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Bulunan: 19 Adet 0.001 sn
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Erişime Açık

Investigation Of Applications Of Fibonacci Sequence And Golden Ratio In Music

BAKIM, Sümeyye | YÖRE, Seyit

In studies presented in the literature, relationships between music and mathematics can sometimes be observed. Leonardo Fibonacci (1170-1250) is well known in mathematics with the Fibonacci Sequence and this sequence used to identify numbers in various music elements, too. In related studies, these numbers have been used to demonstrate the existence of the ‘Golden Ratio’ using methods and theories borrowed from the components of music. Nevertheless, this relationship has subsequently been seen inaccurate. The studies that previously based some works of Chopin, Mozart, Beethoven, Bach and Bartó ...Daha fazlası

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İki Linkli Robot Manipülatörün Modellenmesi ve Bozucu Etki Altında Yörünge Kontrolü

İLGEN, Sinan | DURDU, Akif | GÜLBAHÇE, Erdi | ÇAKAN, Abdullah

Bu çalışmada, iki linkli düzlemsel bir robot manipülatörün bozucu etki altında yörünge kontrolü yapılmıştır. ADAMS yazılımı vasıtasıyla manipülatörün sanal bir prototipi oluşturulmuştur. Ayrıca, sistem için gerekli olan kontrolcü tasarımı MATLAB/Simulink ortamında gerçekleştirilmiştir. Sistemin simülasyonu ise MATLAB ve ADAMS yazılımlarının eş zamanlı olarak çalıştırılması ile gerçekleştirilmiştir. Robot manipülatör iki giriş ve dört çıkışa sahiptir. Girişler, her iki eklemin tahriki için gerekli olan motor torkları, çıkışlar ise her iki eklemin açıları ve uç elemanın konumunun x-y bileşenleri ...Daha fazlası

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Optimal Tuning of the SMC Parameters for a Two Two-Link Manipulator Co-Simulation Control

İLGEN, Sinan | DURDU, Akif | GÜLBAHÇE, Erdi | ÇAKAN, Abdullah

—This paper presents the trajectory tracking control of a two-link planar robot manipulator using MSC Adams and MATLAB co-simulation which enables the innovative virtual prototyping of the systems without any mathematical expressions. Firstly, the tracking control performance of the planar manipulator is investigated using the Sliding Mode Control (SMC) controller and the Proportional Integral Derivative (PID) controller in terms of the performance analysis. As a result, the SMC demonstrates effective control performances compared to the PID controller according to the required trajectory, set ...Daha fazlası

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Modelling and Control of a Single-Wheel Inverted Pendulum by Using Adams and Matlab

İLGEN, Sinan | OFLAZ, Emre | GÜLBAHÇE, Erdi | ÇAKAN, Abdullah

This research is aimed at developing a multi-body simulation model and balancing control of a single-wheeled inverted pendulum. A virtual prototype of the system has been built by using Adams software and it is simulated in both Matlab and Adams software together. The Adams model has two inputs (disturbance and control) and two outputs (pendulum angle and wheel position). Proportional-integral-derivative (PID) controller is designed and applied for balancing control and simulation of pendulum angle. The modelling and control results show that the Proportional-integral-derivative (PID) controll ...Daha fazlası

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Unsupervised Change Detection in Landsat Images with Atmospheric Artifacts: A Fuzzy Multiobjective Approach

YAVARIABDI, Amir | KUSETOĞULLARI, Hüseyin

A new unsupervised approach based on a hybrid wavelet transform and Fuzzy Clustering Method (FCM) with Multiobjective PMakale Swarm Optimization (MO-PSO) is proposed to obtain a binary change mask in Landsat images acquired with different atmospheric conditions. The proposed method uses the following steps: preprocessing, classification of preprocessed image, and binary masks fusion. Firstly, a photometric invariant technique is used to transform the Landsat images from RGB to HSV colour space. A hybrid wavelet transform based on Stationary (SWT) and Discrete Wavelet (DWT) Transforms is applie ...Daha fazlası

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Change Detection in Multispectral Landsat Images Using Multi-Objective Evolutionary Algorithms

YAVARIABDI, Amir

In this letter, we propose a novel method for unsupervised change detection in multitemporal multispectral Landsat images using multiobjective evolutionary algorithm (MOEA). The proposed method minimizes two different objective functions using MOEA to provide tradeoff between each other. The objective functions are used for evaluating changed and unchanged regions of the difference image separately. The difference image is obtained by using the structural similarity index measure method, which provides combination of the comparisons of luminance, contrast, and structure between two images. By ...Daha fazlası

