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Pengaplikasian Pengolah Data Pengukuran Kebulatan (Roundness) Pada Alat Ukur (Roundness Tester Machine) Di Laboratorium Pengukuran Teknik Mesin Universitas Riau Eko Jadmiko; Dodi Sofyan Arief; Adhy Prayitno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Measuring clock or dial is a comparison device usually used in industrial activities, especially in production. To make measurements at this time must be supported by technology that can facilitate operators when using it and when analyzing measurement results. Involving the programme and microcontroller are a solution to developing in roundness measurement, and then the results can be more accurate or thorough between the readable values read from the measuring instrument with the actual value of varying the amount of data. Roundness application is a program that can input measurement data automatically and can do calculations directly. Then, it can display a reference circle, a table that calculates the values of X, Y, R, X’, Y’, R’, Roundness Deviation, Run out Concentricity or a shift in the center point and also the center point shift or Theta. In measuring roundness, the test object is used the Standard Mandrel which has been certified by PT. Global Quality Indonesia, by determining three points or positions, namely in the first position the amount of data is 180, in the second position the amount of data is 90 and in the third position the amount of data is 60 with a rotating speed of 15 mm/s. The results of the reference circle can be seen in each calculation in each position, in the second position the roundness deviation values are approaching of the Mandrel. Key word : Roundness application, position, measurement, data variation

Studi Kecermatan Alat Ukur Kebulatan (Roundness Tester Mechine) Produksi Laboratorium Pengukuran Universitas Riau Indro Parma; Adhy Prayitno; Dodi Sofyan Arief
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Accuracy is the closeness or the accuracy of the measurement results with the actual value. Accuracy can also mean a measure of the closeness results of the analysis of the actual invitation analyte levels. Accuracy is vital that must be fulfilled and owned by any measurement tool, use the measuring instrument that has high accuracy and good will produce accurate measurement data and other wise use measuring devices are not accurate, do not meet the standards of the results obtained will not be accurate. This study aims to determine the value of the mandrel roundness deviation, roundness accuracy Measuring Equipment (Roundness Tester Machine) and large deviations in the roundness measuring instrument (Roundness TesterMachine) (instrument error) and the operator or gauges (human error). From the results, the large stroundness deviation value for minimum circumscribed circle is 0,474 mm, maximum inscribed circle 0,417 mm, minimum zone circle 0,495 mm, least squares circle 0,207 mm, for the value of sphericity (roundness) for the smallest outer for minimum circumscribed circleis 0,003 mm, maximum inscribed circle 0,003 mm, minimum zone circle is 0,003 mm, least squares is 0,001 mm. Value accuracy roundness measuring instrument (Roundness TesterMachine) in position 1 = 0,006 mm, position 2 = 0,006 mm, position 3 = 0,011 mm, position 4 = 0,018 mm, position 5 = 0,003 mm, position 6 = 0,018 mm, position 7 = 0,021 mm, position 8 = 0,031 mm, position 9 = 0,002 mm, position 10 = 0,001 mm and error measuring instrument (instrument error) is the largest 0,02944 mm or 18,871% and the smallest deviation is 0,00029 mm or 0,225%. Operator error or measuring (Human Error) for first test (human) 22%, second test 5,33%, third test 182%, fourth test 187%, fifth test 58%.Keywords: Accuracy, Deviation, Human error, Roundness Tester Machine.

Pengujian Panel Surya Dinamik Dan Statik Dengan Melakukan Perbandingan Daya Output Wahyu Fajaryanto; Adhy Prayitno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Some consideration in generating electrical energy is to produce big enough energy, economical cost andnot have negative impact to environment. In this test has been made mechanical system that can move solarpanel to the sun and Know the comparison of solar panel power output between solar panels Dynamics andstatic solar panels. The dynamic solar panel output power and static solar panels are both increasing in timefollowing the position of the sun. Optimum power of solar panels occur at midmorning until the beginning of thesun slip.From the test results found that the highest level of voltage levels are at 11:30 to 12:30. This is becausethe sun is just above the daily sunshineKeywords : solar panel, solar panel dynamic,solar panel static

