Özet – Bu çalışmada, motorlu kara taşıtlarının seyir dinamiği karakteristiklerinin sanal ortamda değerlendirilebilmesi amacıyla geliştirilmiş MATLAB tabanlı bir taşıt simülasyonu uygulaması tanıtılmıştır. Uygulama, taşıt gövdesinin ve tekerleklerin uzaysal hareketlerinden türetilen ikinci mertebe diferansiyel denklem ifadelerini temel alan, beş kütleli ve on beş genel koordinatla kinematik ve kinetik olarak ifade edilebilen bir matematiksel model yardımıyla oluşturulmuştur. Bağımsız süspansiyon sistemi, taşıt gövdesi, güç iletim sistemi ve lastik tekerlek gibi alt programlardan oluşan bu uygulamadan yararlanılarak, çizgisel hız, direksiyon açısı gibi belirli girdiler altında iki akslı bir kara taşıtının, düzlemsel yol yüzeyindeki davranışları değerlendirilmiş, elde edilen sonuçlar, endüstriyel amaçlı bir paket yazılımdan elde edilen sonuçlarla karşılaştırılmıştır. Anahtar Kelimeler– Taşıt dinamiği, hareket denklemleri, simülasyon, matematiksel model, süspansiyon sistemi, güç iletim sistemi
{"title":"Yol Taşıtlarının Dinamik Davranışlarının İncelenmesi için MATLAB® Tabanlı Bir Simülasyon Uygulaması","authors":"Mehmet Murat Topaç, Nusret Sefa Kuralay","doi":"10.36287/setsci.4.6.100","DOIUrl":"https://doi.org/10.36287/setsci.4.6.100","url":null,"abstract":"Özet – Bu çalışmada, motorlu kara taşıtlarının seyir dinamiği karakteristiklerinin sanal ortamda değerlendirilebilmesi amacıyla geliştirilmiş MATLAB tabanlı bir taşıt simülasyonu uygulaması tanıtılmıştır. Uygulama, taşıt gövdesinin ve tekerleklerin uzaysal hareketlerinden türetilen ikinci mertebe diferansiyel denklem ifadelerini temel alan, beş kütleli ve on beş genel koordinatla kinematik ve kinetik olarak ifade edilebilen bir matematiksel model yardımıyla oluşturulmuştur. Bağımsız süspansiyon sistemi, taşıt gövdesi, güç iletim sistemi ve lastik tekerlek gibi alt programlardan oluşan bu uygulamadan yararlanılarak, çizgisel hız, direksiyon açısı gibi belirli girdiler altında iki akslı bir kara taşıtının, düzlemsel yol yüzeyindeki davranışları değerlendirilmiş, elde edilen sonuçlar, endüstriyel amaçlı bir paket yazılımdan elde edilen sonuçlarla karşılaştırılmıştır. Anahtar Kelimeler– Taşıt dinamiği, hareket denklemleri, simülasyon, matematiksel model, süspansiyon sistemi, güç iletim sistemi","PeriodicalId":6817,"journal":{"name":"4th International Symposium on Innovative Approaches in Engineering and Natural Sciences Proceedings","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91528765","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}
In this presentation, conditions and explicit formulas for the realization of a relaxed fourth-order linear time-varying system as a cascade connection of two commutative first and third-order systems are given. The results are supported by an example.
