Automatika最新文献_第9页

Trust-based clustering and best route selection strategy for energy efficient wireless sensor networks 基于信任的无线传感器网络聚类与最佳路由选择策略

IF 1.9 4区计算机科学

Automatika Pub Date : 2023-05-04 DOI: 10.1080/00051144.2023.2208462

G. Sudha, C. Tharini

引用次数: 2

Evolutionary algorithm-based model predictive control for a reactive distillation column in biodiesel production 基于进化算法的生物柴油反应精馏塔模型预测控制

IF 1.9 4区计算机科学

Automatika Pub Date : 2023-05-04 DOI: 10.1080/00051144.2023.2203566

M. M, N. S., V. S., M. N

{"title":"Evolutionary algorithm-based model predictive control for a reactive distillation column in biodiesel production","authors":"M. M, N. S., V. S., M. N","doi":"10.1080/00051144.2023.2203566","DOIUrl":"https://doi.org/10.1080/00051144.2023.2203566","url":null,"abstract":"Biodiesel is touted to be an alternative to the fossil fuels as it is conducive to the environment. This investigation proposes a control framework to produce biodiesel in a reactive distillation column via a transesterification process. To extract quality product, the temperature profile must be maintained along the column as per the requirements. However, constant interactions among the products inside the column disturb the temperature profile and consequently the product quality. Therefore, this investigation treats the process as a single input and single output system, where in the process interactions are modelled as disturbances. A model predictive controller (MPC) is designed for the proposed system to ensure product quality. The MPC parameters must be selected appropriately to ensure optimal performance. In this regard, to tune the MPC parameters optimally, we use two evolutionary algorithms namely, the real coded genetic algorithm (RGA) and the bio-geography based optimization algorithm (BBO). The results indicate the proposed control strategy provides offset free set point tracking when compared to the multivariable control strategy employed using the MPC algorithm. Among the two evolutionary controllers used for tuning the MPC parameters, the RGA MPC controller provides a satisfactory performance.","PeriodicalId":55412,"journal":{"name":"Automatika","volume":"64 1","pages":"613 - 621"},"PeriodicalIF":1.9,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49576178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ensemble-based cryptography for soldiers’ health monitoring using mobile ad hoc networks 基于集合的移动adhoc网络士兵健康监测密码学

IF 1.9 4区计算机科学

Automatika Pub Date : 2023-05-04 DOI: 10.1080/00051144.2023.2203564

B. V. V. Siva Prasad, S. Mandapati, Lakshmana Kumar Ramasamy, R. Boddu, P. Reddy, B. Suresh Kumar

{"title":"Ensemble-based cryptography for soldiers’ health monitoring using mobile ad hoc networks","authors":"B. V. V. Siva Prasad, S. Mandapati, Lakshmana Kumar Ramasamy, R. Boddu, P. Reddy, B. Suresh Kumar","doi":"10.1080/00051144.2023.2203564","DOIUrl":"https://doi.org/10.1080/00051144.2023.2203564","url":null,"abstract":"Information technology acts an important role in gathering, transmitting with executing data from areas of disaster-prone such as the battlefield and international borders. In addition to the country’s security, the soldier needs protection by defending himself with advanced weapons such as a bomb detector. This paper provides the capability to track the whereabouts and health of soldiers who have been lost or injured on the battlefield. It assists in reducing the time, searching and rescuing operation efforts of the military control room. This paper implements a system for health-condition monitoring that sends soldiers’ health parameters, such as the electrocardiogram (ECG), blood oxygen level, pulse rate, and temperature, to the control room via a Mobile Ad hoc Network (MANET). Body parameters are sensed utilizing various body sensors fixed to the bodies of soldiers. The body parameters are broadcasted to the control room via MANET devices at the path. To preserve the health parameters data of soldiers from enemies while data transmission, this paper also proposes a cryptographic ensemble approach. This approach combines Symmetric Key Encryption, and Identity Based Encryption (IBE) with Identity Based Signature (IBS). The experimental result shows proposed cryptographic ensemble provides high security compared with existing MANET security algorithms.","PeriodicalId":55412,"journal":{"name":"Automatika","volume":"64 1","pages":"658 - 671"},"PeriodicalIF":1.9,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47546400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identification of coronary artery stenosis based on hybrid segmentation and feature fusion 基于混合分割和特征融合的冠状动脉狭窄识别

