3 research outputs found
Görüntü işleme ve bulanık mantık tabanlı pantograf geometrik modelin tespiti
Bu çalışmada elektrikli trenlerde kullanılan
pantograf türünün belirlenmesi için model tabanlı bir
yaklaşım önerilmektedir. Elektrikli trenlerin kullanım
şartlarına göre pantograf katener sistemin yapısı
değişmektedir. Pantograf katener sistemlerinden alınan
görüntüler kullanılarak pantograf sisteminin geometrik
modeli oluşturulmaktadır. Oluşturulan modelin hangi tür
pantografa ait olduğu tespit edilmektedir. İlk olarak kenar
çıkarımı ve Hough dönüşümü ile pantografta bulunan bütün
doğrular tespit edilmektedir. Tespit edilen doğrulardan
alınan bazı bilgiler bulanık mantık işleminde kullanılarak
pantografın türü belirlenmektedir. Pantograf türünün
belirlenmesi pantografın yüksekliğini tahmin etmek ve
katener ile pantograf arasındaki temas noktasını analiz
etmek için uygundur. Böylece ark oluşumu ve aşırı temas
kuvveti gibi temas noktası problemleri tespit edilebilecektir.In this study, a model based approach is
proposed for the recognition of the pantograph type used in
electric trains. The shape of the pantograph-catenary
changes according to usage conditions of electric trains. A
geometric model of the pantograph is constructed by using
images taken from the pantograph-catenary system. The
pantograph type is determined by using the constructed
model. First, all straight lines are extracted from the image
by applying the edge detection and Hough transform to the
image. Some knowledge obtained from straight lines are
given to fuzzy logic and type of pantograph is determined.
The determination of pantograph type is useful to estimate
the pantograph height and to analyze of contact point
between pantograph and catenary. Therefore, contact point
problems such as arcing and excessive contact force can be
detected
Reinforcement Learning Based Artificial Immune Classifier
One of the widely used methods for classification that is a decision-making process is artificial immune systems. Artificial immune systems based on natural immunity system can be successfully applied for classification, optimization, recognition, and learning in real-world problems. In this study, a reinforcement learning based artificial immune classifier is proposed as a new approach. This approach uses reinforcement learning to find better antibody with immune operators. The proposed new approach has many contributions according to other methods in the literature such as effectiveness, less memory cell, high accuracy, speed, and data adaptability. The performance of the proposed approach is demonstrated by simulation and experimental results using real data in Matlab and FPGA. Some benchmark data and remote image data are used for experimental results. The comparative results with supervised/unsupervised based artificial immune system, negative selection classifier, and resource limited artificial immune classifier are given to demonstrate the effectiveness of the proposed new method