{"title":"Decomposition of a Fourth-Order Linear Time-Varying System","authors":"M. E. Koksal, S. Ibrahim","doi":"10.36287/setsci.4.6.043","DOIUrl":"https://doi.org/10.36287/setsci.4.6.043","url":null,"abstract":"In this presentation, conditions and explicit formulas for the realization of a relaxed fourth-order linear time-varying system as a cascade connection of two commutative first and third-order systems are given. The results are supported by an example.","PeriodicalId":6817,"journal":{"name":"4th International Symposium on Innovative Approaches in Engineering and Natural Sciences Proceedings","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85559397","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}
Abstract – – In this paper, driving point impedance functions, 1 2 ( ) .... Z s A c s b c s b , which are frequently used in electrical engineering, have been considered for boundary analysis of the Schwarz lemma. Accordingly, considering the 1 s , 2 s , ..., n s points in the right half plane which are different than s b , Schwarz lemma has been obtained for positive real functions. In addition, a result of the Rogosinski’s lemma has been used to prove the new inequalities and the derivative of the driving point impedance function has been evaluated from below by considering Taylor expansion coefficients 1 c and 2 c . For all presented inequalities, sharpness analysis has been carried out and extremal functions corresponding to different driving point impedance functions have been obtained. It is possible to say that simple circuits can be synthesized using the obtained transfer functions.
摘要:本文研究驱动点阻抗函数，1 2 ()....在电气工程中经常使用的Z s A c s b c s b，已被考虑用于Schwarz引理的边界分析。因此，考虑到1、2、……，右半平面上n个不同于s b的点，得到了正实函数的Schwarz引理。此外，利用Rogosinski引理的结果证明了新的不等式，并通过考虑泰勒展开系数1c和2c，从下面求出了驱动点阻抗函数的导数。对所提出的不等式进行了锐度分析，得到了不同驱动点阻抗函数对应的极值函数。可以说，使用得到的传递函数可以合成简单的电路。
{"title":"A Bound for the Derivative of Positive Real Functions and Corresponding Circuits","authors":"B. Örnek, Canan Oral, Timur Düzenli̇","doi":"10.36287/setsci.4.6.083","DOIUrl":"https://doi.org/10.36287/setsci.4.6.083","url":null,"abstract":"Abstract – – In this paper, driving point impedance functions, 1 2 ( ) .... Z s A c s b c s b , which are frequently used in electrical engineering, have been considered for boundary analysis of the Schwarz lemma. Accordingly, considering the 1 s , 2 s , ..., n s points in the right half plane which are different than s b , Schwarz lemma has been obtained for positive real functions. In addition, a result of the Rogosinski’s lemma has been used to prove the new inequalities and the derivative of the driving point impedance function has been evaluated from below by considering Taylor expansion coefficients 1 c and 2 c . For all presented inequalities, sharpness analysis has been carried out and extremal functions corresponding to different driving point impedance functions have been obtained. It is possible to say that simple circuits can be synthesized using the obtained transfer functions.","PeriodicalId":6817,"journal":{"name":"4th International Symposium on Innovative Approaches in Engineering and Natural Sciences Proceedings","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90581468","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}
In this study, the impregnation of Lareks wood with borax and nanotechnological varnish at various vacuum / diffusion times according to ASTM 1413-76 standards and the changes on technological properties were investigated. Pressure resistance properties were determined from mechanical properties. According to the results of the experiment; the highest pressure resistance was achieved at 60 minutes vacuum and 20 minutes diffusion (83.03 N / mm), the lowest control sample (67.83 N / mm).
