Results in Control and Optimization最新文献_第10页

Optimal control and cost-effectiveness analysis of scam rumor propagation over social networks 社交网络诈骗谣言传播的最优控制和成本效益分析

Results in Control and Optimization Pub Date : 2024-06-11 DOI: 10.1016/j.rico.2024.100441

Salaheddine Belhdid , Omar Balatif , Bouchaib Khajji

引用次数: 0

Multi objectives optimization of wind turbines’ power and fatigue loads using perturbation free extremum seeking control 利用无扰动寻极控制多目标优化风力涡轮机的功率和疲劳载荷

Results in Control and Optimization Pub Date : 2024-06-10 DOI: 10.1016/j.rico.2024.100438

Thaker Nayl , Khalid Tourkey Atta , Martin Guay

{"title":"Multi objectives optimization of wind turbines’ power and fatigue loads using perturbation free extremum seeking control","authors":"Thaker Nayl , Khalid Tourkey Atta , Martin Guay","doi":"10.1016/j.rico.2024.100438","DOIUrl":"https://doi.org/10.1016/j.rico.2024.100438","url":null,"abstract":"<div><p>This manuscript introduces a perturbation-free extremum-seeking control strategy specifically designed to enhance the operational performance of wind turbines under optimal conditions. The strategy employed utilizes a perturbation-free extremum-seeking approach to ensure the wind turbine farm operates at maximum power efficiency while also reducing power output fluctuations. By employing this control system, the wind turbine generators are maintained at their optimal power output level, effectively navigating through disturbances such as tower shadow, wind shear, and the erratic nature of wind speeds without introducing external perturbations.</p><p>The algorithm is adept at managing the blade pitch angles and the turbines’ rotational speed, ensuring a controlled and efficient operation. Furthermore, this paper outlines a perturbation-free method to optimize energy production and decrease fatigue loads, thereby extending the operational lifespan of a wind turbine. The superior operational efficiency of the wind turbine array generators achieved through this approach underscores its effectiveness.</p><p>The robustness and effectiveness of this perturbation-free control system are validated through comprehensive simulation tests on an array comprising four wind turbine generators. The outcomes of these simulations solidly back the extremum-seeking control system’s proficiency in reaching maximum power output without relying on perturbative methods, highlighting its innovative contribution to wind turbine efficiency optimization.</p></div>","PeriodicalId":34733,"journal":{"name":"Results in Control and Optimization","volume":"16 ","pages":"Article 100438"},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666720724000687/pdfft?md5=292a4cab2fb3fc97f4b6a966320ecda0&pid=1-s2.0-S2666720724000687-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141324890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Higher-order σ-cone arcwisely connectedness in optimization problems associated with difference of set-valued maps 与集值映射差相关的优化问题中的高阶σ锥弧连通性

Results in Control and Optimization Pub Date : 2024-06-10 DOI: 10.1016/j.rico.2024.100440

Koushik Das

{"title":"Higher-order σ-cone arcwisely connectedness in optimization problems associated with difference of set-valued maps","authors":"Koushik Das","doi":"10.1016/j.rico.2024.100440","DOIUrl":"https://doi.org/10.1016/j.rico.2024.100440","url":null,"abstract":"<div><p>In this paper, an optimization problem <span>(DP)</span> is studied where the objective maps and the constraints are the difference of set-valued maps (abbreviated as SVMs). The higher-order <span><math><mi>σ</mi></math></span>-cone arcwise connectedness is described as an entirely new type of generalized higher-order arcwise connectedness for set-valued optimization problems. Under the higher-order contingent epiderivative and higher-order <span><math><mi>σ</mi></math></span>-cone arcwise connectedness suppositions, the higher-order sufficient Karush–Kuhn–Tucker (KKT) optimality requirements are demonstrated for the problem <span>(DP)</span>. The higher-order Wolfe <span>(<span><math><mrow><mi>W</mi><mi>D</mi></mrow></math></span>)</span> form of duality is investigated and the corresponding higher-order weak, strong, and converse theorems of duality are established between the primary <span>(DP)</span> and the corresponding dual problem by employing the higher-order <span><math><mi>σ</mi></math></span>-cone arcwise connectedness supposition. In order to demonstrate that higher-order <span><math><mi>σ</mi></math></span>-cone arcwise connectedness is more generalized than higher-order cone arcwise connectedness, an example is also constructed. As a special case, the results coincide with the existing ones available in the literature.</p></div>","PeriodicalId":34733,"journal":{"name":"Results in Control and Optimization","volume":"16 ","pages":"Article 100440"},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666720724000705/pdfft?md5=f7c2e2bf31f2b726a7a9f6194fe2cec0&pid=1-s2.0-S2666720724000705-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141324892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling infectious respiratory diseases considering fear effect and latent period 考虑恐惧效应和潜伏期的呼吸道传染病建模

Results in Control and Optimization Pub Date : 2024-06-08 DOI: 10.1016/j.rico.2024.100439

