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All Journal TEKNIK Mechatronics, Electrical Power, and Vehicular Technology

Sanjaya, Kadek Heri

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Author-ID : 1347773

Electrical & Electronics Engineering Engineering

Published : 6 Documents Claim Missing Document

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Simulation of lumbar and neck angle flexion while ingress of paratransit (angkot) in Indonesia as a preliminary design study Syaâ€™bana, Yukhi Mustaqim Kusuma; Sanjaya, Kadek Heri; Kurnia, Muhammad Redho; Shippen, James
Journal of Mechatronics, Electrical Power and Vehicular Technology Vol 8, No 2 (2017)
Publisher : Research Centre for Electrical Power and Mechatronics, Indonesian Istitutes of Sciences

This is the preliminary finding of a study to simulate lumbar and neck flexion while ingress to the paratransit. The result of simulation will determine design aspect criteria as a preliminary step before ideation and implementation design steps. Biomechanics of Bodies (BoB) is software that used to represent passenger task during paratransit ingress simulation, with skeleton model that used is height 165 cm and weight 65 kg. Environment to represent this simulation is measured Suzuki Carry SS 2013 as a private car that has been modified into a public transportation in accordance with the Indonesian government road-worthy test. Due to the low height of the entrance and the high ground clearance, lumbar and neck joint angle was a focus of this ingress simulation. The peak angle at the neck joint is 40Â° when 2 s skeleton nod in the door limitation ingress and lumbar flexion is 70Â° when 5 s skeleton is walking while bend over that will increase the load on that area. Based on biomechanical simulation approach, we may suggest the dimension of public transportation design framework developments, especially paratransit.

Review on the application of physiological and biomechanical measurement methods in driving fatigue detection Sanjaya, Kadek Heri; Lee, Soomin; Katsuura, Tetsuo
Journal of Mechatronics, Electrical Power and Vehicular Technology Vol 7, No 1 (2016)
Publisher : Research Centre for Electrical Power and Mechatronics, Indonesian Istitutes of Sciences

Previous studies have identified driving fatigue as the main cause of road traffic accidents, therefore, the aim of this literature review is to explore the characteristics of driving fatigue both physically and mentally as well as to explore the technology available to measure the process of fatigue physiologically. We performed e-searching in the field of fatigue detection methods through keywords tracking. The instruments studied have their own strength and weakness, and some are intrusive while the others are non-intrusive. The accuracy and stability of measurements are also varied between those instruments. In order to create more reliable fatigue detection methods, it is necessary to involve more instruments with an inter-disciplinary approach. Our intention is to make this study as a stepping stone for a more comprehensive in-vehicle real-time man-machine interaction study. Such study will not only be useful to prevent traffic accidents but also to bridge man and machine communication in the vehicle control along with developing newer technology in the field of vehicle automation.

Preliminary investigation of sleep-related driving fatigue experiment in Indonesia Sanjaya, Kadek Heri; Kusuma Sya'Bana, Yukhi Mustaqim; Hutchinson, Shaun; Diels, Cyriel
Journal of Mechatronics, Electrical Power and Vehicular Technology Vol 9, No 1 (2018)
Publisher : Research Centre for Electrical Power and Mechatronics, Indonesian Istitutes of Sciences

Sleep-related driving fatigue has been recognised as one main cause of traffic accidents. In Indonesia, experiment-based driving fatigue study is still very limited, therefore it is necessary to develop laboratory-based experiment procedure for sleep-related fatigue study. In this preliminary study, we performed a literature review to find references for the procedure and three pilot experiments to test the instruments and procedure to be used in measuring driving fatigue. Three subjects participated, both from experienced and inexperienced drivers. Our pilot experiments were performed on a driving simulator using OpenDS software with brake and lane change test reaction time measurement. We measured sleepiness by using Karolinska Sleepiness Scale (KSS) Questionnaire. The conditions of the experiment were based on illumination intensity as well as pre- and post-lunch session. We found that lane change reaction time is more potential than brake reaction time to measure driving performance as shown by the more fluctuating data. Post-lunch seems to induce drowsiness greater than illumination intensity. KSS questionnaire seems non-linear with driving performance data. We need to test further these speculations in the future studies involving a sufficient number of subjects. We also need to compare the effect of circadian rhythm and sleep deprivation on driving fatigue. The use of eye closure and physiological measurement in further study will enable us to measure driving fatigue more objectively. Considering the limitations, more preliminary experiments are required to be performed before conducting the main experiment of driving fatigue.