Rancang Bangun Sistem Kontrol Mesin CNC Milling 3 Axis Menggunakan Close Loop System Ikhlash Syukran Harrizal; Syafri Syafri; Adhy Prayitno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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A multi axis of CNC machine needs a circuit control systems that function as the engine's brain. The purpose of this research is to design and developing a circuit control of the CNC milling machine with 3 axis movement. All machining parameters would be setup and operated through the control system so that the machine can operate in accordance with the design in three axes. In the design of the control system used 3 stepper motors as a driver, where each was enabled to move the engine against the x, y, and z axis. There are several steps that must be done in this design, such as the selection of control element data. Furthermore, control elements consisting of Breakout Board, Motor Driver, Stepper Motor, Power Supply, Limit Switch, and Emergency Stop are assembled according to schematic control design. The control system was connected to the PC through the Mach3 software interface to be used to drive the actuator. Prior to use for machining processes, the control system needs to be calibrated so that the machine's sliding dimension matches the command dimensions of the PC. Control system on CNC machines designed using a close loop system where there was a Limit Switch as a feedback sensor to the engine, so what if there was a mistake (error) on the track machine, then the sensor would command the spindle back to home position.Key Words : CNC, Control System, Elements of Control, Mach3, Close Loop

Perancangan Dan Pembuatan Struktur Rangka Dinamik Sun Tracking Muhamad Rifan; Adhy Prayitno; Syafri Syafri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Riau is an area located on the equator, meaning that this region has the potential to be traversed by the sun throughout the year. This solar potential is an alternative to the use of energy derived from fossil energy. In general, solar cells are not optimal in the absorption of sunlight. Therefore, in this study designed a Sun Tracking engine that is destined for solar cell follow the movement of the sun. Stages of design consists of needs analysis, preparation of product technical specifications, designing product concepts to generate alternative product concepts which then selected the concept to be made. From the selection of concept is made the static analysis on the mechanical components of the Sun Tracking machine, which includes stress and deformation due to loading and own weight. The static analysis is done in two ways that is by manual calculation and finite element analysis using Autodesk Inventor 2012 Student Edition software. Based on the result of static analysis , revealed stress of 8.381 MPa on stem 1, 8.769 MPa on stem 2, 0.5378 MPa at stem 3 and 0.562 MPa on stem 4. Deformation happened is 0.026830 mm in stem 1 , 0.028073 mm on the stem 2, 0.0006277 mm on the trunk 3 and 0.0005041 mm on the trunk 4Keywords : Sun Tracking, Autodesk Inventor, Solar cell

Pembuatan Sistem Kendali Pelacak Surya Otomatis Pada PLTS Harry Rudi Saragih; Yogie Rinaldy G; Adhy Prayitno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Solar Electricity Generation (SEG) is an environmental freiandly technology takes advantage from phototovoltaic which is capable of converting solar energy to electricity energy. The Potensial of promoting SEG in Indonesia is very promizing in view of Indonesia's geographical location on the equator.The SEG with an automatic solar tracking system consist of LDR Sensor,Ardunio Uno, Servo Motor, Stepper Motor.Work operating procedur of the automatic solar tracking on SEG is begun from LDR sensor detection to solar position. Based upon LDR, data,Arduino (microcontroller)actived stepper motor to drive the photovoltaic panels to be always perpendicullar to the solar radiation during the operation. A such SEG system is considered able to give optimum energy output since the photovoltaic gets maximum radiant energy from the sun.The use of an automatic solar position control system on solar panels can increase panel performance and increase electrical power with an average output reaching almost 75% more than static solar panels.Keywords : SEG,Photovoltaic,Solar panels

Sun Tracking Otomatis Untuk Pembangkit Listrik Tenaga Surya (PLTS) Sigit Nurharsanto; Adhy Prayitno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Electricity has been used by industry, offices, as well as for the general public and individuals that is greatly improved in demand source of theelectricity can be obtained from solar energy converted into electrical energy by utilizing solar panels. The solar power can be utilized as an alternative electric energy, in utilizing this solar energy is by using a photovoltaic process,which converts directly solar energy into electrical energy.An automatic sun tracking for solar power plants can be designed to meet the needs of large-scale households which people can be easity to use itstechnology, This technology can be designed using some basic instruments such as solar panels. LDR (Light Dependent Resistor), Arduino microcontroller, motor AC and Motor Drivers. Some components are assembled and programmed into a sun tracking device that is called sun tracking,In this research the sun tracking used an automatic motion which following the direction of sunlight using arduino uno brain. The sunlight on LDR sensor and direct motor driver gave the command ‘’On’’ to a DC motor that would move the solar panel to always perpendicular to the arrival of sunlight. Therefore, the solar panels with automatic suntracking system in this research is obtained a control system that can work maximally in the process of controlling and revealed the maximum current.Keywords : Microcontroller, LDR, DC Motor, Solar Panel,Photovoltaics