IF 1.9 4区计算机科学

Automatika Pub Date : 2023-05-02 DOI: 10.1080/00051144.2023.2205727

K. Kavipriya, Manjunatha Hiremath

{"title":"Identification of coronary artery stenosis based on hybrid segmentation and feature fusion","authors":"K. Kavipriya, Manjunatha Hiremath","doi":"10.1080/00051144.2023.2205727","DOIUrl":"https://doi.org/10.1080/00051144.2023.2205727","url":null,"abstract":"Coronary artery disease has been the utmost mutual heart disease in the past decades. Various research is going on to prevent this disease. Obstructive CAD occurs when one or more of the coronary arteries which supply blood to myocardium are narrowed owing to plaque build-up on the arteries’ inner walls, causing stenosis. The fundamental task required for the interpretation of coronary angiography is identification and quantification of severity of stenosis within the coronary circulation. Medical experts use X-ray coronary angiography to identify blood vessel/artery stenosis. Due to the artefact, the image has less clarity and it will be challenging for the medical expert to find the stenosis in the coronary artery. The solution to the problem a computational framework is proposed to segment the artery and spot the location of stenosis in the artery. Here the author presented an automatic method to detect stenosis from the X-ray angiogram image. A unified Computational method of Jerman, Level-set, fine-tuning the artery structure, is developed to extract the segmented artery features and detect the artery’s stenosis. The current experimental outcomes illustrate that this computational method achieves average specificity, sensitivity, Accuracy, precision and F-scores of 95%, 97.5%, 98%, 97.5% and 97.5%, respectively.","PeriodicalId":55412,"journal":{"name":"Automatika","volume":"64 1","pages":"622 - 633"},"PeriodicalIF":1.9,"publicationDate":"2023-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43024813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fault analysis in the 5-level multilevel NCA DC–AC converter 5级多电平NCA DC-AC变换器故障分析

IF 1.9 4区计算机科学

Automatika Pub Date : 2023-04-28 DOI: 10.1080/00051144.2023.2203553

P. B, S. K, P. E.

引用次数: 7

Real-time NIR camera brightness control using face detection 实时NIR相机亮度控制采用人脸检测

IF 1.9 4区计算机科学

Automatika Pub Date : 2023-04-23 DOI: 10.1080/00051144.2023.2203554

J. Vugrin, S. Lončarić

{"title":"Real-time NIR camera brightness control using face detection","authors":"J. Vugrin, S. Lončarić","doi":"10.1080/00051144.2023.2203554","DOIUrl":"https://doi.org/10.1080/00051144.2023.2203554","url":null,"abstract":"The face image analysis field is a well-established research area in computer vision and image processing. An important requirement for accurate face image analysis is a high-quality input face image. In different real-life scenarios, however, the face is often not properly illuminated, which makes the face analysis very difficult or impossible to accomplish. Although a better performance is obtained by changing the spectrum from visible to near-infrared, it is still not enough for extreme illumination conditions. To obtain a high-quality near-infrared face image, a fast automatic brightness control method using approximate face region detection is proposed, which properly adjusts the brightness of the face part of the image. A novel algorithm for approximate face region detection based on spatio-temporal sampled skin detection is proposed together with the split-range feedback controller and the face absence handle. The proposed method is much faster than state-of-the-art solutions and accurate in approximate face region detection. The complete execution time is lower than 10 milliseconds which makes it suitable for hard real-time embedded system implementation and usage, while the reference brightness value is achieved within 10–15 frames, making it robust to extreme illumination conditions in a scene.","PeriodicalId":55412,"journal":{"name":"Automatika","volume":"64 1","pages":"593 - 605"},"PeriodicalIF":1.9,"publicationDate":"2023-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41814606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interval type-2 fuzzy controller-based power quality enhancement in HSES grid-Integrated scheme HSES电网集成方案中基于区间2型模糊控制器的电能质量增强

IF 1.9 4区计算机科学

Automatika Pub Date : 2023-04-19 DOI: 10.1080/00051144.2023.2203563

V. N., S. N.

引用次数: 0

A novel approach to predict competency and the hidden risk factor by using various machine learning classifiers 一种利用各种机器学习分类器预测能力和潜在风险因素的新方法

