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All Journal METAL : Jurnal Sistem Mekanik dan Termal Media Elektrik
Muh. Abdillah
Politeknik Negeri Ujung Pandang
Automotive Engineering Computer Science & IT Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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AUTOMATIC CONTROL SYSTEM: AUTOMATIC WHEELCHAIR WITH INTUITIF SENSOR ELECTRONIC WHEEL DRIVE WITH ELECTROMYOGRAM DETECTION AND NAVIGATION ST. Khaeratul Mukarramah; Ariani Amri; Muh. Abdillah
Jurnal Media Elektrik Vol. 22 No. 1 (2024): MEDIA ELEKTRIK
Publisher : Jurusan Pendidikan Teknik Elektro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59562/metrik.v22i1.5986

Abstract

This research aims to address the needs of individuals with tetraplegia, with the expectation that it can contribute to the development of automatic control systems and provide insights for the fields of healthcare and education. The control system in the wheelchair reads muscle contractions via electrodes attached to the muscles. These electrodes serve as muscle sensors. The muscle sensor data, often referred to as EMG, is 10-bit. The EMG sensor in the wheelchair shows that the wheelchair's movement is detected as moving forward when the data value generated by the EMG sensor reaches the minimum threshold of 589. The wheelchair moves forward when the Y-axis value is positive and moves backward when the Y-axis value is negative. The wheelchair will turn right or left when the X-axis value is positive or negative, respectively. Thus, when the X value is 20 and the Y value is 20, the wheelchair will move forward and turn right. The data collected by the IMU sensor can be wirelessly transmitted to an IoT (Internet of Things)-based system. This data can then be monitored through a browser on a laptop or PC, as well as through a smartphone.
Analysis of Computational Fluid Dynamics on 3D Printing Propeller Design using Thermoplastic Material Nurhidayanti; Muhammad Ikhsan; Muh. Abdillah
METAL: Jurnal Sistem Mekanik dan Termal Vol. 9 No. 2 (2025): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.9.2.122-129.2025

Abstract

The propeller is essential in generating thrust for various applications, from UAVS to ship propulsion and industrial ventilation. Propeller performance is greatly influenced by the characteristics of the fluid flow generated by the interaction between the propeller blades and the surrounding medium. 3D printing technology offers design flexibility and cost efficiency in propeller manufacturing. This study aims to analyse the effect of rotational speed variations on the performance of 3d printed propeller designs made of PLA. Simulation of Computational Fluid Dynamics (CFD) was used to evaluate the fluid flow velocity distribution, flow pattern, and flow type transition around the propeller. The results showed that the variation of rotational speed affects the fluid flow type, with low rotational speed producing laminar flow and high rotational speed producing transitional flow. This understanding is important for the optimisation of PLA 3D printing propeller design in improving efficiency and reducing noise.
Development of Control System for TU-2A CNC Machine Ariawan Bayu Wicaksono; Lewi; Muh. Abdillah; Nurhidayanti; Ishak
METAL: Jurnal Sistem Mekanik dan Termal Vol. 10 No. 1 (2026): METAL : Jurnal Sistem Mekanik dan Termal
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.10.1.43-54.2026

Abstract

This study aims to design and develop an electronic control system for the TU-2A CNC machine to improve its performance, simplify the programming process, and facilitate machine maintenance and repair procedures. The method used is retrofitting the EMCO TU-2A CNC machine by replacing the old electronic components with more modern and affordable components, without compromising the machine's precision. Calibration is carried out to ensure the accuracy of the machine's movement, while machine testing is conducted by machining workpieces made of teflon (PTFE) and aluminum. The results of the study indicate that after the development and maintenance, the CNC TU-2A machine showed improvements in precision and ease of use. The machine's error remains within the tolerance limit, approximately 0.01 to 0.02 mm, indicating that the calibration was successful. The conclusion of this study is that the development of the new electronic control system has made the CNC TU-2A machine more efficient and easier to maintain, making it more suitable for use in vocational education.
Co-Authors Ariani Amri Ariawan Bayu Wicaksono Ishak Lewi Muhammad Ikhsan Nurhidayanti ST. Khaeratul Mukarramah