本研究根据ASTM 1413-76标准，研究了硼砂和纳米技术清漆在不同真空/扩散时间下对云雀木的浸渍和工艺性能的变化。通过力学性能测定耐压性能。根据实验结果;在真空60 min、扩散20 min时，其耐压性最高(83.03 N / mm)，对照组耐压性最低(67.83 N / mm)。
{"title":"Wood Protection in Varnish (Nano) and Pressure Resistance Change","authors":"Hüseyin Tan","doi":"10.36287/setsci.4.6.066","DOIUrl":"https://doi.org/10.36287/setsci.4.6.066","url":null,"abstract":"In this study, the impregnation of Lareks wood with borax and nanotechnological varnish at various vacuum / diffusion times according to ASTM 1413-76 standards and the changes on technological properties were investigated. Pressure resistance properties were determined from mechanical properties. According to the results of the experiment; the highest pressure resistance was achieved at 60 minutes vacuum and 20 minutes diffusion (83.03 N / mm), the lowest control sample (67.83 N / mm).","PeriodicalId":6817,"journal":{"name":"4th International Symposium on Innovative Approaches in Engineering and Natural Sciences Proceedings","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90604979","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}
Özet – Günümüzde gelişen teknolojiyle birlikte artan sera gazı emisyonları ve küresel ısınma problemleri yenilenebilir enerji kaynaklarının kullanımını önemli ölçüde artırmıştır. Yenilenebilir enerji kaynakları güneş enerjisi, rüzgar enerjisi, jeotermal enerji, hidrolik enerji, biyokütle enerjisi ve hidrojen enerjisi olarak sınıflandırılabilir. Güneş enerjisi büyük ölçüde ısıl radyasyon yayması, temiz ve sınırsız olması bakımından yenilenebilir enerji kaynakları arasında çok önemli bir yere sahiptir. Konsantrasyonlu fotovoltaik termal sistemler (KFVT) güneş enerjisinden elektrik ve ısıl enerji elde edilmesinde kullanılan cihazlardan bir tanesidir. KFVT sistem ile güneş enerjisi direkt olarak elektriğe çevrilmekte ve bu sırada fotovoltaik modül üzerinde oluşan atık ısıdan akışkanların ısıtılmasında faydalanılmaktadır. Bu çalışmada bir KFVT sistemde farklı akışkan kullanılması ve kanal geometrisinin değiştirilmesi durumunda oluşan elektrik üretimi ve ısı kapasitesi termodinamik olarak incelenmiştir. KFVT sistem dikdörtgen bir akışkan kanalına sahip olup dikdörtgen kanalın en/boy oranı değiştirilerek elde edilen modül sıcaklıkları, elektrik üretimi ve akışkan sıcaklıkları birbiri ile karşılaştırılmıştır. Isı transfer akışkanı olarak organik soğutucular kullanılmıştır. Akışkanların değişken termofiziksel özellikleri sistemin elektriksel verimini ve atık ısı miktarını farklı oranlarda etkilemiştir. Termodinamik analizler sonucu elde edilen bulgular elektrik üretimini, modül sıcaklılarını, akışkan çıkış sıcaklıklarını ve sistem verimini içeren grafikler halinde sunulmuştur.
{"title":"Konsantrasyonlu Fotovoltaik Termal Bir Sistemde Soğutucu Akışkan Tipi ve Kanal Geometrisinin Elektriksel Verim ve Isıtma Kapasitesine Etkisi","authors":"Burak Kurşun, Korhan Ökten","doi":"10.36287/setsci.4.6.089","DOIUrl":"https://doi.org/10.36287/setsci.4.6.089","url":null,"abstract":"Özet – Günümüzde gelişen teknolojiyle birlikte artan sera gazı emisyonları ve küresel ısınma problemleri yenilenebilir enerji kaynaklarının kullanımını önemli ölçüde artırmıştır. Yenilenebilir enerji kaynakları güneş enerjisi, rüzgar enerjisi, jeotermal enerji, hidrolik enerji, biyokütle enerjisi ve hidrojen enerjisi olarak sınıflandırılabilir. Güneş enerjisi büyük ölçüde ısıl radyasyon yayması, temiz ve sınırsız olması bakımından yenilenebilir enerji kaynakları arasında çok önemli bir yere sahiptir. Konsantrasyonlu fotovoltaik termal sistemler (KFVT) güneş enerjisinden elektrik ve ısıl enerji elde edilmesinde kullanılan cihazlardan bir tanesidir. KFVT sistem ile güneş enerjisi direkt olarak elektriğe çevrilmekte ve bu sırada fotovoltaik modül üzerinde oluşan atık ısıdan akışkanların ısıtılmasında faydalanılmaktadır. Bu çalışmada bir KFVT sistemde farklı akışkan kullanılması ve kanal geometrisinin değiştirilmesi durumunda oluşan elektrik üretimi ve ısı kapasitesi termodinamik olarak incelenmiştir. KFVT sistem dikdörtgen bir akışkan kanalına sahip olup dikdörtgen kanalın en/boy oranı değiştirilerek elde edilen modül sıcaklıkları, elektrik üretimi ve akışkan sıcaklıkları birbiri ile karşılaştırılmıştır. Isı transfer akışkanı olarak organik soğutucular kullanılmıştır. Akışkanların değişken termofiziksel özellikleri sistemin elektriksel verimini ve atık ısı miktarını farklı oranlarda etkilemiştir. Termodinamik analizler sonucu elde edilen bulgular elektrik üretimini, modül sıcaklılarını, akışkan çıkış sıcaklıklarını ve sistem verimini içeren grafikler halinde sunulmuştur.","PeriodicalId":6817,"journal":{"name":"4th International Symposium on Innovative Approaches in Engineering and Natural Sciences Proceedings","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89196343","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}
