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All Journal J@TI (TEKNIK INDUSTRI) Jurnal Simetris Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Jurnal Simantec REKAYASA Semesta Teknika Jurnal Teknik Mesin Journal of Robotics and Control (JRC) International Journal of Science, Engineering and Information Technology Jurnal Polimesin
Hairil Budiarto
Program Studi Mekatronika, Fakultas Teknik, Umiversitas Trunojoyo Madura
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Journal : Jurnal Polimesin

 1 
Fluid pressure optimization of a PID-controlled hydraulic jack for enhanced lifting efficiency and stability Hairil Budiarto; Ibnu Irawan; Achmad Imam Sudianto; Ahmad Sahru Romadhon
Jurnal Polimesin Vol 23, No 3 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i3.6650

Abstract

Hydraulic and mechanical jacks are widely used for lifting applications but face limitations in efficiency and load handling. Despite being powerful, hydraulic jacks are prone to pressure loss and fluid leakage under static load, while mechanical systems lack automation and practicality. This research presents a hybrid hydraulic jack system integrating a DC motor-driven screw actuator and proportional–integral–derivative (PID) control for adaptive fluid pressure regulation. The purpose of this research is to develop an automatic hydraulic jack that integrates mechanical and hydraulic systems to improve the efficiency of load lifting time and reduce the risk of fluid leakage due to prolonged static pressure. The system was tested under three different loads: 90 kg, 110 kg, and 130 kg, with corresponding pressure setpoints of 170, 195, and 223 psi. Using the Ziegler–Nichols tuning method, the PID controller achieved high accuracy with error deviations of 1.1 psi, 0.1 psi, and 1.5 psi, respectively. These results represent a 95–99% precision rate in pressure regulation, compared to uncontrolled systems. The findings demonstrate the ability of the system to maintain pressure stability under varying load conditions, therefore reducing the risk of leakage and mechanical fatigue. This PID-based jack offers a cost-effective and efficient alternative to conventional power-pack hydraulic systems, particularly in mobile or resource-constrained applications.
Performance evaluation of a steam-assisted incinerator using used oil fuels for diaper waste treatment under natural convection Irawan, Ibnu; Budiarto, Hairil; Mubarok, Khamdi; Amandha, Yaumil Nurchoir
Jurnal Polimesin Vol 23, No 3 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i3.6932

Abstract

Incinerators offer an effective solution for waste processing by maintaining high combustion temperatures in a well-insulated and enclosed chamber. The combustion process using an incinerator has the ability to convert waste into steam gas and ash that can be utilized. The advantage of the incineration process is its ability to reduce the volume of waste significantly, with a reduction rate of more than 65%.  In this research, a water steam stove was fuelled by liquid waste namely used motor oil and used cooking oil. It was tested for its performance in burning diaper waste under natural convection. The stove used has a height of 370 cm, a nozzle diameter of 2 cm, and a water vapor flow rate of 0.75 kg/hour. This study aimed to evaluate the thermal efficiency of the incinerator and analyze the influence of natural convection, fuel type, and the number of air holes on combustion performance. Experimental results showed that using eight air holes produced optimal results. Combustion with used motor oil reached the highest temperature of 397°C, burned for 65 minutes, and left 0.68 kg of ash residue. In comparison, used cooking oil reached 381°C, burned for 89 minutes, and left 0.95 kg of ash. The difference in fuel boiling points and viscosity significantly affected combustion efficiency. The highest thermal efficiency was 87% when using used motor oil, compared to 35% for used cooking oil. These findings suggest that used motor oil is a more effective and efficient fuel for diaper waste incineration in naturally ventilated systems.
Co-Authors Achmad Kusairi Samlawi Ahmad Sahru Romadhon Amandha, Yaumil Nurchoir Dafid, Ach Doni Abdul Fatah Dyah Ayu Sulistyo Rini Faikul Umam Fatanur Baity Tsulutsya Ibnu Irawan Ibnu Irawan Miftahul Choiro Mubarok, Khamdi R Daksena Abdi Putera Rachmad Hidayat Rachmad Hidayat Rifky Maulana Yusron Rohmat Khaironi Rullie Annisa Sri Wahyuni Sudianto, Achmad Imam Sukri, Hanifudin Triwidyaningrum, Vivi