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Sinergi FT
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Articles 217 Documents
EFFECTS OF THE TEMPERATURE ON THE OUTPUT VOLTAGE OF MONO-CRYSTALLINE AND POLY-CRYSTALLINE SOLAR PANELS Eteruddin, Hamzah; Atmam, Atmam; Setiawan, David; Arief, Yanuar Z.
SINERGI Vol 24, No 1 (2020)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2020.1.010

Abstract

People can make solar energy alternative energy by employing solar panels to generate electricity. The utilization of solar energy on a solar panel to generate electricity is affected by the weather and the duration of the radiation, and they will affect the solar panel?s temperature. There are various types of solar panels that can be found on the market today, including Mono-Crystalline and Poly-Crystalline. The difference in the material used needs to be observed in terms of temperature changes in the solar module. Our study?s findings showed that a change in the temperature would impact the solar panel?s output voltage, and the solar panel?s output voltage would change when it was connected to the load although the measured temperatures were almost the same.
PRINCIPLES OF SUSTAINABLE ARCHITECTURE IN THE PRODUCTION OF BAMBOO WOVEN WALL MATERIALS (DENDROCALAMUS ASPER) Umar, Muhammad Zakaria; Arsyad, Muhammad; Santi, Santi; Faslih, Arman
SINERGI Vol 24, No 1 (2020)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2020.1.008

Abstract

Bamboo is a sustainable building material because the use of new materials is sustainable. In the City of Kendari, there are still craftsmen of bamboo woven wall material. This research is important to do because to reveal how to make bamboo woven wall material by local craftsmen in Kendari and to find out the pattern of making bamboo woven wall material against the principles of sustainable architecture. This research is aimed at identifying and reviewing work tools, work materials, and how to make bamboo woven wall material against the principles of sustainable architecture by local craftsmen in Kendari City. This study uses a case study method with a qualitative approach. This study concluded that the principles of sustainable architecture in bamboo woven wall materials are as follows: working tools are used simply to reduce the use of new materials, the materials for making come from vegetation grown so that the location and natural resource ecosystems are sustainable, and how to make use of human energy so that it saves energy.  
A MAPAEKF-SLAM ALGORITHM WITH RECURSIVE MEAN AND COVARIANCE OF PROCESS AND MEASUREMENT NOISE STATISTIC Suwoyo, Heru; Tian, Yingzhong; Wang, Wenbin; Hossain, Md Musabbir; Li, Long
SINERGI Vol 24, No 1 (2020)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2020.1.006

Abstract

The most popular filtering method used for solving a Simultaneous Localization and Mapping is the Extended Kalman Filter. Essentially, it requires prior stochastic knowledge both the process and measurement noise statistic. In order to avoid this requirement, these noise statistics have been defined at the beginning and kept to be fixed for the whole process. Indeed, it will satisfy the desired robustness in the case of simulation. Oppositely, due to the continuous uncertainty affected by the dynamic system under time integration, this manner is strongly not recommended. The reason is, improperly defined noise will not only degrade the filter performance but also might lead the filter to divergence condition. For this reason, there has been a strong manner well-termed as an adaptive-based strategy that commonly used to equip the classical filter for having an ability to approximate the noise statistic. Of course, by knowing the closely responsive noise statistic, the robustness and accuracy of an EKF can increase. However, most of the existed Adaptive-EKF only considered that the process and measurement noise statistic are characteristically zero-mean and responsive covariances. Accordingly, the robustness of EKF can still be enhanced. This paper presents a proposed method named as a MAPAEKF-SLAM algorithm used for solving the SLAM problem of a mobile robot, Turtlebot2. Sequentially, a classical EKF was estimated using Maximum a Posteriori. However, due to the existence of unobserved value, EKF was also smoothed one time based on the fixed-interval smoothing method. This smoothing step aims to keep-up the derivation process under MAP creation. Realistically, this proposed method was simulated and compared to the conventional one. Finally, it has been showing better accuracy in terms of Root Mean Square Error (RMSE) of both Estimated Map Coordinate (EMC) and Estimated Path Coordinate (EPC).       
HUMIDITY EFFECT TO 5G PERFORMANCES UNDER PALEMBANG CHANNEL MODEL AT 28 GHZ Alfaresi, Bengawan; Nawawi, Zainudin; Malik, Reza Firsandaya; Anwar, Khoirul; Nur, Levy Olivia
SINERGI Vol 24, No 1 (2020)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2020.1.007