IF 1.9 4区计算机科学

Automatika Pub Date : 2023-04-17 DOI: 10.1080/00051144.2023.2200347

Stalin M., K. S

引用次数: 0

Analysis of the high-gain BOCUK DC-DC converter-based PFC using an LQR controller for SMPS applications 用于SMPS应用的基于LQR控制器的高增益BOCUK DC-DC变换器PFC的分析

IF 1.9 4区计算机科学

Automatika Pub Date : 2023-04-16 DOI: 10.1080/00051144.2023.2197823

L. Annie Isabella, M. Umamaheswari, G. Marimuthu

{"title":"Analysis of the high-gain BOCUK DC-DC converter-based PFC using an LQR controller for SMPS applications","authors":"L. Annie Isabella, M. Umamaheswari, G. Marimuthu","doi":"10.1080/00051144.2023.2197823","DOIUrl":"https://doi.org/10.1080/00051144.2023.2197823","url":null,"abstract":"This research work emphasizes on the development of a unique high-gain BOCUK DC-DC converter for Switched Mode Power Supply (SMPS) applications. The high-gain BOOST-CUK (BOCUK) DC-DC converter combines the benefits of both Boost and Cuk converters for attaining instantaneous line current shaping and load regulation. The proposed BOCUK converter provides a non-inverted output and improves the voltage gain and efficiency. The modes of operation of the high-gain BOCUK DC-DC Converter in a Continuous Conduction Mode (CCM) with parasitic elements in the circuit are examined and a state-space model is constructed. The second-order model is derived using the Modified Hankel Matrix Method (HMM) to make the controller design easier. Dual-loop Control employing an inner Linear Quadratic Regulator (LQR) current Controller and an outer Atom Search Optimization (ASO)-tuned Proportional Integral (PI) controller is used to analyze the performance indices of the high-gain converter and fluctuations in line, load and setpoint are investigated. Simulation results prove that the LQR controller is robust in tracking the load voltage and provides excellent line current shaping with low % Total Harmonic Distortion (THD) and nearly Unity Power Factor (UPF). The hardware model for 200W is built and implemented using the TMS320F28027F microcontroller to verify the simulation results.","PeriodicalId":55412,"journal":{"name":"Automatika","volume":"64 1","pages":"565 - 576"},"PeriodicalIF":1.9,"publicationDate":"2023-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45795202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Uniform distribution elephant herding optimization (UDEHO) based virtual machine consolidation for energy-efficient cloud data centres 基于均匀分布大象群优化（UDEHO）的虚拟机整合，用于节能的云数据中心

IF 1.9 4区计算机科学

Automatika Pub Date : 2023-04-05 DOI: 10.1080/00051144.2023.2196116

G. Kanagaraj, G. Subashini

{"title":"Uniform distribution elephant herding optimization (UDEHO) based virtual machine consolidation for energy-efficient cloud data centres","authors":"G. Kanagaraj, G. Subashini","doi":"10.1080/00051144.2023.2196116","DOIUrl":"https://doi.org/10.1080/00051144.2023.2196116","url":null,"abstract":"Information technology (IT) providers should use cloud-based services due to their flexibility, reliability, and scalability to handle the rising requirement for processing capacity. The maintenance of dependable services between cloud providers and their customers in a cloud environment, on the other hand, depends on Quality of Service (QoS) assurance. Virtual machine (VM) consolidation is nondeterministic polynomial time (NP) hard issue, and numerous heuristic techniques have been suggested to solve it. In this work, the suggested VM consolidation technique takes into account both current and future uniform distribution elephant herding optimization (UDEHO) based VM consolidation approaches for resource utilization via host overload detection (utilization prediction based potential overload detection (UP-POD)) and host underload detection (UP-PUD). A UDEHO method efficiently predicts resource use in the future. Depending on the power utilization and the number of migrations, a power-saving value is advised for identifying under-loaded hosts. Furthermore, the CloudSim toolkit is used to construct and test these techniques using the same experimental parameters. Lastly, the findings demonstrate that the suggested methodologies considerably decrease the number of VM migrations by about 0.073%, the energy usage of about 11%, and SLA violations by 6.15% while retaining QoS guarantees when compared to conventional techniques.","PeriodicalId":55412,"journal":{"name":"Automatika","volume":"64 1","pages":"529 - 539"},"PeriodicalIF":1.9,"publicationDate":"2023-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47587077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1