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All Journal SITEKIN: Jurnal Sains, Teknologi dan Industri Jurnal Abdimas BSI: Jurnal Pengabdian Kepada Masyarakat Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC)
Ndaru Atmi Purnami
Institut Teknologi Dirgantara Adisutjipto
Aerospace Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Other

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Penentuan Koreksi Sudut Attitude pada Quadrotor Menggunakan Algoritma Zero Acceleration Compensation Shandy Avisena; Freddy Kurniawan; Ndaru Atmi Purnami
Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC) Vol 4, No 1 (2022): February
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/avitec.v4i1.1109

Abstract

The orientation angle of a quadrotor UAV can be estimated from gyroscope and accelerometer data. Orientation can be predicted from gyroscope data under static or dynamic conditions, but the predicted value has accumulated errors. Meanwhile, orientation can also be calculated from accelerometer data, but only correct if the sensor is in a static state. To get a more precise orientation angle, the orientation predicted from the gyroscope data and the orientation calculated from the accelerometer data were fused using a Kalman filter. Determination of the condition of the sensor using a threshold value that is applied to the covariance of the acceleration data. in this study, the zero-acceleration compensation algorithm is used so that when the sensor is static, the orientation angle is calculated from the accelerometer. The use of this algorithm can increase the accuracy of the quadrotor orientation for roll angle to 96.84% and pitch angle to 98.91%.
Analisis Bifurkasi Persamaan Longitudinal pada Gerak Roket Tiga Dimensi Tipe RKX-Lapan Ndaru Atmi Purnami
Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC) Vol 3, No 2 (2021): August
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/avitec.v3i2.1060

Abstract

This article discusses about longitudinal equation for the three dimensional rocket motion of RKX-Lapan. The RKX-Lapan’s rocket is guided rocket which was designed using two phases, boosting and sustaining. The rocket has six degrees of freedom movement. The freedom movements consists of three translational motions and three rotational motions which causess unstable rocket movement. Therefore, stable rocket motion system is needed. The rocket motion system is three dimensional of nonlinear equation, thus linearization process of rocket motion equation is requaired. One of this linearization process is longitudinal motion which consists of two translational motions and one rotational motion. The equation of longitudinal motion has stabilization system analysist on sustaining phase. Bifurcation analysis of longitudinal equation for the three dimensional rocket motion of RKX-Lapan has been created in this article. It determined equilibria and its equation stability character. Furthermore, bifurcation analysist on equilibria and numerical simulation have been done to find out that bifurcation value indicated a topologically nonequivalent.
KOREKSI SUDUT ATTITUDE DAN HEADING QUADROTOR DENGAN PERUBAHAN MATRIKS KOVARIAN DERAU PENGUKURAN KALMAN FILTER Muhamad Rafiq; Freddy Kurniawan; Ndaru Atmi Purnami
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 18, No 2 (2021): Juni 2021
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v18i2.13336

Abstract

Data hasil perhitungan orientasi sensor akselerometer dan sensor giroskop memiliki kelemahan yang mana saat kondisi adanya percepatan, hasil orientasi dari sensor akselerometer memiliki derau yang cukup besar pada hasil rekaman data sensornya. Saat kondisi statis, hasil orientasi dari sensor giroskop memiliki derau yang cukup besar pada hasil rekaman data sensornya. Hasil orientasi dari gabungan sensor akselerometer, giroskop, dan magnetometer (IMU) menggunakan metode kalman filter masih memiliki galat yang cukup besar saat kondisi dinamis.Untuk mengurangi galat orientasi, ditambahkan algoritma mengubah nilai matriks kovarian derau pengukuran (R) guna memberikan bobot yang berbeda pada sensor akselerometer dan sensor giroskop. Pada saat kondisi dinamis nilai matriks kovarian derau pengukuran (R) akan diturunkan, hal ini bertujuan agar kalman filter memberikan bobot yang lebih besar pada data hasil pengukuran . Saat kondisi statis  nilai matriks derau pengukuran (R) kembali ke nilai semula. Hal ini bertujuan agar kalman filter lebih menggunakan data hasil proses prediksi . Dengan begitu kekurangan sensor akselerometer dan sensor giroskop dapat diminimalisir.Hasil penelitian ini berupa orientasi quadrotor dari penggabungan data sensor akselerometer, sensor girosko, dan sensor magnetometer menggunakan kalman filter dan perubahan nilai matriks kovarian derau pengukuran (R). Hasil orientasi pada penelitian ini akan dibandingkan dengan hasil orientasi pada HP. Hasil orientasi pada penelitian ini menghasilkan galat pada sikap roll sebesar 0%, pada sikap pitch sebesar 0,11% dan pada sikap yaw sebesar 26,39%.
Analisis Intensitas Konsumsi Energi (IKE) pada Institut Teknologi Dirgantara Adisutjipto (ITDA) Yogyakarta Ndaru Atmi Purnami; Refni Arianti; Paulus Setiawan
Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC) Vol 4, No 2 (2022): August
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/avitec.v4i2.1325