Shiv Mangal , O.P. Misra , Joydip Dhar

{"title":"Modeling infectious respiratory diseases considering fear effect and latent period","authors":"Shiv Mangal , O.P. Misra , Joydip Dhar","doi":"10.1016/j.rico.2024.100439","DOIUrl":"10.1016/j.rico.2024.100439","url":null,"abstract":"<div><p>This paper introduces a fractional-order (FO) <span><math><mrow><mi>S</mi><mi>E</mi><mi>I</mi><mi>R</mi></mrow></math></span> epidemic model for respiratory diseases considering a non-human class <span><math><mrow><mi>P</mi><mrow><mo>(</mo><mi>t</mi><mo>)</mo></mrow></mrow></math></span> for pathogens to study the effects of fear and awareness programs on disease dynamics. Further, using the basic reproduction number <span><math><msubsup><mrow><mi>ℛ</mi></mrow><mrow><mn>0</mn></mrow><mrow><mi>α</mi></mrow></msubsup></math></span>, the criteria for the extinction or persistence of the disease is established. Also, the conditions for Hopf bifurcation are derived, considering both FO (<span><math><mi>α</mi></math></span>) and rate of pathogens <span><math><mi>η</mi></math></span> as the bifurcation parameters. In addition, a detailed numerical simulation is performed to substantiate our theoretical results. The study of transmission dynamics of Tuberculosis (TB), a particular example of respiratory disease, is carried out in reference to the United States (US). Finally, we have estimated model parameters with the help of actual TB data from the US and then predicted the TB dynamics and disease control. It is pointed out that the fractional order can reduce the complexity of the model and better predict the dynamics of TB in the US than the integer order.</p></div>","PeriodicalId":34733,"journal":{"name":"Results in Control and Optimization","volume":"16 ","pages":"Article 100439"},"PeriodicalIF":0.0,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666720724000699/pdfft?md5=1c504c5bf7fe7998ca9532445e5882e2&pid=1-s2.0-S2666720724000699-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141414173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mathematical modeling of chickenpox transmission using the Laplace Adomian Decomposition Method 利用拉普拉斯-阿多米安分解法建立水痘传播的数学模型

Results in Control and Optimization Pub Date : 2024-06-01 DOI: 10.1016/j.rico.2024.100436

Tawakalt A. Ayoola, Amos O. Popoola, Morufu O. Olayiwola, Adedapo I. Alaje

引用次数: 0

Novel tuning rules for IMC-high-order PID load frequency controller of power systems 电力系统 IMC-高阶 PID 负载频率控制器的新调谐规则

Results in Control and Optimization Pub Date : 2024-06-01 DOI: 10.1016/j.rico.2024.100435

Xingqi Hu , Wen Tan , Guolian Hou

{"title":"Novel tuning rules for IMC-high-order PID load frequency controller of power systems","authors":"Xingqi Hu , Wen Tan , Guolian Hou","doi":"10.1016/j.rico.2024.100435","DOIUrl":"10.1016/j.rico.2024.100435","url":null,"abstract":"<div><p>The problem of load frequency control (LFC) for power grids has received widespread attention in power industrial control. Ensuring the stability of the frequency is the primary concern that constrains the development of the electric power system. This paper presents a novel internal model control (IMC)- proportional-integral-derivative (PID) controller design method for LFC control systems, centered on pole-zero conversion. This method aims to simplify the system model's complexity and improve the system's performance. The IMC controller is approximated as a PID series compensator (high-order PID), with exact tuning formulas provided for various scenarios. These include single-area without or with reheat turbines, hydro turbines with transient droop compensators, wind turbines, and gas turbines. The tuning formulas are characterized by a single parameter, determined under robustness constraints and integrated time absolute error (ITAE). The proposed tuning method considers the generator rate constraint (GRC) and applies to multi-area single-source and multi-area multi-source power systems. The results of the simulation confirm that the controller tuning method presented in this paper has significant advantages over the existing design methods concerning robustness and anti-interference performance.</p></div>","PeriodicalId":34733,"journal":{"name":"Results in Control and Optimization","volume":"15 ","pages":"Article 100435"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666720724000651/pdfft?md5=7c75760aafeabf178621a5db6492a2ca&pid=1-s2.0-S2666720724000651-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141040628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing pressure gradient on the MHD peristaltic blood flow of nanofluids by - response surface methodology 通过响应面方法优化纳米流体 MHD 蠕动血流的压力梯度

Results in Control and Optimization Pub Date : 2024-06-01 DOI: 10.1016/j.rico.2024.100426

