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All Journal Jurnal Teknologi JURNAL CITRA WIDYA EDUKASI Journal of Applied Sciences and Advanced Technology SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan)
Ahmad Mahfud
Politeknik Kelapa Sawit Citra Widya Edukasi
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Rancangan Identifikasi Sistem dan Struktur Pengendali Berbasis Jaringan Syaraf Tiruan pada Pressure Process Rig (Feedback 38-714) Ahmad Mahfud
JURNAL CITRA WIDYA EDUKASI Vol 3 No 2 (2011): JCWE Edisi Nopember 2011
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

Sampai dengan saat ini telah banyak dikembangkan sejumlah sistem pengendalian yang didasarkan pada konsep kendali linier maupun nonlinear. Salah satu metode sistem kendali tersebut adalah sistem kontrol yang didasarkan pada model kendali balik (Inverse System). Metode ini sangat bergantung pada kemampuan untuk menciptakan model sistem balik. Jaringan syaraf tiruan salah satu metode kendali yang dapat memodelkan berbagai sistem kendali non linear termasuk sistem kendali baliknya yang akan dibahas dalam tulisan ini. Kemampuan Jaringan Syaraf Tiruan dalam hal nonlinearitas, adaptif dan mampu memetakan input dan output menjadi latar belakang penerapan prinsip JST sebagai pengendali peralatan uji laboratorium Pressure Process Rig. Teknik kendali balik Jaringan syaraf tiruan akan diterapkan sebagai pengendali melalui model pembalik pada sebuah plant/proses dengan metode Backpropagation. Untuk pelatihan/training di JST, sistem data input-outputnya digenerasikan dengan uji tanggapan loop terbuka pada plant yang sesungguhnya, yang mana data tersebut dibagi menjadi dua, 25% data diterapkan untuk pelatihan dan 75% data lainnya digunakan untuk validasi (pengujian). Model akhir yang akan dituju adalah dalam bentuk inverse model JST, yang didasarkan pada sistem kendali JST. Kemampuan sistem kendali JST selanjutnya dibandingkan dengan hasil pengendalian sebelumnya yang telah dilakukan dengan metode PID.
Rancang Bangun Realtime Sounding pada Storage Tank Simulator Berbasis Mikrokontroler AVR ATMEGA 8535 Ahmad Mahfud
JURNAL CITRA WIDYA EDUKASI Vol 11 No 1 (2019): JCWE Edisi April 2019
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

This research discusses the design of a sounding system that measures the liquid content in a simulation tank, which is a model of a palm oil storage tank. With a heating treatment by the heater to effect temperature changes and the installation of a solenoide valve to give effect to changes in fluid height. The use of ultrasonic sensors (HC-SR04) can be used to test the height level of empty space with a level of accuracy of 1 cm. The use of a temperature sensor (DS18B20) can be effectively used to measure temperature with a small dipped method in liquid. ATMEGA 8538 AVR microcontroller, is able to communicate well with applications built on the Borland Delphi platform, so as to provide comfort and convenience for users to monitor and read the performance of tank contents, both from the level, temperature, density, and tank contents in the form of number and graphic.
Rancangan Sistem Pengukuran Spesific Gravity secara Real Time Berbasis Arduino Uno pada Larutan Calsium Carbonate di Claybath Ahmad Mahfud
JURNAL CITRA WIDYA EDUKASI Vol 12 No 1 (2020): JCWE Edisi April 2020
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

This research is a real-time measurement system design by utilizing an ultrasonic sensor that is connected to the Arduino Uno microcontroller. Testing is done by testing the performance of claybath miniature, which will separate the kernel and shell material using a suspension of calcium carbonate. Data obtained from sensor that have been previously calibrated will be analyzed, ie by comparing reference data obtained from measurement manually using a hydrometer. The result showed that the ultrasonic sensor and Arduino Uno microcontroller can be used as a specific gravity reading sensor that works in real time. The accuracy of sensor reading is 99.4% in the measurement range 1,010 - 1,120 kg/liter, with an average difference of 0.006 kg/liter.
Efektivitas Nilai Specific Gravity Larutan Kalsium Karbonat (CaCo3) untuk Meminimalisir Losses Claybath Ahmad Mahfud
JURNAL CITRA WIDYA EDUKASI Vol 12 No 2 (2020): JCWE Edisi Agustus 2020
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