Abstract

The telecommunication has a tremendous improvement in terms of data rates and bandwidth requiring sufficient frequency allocation and wideband spectrum availability. The millimeter-wave frequency band is one of the solution to these requirements, however communications in this band is facing new challenges on the climate effect to the channel propagation  In this paper, we propose a 5G channel model considering the effect of humidity based on the characteristic of the natural environment of Palembang city. The channel model is represented by power levels and delay called a Power Delay Profile (PDP and is derived based on a series of computer simulations using parameters of nature in Palembang. The 5G channel model is important to further derive the outage performance to be used as the theoretical performance of 5G in Palembang since the the Shannon Channel Capacity Theorem is involved in the derivation. We conduct a series of computer simulations to evaluate the validity of the proposed channel model and its characteristics. We found that humidity affect to the performances, where high humidity makes the performances of outage and BER slightly worse, although the effect may be ignored for some applications. The results of this paper are expected to be the references for the development and implementation of 5G Networks especially at the mm-Wave band in Palembang.  
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Sinergi FT 2013
Publisher : Sinergi FT

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Abstract

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THE EFFECT OF POLYSILAZANE ON THE DENSIFICATION AND MECHANICAL PROPERTIES OF SICF/SIC COMPOSITES Noviyanto, Alfian
SINERGI Vol 24, No 1 (2020)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2020.1.002

Abstract

The effect of polysilazane on the densification and mechanical properties of SiCf/SiC composites was examined thoroughly. The polysilazane was infiltrated into the fiber area, followed by pyrolysis at 1450°C for 4 h in an argon atmosphere. Furthermore, the SiC fabrics contain the pyrolyzed polysilazane was infiltrated by ?-SiC slurry and sintered at 1750°C for 2 h in an argon atmosphere. The density of SiCf/SiC composites with and without the addition of polysilazane was 2.65 and 3.05 g/cm3, respectively. The pores in the fiber area were observed for the SiCf/SiC composites with the addition of polysilazane. However, the fine-grained size in the matrix area was obtained by the addition of polysilazane. The average grain size of the SiCf/SiC composite with and without the addition of polysilazane was 253 and 740 nm, respectively. Indeed, the hardness of the matrix area for SiCf/SiC composites with the addition of polysilazane (31.6 ± 1.8 GPa) was higher compared to SiCf/SiC composites without polysilazane (27.4 ± 1.6 GPa).
ANALISA PERENCANAAN JARINGAN 4G LTE PADA GEDUNG A FAKULTAS TEKNIK UNIVERSITAS JEMBER MENGGUNAKAN RADIOWAVE PROPAGATION SIMULATOR 5.4 Oktauliah, Farah; Setiabudi, Dodi; Supeno, Bambang
SINERGI Vol 21, No 1 (2017)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2017.1.004

Abstract

Kondisi gedung yang memiliki banyak ruangan juga terdapat banyak redaman yang mengakibatkan pelemahan sinyal sehingga diperlukan adanya perencanaan jaringan nirkabel. Tulisan ini membahas perencanaan jaringan 4G LTE pada Gedung A Fakultas Teknik Universitas Jember yang kemudian disimulasikan oleh perangkat lunak Radiowave Propagation Simulator (RPS) 5.4 dengan variasi pengambilan data berupa jenis antena dan letak ketinggian Femtocell Access Point (FAP). Perencanaan jaringan 4G LTE menggunakan metode propagasi indoor COST 231 Multi Wall diperoleh jumlah FAP yang dibutuhkan pada Lantai 1 sebesar 2 FAP, Lantai 2 sebesar 4 FAP, dan Lantai 3 sebesar 4 FAP. Analisa cakupan yang efektif pada perencanaan jaringan 4G LTE indoor diperoleh saat FAP menggunakan jenis isotropic antenna dan letak ketinggian FAP 2 meter dari permukaan lantai seperti pada Lantai 1 saat ketinggian FAP 2 meter dan menggunakan dipole antenna diperoleh mean level daya sebesar -88,04 dBm dan isotropic antenna diperoleh mean level daya sebesar -87,89 dBm, sedangkan saat FAP 3,5 meter menggunakan dipole antenna diperoleh mean level daya sebesar -88,89 dBm dan isotropic antenna diperoleh mean level daya sebesar -88,33 dBm. Perencanaan jaringan 4G LTE menggunakan RPS 5.4 dan metode COST 231 Multi Wall dapat diterapkan pada Gedung A Fakultas Teknik Universitas Jember.
ANALISIS KEGAGALAN PROSES INSULASI PADA PRODUKSI AUTOMOTIVE WIRES (AW) DENGAN METODE FAILURE MODE AND EFFECT ANALYSIS (FMEA) PADA PT JLC Hasbullah, Hasbullah; Kholil, Muhammad; Santoso, Dwi Aji
SINERGI Vol 21, No 3 (2017)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2017.3.006