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Sliding Mode Control of a Two-link Robot Manipulator Using Adams & Matlab Software

İLGEN, Sinan | DURDU, Akif | GÜLBAHÇE, Erdi | ÇAKAN, Abdullah

This paper presents the design of a sliding mode controller (SMC) for trajectory tracking problem for a two-link planar robot manipulator. A virtual prototype of the manipulator has been built by using Adams software. Also, the controller works is achieved in Matlab/Simulink software. The system is simulated in both Matlab and Adams software together which is called co-simulation. The manipulator system has two inputs (torques of actuators) and four outputs (angle of 1st joint, angle of 2nd joint and x-y components of end effector position). The sliding mode controller (SMC) is designed with t ...Daha fazlası

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Advanced-Collision-Map-Based On-line Collision and Deadloack Avoidance between Two Robot Manipulators with PTP Commands

AFAGHANI, Ahmad Yasser

This research aims to build an on-line system for avoiding collisions and deadlocks between two robot manipulators which are controlled using point-to-point (PTP) commands. Both robots are sharing the same workspace and have no prior knowledge of the commands which will be sent after starting the system. We have proposed a collision map concept for detecting the collisions between the end-effectors of the robots [1]. In this work, an advanced collision map method has been created for detecting the collisions between the whole body of the robots and representing them as collision areas on the m ...Daha fazlası

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On-Line Collision Avoidance of Two Comman-Based Industrial Robotics Arms Using Advanced Collision Map

AFAGHANI, Ahmad Yasser

This paper presents the development of a new stepclimbing mechanism for heavy load carriers. According to the method of measurement used, the results of experiments are given as the values of resistance and required driving force against a 10 mm step. The basic design of the proposed mechanism is illustrated, and a prototype is manufactured. Measuring impact acceleration using the prototype, we verify the accuracy of the mechanism CAE analysis. In addition, using the mechanism CAE analysis, we reveal the relationship between the angle, link length, and performance. Several experiments demonstr ...Daha fazlası

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Unsupervised Satellite Change Detection Using Particle Swarm Optimisation in Spherical Coordinates

UŞAKLI, Ali Bülent | YAVARIABDI, Amir | KUSETOĞULLARI, Hüseyin

This paper proposes a new unsupervised satellite change de- tection method, which is invariant to shadow and shading e ects. To achieve this, rstly, the RGB satellite images are transformed into spher- ical colour space to remove illumination artifacts. Then, a new unsuper- vised change detection is used. The resultant optimal binary change mask is obtained by minimisation a mean square error based cost function us- ing Binary Particle Swarm Optimisation (BPSO). The proposed method is compared with three other satellite change detection methods and the results demonstrate that our method provi ...Daha fazlası

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Evolutionary Multiobjective Multiple Description Wavelet Based Image Coding in the Presence of Mixed Noise in Images

YAVARIABDI, Amir | KUSETOĞULLARI, Hüseyin

In this paper, a novel method for generation of multiple description (MD) wavelet based image coding is proposed by using Multi-Objective Evolutionary Algorithms (MOEAs). Complexity of the multimedia transmission problem has been increased for MD coders if an input image is affected by any type of noise. In this case, it is necessary to solve two different problems which are designing the optimal side quantizers and estimating optimal parameters of the denoising filter. Existing MD coding (MDC) generation methods are capable of solving only one problem which is to design side quantizers from t ...Daha fazlası

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ARDIS: a Swedish historical handwritten digit dataset

CHEDDAD, Abbas | GRAHN, Håkan | HALL, Johan | KUSETOĞULLARI, Hüseyin | YAVARIABDI, Amir

This paper introduces a new image-based handwritten historical digit dataset named Arkiv Digital Sweden (ARDIS). The images in ARDIS dataset are extracted from 15,000 Swedish church records which were written by different priests with various handwriting styles in the nineteenth and twentieth centuries. The constructed dataset consists of three single-digit datasets and one-digit string dataset. The digit string dataset includes 10,000 samples in red–green–blue color space, whereas the other datasets contain 7600 single-digit images in different color spaces. An extensive analysis of machine l ...Daha fazlası

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