Research aims to understand large percentage kernels losses claybath, conform to established standards of pks rhs and the effectiveness of value specific gravity solution of calcium carbonate (CaCO3) as the process of separation kernels and shell .Research carried out by analyzing capacity bait in and analysis kernels losses after checking value specific gravity.The study was carried out with the methods study literature, deksriptif analysis and the reckoning analysis the quality of the nucleus palm . Methods used in data collection adhering to a standard operating procedures the sample collection output claybath and capacity bait claybath. Sample is taken directly, were analysed with the methods analysis core palm oil. Based on an analysis done, drawn conclusion solution CaCO3 having a level saturation, if bait entering claybath large, so solution CaCO3 will quickly saturated caused by oil contained in kernels, The effectiveness of value sg in solution claybath found in SG 1.16 with the kernel losses 1.97 % to sample or 0.02 % to FFB and kernel dirt content 6.91 %.
Sistem Kendali Otomatis Pengendalian serta Pemantauan Level Volume dan Suhu Kerja Digester Berbasis Internet of Things Ahmad Mahfud; Singgih Wirapratama
JURNAL CITRA WIDYA EDUKASI Vol 13 No 1 (2021): JCWE Edisi April 2021
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

This research discusses the application of an automatic control system for controlling and monitoring the volume level and working temperature of the Digester based on the Internet of Things. The digester machine is a machine that still uses a manual system for controlling and monitoring the volume level and working temperature. This research was conducted through the literature study stage, observing the monitoring system and controlling the volume level and working temperature of the digester machine directly in the field, designing the control system, testing and analyzing as a whole on how the control system works on a miniature digester machine. The result showed that: 1) the control system for controlling and monitoring the volume level and working temperature of the digester can work stably and continuously; 2) the measurement result by the sensor have an error rate of 1.747% for the controller sensor and 1.520% for the monitoring sensor; 3) data on the result of monitoring the volume level and working temperature have been integrated with the internet through the Ubidots IoT platform; 4) data can be monitored remotely using a smartphone via the Ubidots Explorer application; and 5) the design and construction of the equipment greatly influences the work of the control system, because the machine (digester), as an application medium, must be able to support the work of the control system later.
Prototype Sistem Kontrol Otomatis pada Sterilizer Berbasis Arduino UNO R3 Ahmad Mahfud
JURNAL CITRA WIDYA EDUKASI Vol. 14 No. 1 (2022): JCWE Edisi April 2022
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

A sterilizer is a pressurized steam vessel used to boil oil palm fruit. The effective boiling process greatly determines the quality of the boiled fruit, as well as the effectiveness of extracting oil from the fruit flesh. Setting the stages of opening and closing the inlet valve, exhaust valve and condensate valve, greatly affects the quality of the product. The formation of the triple peak pattern needed to get the best results is formed from the operational settings of the three valves through 9 steps with a very short time duration. The manual operation of the sterilizer clearly has a less effective impact on the performance of the sterilizer. The Sterilizer prototype was designed in the context of researching the Arduino UNO application to support an automatic control system for 3 valve units (inlet, exhaust and condensate) so that they can operate following predetermined cycles and stages. As well as the convenience of monitoring the rate of change of air pressure in the cooking tube, through the LCD monitor device. The results showed that the use of Arduino UNO as a controller in controlling the performance of the Inlet Valve, Exhaust Valve and Condensate Valve could be done well. Monitor display that displays the rate of change of pressure based on the embedded pressure sensor, can be monitored properly. The maximum pressure applied to the protorype tube sterilizer is 1.4 bar. With an interval of 1 boiling cycle for 87 seconds.
PROTOTYPE SISTEM PENIMBANGAN OTOMATIS PADA MODEL KERNEL BULK BERBASIS ARDUINO UNO Ahmad Mahfud; Muhammad Ali Kahfi Nasution
Jurnal Teknologi Vol 15, No 1 (2023): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.15.1.43-50