Three axis deviation analysis of CNC milling machine Subagio, Dalmasius Ganjar; Subekti, Ridwan Arief; Saputra, Hendri Maja; Rajani, Ahmad; Sanjaya, Kadek Heri
Journal of Mechatronics, Electrical Power and Vehicular Technology Vol 10, No 2 (2019)
Publisher : Research Centre for Electrical Power and Mechatronics, Indonesian Istitutes of Sciences

The manufacturing technology has developed rapidly, especially those intended to improve the precision. Consequently, increasing precision requires greater technical capabilities in the field of measurement. A prototype of a 3-axis CNC milling machine has been designed and developed in the Research Centre for Electrical Power and Mechatronics, Indonesian Institute of Sciences (RCEPM-LIPI). The CNC milling machine is driven by a 0.4 kW servo motor with a spindle rotation of 12,000 rpm. This study aims to measure the precision of the CNC milling machine by carrying out the measurement process. It is expected that the CNC milling machine will be able toperform in an optimum precision during the manufacturing process. Accuracy level testing is done by measuring the deviations on the three axes namely X-axis, Y-axis, and Z-axis, as well as the flatness using a dial indicator and parallel plates. The measurement results show the deviation on the X-axis by 0.033 mm, the Y-axis by 0.102 mm, the Z-axis by 0.063 mm, and the flatness of the table by 0.096 mm, respectively. It is confirmed that the deviation value is within the tolerance standard limits set by ISO 2768 standard. However, the calibration is required for this CNC milling machine to achieve more accurate precision. Furthermore, the design improvement of CNC milling machine and the application of information technology in accordance with Industry 4.0 concept will enhance the precision and realibility.

Study of Machining Strategies for CNC Milling of Foot Prosthetic Using Taguchi Methodology Lestari, Wahyu Dwi; Adyono, Ndaru; Faizin, Ahmad Khairul; Sanjaya, Kadek Heri
TEKNIK Vol. 44, No. 3 (2023): December 2023
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v44i3.57885

The use of CNC milling machines in the industrial sector greatly contributes to the production of high-quality products that align with consumers' desired shapes. Currently, the precise machining parameters for manufacturing a product are determined through a time-consuming and costly process of trial and error. Most prior significant studies have examined the variables that can impact the duration of machining time. However, different machining conditions require different control factors. The key objective of this study is to enhance the machining parameters and identify the crucial factors that influence the duration of machining in the production of foot prostheses. The experiment was conducted using a 3-axis CNC milling machine with five machine parameters: spindle speed, feed rate, step over, depth of cut, and toolpath strategy. The Taguchi method with orthogonal array L2735 was chosen as an optimization method. The optimum machine parameters are analyzed using signal-to-noise (S/N) ratio and ANOVA. The analysis shows that spindle speed is the most influential variable on machine time. The next factor is the depth of cut, feed rate, and toolpath strategy, and the last is step over.

Ergonomic analysis of gaming mouse using electromyography and subjective assessment Zafs, Rizqie Anandita; Riyadi, Slamet; Sanjaya, Kadek Heri; Sya’Bana, Yukhi Mustaqim Kusuma; Dewi, Nugrahaning Sani; Tajalli, Muqorob; Yusuf, Sharfiden Hassen
Journal of Mechatronics, Electrical Power, and Vehicular Technology Vol 15, No 2 (2024)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/j.mev.2024.1110

First Person Shooter (FPS) gamers usually use mice intensively, which may lead to musculoskeletal disorders. The objective of this study is to investigate the effect of the three most popular gaming mice designs on arm muscle activity and subjective perception to find the most optimum design. Subjects who participated in this study were ten healthy young adult males (age 18-24 years) selected from FPS gamers. The mice were tested when the subjects played the FPS Valorant game. The activity of forearm muscles, namely flexor carpi radialis (FCR) and palmaris longus (PL), was measured using electromyography (EMG). One-way analysis of variance (ANOVA) was used to compare the muscular activities when using the three mice. This study also measured the subjective perception of the participants. The study reveals that the high activation of muscles confirms the risk of Carpal Tunnel Syndrome (CTS). However, the difference in muscular activities between the three mice was found to be insignificant. On the other hand, the qualitative analysis suggests that the third mouse showed the evenest distribution of muscular activity both at low cycle and high cycle performance. Further study using psychophysiological methods is necessary to measure subjective preferences.

Co-Authors Dalmasius Ganjar Subagio Diels, Cyriel Faizin, Ahmad Khairul Hendri Maja Saputra Hutchinson, Shaun Katsuura, Tetsuo Kurnia, Muhammad Redho Kusuma Sya'Bana, Yukhi Mustaqim Lee, Soomin Ndaru Adyono, Ndaru Nugrahaning Sani Dewi, Nugrahaning Sani Rajani, Ahmad Ridwan Arief Subekti Shippen, James Slamet Riyadi Syaâ€™bana, Yukhi Mustaqim Kusuma Sya’Bana, Yukhi Mustaqim Kusuma Tajalli, Muqorob Wahyu Dwi Lestari Yusuf, Sharfiden Hassen Zafs, Rizqie Anandita

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