Mugla Journal of Science and Technology最新文献_第8页

A NEW CONTROLLER FOR PHOTOVOLTAIC PANEL FED UNIFIED POWER QUALITY CONDITIONER TO POWER QUALITY IMPROVEMENT 为提高光伏板电能质量，提出了一种新的光伏板电能质量控制器

Mugla Journal of Science and Technology Pub Date : 2021-01-25 DOI: 10.22531/MUGLAJSCI.833386

Yasemin Önal

{"title":"A NEW CONTROLLER FOR PHOTOVOLTAIC PANEL FED UNIFIED POWER QUALITY CONDITIONER TO POWER QUALITY IMPROVEMENT","authors":"Yasemin Önal","doi":"10.22531/MUGLAJSCI.833386","DOIUrl":"https://doi.org/10.22531/MUGLAJSCI.833386","url":null,"abstract":"In this study, a new controller based on the synchronous reference frame (SRF) in a photovoltraic (PV) panel supported three-phase unified power quality conditioner (PV-UPQC ) is proposed to solve power quality problems in power systems. The serial and parallel active power filters fed with energy by PV panels are used together in the PV-UPQC system. In the proposed controller, measurement values are taken from four different points of the power system. The obtained values and DC voltage generated by PV panels are used to calculate the reference current and voltage values. PWM signals of switches used in active filters are produced using moving average filter and space vector-PWM. The algorithm used in both filters consists of two parts. The first is the mppt algorithm, in which the maximum voltage is obtained from the PV panels, and the second is the SRF-based proposed algorithm, where the reference current or voltage is obtained. Simulation and experimental studies of the proposed controller are applied. When the results obtained are examined, the proposed controller for three-phase PV-UPQC gives better results than the traditional SRF based controller in attenuation of harmonics in current and voltage.","PeriodicalId":149663,"journal":{"name":"Mugla Journal of Science and Technology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122167337","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: 1

A STUDY ON COVID-19 DATA WITH LOG-LINEAR MODEL APPROACH 基于对数线性模型方法的COVID-19数据研究

Mugla Journal of Science and Technology Pub Date : 2021-01-22 DOI: 10.22531/MUGLAJSCI.835562

G. Altun

引用次数: 0

USE OF ENSEMBLE METHODS FOR SURVIVAL PREDICTION 使用集合方法进行生存预测

Mugla Journal of Science and Technology Pub Date : 2020-12-30 DOI: 10.22531/muglajsci.804566

Aslıhan ŞENTÜRK ACAR, Nihal Ata Tutkun

引用次数: 1

SECOND ORDER SLIDING MODE CONTROLLER DESIGN WITH OPTIMUM CHARACTERISTIC EQUATION FOR FOUR ROTOR UAV 基于最优特征方程的四旋翼无人机二阶滑模控制器设计

Mugla Journal of Science and Technology Pub Date : 2020-12-30 DOI: 10.22531/muglajsci.783506

U. Tilki, Ali Can Erüst

{"title":"SECOND ORDER SLIDING MODE CONTROLLER DESIGN WITH OPTIMUM CHARACTERISTIC EQUATION FOR FOUR ROTOR UAV","authors":"U. Tilki, Ali Can Erüst","doi":"10.22531/muglajsci.783506","DOIUrl":"https://doi.org/10.22531/muglajsci.783506","url":null,"abstract":"Nowadays, small structured micro unmanned aerial vehicles (UAV’s) with four-rotor appears in military and civilian applications. As the usage of these vehicles becomes widespread, the development of controller structures which allow the UAV’s to follow a specified trajectory precisely is a new area of interest for researchers. In this work, nonlinear mathematical model of a four-rotor UAV is obtained. In order to obtain the mathematical model of UAV Newton-Euler equations are used. In the trajectory tracking system of this vehicle, second order sliding mode controller (SOSMC) is designed. Inside of the controller, control process is divided into two subsystems in order to provide position and attitude control. SOSMC is applied to the fully actuated and under actuated subsystems individually. In the next step, coefficients of the SOSMC is determined with optimum characteristic equation. Based on the reference study, boundaries of the predefined characteristic equation is obtained. Later, appropriate values are observed. In final part, simulation results are obtained, and the results are compared with the reference study. As a result, Optimum Characteristic equation results proved its robustness according to the smaller steady state error and more precise flight performance in trajectory. In this study simulation results are obtained using Simulink/MATLAB environment.","PeriodicalId":149663,"journal":{"name":"Mugla Journal of Science and Technology","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125949402","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

MODELLING NONLINEAR RELATION BY USING RUNNING INTERVAL SMOOTHER, CONSTRAINED B-SPLINE SMOOTHING AND DIFFERENT QUANTILE ESTIMATORS 利用运行区间平滑、约束b样条平滑和不同分位数估计对非线性关系进行建模

Mugla Journal of Science and Technology Pub Date : 2020-12-18 DOI: 10.22531/muglajsci.772523

