6 results on '"Derdiyok, Adnan"'
Search Results
2. REAL TIME FUZZY BASED SPEED AND DIRECTION ANGLE CONTROL OF AN AUTOMATED GUIDED VEHICLE
- Author
-
Başçı, Abdullah, Derdiyok, Adnan, and Mercan, Emrah
- Subjects
Vehicle system ,Path tracking ,Fuzzy control ,Direction control - Abstract
basci, abdullah/0000-0003-4141-2880 WOS: 000443154600006 Bu çalışmada, Otomatik Yönlendirmeli Aracın (OYA) gövde hızı ve gövde açısı kontrolü gerçek zamanlı olarak bulanık mantık kontrolcü ile gerçekleştirilmiştir. OYA’nın gövde hızı ve gövde açısı denetimi ile aracın iki boyutlu düzlemde istenilen yörüngeyi takip etmesi sağlanmıştır. Ayrıca, bulanık mantık kontrolcünün performansı PI kontrolcü ile mukayese edilmiş ve deneysel sonuçlar bulanık mantık kontrolcünün PI kontrolcüye oranla daha kararlı ve daha uygun kontrol işaretleri ürettiğini ve dinamik değişimlere daha hızlı cevap verdiğini göstermiştir. Kontrolcü performansları ayrıca ani harici bozucu etki ve ekstra yük için incelenmiş ve başarılı sonuçlar elde edilmiştir In this paper a fuzzy controller is applied to velocity and direction angle control of a certain type of wheeled mobile robots called Automated Guided Vehicles (AGVs). The velocity and direction angle of the AGV are controlled to keep the vehicle on desired path. A PI controller is also applied to AGV in order to show the robustness of the fuzzy controller. Experimental results prove that the fuzzy controller shows better tracking performance than the PI controller in terms of robustness, smoothness and fast dynamics. Results are also given for sudden disturbance and extra load conditions and satisfied results are obtained.
- Published
- 2015
3. An Adaptive-Fuzzy Fractional-Order Sliding Mode Controller Design for an Unmanned Vehicle.
- Author
-
Orman, Kamil, Can, Kaan, Basci, Abdullah, and Derdiyok, Adnan
- Subjects
REMOTELY piloted vehicles ,SLIDING mode control ,MOBILE robots ,FUZZY control systems ,ROBOTIC trajectory control - Abstract
In this paper, speed and direction angle of a four wheel skid-steered mobile robot (4 WD SSMR) has been controlled via adaptive-fuzzy fractional-order sliding mode controller (AFFOSMC) under different speed and angle reference signals. The hybrid control method is designed to combine all advantages that controllers have such as flexibility realized by fractional order calculation, robustness to disturbances and parameters variations provided by sliding mode controller (SMC) as well as adaptation of G constant of SMC via fuzzy controller, simultaneously. Also, a fractionalorder SMC is applied to the system for the same reference speed and angle references to show the effects of the changes and adaptation of G constant. Experimental results show that the AFFOSMC has better trajectory tracking performance than the FOSMC. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
4. Implementation of an adaptive fuzzy compensator for coupled tank liquid level control system.
- Author
-
Başçi, Abdullah and Derdiyok, Adnan
- Subjects
- *
ADAPTIVE computing systems , *FUZZY systems , *SYNCHRONOUS capacitors , *CONTROL theory (Engineering) , *HYDRAULICS - Abstract
In this paper, an adaptive fuzzy control (AFC) system is proposed to realize level position control of two coupled water tanks, often encountered in practical process control. The fuzzy control system includes an adaptive model identifier and controller. The gains of AFC are obtained by using the fuzzy identifier model which is defined by real system outputs and control inputs. The parameters of fuzzy identifier model are adjusted online by using recursive least square algorithm. Because the controller has a recursive form it treats model uncertainties and external disturbances in an implicit way. Thus there is no need to specify uncertainty and disturbances for this controller design in advance. A well-tuned conventional proportional integral (PI) controller is also applied to the two coupled tank system for comparison with the AFC system. Experimentation of the coupled tank system is realized in two different configurations, namely configuration #1 and configuration #2 respectively. In configuration #1, the water level in the top tank is controlled by a pump. In configuration #2, the water level in the bottom tank is controlled by the water flow coming out of the top tank. Experimental results prove that the AFC shows better trajectory tracking performance than PI controller in that the plant transient responses to the desired output changes have shorter settling time and smaller magnitude overshot/undershoot. Robustness of the AFC with respect to water level variation and capability to eliminate external disturbances are also achieved. Experimental results show that AFC is a strong and a practical choice for liquid level control. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
5. Anahtarlamalı relüktans motorun doyma modeline ortak endüktans etkilerinin inmcelenmesi ve bulanık ve kayan kipli denetleyicilerle moment dalgalanmasının azaltılması
- Author
-
Derdiyok, Adnan, Pastacı, Halit, and Diğer
- Subjects
Reluctance motors ,Elektrik ve Elektronik Mühendisliği ,Fuzzy control ,Electrical and Electronics Engineering - Abstract