Pengujian Kebulatan Hasil Pembuatan Poros Aluminium Menggunakan Emco T.U CNC - 2A Smkn 2 Pekanbaru Dengan Roundness Tester Machine Erizal Hamdi; Dodi Sofyan Arief; Adhy Prayitno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Lathing process is one of the main processes in the manufacturing industry. In the process of turning a product at TU EMCO CNC machine -2a SMKN2 Pekanbaru possible deviations from predetermined geometric characteristics. Aluminium is a light metal having corrosion resistance and good electrical conductivity. In the process of making a product (workpiece) is meticulous, the deviation of the shape, position, place, and rotate deviation to wardsan element geometry (point, line, surface or intermediate area), should be clearly limited to the value of a certain tolerance. Tolerance limits the form of deviation, position and place on aswivel deviation geometric element is referred to as geometric tolerances. Roundness and diameter are the two different geometric character, though interrelated, the lack roundness will affect the measurement results diameter, other wise the measurement of the diameter is not always going to show lack non roundness. From the results, the value of the roundness deviation of each variation of the feeding speed on the machine for the Minimum circumscribed circle feeding speed difference deviation 20 is between 0,011mm to 0,115 mm. feeding speed 40 is between 0.023 mm to 0.063 mm.feeding speed 70 is between 0.040 mm to 0.144 mm. On the Maximum incribed circle speed difference deviation 20 is between 0,007 mm to 0,100 mm. feeding speed 40 is between 0.025 mm to 0.059 mm. feeding speed 70 is between 0.010 mm to 0.108. In the Minimum zone circle feeding speed difference deviation 20 is between 0.011 to 0.109 mm. feeding speed 40 is between 0,024 mm to 0,076 mm. feeding speed 70 is between 0.044 mm to 0.092 mm. At Least Squares Circle feeding speed difference deviation 20 is between 0.008 to 0.029, feeding speed 40 is between 0.005 mm to 0.053 mm. 70 feeding speed is between 0,021mm to 0,047 mm.Roundness deviation value and average Least squares circle every variation of feeding speed, then at a feeding speed of 20 near-perfect roundness deviation value after deducting the correction factor Roundness Tester Machine tools, namely between -0.017 mm to 0,023 mm and the average value of 0.0037 mm.Keywords: feeding speed, Deviation, Roundness Tester Machine.

Pengembangan Kontroler Pada Excavator Komatsu Pc130f-7 Untuk Fungsi Engine Cut Off Imron Masykuri; Adhy Prayitno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Controller is one component of the regulatory system that functions to process the feedback signal and the reference input signal or error signal becomes a control signal. The purpose of this study is to design a simple controller as a form of controller development on the Komatsu PC130F-7 Excavator for engine cut-off functions if there are errors or abnormal engine oil levels and pressures. Komatsu PC130F-7 Excavator is a heavy equipment with the highest population in the area of plantations and industrial plantations, especially in Riau and surrounding areas. The controller created is the development of an existing controller on the Machine by adding the engine cut-off feature if there are abnormal oil levels and pressures, and also as an alternative solution to the current problems, that is for safety and preventing more serious damage to the engine. The oil level sensor will be active if the oil level is below the low on the H-L (high-low) measuring stick, and the oil pressure sensor will read if the oil pressure is below 0.49 kPa (0.5 kg / cm²). This design has two inputs, that is a voltage of ± 15 volts on the path of the engine oil level sensor and oil pressure sensor. This voltage is used as an input that activates the relay work to respond to lower engine speed from 1880 rpm to 950 rpm, and continued by the timer work as a time lag regulator to cut off the electricity on the starting engine line so that the engine will automatically stop turning and shut down..Keywords : Controller PC130F-7, Oil Level Sensor, Oil Pressure Sensor, Relay Timer

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