Saima Muhammad, Dilawar Hussain, Munawwar Ali Abbas

{"title":"Optimizing pressure gradient on the MHD peristaltic blood flow of nanofluids by - response surface methodology","authors":"Saima Muhammad, Dilawar Hussain, Munawwar Ali Abbas","doi":"10.1016/j.rico.2024.100426","DOIUrl":"10.1016/j.rico.2024.100426","url":null,"abstract":"<div><p>This study focuses on optimization of pressure gradient on MHD peristaltic nanofluid flow by response surface methodology (RSM). The governing equations, including continuity, motion, nanoparticle, and concentration force are solved by disregarding inertial forces and employing the approximation of long-wavelength. The perturbation method is used to solve the resultant nonlinear coupled partial differential equation analytically. Mathematical and graphical outputs for concentration, temperature, and pressure rise, considering all physical parameters, are presented. Numerical computation is applied to assess expressions for friction forces and pressure rise. Magnetohydrodynamics has various applications in various microchannel designs for efficacious flow control in pumping fluids for both pulsating and non-pulsating continuous flow. Finally, Response Surface Methodology (RSM) is used for performing sensitivity analysis and its optimization. ANOVA tables are generated with the help of MINITAB-19 which is a statistical software. The sensitivity results are displayed in tabular and graphical form and concluded that <em>M</em> is more sensitive than other input parameters for <span><math><mrow><mstyle><mi>Δ</mi></mstyle><mi>P</mi><mspace></mspace></mrow></math></span>at the low level and the input parameter <em>Nt</em> is most sensitive among others at middle and high levels. Further, Temperature and pressure of the flow has different responses for various values of magnetic, thermophoresis and Brownian motion parameter.</p></div>","PeriodicalId":34733,"journal":{"name":"Results in Control and Optimization","volume":"15 ","pages":"Article 100426"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666720724000560/pdfft?md5=8e2a4bbc070280123fea4a19b109d04b&pid=1-s2.0-S2666720724000560-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141232336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Taylor wavelet quasilinearization method for solving tumor growth model of fractional order 用于求解分数阶肿瘤生长模型的泰勒小波准线性化方法

Results in Control and Optimization Pub Date : 2024-06-01 DOI: 10.1016/j.rico.2024.100437

Pooja Yadav , Shah Jahan , Mohammad Izadi

引用次数: 0

Pneumatic servo position control optimization using adaptive-domain prescribed performance control with evolutionary mating algorithm 利用进化匹配算法的自适应域规定性能控制优化气动伺服位置控制

Results in Control and Optimization Pub Date : 2024-05-17 DOI: 10.1016/j.rico.2024.100434

Addie Irawan, Mohd Herwan Sulaiman, Mohd Syakirin Ramli, Mohd Iskandar Putra Azahar

{"title":"Pneumatic servo position control optimization using adaptive-domain prescribed performance control with evolutionary mating algorithm","authors":"Addie Irawan, Mohd Herwan Sulaiman, Mohd Syakirin Ramli, Mohd Iskandar Putra Azahar","doi":"10.1016/j.rico.2024.100434","DOIUrl":"10.1016/j.rico.2024.100434","url":null,"abstract":"<div><p>Pneumatic servo systems face challenges such as friction, compressibility, and nonlinear dynamics, necessitating advanced control techniques. Research suggests model-based, model-free, hybrid, and optimization-based methods have their strengths. Therefore, this study presents an optimal control strategy using Adaptive Domain Prescribed Performance Control (AD-PPC) cascaded with PID and optimized using the Evolutionary Mating Algorithm (EMA) for a pneumatic servo system (PSS). The goal is to achieve faster transient control and stable rod-piston positioning with minimal friction through the hysteresis phenomenon of the targeted proportional valve-controlled double-acting pneumatic cylinder (PPVDC) representing the PSS. The novel EMA optimizes the cascaded controller based on the tracking error as its objective function. Simulation studies verify the proposed AD-PPC-PID controller with the PPVDC model plant, iteratively optimized by the EMA. The analytical study compares this setup's control system and optimization model with the same control system model using alternative optimization methods. The testing employs step and multi-step signals for PPVDC's rod-piston position input. Results show that the EMA-tuned AD-PPC-PID outperforms AD-PPC-PID controller with other optimizers. For both input trajectory tests, EMA-tuned AD-PPC-PID shows faster response times, with average improvements of 30 % in settling times and 70 % in tracking performance metrics compared to other optimizers, making it robust for nonlinear system applications like PPVDC rod-piston positioning.</p></div>","PeriodicalId":34733,"journal":{"name":"Results in Control and Optimization","volume":"15 ","pages":"Article 100434"},"PeriodicalIF":0.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266672072400064X/pdfft?md5=d7c28dea3cb31ff1676d7fb9c083fa11&pid=1-s2.0-S266672072400064X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141028169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A constraint qualification for the dislocation hyperbolic augmented Lagrangian algorithm 错位双曲增强拉格朗日算法的约束条件

Results in Control and Optimization Pub Date : 2024-05-13 DOI: 10.1016/j.rico.2024.100429

Lennin Mallma Ramirez , Nelson Maculan , Adilson Elias Xavier , Vinicius Layter Xavier

引用次数: 0