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All Journal Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Journal of Robotics and Control (JRC) Jurnal Instrumentasi
Rustandi, Dadang
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Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Chemistry Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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COMPARISONS BETWEEN MEASUREMENT AND CALCULATION METHODS IN OBTAINING VIRTUAL WATER FOR HOME MADE YOGURT Wijonarko, Sensus; Sirenden, Bernadus; Maftukhah, Tatik; Rustandi, Dadang
Instrumentasi Vol 43, No 2 (2019)
Publisher : LIPI Press, Anggota IKAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31153/instrumentasi.v43i2.173

Abstract

The aim of this study was to get shadow water result comparisons for home industry yogurt using practical and theoretical methods. The embodied water obtained from the empirical technique was 20.2 liters, namely 3.8 liters lower than the mathematical technique. The differences of the embedded water between two methods were caused especially on one side the producer did not optimize the water potential to absorb the heat, but on the other side the producer did not pay any attention to the regulation in disposing the waste water that should not be higher than its threshold level. The consumption of exogenous water could be decreased if the cooling water was recycled, water heat was dissipated using natural air, and the unused milk was consumed by cattle.
A Performance Evaluation of Repetitive and Iterative Learning Algorithms for Periodic Tracking Control of Functional Electrical Stimulation System Kurniawan, Edi; Pratiwi, Enggar B.; Adinanta, Hendra; Suryadi, Suryadi; Prakosa, Jalu A.; Purwowibowo, Purwowibowo; Wijonarko, Sensus; Maftukhah, Tatik; Rustandi, Dadang; Mahmudi, Mahmudi
Journal of Robotics and Control (JRC) Vol 5, No 1 (2024)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jrc.v5i1.20705

Abstract

Functional electrical stimulation (FES) is a medical device that delivers electrical pulses to the muscle, allowing patients with spinal cord injuries to perform activities such as walking, cycling, and grasping. It is critical for the FES to generate stimuli with the appropriate controller so that the desired movements can be precisely tracked. By considering the repetitive nature of the movements, the learning-based control algorithms are utilized for regulating the FES. Iterative learning control (ILC) and repetitive control (RC) are two learning algorithms that can be used to accomplish accurate repetitive motions. This study investigates a variety of ILC and RC designs with distinct learning functions; this constitutes our contribution to the field. The FES model of ankle angle, which is in a class of discrete-time linear systems is considered in this study. Two learning functions, i.e., proportional, and zero-phase learning functions, are simulated for the second-order FES model running at a sampling time of 0.1 s. The results indicate the superior performance of the ILC and RC in terms of convergence rate using the zero-phase learning function. ILC and RC with a zero-phase learning function can reach a zero root-mean-square error in two iterations if the model of the plant is correct. This is faster than proportional-based ILC and RC, which takes about 40 iterations. This indicates that the zero-phase learning function requires two iterations to ensure that the patient's ankle angle precisely tracks the intended trajectory. However, the tracking performance is degraded for both control methods, especially when the model is subject to uncertainties. This specific problem can lead to future research directions.
MAINTENANCE OF THE TUNE UP SYSTEM ON TOYOTA 4K SERIES CARS IN TEGAL Rustandi, Dadang; Kasum, Kasum; Nugraha, Yoga
Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Vol. 7 No. 4 (2023): DESEMBER
Publisher : LPPM Univ. Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/abdidos.v7i4.2608

Abstract

Tune-up is conditioning the car engine so that it returns to normal after being used for daily needs. Tune-up is not a repair but rather maintenance of the car engine, so that the car is always in top condition, in other words it will not break down when used for daily needs. To produce maximum tune-up work, of course you have to follow the correct procedures and during a tune-up, not all components are checked, this depends on the kilometers the engine has traveled, and the length of time that has passed since the last time it was serviced or the condition of the engine itself. Based on the research questions above, the objectives of this research include: To find out how to maintain or tune up a Toyota Kijang 4K series engine, to find out what components must be considered when performing a tune up on a Toyota Kijang 4K series engine.
Co-Authors Adinanta, Hendra Edi Kurniawan Kasum, Kasum Maftukhah, Tatik Mahmudi Mahmudi Nugraha, Yoga Prakosa, Jalu A. Pratiwi, Enggar B. Purwowibowo Purwowibowo, Purwowibowo Sirenden, Bernadus Suryadi Suryadi Wijonarko, Sensus Wijonarko, Sensus