Abstract

Kernel Bulk is a temporary shelter for kernels produced at the Palm Oil Mill, before sending process to buyers. The problem is, it is not known exactly how many production kernels have been produced and collected in Kernel Bulk. Daily kernel stock measurements are usually carried out in the Kernel Storage. which can only be done the next day when the factory has stopped processing. The Automatic Weighing System Prototype is designed to provide convenience in monitoring kernel production results at any time. It is hoped that the system will be able to provide measurement data quickly and in real time. By using the Kernel Bulk model as used in the factory, as well as the use of several sensors and controllers as system controllers. In this study, four Loadcells were used as Kernel weight measuring sensors, as well as the HX711 Module signal amplifier to send measurement data to the microcontroller. Arduino Uno R3 is embedded in this prototype as a controller that functions to read sensor measurement results and provide instructions for the next stage of measurement. The Liquid Crystal Display is embedded in the panel box, to make it easier to read the measured weight. The results showed that the automatic weight measurement system worked well, with a bulk capacity of 4.7 kg, a volume of 0.008 m3, a bulk load mass of 4.7 kg, a leg strength of 70 MPa, and an electromotor with a voltage of 220 VAC, 0.2A with a rotating output of 10 RPM. The level of accuracy of mass measurement is 93.9817%.
Prototype Automatisasi Oil Skimmer Pengontrolan Suhu dan Drainase Nos pada CST Berbasis Microcontroler Arduino Uno Miftakhul Khoirudin; Ahmad Mahfud; Azhar Basyir Rantawi
SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan) Vol 1 (2019)
Publisher : SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan)

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Abstract

Tangki CST memiliki pengeluaran berupa oil dan non oil solid (NOS). Pada tangki ini dilakukan pengontrolan suhu 90 0C.  Pada pengeluaran oil dilakukan pengutipan secara manual, yaitu dengan cara memutar oil skimmer jika minyak sudah mencapai level yang sudah ditentukan. Proses pendektisian minyak juga dilakukan secara manual. Pengukuran pada ketebalan minyak sendiri dilakukan dengan memasukkan selang bening ke tangki dan mengamatinya secara visual. Hal ini dapat mempengaruhi efesiensi pengutipan minyak pada CST. Oleh karena itu pengutipan minyak harus maksimal untuk memperoleh hasil yang diinginkan. Pengontrolan suhu 90 0C pada CST sangat penting dilakukan, karena apabila suhu diatas 90 0C maka minyak akan berubah warnanya menjadi kehitaman dan apabila suhu dibawah 90 0C maka proses pemisahan minyak dengan kotoran tidak sempurna. Maka pengontrolan suhu 90 0C harus dilakukan untuk memudahkan pemisahan minyak dengan kotoran. Pengeluaran non oil solid (NOS) pada CST dilakukan secara manual, yaitu dengan cara membuka valve (drainase) setiap pagi hari sebelum proses dilakukan. Proses drainase harus dilakukan karena apabila tidak dilakukannya maka kotoran pada bagian bawah CST akan menumpuk dan berkerak. Selain itu ada pengaruh terhadap pengutipan, yaitu oil akan kotor karena waktu untuk sedimentasi pada CST akan berkurang disebabkan oleh tumpukan kotoran. Automatisasi Oil Skimmer, Pengontrolan Suhu dan Drainase NOS pada CST bertujuan untuk memepermudah karyawan saat pengutipan minyak, pengontrolan suhu dan drainase NOS tidak manual lagi melainkan dilakukan secara otomatis.  Rancangan automatisasi menggunakan sumber tegangan 220 Volt dan 5 Volt. Tegangan 220 Volt digunakan untuk menggerakkan strirrer dan solenoid valve. Tegangan 5 Volt digunakan untuk pengoperasian Arduino Uno. Untuk membaca ketebalan minyak dan pengoperasian skimmer digunakan dua sensor jarak HCSR-04 yang berfungsi untuk membaca level cairan didalam CST dan pelampung. Dalam pengontrolan suhu digunakan sensor Thermo Couple MAX6675 untuk membaca suhu dalam CST. Sedangkan proses drainase NOS digunakan alat solenoid valve yang berfungsi untuk pengedrainan secara otomatis. Berdasarkan perancangan automatisasi Oil Skimmer, Pengontrolan Suhu dan Drainase NOS dapat disimpulkan bahwa rancangan ini dapat dilakukan dengan otomatis dengan bantuan microcontroler Arduino Uno. Perancangan ini dapat membantu operator saat pengutipan minyak, pengontrolan suhu dan drainase NOS dengan cara otomatis.
Co-Authors Azhar Basyir Rantawi Azhar Basyir Rantawi Istianto Budhi Rahardja Istianto Budhi Rahardja Miftakhul Khoirudin Muhammad Ali Kahfi Nasution Muhammad Malik Arifandi Prabu Diga Bawana Singgih Wirapratama St. Nugroho Kristono Yudi Dermawan