Abstract

One of the main sectors that uses the largest electrical energy in a country is the commercial sector. One of the parts of this sector is education. This sector has a sub-sector. It is called a building. Electrical energy conservation efforts are needed to streamline electrical energy consumption by looking at energy-saving opportunities. This research was conducted at Halim Building and Wiweko Building in Institut Teknologi Dirgantara Adisutjipto (ITDA), Yogyakarta. The research was conducted by taking energy audit data regarding the level of electrical energy consumption as seen from the Energy Consumption Intensity (IKE) parameter. The research method began with the data collection. Furthermore, the data were processed using Ms. Excel, SPSS, and Matlab. Statistics analysis with ANOVA was carried out to conclude what parameters affected IKE. The results showed that the IKE value of the Halim Building was 30,48 kWh/m2/year and the IKE value of the Wiweko Building was 24,16 Wh/m2/year. The IKE value was still significant in the efficient category following   ESDM & JICA Electric Power Development Co. LTD standards.
Edukasi Aplikasi UAV, Avionic dan Dunia Kerja bagi Mahasiswa dan Alumni Teknik Elektro Kedirgantaraan Lasmadi Lasmadi; Freddy Kurniawan; Bambang Sudibya; Paulus Setiawan; Ndaru Atmi Purnami; Denny Dermawan
Jurnal Abdimas BSI: Jurnal Pengabdian Kepada Masyarakat Vol 6, No 2 (2023): Agustus 2023
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Universitas Bina Sarana Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31294/jabdimas.v6i2.15169

Abstract

Praktek kerja lapangan merupakan sarana bagi mahasiswa untuk mendapatkan pengalaman kerja di industri.  Namun, dimasa pandemic Covid-19, beberapa perusahaan tidak dapat menerima mahasiswa secara langsung. Disisi lain, sebagian fresh graduate masih belum mendapatkan tempat kerja yang sesuai harapan. Pengabdian kepada masyarakat ini bertujuan memberikan edukasi tentang aplikasi UAV (unmanned aerial vehicles) di industri, Avionic dan dunia kerja kepada mahasiswa dan alumni Teknik Elektro Institut Teknologi Dirgantara Adisutjipto. Pengabdian masyarakat dilakukan dalam bentuk webinar melalui media zoom meeting dan dapat diikuti oleh masyarakat umum. Untuk mendapatkan umpan balik peserta, tim pengabdian menggunakan kuesioner yang dibagikan kepada peserta. Peserta cukup antusias untuk mengikuti kegiatan ini selama tiga hari berturut-turut dan dapat menerima materi pengetahuan yang diberikan oleh pemateri. Berdasarkan data kuesioner, kegiatan ini dapat meningkatkan pengetahuan dan wawasan peserta tentang aplikasi UAV, Avionic dan dunia kerja Teknik Elektro.
Co-Authors Bambang Sudibya Denny Dermawan Freddy Kurniawan Lasmadi Lasmadi Muhamad Rafiq Refni Arianti Setiawan, Paulus Shandy Avisena