Nowadays, nature-inspired structural colorization takes increasing attention due to its exceptional optical properties. One-dimensional (1-D) photonic crystals are new kind of optical materials which can be used to obtain structural colorization. In recent years many studies carried out about 1-D photonic crystals because of its simplicity and cost effectiveness. In this study, CuO/TiO2 multilayer thin films were prepared by the sol-gel spin coating technique on the boron silicate substrate. To understand the effect of rare-earth element doping on structural colorization, Cerium and Europium ions doped CuO layers were prepared with different dopant concentrations. Structural and morphological properties of 1-D photonic crystals were investigated by Xray diffraction (XRD), Scanning electron microscopy (SEM) and optical microscopy. Obtained results show that CuO/TiO2 multilayer thin films with different Cerium and Europium concentrations were successfully prepared. Additionally, red and green colorization was achieved with different type and concentrations of dopant elements and more vivid colors were obtained as a result of the increment in dopant concentration.
{"title":"Colorization of 1-D photonic crystals with Rare-earth element doping","authors":"O. Keskin, N. Funda Ak Azem, I. Birlik, R. Dalmış","doi":"10.36287/setsci.4.6.109","DOIUrl":"https://doi.org/10.36287/setsci.4.6.109","url":null,"abstract":"Nowadays, nature-inspired structural colorization takes increasing attention due to its exceptional optical properties. One-dimensional (1-D) photonic crystals are new kind of optical materials which can be used to obtain structural colorization. In recent years many studies carried out about 1-D photonic crystals because of its simplicity and cost effectiveness. In this study, CuO/TiO2 multilayer thin films were prepared by the sol-gel spin coating technique on the boron silicate substrate. To understand the effect of rare-earth element doping on structural colorization, Cerium and Europium ions doped CuO layers were prepared with different dopant concentrations. Structural and morphological properties of 1-D photonic crystals were investigated by Xray diffraction (XRD), Scanning electron microscopy (SEM) and optical microscopy. Obtained results show that CuO/TiO2 multilayer thin films with different Cerium and Europium concentrations were successfully prepared. Additionally, red and green colorization was achieved with different type and concentrations of dopant elements and more vivid colors were obtained as a result of the increment in dopant concentration.","PeriodicalId":6817,"journal":{"name":"4th International Symposium on Innovative Approaches in Engineering and Natural Sciences Proceedings","volume":"110 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87667181","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}
In this study, mathematical modeling of outer rotor brushless direct current motor (BLCD) is performed. Brushless direct current motor is highly preferred in industrial applications when compared the other motor types with considering advantages and disadvantages. Producing higher torque with smaller dimensions, being easily controllable and developing high efficiency electronic materials can be given such an example of these advantages. In this study, an outer rotor brushless DC motor which was used in the laboratory is modeled. This motor hasn’t currently information parameters. For this reason, first of all, the metric measurements, phase winding orders are obtained for the motor parameters. With the motor parameters that we have, the motor was created and analyzed in Maxwell program environment. And then the parameters (torque constant, back EMF constant, phase resistance, etc.) were obtained required for the simulation. Mathematical model was completed with the obtained parameters in Matlab / Simulink environment. So, Torque characteristics, motor speed and trapezoidal back-EMF were determined. The motor currents matched with the Maxwell and Matlab / Simulink programs. So the accuracy of the simulation modeling has been confirmed.
