalized nonlinear systems subjected to combined harmonic and Gaussian white noise excitations, a data-driven method is proposed in this paper. The approach involves constructing an expansion expression with undetermined coefficients and determining these coefficients through solving an optimal problem. Initially, leveraging the principle of maximum entropy and the Buckingham Pi theorem, the stationary probability density of the system energy is represented in exponential form. The power of the exponential function is then expanded into a combination of basis functions of Pi groups with undetermined coefficients, constructed from system and excitation parameters, along with the system energy. Subsequently, the coefficients are determined by solving an optimal problem aimed at minimizing the residual between the expression and histogram-based estimations of the probability density of the system energy from random state data. Additionally, a sparse optimization algorithm is employed and then the explicit expression for the probability density of the system energy can be identified including system and excitation parameters. Two typical nonlinear systems, namely the Duffing oscillator and Coulomb friction system, are given to illustrate the effectiveness and accuracy of the proposed data-driven method. The identified expressions cover both resonant and non-resonant cases, showcasing the versatility and applicability of the proposed approach. Furthermore, the extensionality of the expression is thoroughly examined and discussed.","PeriodicalId":501403,"journal":{"name":"The European Physical Journal Special Topics","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A fractional order model for dynamics of HIV infection through various modes of transmission 通过各种传播方式的艾滋病毒感染动态分数阶模型

The European Physical Journal Special Topics Pub Date : 2024-08-01 DOI: 10.1140/epjs/s11734-024-01258-4

Jyotiska Phukan, Hemen Dutta

引用次数: 0

System identification based on sparse approximation of Koopman operator 基于库普曼算子稀疏近似的系统识别

The European Physical Journal Special Topics Pub Date : 2024-07-31 DOI: 10.1140/epjs/s11734-024-01264-6

Tiantian Lu, Jinqian Feng, Jin Su, Youpan Han, Qin Guo

引用次数: 0

Interplay of traditional methods and machine learning algorithms for tagging boosted objects 传统方法与机器学习算法在标记增强对象方面的相互作用

The European Physical Journal Special Topics Pub Date : 2024-07-31 DOI: 10.1140/epjs/s11734-024-01256-6

Camellia Bose, Amit Chakraborty, Shreecheta Chowdhury, Saunak Dutta

引用次数: 0

A parametric analysis of electroosmotic and magnetohydrodynamic flows with homogeneous-heterogeneous reactions between squeezing plates 对挤压板之间具有同质异相反应的电渗流和磁流体动力学流的参数分析

The European Physical Journal Special Topics Pub Date : 2024-07-31 DOI: 10.1140/epjs/s11734-024-01271-7

Wajid Ullah Jan, Muhammad Farooq, Rehan Ali Shah, Aamir Khan, Rashid Jan, Imtiaz Ahmad, Sahar Ahmed Idris

引用次数: 0

Analysis of a fractional endemic SEIR model with vaccination and time delay 带有疫苗接种和时间延迟的分数流行病 SEIR 模型分析

The European Physical Journal Special Topics Pub Date : 2024-07-30 DOI: 10.1140/epjs/s11734-024-01267-3

Sara Soulaimani, Abdelilah Kaddar, Fathalla A. Rihan

引用次数: 0

Analysis of MHD micropolar fluid flow over a vertical plate with regular and irregular boundaries 具有规则和不规则边界的垂直板上的 MHD 微多极流体流动分析

The European Physical Journal Special Topics Pub Date : 2024-07-29 DOI: 10.1140/epjs/s11734-024-01251-x

G. Iyyappan, N. Govindaraj, Abhishek Kumar Singh, C. Nirmala, Pankaj Shukla, Dhananjay Yadav

{"title":"Analysis of MHD micropolar fluid flow over a vertical plate with regular and irregular boundaries","authors":"G. Iyyappan, N. Govindaraj, Abhishek Kumar Singh, C. Nirmala, Pankaj Shukla, Dhananjay Yadav","doi":"10.1140/epjs/s11734-024-01251-x","DOIUrl":"https://doi.org/10.1140/epjs/s11734-024-01251-x","url":null,"abstract":"The flow of micropolar nanofluids affected by the phenomena of MHD and thermal radiation through a regular and irregular vertical plate is examined in the present study. The primary goal of the research is to investigate the influence of boundary irregularities on the flow and heat transfer phenomena while considering the phenomena of Brownian motion, MHD, thermal radiation, and thermophoresis. The similarity transformation is applied to the flow’s governing momentum and energy nonlinear coupled partial differential equations, converting them into linear coupled ordinary differential equations. The coupled ODEs are numerically solved using a quasilinearization technique and finite difference schemes. The physical effects of Brownian motion, MHD, heat radiation, and thermophoresis are explored through data and illustrations. The importance of MHD in controlling flow and boundary layer thickness is demonstrated in particular by showing the impact of crucial physical parameters such as the buoyancy force and the Brownian motion parameter. Also, more significant effects on velocity, temperature profiles, and heat transfer rate are observed in irregular boundaries than in regular boundaries.","PeriodicalId":501403,"journal":{"name":"The European Physical Journal Special Topics","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0