Burak Dilber, Abdullah Özdemir

引用次数: 0

PREDICTION OF PROXIMATE ANALYSIS AND PROCESS TEMPERATURE OF TORREFIED AND PYROLYZED WOOD PELLETS BY NEAR-INFRARED SPECTROSCOPY COUPLED WITH MACHINE LEARNING 结合机器学习的近红外光谱法预测碳化和热解木屑颗粒的近似分析和工艺温度

Mugla Journal of Science and Technology Pub Date : 2020-12-14 DOI: 10.22531/muglajsci.785974

Meltem Kasapoğlu Çalik, Ebubekir Sıddık Aydin, Özgün Yücel

{"title":"PREDICTION OF PROXIMATE ANALYSIS AND PROCESS TEMPERATURE OF TORREFIED AND PYROLYZED WOOD PELLETS BY NEAR-INFRARED SPECTROSCOPY COUPLED WITH MACHINE LEARNING","authors":"Meltem Kasapoğlu Çalik, Ebubekir Sıddık Aydin, Özgün Yücel","doi":"10.22531/muglajsci.785974","DOIUrl":"https://doi.org/10.22531/muglajsci.785974","url":null,"abstract":"Near-Infrared (NIR) Spectroscopy is a time and cost-effective method to characterize the materials in the food, petrochemical, pharmaceutical, and agricultural industries. Proximate analysis of the carbon-containing materials and investigating the effectiveness of the heat treatments on the material are a particularly time-consuming process. This work presents the four regression methods, i.e., decision tree regression, support vector regression and two versions of ensembles of decision trees to predict the proximate analysis of biomass and heat treatment temperature. Thus, effective method has been proposed to reduce experimental effort and present the characterization of heat-treated biomass feedstock theoretically. Prediction results show that SVR and ENS2 regression methods calibrating the NIR spectra to the values of wood pellet properties achieved good performance with the coefficient of determination (R 2 ) of 0.880- 0.984 and RMSE of 0.444- 5.308 for ash and volatile matter. This study suggests that machine learning-based regression methods with integrated NIR spectroscopy of biomass is promising as an alternative method for rapid characterization. Another possible application of the current study is that it can be used for processed fuel recognition prior to a fully automated fuel quality assessment system in the biomass industry.","PeriodicalId":149663,"journal":{"name":"Mugla Journal of Science and Technology","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113985791","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: 3

DEVELOPING A SPACE SYNTAX-BASED EVALUATION METHOD FOR PROCEDURALLY GENERATED GAME LEVELS 为程序生成的游戏关卡开发基于空间语法的评估方法

Mugla Journal of Science and Technology Pub Date : 2020-12-01 DOI: 10.22531/muglajsci.706895

Emin Alp Biyik, Elif Surer

{"title":"DEVELOPING A SPACE SYNTAX-BASED EVALUATION METHOD FOR PROCEDURALLY GENERATED GAME LEVELS","authors":"Emin Alp Biyik, Elif Surer","doi":"10.22531/muglajsci.706895","DOIUrl":"https://doi.org/10.22531/muglajsci.706895","url":null,"abstract":"Procedural content generation (PCG) has been an essential catalyzer in the last decade with its efficiency in creating game elements such as textures, game levels, and maps. Despite being successfully applied in various studies, new reliable evaluation tools are still needed to assess the quality of the generated game content. One example limitation of procedurally generated game worlds is the lacking spatial configuration. To address this issue, in this study, an assessment method was developed to evaluate the spatial quality of procedurally generated game worlds. For this purpose, Space Syntax was used, which incorporates a set of methods to analyze spatial configurations and movement. The analyses were applied to a new game developed by the authors —the Haunted House— and the performance was evaluated in terms of integration, connectivity, and depth distance. Results show that changing the room dimensions (i.e., 15x15, 25x25, and 35x35 units) modifies the performance measures as well as game design parameters —number of the spawning points (ranging from 1 to 4), critical axes (1 to 5), to name a few. The proposed approach is a first attempt to create various improved spatial configurations and provide an evaluation tool to analyze the PCG algorithms in level design.","PeriodicalId":149663,"journal":{"name":"Mugla Journal of Science and Technology","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115131954","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: 1

Comparison of conventional, balanced and sufficient bootstrapping approaches via confidence intervals and efficiency 通过置信区间和效率比较传统、平衡和充分的自举方法

Mugla Journal of Science and Technology Pub Date : 2020-12-01 DOI: 10.22531/muglajsci.803241

Engin Yildiztepe

引用次数: 0

FRAMEWORK DEVELOPMENT FOR DYNAMIC SYSTEM VALIDATION 动态系统验证的框架开发

Mugla Journal of Science and Technology Pub Date : 2020-11-27 DOI: 10.22531/muglajsci.785381

Eylül Damla Gönül Sezer, Z. Ocak

引用次数: 0

EVALUATION OF WATER QUALITY AND TROPHIC CONDITION OF YUVACIK (KOCAELI-TURKEY) DRINKING WATER DAM RESERVOIR yuvacik (kocaeli-turkey)饮用水库水质及营养状况评价

Mugla Journal of Science and Technology Pub Date : 2020-11-03 DOI: 10.22531/muglajsci.781242

E. Kalipci, Selčuk Varol, Hüseyin Cüce

引用次数: 5