{"title":"THE SIMULATION OF MATHAMETICAL MODEL OF OUTER ROTOR BLDC MOTOR","authors":"M. Kelek, I. Çelik, U. Fidan, Y. Oğuz","doi":"10.36287/setsci.4.6.106","DOIUrl":"https://doi.org/10.36287/setsci.4.6.106","url":null,"abstract":"In this study, mathematical modeling of outer rotor brushless direct current motor (BLCD) is performed. Brushless direct current motor is highly preferred in industrial applications when compared the other motor types with considering advantages and disadvantages. Producing higher torque with smaller dimensions, being easily controllable and developing high efficiency electronic materials can be given such an example of these advantages. In this study, an outer rotor brushless DC motor which was used in the laboratory is modeled. This motor hasn’t currently information parameters. For this reason, first of all, the metric measurements, phase winding orders are obtained for the motor parameters. With the motor parameters that we have, the motor was created and analyzed in Maxwell program environment. And then the parameters (torque constant, back EMF constant, phase resistance, etc.) were obtained required for the simulation. Mathematical model was completed with the obtained parameters in Matlab / Simulink environment. So, Torque characteristics, motor speed and trapezoidal back-EMF were determined. The motor currents matched with the Maxwell and Matlab / Simulink programs. So the accuracy of the simulation modeling has been confirmed.","PeriodicalId":6817,"journal":{"name":"4th International Symposium on Innovative Approaches in Engineering and Natural Sciences Proceedings","volume":"208 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80521961","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}
As it is known, the importance and consumption of water are increasing day by day due to industrial growth, population growth, advancement of technology and increasing living standards. Because of the limited water resources, the design, planning, forecasting of water transmission and distribution systems should be made more carefully and the water resources should be used more efficiently. In this context, the importance of the factors affecting water demand is increasing day by day. Population, economic cycles, education, technology, climatic conditions, price, and many other factors have their effects on water consumption. By designating these effects in a healthy and reliable way, it is possible to design systems that are more reliable and to use water resources more efficiently. In the present study, by using water consumption data of 4 different neighborhoods of the central districts of Konya with different characteristics, the effects of meteorological variables on water consumption according to the characteristics of neighborhoods were investigated by using Multiple Regression Analysis.
{"title":"Investigation of Variables That Affect the Urban Water Consumption Over Some Districts of Konya City","authors":"Omıdullah Zeın Ebad, V. Yılmaz","doi":"10.36287/setsci.4.6.039","DOIUrl":"https://doi.org/10.36287/setsci.4.6.039","url":null,"abstract":"As it is known, the importance and consumption of water are increasing day by day due to industrial growth, population growth, advancement of technology and increasing living standards. Because of the limited water resources, the design, planning, forecasting of water transmission and distribution systems should be made more carefully and the water resources should be used more efficiently. In this context, the importance of the factors affecting water demand is increasing day by day. Population, economic cycles, education, technology, climatic conditions, price, and many other factors have their effects on water consumption. By designating these effects in a healthy and reliable way, it is possible to design systems that are more reliable and to use water resources more efficiently. In the present study, by using water consumption data of 4 different neighborhoods of the central districts of Konya with different characteristics, the effects of meteorological variables on water consumption according to the characteristics of neighborhoods were investigated by using Multiple Regression Analysis.","PeriodicalId":6817,"journal":{"name":"4th International Symposium on Innovative Approaches in Engineering and Natural Sciences Proceedings","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79787831","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}
{"title":"Evaluation of Demand for Furniture Products by Web Mining","authors":"S. Bardak, T. Bardak","doi":"10.36287/setsci.4.6.021","DOIUrl":"https://doi.org/10.36287/setsci.4.6.021","url":null,"abstract":"","PeriodicalId":6817,"journal":{"name":"4th International Symposium on Innovative Approaches in Engineering and Natural Sciences Proceedings","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91234897","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}
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