ÖZET Anahtarlamalı Relüktans Motoru (ARM) gerçekte bilinen en eski elektrik makinasıdır. Motorun çalışabilmesi için hızlı bir biçimde açma kapama yapabilecek anahtar elemanlara ihtiyaç duyulmaktadır. Fakat o yıllarda bu işlemi yapabilecek yan iletken anahtar elemanlar mevcut olmadığından bu motor üzerinde pek durulmamıştır. Yan iletken teknolojisindeki gelişmeler ARM'yi tekrar gündeme getirmiştir. ARM'nin diğer makinalara nazaran avantajları olmasına rağmen, bazı dezavantajları da vardır. Bunlardan en önemlisi motorun çalışması sırasında meydana gelen mil momentindeki dalgalanmadır. Momentteki bu dalgalanma kendisini belirgin bir biçimde önce rulmanlarda titreşim olarak, daha sonra da akustik gürültü olarak hissettirmektedir. Rulmanlara gelen bu titreşim kuvveti bir süre sonra rulmanları bozmaktadır. Motor dizaynında yapılacak değişikliklerle veya kontrol yöntemlerinin uygulanmasıyla, gerek titreşim gerekse de akustik gürültünün minimize edilebilmesi mümkündür. Bu çalışmada öncelikle, lineer bölgede endüktans profilinin de lineer değiştiği kabul edilerek motorun modeli kuruldu ve dinamik davranışı incelendi. Motora akım bilgisine dayalı kontrol teknikleri uygulanarak motorun çıkış performansının iyileştirildiği gösterildi. Bu motorun paramatreleri, gerçekte hem rotor açısının ve hem de motor akımının bir nonlineer fonksiyonu olarak değiştiğinden, motor denklemleri akıma ve rotor açısına bağlı olarak tanımlanarak simülasyonu gerçekleştirildi. Aynca ARM'nin nonlineer modeline ortak endüktans bilgileri de dahil edilerek sistemin dinamik davranışı incelendi ve ortak endüktans alanlarının motorun çıkış performansı üzerindeki etkileri gösterildi. Akım kontrol teknikleriyle ARM'nin faz geçiş noktalarındaki çökmeler iyileştirildi ve momentteki alçak frekanslı salınımlar ise nonlineer sistemlere kolayca uygulanabilen Bulanık Denetim ve Kayan Kipli Denetim teknikleriyle giderilerek tahrik sistemleri için arzulanan çıkışı vermesi sağlandı. 8/6, 4kWhk bir ARM üzerinde yapılan deneysel çalışmaların sonuçlan, simülasyon sonuçlan ile karşılaştırılarak, sonuçların uyumlu olduğu gösterildi. Ayrıca ARM'nin pozisyon kontrolünün gerçekleştirilmesi için tasarlanan- kontrolcunun yapısı hem lojik yöntemlerle ve hem de kayan kipli denetim tekniğiyle kuruldu ve sistemin ABSTRACT In recent years, high interest has been shown on the use of variable reluctance motor in many application areas because of simple motor construction and unidirectional power inverter supply. It has no brushes and no rotor windings and its stator has simpler concentrated windings. The motor windings are in series with each main power switching device. The motor is operated with controlled current and controlled conduction angles. In SRM, the motor torque is proportional to the square of the energized winding current, the inverter needs not to feed bidirectional currents. Hence, the scheme of inverters feeding the SRM is unipolar type where one switch is generally used per phase.. Because of advantages indicated above SR Motors have been prefered instead of DC motor and inverter driven induction motor in many variable speed application areas. However, excessive torque ripple, especially at low speeds is still one of the important reasons for SRM not to be prefered in some variable speed drive market This torque ripple comes from motor's stepping nature and has undesirable effects to the bearing system and produces acoustic noise. It does not allow to use SR motor in servo applications. The aim of this study is to establish nonlinear model of SRM including the effect of mutual inductaces and to observe the dynamic behaviour of machine, and also it is aimed to reduce excessive torque ripple of SRM. hi this purpose, the linear model of SRM is obtained firstly and the motor is operated under current control techniques to reduce torque dip during phase commutation. Then the nonlinear model of SRM is set and the dynamic behaviour of machine is observed by computer simulation results. Also the effect of mutual inductancaes are included in the nonlinear model of SRM and their effects on the performance of the machine are To reduce low frequency torque ripple, new nonlinear control techniques, fuzzy controller and sliding mode controller are applied to the speed control loop of SRM which has a nonlinear model including the effects of mutual inductaces, and results show that torque ripple is sufficiently eliminated. Besides, the position control of SRM is studied bv losic method and slidins mode control method. 148
- Published
- 1997
6. OTOMATİK YÖNLENDİRMELİ BİR ARACIN GÖVDE HIZI VE GÖVDE AÇISININ BULANIK MANTIK İLE GERÇEK ZAMANLI KONTROLÜ.
- Author
-
BAŞÇI, Abdullah, DERDİYOK, Adnan, and MERCAN, Emrah
- Abstract
In this paper a fuzzy controller is applied to velocity and direction angle control of a certain type of wheeled mobile robots called Automated Guided Vehicles (AGVs). The velocity and direction angle of the AGV are controlled to keep the vehicle on desired path. A PI controller is also applied to AGV in order to show the robustness of the fuzzy controller. Experimental results prove that the fuzzy controller shows better tracking performance than the PI controller in terms of robustness, smoothness and fast dynamics. Results are also given for sudden disturbance and extra load conditions and satisfied results are obtained. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.