1,720,958 research outputs found
A STABILIZE ANGLE POSITION OF ARM ROBOT
Full text linkIn modern industrial, there are many object of control system with use for driving special tools and materials transportation is arm robot system. Basically the operation of arm robot system is position control. DC motor is one of the most powerful machines it can be used for tracking the movement of an arm robot. But the problem is how to make a stable condition of the angle position of the arm robot. The answer is Position Control Design. So in this research I did to solve the problem. The control position of the arm robot system consists of DC motor, encoder and other devices. Analyzing the system we applied state feed back for stabilize inverter pendulum. "The Position of Arm Robot" contrel system is realized under digital signal processing controlling DC motor. That applied that system
SIMULASI SISTEM KONTROL POSISI DENGAN MIKROKONTROLLER AT90S8535 SEBAGAI PENGGERAK KOLEKTOR ENERGI SURYA
Full text linkPenggerak kolektor energi surya adalah sebuah sistem yang akan mengarahkan kolektor surya kearah yang memiliki intensitas cahaya matahari terbesar di berbagai tempat. Pada penelitian sebelumnya[1] telah dirancang sebuah penggerak
kolektor energi surya dengan menggunakan Personal Computer (PC) sebagai pengontrol. Penggunaan PC sebagai pengontrol penggerak kolektor energi surya tidak portabel karena konstruksi fisik PC yang besar. Disamping itu, banyaknya fungsi yang dijalankan sebuah PC akan memperlambat proses pengontrolan penggerak kolektor energi surya. Penggunaan mikrokontroler sebagai pengontrol dapat mengatasi semua masalah tersebut. Sebuah mikrokontroler dengan ukuran fisiknya lebih kecil dari PC dapat digunakan sebagai pengontrol energi surya tanpa banyak menjalankan fungsifungsi lainnya yang membuat pengontrolan akan lebih cepat dengan keakuratan yang sama dengan PC.
Dengan menggunakan cahaya lampu pijar sebagai sumber cahaya, maka dalam penelitian ini telah dirancang sebuah simulasi penggerak kolektor energi surya dengan menggunakan mikrokontroler AT90S8535
THE APPLICATION OF STATE FEED BACK CONTROL SYSTEM FOR STABILIZE INVERTER PENDULUM
Full text linkActually, inverter pendulum position is unstable. It is possible to find equilibrium condition but there is unstable. Under position control system it is feasible to find a stable condition. So we can overcome the unstable problem. Even though the system was getting any disturbances but under stability control the system look for its equilibrium. The control position also consists of DC motor and other devices. Analyzing the system we applied state feed back for stabilize inverter pendulum. The concept of this system can be developing for unstable object like a rocket position. Many unstable The Control System of this “Inverter Pendulum” is realized under digital signal processing controlling DC motor
A STABILIZE ANGLE POSITION OF ARM ROBOT
Full text linkIn modern industrial, there are many object of control system with use for driving special tools and materials transportation is arm robot system. Basically the operation of arm robot system is position control. DC motor is one of the most powerful machines it can be used for tracking the movement of an arm robot. But the problem is how to make a stable condition of the angle position of the arm robot. The answer is Position Control Design. So in this research I did to solve the problem. The control position of the arm robot system consists of DC motor, encoder and other devices. Analyzing the system we applied state feed back for stabilize inverter pendulum. "The Position of Arm Robot" contrel system is realized under digital signal processing controlling DC motor. That applied that system
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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