THE PRELIMINARY RESEARCH FOR IMPLEMENTATION OF IMPROVED DTC SCHEME OF HIGH PERFORMANCE PMSM DRIVES BASED ON FPGA

The direct torque control (DTC) is one of control approache that is used commonly in PMSM control system. This method supports a very quick and precise torque response. However, the DTC method is not perfect and has some disadvantages. Many researchers have been proposed to modify the basic DTC scheme for PMSM drive. All this contributions allow performance to be improved, but at the same time they lead to more complex schemes. Furthermore, the PMSM drive control systems are usually based on microcontroller and DSP. Some researchers also have been used DSP and FPGA together to develop DTC for AC drives. These allow improving the performance, but they will increase cost. For the reason above, this paper proposed a new DTC scheme to apply only based on FPGA. The preliminary research showed that the proposed DTC sheme can reduce torque and flux ripples significantly. Therefore, this paper also recomend to realize proposed DTC scheme based on FPGA in order to support to execute very fast computation.The implementation is hoped that it will very potential to replace not only the induction motor but also the DC servo motor in a number of industrial process, commercial, domestic and modern military applications of high-performance drive

Editorial: Scientific Writing Workshop on TELKOMNIKA Editors and Authors Meeting (TEAM)

In this year, TELKOMNIKA is organizing scientific writing workshop series for improving manuscript quality which is called as “Scientific Writing Workshop on TELKOMNIKA Editors and Authors Meeting (TEAM)”. This workshop is aimed at developing scientific writing skills to both editing and proofreading for preparing final manuscript. Editing covers reread manuscript which includes content, overall structure, clarity, style and citations to see whether the manuscript is well-organized and the transitions between paragraphs are smooth. Proofreading is the final stage of the editing process, focusing on surface errors such as misspellings and mistakes in grammar and punctuation. This process is just as important as any other aspect of writing. The process is instrumental in getting ideas across in an accessible and logical manner

FPGA for Robotic Applications: from Android/Humanoid Robots to Artificial Men

Researches on home robots have been increasing enormously. There has always existed a continuous research effort on problems of anthropomorphic robots which is now called humanoid robots. Currently, robotics has evolved to the point that different branches have reached a remarkable level of maturity, that neural network and fuzzy logic are the main artificial intelligence as intelligent control on the robotics. Despite all this progress, while aiming at accomplishing work-tasks originally charged only to humans, robotic science has perhaps quite naturally turned into the attempt to create artificial men. It is true that artificial men or android humanoid robots open certainly very broad prospects. This “robot” may be viewed as a personal helper, and it will be called a home-robot, or personal robot

AN OPTIMIZED SQUARE ROOT ALGORITHM FOR IMPLEMENTATION IN FPGA HARDWARE

This paper presents an optimized digit-by-digit calculation method to solve complicated square root calculation in hardware, as a proposed simple algorithm for implementation in field programmable gate array (FPGA). The main principle of proposed method is two-bit shifting and subtracting-multiplexing operations, in order to achieve a simpler implementation and faster calculation. The proposed algorithm has conducted to implement FPGA based unsigned 32-bit and 64-bit binary square root successfully. The results have shown that proposed method is most efficient of hardware resource compare to other methods. In addition, the strategy can be expanded to larger number easily

PERATURAN MENTERI PENDIDIKAN NASIONAL REPUBLIK INDONESIA NOMOR 22 TAHUN 2011 TENTANG TERBITAN BERKALA ILMIAH

Bahwa dalam rangka pelaksanaan Pasal 94 Peraturan Pemerintah Nomor 17 Tahun 2010 tentang Pengelolaan dan Penyelenggaraan Pendidikan sebagaimana telah diubah dengan Peraturan Pemerintah Nomor 66 Tahun 2010 tentang Perubahan Atas Peraturan Pemerintah Nomor 17 Tahun 2010 Tentang Pengelolaan dan Penyelenggaraan Pendidikan, perlu menetapkan Peraturan Menteri Pendidikan Nasional tentang Terbitan Berkala Ilmiah

Prediksi Harga Saham Berbasis Web Dengan Sistem Inferensi Fuzi Tsukamoto

Sistem prediksi harga saham yang akurat sangat dibutuhkan oleh para investor untuk menentukan kebijakan (pengambilan keputusan) investasi masa datang. Penelitian ini bertujuan merancang dan mengembangkan suatu sistem aplikasi prediksi harga saham berbasis web dengan sistem inferensi fuzi Tsukamoto. Masukan data untuk prediksi adalah berupa variabel permintaan, penawaran dan laju inflasi. Keluaran dari prediksi harga saham adalah nilai prediksi harga saham dalam periode tertentu berdasarkan perhitungan dengan sistem basis data fuzi. Sistem prediksi harga saham yang dirancang, diujikan untuk memprediksi harga saham Bursa Efek Jakarta (BEJ). Hasil penelitian menunjukkan bahwa sistem aplikasi prediksi harga saham berbasis web dengan inferensi Tsukamoto dapat memprediksi harga saham dengan keakuratan yang tinggi dan mempunyai level penerimaan yang baik dari broker

MATLAB/SIMULINK BASED ANALYSIS OF VOLTAGE SOURCE INVERTER WITH SPACE VECTOR MODULATION

Space vector modulation (SVM) is the best modulation technique to drive 3-phase load such as 3-phase induction motor. In this paper, the pulse width modulation strategy with SVM is analyzed in detail. The modulation strategy uses switching time calculator to calculate the timing of voltage vector applied to the three-phase balanced-load. The principle of the space vector modulation strategy is performed using Matlab/Simulink. The simulation result indicates that this algorithm is flexible and suitable to use for advance vector control. The strategy of the switching minimizes the distortion of load current as well as loss due to minimize number of commutations in the inverter