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All Journal The Indonesian Journal of Computer Science
Swe, War War Min
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Computer Science & IT Electrical & Electronics Engineering Engineering

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Developing a Gantry Robot with Pre-calculated pure S-curve Motion Profiles for Delicate Egg Handling: Utilizing ESP32, FreeRTOS, and AS5600 Encoders Ju Ju Naing; Swe, War War Min; Win, Htay Htay
The Indonesian Journal of Computer Science Vol. 13 No. 2 (2024): The Indonesian Journal of Computer Science (IJCS)
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v13i2.3869

Abstract

The poultry industry faces challenges due to egg breakage during transfer. This paper describes a gantry robot specifically designed for delicate egg handling. The robot utilizes pre-calculated pure S-curve motion profiles to achieve smooth and precise movements, minimizing stress on the eggs. This approach leverages the computational efficiency of pre-calculation, making it suitable for low-power microcontrollers like the ESP32. FreeRTOS(Free Real-Time Operating System) ensures real-time task management for profile execution and data collection every 4 milliseconds from the AS5600 encoders. These encoders provide high-resolution angular position feedback, allowing for comparison with the planned S-curve profile after each movement step. This system offers advantages such as reduced egg breakage, improved transfer efficiency, and a simpler design compared to real-time control. However, limitations include limited adaptability to significant environmental changes and disturbances. Future work may investigate incorporating real-time feedback control for enhanced robustness.
Numerical Analysis of Flow Velocity and Performance Test of Cross-Flow Turbine (500 W) Kyaw, Sandar; Swe, War War Min; Soe, Aung Kyaw; Latt, Aung Ko
The Indonesian Journal of Computer Science Vol. 13 No. 3 (2024): The Indonesian Journal of Computer Science (IJCS)
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v13i3.4175

Abstract

The purpose of this study is to analyze the flow velocity and assess the performance of a cross-flow turbine through numerical simulations and performance tests. Using computational fluid dynamics (CFD), the flow patterns and velocity distributions around the turbine blades to gain insights into the turbine's hydrodynamic behavior. In the experimental phase, constructed a prototype of the cross-flow turbine and tested it in a water flume, measuring key performance metrics such as power output and efficiency.The test were performed under design flow condition. The numerical results were validated with performance tests. The numerical analysis revealed critical areas of flow separation and turbulence, which were consistent with the observed experimental data.
Experimental Investigation of Heat Transfer in Automotive Radiator Using CuO Nanofluids Myo, Aye Aye; Latt, Aung Ko; Swe, War War Min; Soe, Aung Kyaw
The Indonesian Journal of Computer Science Vol. 13 No. 4 (2024): The Indonesian Journal of Computer Science (IJCS)
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v13i4.4188

Abstract

This paper focuses on the thermal analysis of an automotive radiator within the content of an engine cooling system. The cooling system plays a crucial role in regulating the temperature of a car’s engine. One of the essential components of the car’s cooling system is the cooling fluid. An efficient cooling system is vital in preventing engine overheating and ensuring the vehicle operates at its optimal performance level. A range of different approaches can be utilized to enhance heat transfer performance. To enhance heat transfer in radiator design, increasing the number of fins is a common approach, but this method has limitations, and current technology has already maximized its effectiveness. Nanofluid has been identified as a potential candidate for the automobile sector. Compared to water and water-ethylene glycol mixtures, the heat transfer coefficient of the nanofluid is significantly higher. This thesis investigates the performance of copper oxide nanofluids when mixed with a base fluid. In this study, the outlet temperature of copper oxide nanofluid is compared with ethylene glycol coolant in an automobile radiator. The nanofluid is tested at five different volume concentrations ranging from 0.1to0.5%.
Contact Stress Analysis of Spur Gears and Performance Evaluation in Oat flake Rolling Machine Ko Ko, Chit; Win, Htay Htay; Swe, War War Min; Soe, Aung Kyaw
The Indonesian Journal of Computer Science Vol. 13 No. 4 (2024): The Indonesian Journal of Computer Science (IJCS)
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v13i4.4375

Abstract

        This paper focuses on examining the structural integrity of spur gears within an oat flaking machine. This machine functions by compressing oat grains situated between a pair of horizontally aligned rollers. These rollers, set to revolve at a speed of 400 rpm and a gap of 0.45 mm, process the grains into flakes. The rotation of the rollers is facilitated by spur gears, which are propelled by a belt drive connected to an electric motor. Following a fractional rotation, the processed oats are ejected as flakes. The power transmission between gears occurs through the interaction of meshing teeth. The contact stress on the spur gear is determined using Hertz's theory, and the analysis of contact stress across two meshing spur gear teeth is executed with varying number of gear teeth via ANSYS software. The findings are delineated, and the results from finite element analysis simulations are juxtaposed with theoretical calculations. The theoretical values for effective stress and strain in contact stress analysis are 60.75 MPa and 0.51309×10⁻⁴, respectively, while simulation values are 61.78 MPa and 6.1846×10⁻⁴. Theoretical and simulation results are nearly the same. Therefore, the design is safe for oat flake rolling machine. The machine's performance was tested with 0.45 mm and 0.6 mm flakes over three days. For 0.45 mm flakes, the average capacity was 28.99 kg/hr with 99.46% efficiency, while for 0.6 mm flakes, it was 48.14 kg/hr with 99.73% efficiency. These results confirm that the machine operates reliably and efficiently at both settings.
Co-Authors Ju Ju Naing Ko Ko, Chit Kyaw, Sandar Latt, Aung Ko Myo, Aye Aye Soe, Aung Kyaw Win, Htay Htay