Abstract

FMEA (Failure Mode Effect Analysis)  adalah metode yang digunakan dalam mengidentifikasi kemungkinan  kegagalan  pada proses, fungsi  dan design produk  sehingga diketahui penyebab dan  akibatnya  untuk meningkatkan mutu dan reliabilitas produk. Kegagalan proses insulasi pada proses produksi AW (Automotive Wire) mengganggu kinerja produksi PT JLC.  FMEA  digunakan untuk mengidentifikasi dan mencegah potensi kegagalan proses insulasi pada produksi produk AW (Automotive Wire) di PT JLC . FMEA diulas oleh banyak riset sebagai metode efektif dan dijadikan format standar yang digunakan oleh industri otomotif dalam membuat daftar potensi kegagalan sehingga dapat mengetahui penyebab, dampak dan tindakan pencegahan dalam mengatasinya. FMEA menyediakan metode dalam membuat daftar potensi kegagalan produk AW (Automotive Ware) melalui penilaian kuantitatif dengan kriteria  tiga aspek yaitu Tingkat kemungkinan frekwensi terjadi kegagalan (O=Occurence), Tingkat resiko akibat kegagalan (S=Severity) dan Tingkat kemungkinan bisa dideteksi (D=Detection). Dari hasil perhitungan dan analisis FMEA maka dihasilkan daftar urutan prioritas potensi kegagalan  proses insulasi melalui perhitungan pada tiga aspek Occurence (O), Severity (S) dan Detection (D) disertai kemungkinan penyebab, dampak dan solusinya. Dua potensi kegagalan terbesar adalah Ketidaksesuaian warna (terlau tua atau muda), marking tidak tercetak jelas dan permukaan insulasi yang kasar. FMEA  mampu mengidentifikasi penyebab, dampak dan  pencegahan untuk mengantisipasi kegagalan tersebut.
PENGENDALIAN KOMPRESOR DAN STEAM REFORMER PADA PERANCANGAN PABRIK BIOHIDROGEN DARI BIOMASSA DENGAN PENGENDALI PI Wahid, Abdul; Iqbal, Muhammad
SINERGI Vol 20, No 2 (2016)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2016.2.001

Abstract

Proses pada pabrik biohidrogen dari biomassa terbagi menjadi beberapa unit proses, yaitu unit pengolahan awal bahan baku, unit gasifikasi, unit char combustor, unit kompresi, unit H2S Removal, unit steam reforming, unit water gas shift, dan unit pressure swing adsorber. Pada penelitian ini akan dijelaskan pengendalian pada kompresor dan steam reformer. Kedua unit tersebut penting dikendalikan agar mencapai tekanan yang diinginkan pada masukan H2S Removal dan untuk mendapatkan gas hidrogen pada unit Steam Reformer. Pengendali yang digunakan adalah pengendali PI karena hampir dapat menangani setiap situasi pengendalian proses. Untuk mendapatkan kinerja yang optimum, dilakukan penyetelan pengendali dengan metode Ziegler Nichols, Lopez, dan Default Unisim, kemudian membandingkan nilai IAE dan ISE dari ketiga jenis penyetelan tersebut. Hasilnya pengendalian tekanan dan suhu yang optimum adalah dengan metode penyetelan pengendali Ziegler Nichols. Sedangkan pengendalian surge-01, surge-02, surge-03 pada kompresor metode yang paling optimum adalah Default Unisim, dan untuk surge-04 adalah metode Lopez.
SISTEM MULTI-ROBOT DENNGAN NXT MINDSTORMS ROBOT MENGGUNAKAN BLUETOOTH Adriansyah, Andi
SINERGI Vol 17, No 3 (2013)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Teknologi dan aplikasi robot terus berkembang secara cepat. Pada dekade ini, telah terjadi pergeseran yang signifikan pada bidang fokus penyelidikan tentang robot dimana para peneliti mulai mengarahkan arah penelitiannya, dari investigasi sistem robot tunggal kepada koordinasi sistem multi-robot. Hal ini dikarenakan sistem multi-robot memiliki beberapa kentungan. Dalam konteks sistem multi-robot, komunikasi sistem multi-robot menjadi bagian yang signifikan. Penelitian ini mengimplementasikan komunikasi pada sistem multi-robot menggunakan teknologi Bluetooth. Sistem multi robot NXT Mindstorms telah dirancang.  Robot ini dilengkapi oleh dengan sistem komunikasi berbasis Bluetooth.  Beberapa pergerakan telah diujikan. Dapat dikatakan bahwa robot NXT Mindstorms hasil rancangan mampu melakukan pergerakan dasar, yaitu: pergeralan lurus, belok kanan dan belok kiri. Pengujian performansi sistem multi robot dirancang dalam bentuk dua buah formasi, yaitu: berurutan dan berdampingan.

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