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Win, Htay Htay
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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.
Finite Element Analysis of Spur Gear Set in Noodles-making Machine Using Different Materials and Face Widths Thin, Po Po; Win, Htay Htay; Soe, Aung Kyaw; Latt, Aung Ko
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.v13i2.3929

Abstract

This paper focuses on the design and structural analysis of a spur gear set for a noodles-making machine by changing three different materials (ASTM A 536, ASTM A 220, and AISI 1020) and gear face widths. Gear corrosion occurs at contact points as a result of bending stress and contact stress. This is the major source of the gear failure of the noodles-making machine. Pitch diameters of 50mm and modules of 5mm spur gears are selected in the design of the roller gear set. In theoretical analysis, the AGMA contact stress equation was used based on the Hertzian theory. The minimum von Mises stress and effective strain are found on AISI 1020 carbon steel by using ANSYS 17.0 software. In this paper, von Mises stress and effective strain are analyzed by changing the face widths of spur gear set to 8mm, 10mm, 12mm, 14 mm, and 16mm and using finite element analysis (FEA). Although all face widths are safe for this design, 12mm is chosen in this paper due to power consumption and strength points of view.
Fabrication and Performance Evaluation of Rice Polishing Machine Win, Thida; Win, Htay Htay; Latt, Aung Ko
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.v13i4.4347

Abstract

This paper focuses on the fabrication and performance evaluation of rice polishing machine. The motor power of the machine is 1.5 hp and rotational speed is 1440 rpm. This motor uses v-belt transmission system to drive the main shaft and blower shaft. The number of two belts are used in this transmission system. The diameter of the main shaft is 22mm. ASME code equation is used to design the main shaft for rice polishing machine. Square key is used and shear and torsional strength of the key are 58.5404MPa. Single-row deep groove ball bearing is selected for left and right bearing of main shaft. The average milling efficiency, broken efficiency and milling capacity and moisture contents for existing and modified blade were compared. The average milling capacity is 35.23 kg/h, 38.41 kg/h and 41.76 kg/h with modified blade and 30.35 kg/h, 32.20 kg/h and 34.03 kg/h with existing blade at the moisture condition of 13%, 12% and 11%, respectively. As comparison results, the modified blade of the machine has more efficient and convenience than the existing blade of the machine.
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 Latt, Aung Ko Soe, Aung Kyaw Swe, War War Min Thin, Po Po Win, Thida