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Desain Model Kontrol Governor Dengan Menggunakan Kontroler PID Di PLTU Firdaus, Aji Akbar
Jurnal Intake : Jurnal Penelitian Ilmu Teknik dan Terapan Vol 7 No 2 (2016): Oktober 2016
Publisher : Fakultas Teknik Universitas Darul Ulum Jombang

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Abstract

Sistem kelistrikan harus mampu menyediakan tenaga listrik untuk pelanggan dengan frekuensi yang harus konstan. Frekuensi sistem dipengaruhi oleh kebutuhan dari daya aktif pelanggan yang mengakibatkan terjadi perubahan pada frekuensi sistem. Penyediaan daya reaktif harus sesuai dengan kebutuhan untuk mempertahankan frekuensi agar tidak melebihi nominal toleransi yang diperbolehkan. Pengaturan penyediaan daya aktif dilakukan dengan mengatur besarnya kopel mekanis yang diperlukan untuk memutar generator, yakni dengan mengatur pemberian bahan bakar pada gas turbin. Governor pada tiap unit generator berfungsi sebagai pengatur utama bahan bakar pada unit pembangkit berdasarkan perubahan beban yang terjadi. Karena perubahan beban, dibutuhkan suatu kontroler yang mempunyai respon cepat dan stabil. Dalam sistem ini menggunakan kontroler PID (Proportional-Integrator-Differential). PID merupakan sebuah kontroler yang digunakan untuk mengontrol governor agar mempunyai respon cepat, dan stabil, serta frekuensi yang dihasilkan tidak melebihi batas toleransi yang ± 5 %.
Robotic Leg Design to Analysis the Human Leg Swing from Motion Capture Yunardi, Riky Tri; Firdaus, Aji Akbar; Agustin, Eva Inaiyah
Bulletin of Electrical Engineering and Informatics Vol 6, No 3: September 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (766.684 KB) | DOI: 10.11591/eei.v6i3.645

Abstract

In this paper presented the prototype of robotic leg has been designed, constructed and controlled. These prototype are designed from a geometric of human leg model with three joints moving in 2D plane. Robot has three degree of freedom using DC servo motor as a joint actuators: hip, knee and ankle. The mechanical leg constructed using aluminum alloy and acrylic material. The control movement of this system is based on motion capture data stored on a personal computer. The motions are recorded with a camera by use of a marker-based to track movement of human leg. Propose of this paper is design of robotic leg to present the analysis of motion of the human leg swing and to testing the system ability to create the movement from motion capture. The results of this study show that the design of robotic leg was capable for practical use of the human leg motion analysis. The accuracy of orientation angles of joints shows the average error on hip is 1.46º, knee is 1.66º, and ankle is 0.46º. In this research suggesting that the construction of mechanic is an important role in the stabilization of the movement sequence.
Robotic Leg Design to Analysis the Human Leg Swing from Motion Capture Yunardi, Riky Tri; Firdaus, Aji Akbar; Agustin, Eva Inaiyah
Bulletin of Electrical Engineering and Informatics Vol 6, No 3: September 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (766.684 KB) | DOI: 10.11591/eei.v6i3.645

Abstract

In this paper presented the prototype of robotic leg has been designed, constructed and controlled. These prototype are designed from a geometric of human leg model with three joints moving in 2D plane. Robot has three degree of freedom using DC servo motor as a joint actuators: hip, knee and ankle. The mechanical leg constructed using aluminum alloy and acrylic material. The control movement of this system is based on motion capture data stored on a personal computer. The motions are recorded with a camera by use of a marker-based to track movement of human leg. Propose of this paper is design of robotic leg to present the analysis of motion of the human leg swing and to testing the system ability to create the movement from motion capture. The results of this study show that the design of robotic leg was capable for practical use of the human leg motion analysis. The accuracy of orientation angles of joints shows the average error on hip is 1.46º, knee is 1.66º, and ankle is 0.46º. In this research suggesting that the construction of mechanic is an important role in the stabilization of the movement sequence.
Voice recognition system for controlling electrical appliances in smart hospital room Agustin, Eva Inaiyah; Yunardi, Riky Tri; Firdaus, Aji Akbar
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 2: April 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (576.686 KB) | DOI: 10.12928/telkomnika.v17i2.11781

Abstract

Nowadays, most hospitals have new problem that is lack of medical nurse due to the number of patient increas rapidly. The patient especially with physical disabilities are difficult to control the switch on electrical appliances in patient’s room. This research aims to develope voice recognition based home automation and being applied to patient room. A miniature of patient’s room are made to simulate this system. The patient's voice is received by the microphone and placed close to the patient to reduce the noise.V3 Voice recognition module is used to voice recognition process. Electrical bed of patient is represented by mini bed with utilising motor servo. The lighting of patient room is represented by small lamp with relay. And the help button to call the medical nurse is represented by buzzer. Arduino Uno is used to handle the controlling process. Six basic words with one syllable are used to command for this system. This system can be used after the patient's voice is recorded. This system can recognize voice commands with an accuracy 75%. The accuracy can be improved up to 85% by changing the voice command into two syllables with variations of vowels and identical intonation. Higher accuracy up to 95% can be reached by record all the subject’s voice.