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Penerapan Mesin Penyedot Debu Model Sentrifugal Untuk Usaha Kreatif Kerajinan Kulit Kerang Mutiara “Concha” Handycraft Menunjang Pariwisata Berkelanjutan Di Desa Meninting Lombok Joniarta, I Wayan; Wirawan, Made; Adi Sayoga, I Made; Yudhyadi, I Gusti Ngurah Ketut; Mirmanto, Mirmanto
Jurnal Gema Ngabdi Vol. 7 No. 1 (2025): JURNAL GEMA NGABDI
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jgn.v7i1.547

Abstract

The problem of dust pollution at the service partner "Concha Handycraft" is at the core of program activities. Controlling dust from its source is the main goal, namely replacing blower style vacuum cleaners with centrifugal type vacuum cleaners. The centrifugal type was chosen because it has a simple shape, the motor is separate from the fan, so the motor is protected from dust. The activity method begins with designing, purchasing materials, manufacturing in the workshop, testing, minor repairs, application and assistance. The results obtained are that the centifugal model vacuum cleaner that has been applied has advantages. The electrical power used from previously 260 watts to 120 watts. Working time can also increase because the motor used is a DC motor so it doesn't heat up quickly. If you use a blower model, the electric motor heats up quickly because it gets dust and needs to be cooled. The ability to suck up dust is also increased, with a fan at a 30 degree angle the ability to suck up and throw out is balanced. By using a centripugal model vacuum cleaner, 95% of the dust produced by the grinding machine can be sucked into the dust collection chamber.  Concha Handycraft partner SME owners and employees are very happy with the new machine, so they can be more productive at work, and stay protected from exposure to dust in the workplace.
The THE FERFORMANCE ANALYSIS OF ELECTRIC CAR OF THE UNIVERSITY OF MATARAM : THE FERFORMANCE ANALYSIS OF ELECTRIC CAR OF THE UNIVERSITY OF MATARAM Yudhyadi, I Gusti Ngurah Ketut; Pandiatmi, Pandri; Dyah S., Emmy; Alit, Ida Bagus; Sinarep
Energy, Materials and Product Design Vol. 4 No. 1 (2025): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/empd.v4i1.6342

Abstract

The university of Mataram car suspension and its control was designed to minimize the vibration produced by unwanted external inputs i.e., changes of road contours that reach the car passengers. This effort will provide the passenger with higher safety and comfort. In this study, a quarter car model with two degree of freedoms (2 DOF) was designed and developed its mathematical model. The effects of the road contour were studied and analyzed in term of overshoot and settling time that affect the main body, suspension as well as the passenger. The MATLAB Simulink model was programmed to mimic the behavior of the suspension and its response to the input which was the road contour (step function). This approach was very helpful to reduce the effort, time and money. The result shows that with implementation of the design parameters chose, the responses of the system (displacement and velocities) were satisfied the criteria of comfortable (there are no overshoot), however, the settling time was seconds that much higher than expected which will disturb the passenger comfort. This point shows that the suspension design needs further improvement with consideration of using active suspension with adequate control system.
Optimization Design Blade Wind Turbine in Enhancing Power Based on Passive Control System Wiratama, I Kade; Yudhyadi, I Gusti Ngurah Ketut; Suartika, I Made; Nuarsa, I Made
Jurnal Penelitian Pendidikan IPA Vol 9 No 6 (2023): June
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i6.4052

Abstract

Control power on rotor wind turbine can be carried out by changing blade angle of attack through via pitch control and stall regulated method to produce much power and control power as well as protect wind turbine from high wind to operate in rated power. By using search-based design method to optimize design blade and Blade Element Momentum Theory (BEMT) to analyze aerodynamic performance for stall and pitch control power. Recent work demonstrates that some very significant effect can be achieved by using constant speed pitch control. Comparing of among ordinary blade and design blade of constant speed stall regulated and optimized show that enhancing power is nearly similar while design blade using pitch control give significant effect in enhancing aerodynamic performance of design blade. For average power, design blade constant speed pitch control has average power about 47970,77 Watt and constant speed stall regulated is 43855,41 Watt
The THE FERFORMANCE ANALYSIS OF ELECTRIC CAR OF THE UNIVERSITY OF MATARAM : THE FERFORMANCE ANALYSIS OF ELECTRIC CAR OF THE UNIVERSITY OF MATARAM Yudhyadi, I Gusti Ngurah Ketut; Pandiatmi, Pandri; Dyah S., Emmy; Alit, Ida Bagus; Sinarep
Energy, Materials and Product Design Vol. 4 No. 1 (2025): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/empd.v4i1.6342

Abstract

The university of Mataram car suspension and its control was designed to minimize the vibration produced by unwanted external inputs i.e., changes of road contours that reach the car passengers. This effort will provide the passenger with higher safety and comfort. In this study, a quarter car model with two degree of freedoms (2 DOF) was designed and developed its mathematical model. The effects of the road contour were studied and analyzed in term of overshoot and settling time that affect the main body, suspension as well as the passenger. The MATLAB Simulink model was programmed to mimic the behavior of the suspension and its response to the input which was the road contour (step function). This approach was very helpful to reduce the effort, time and money. The result shows that with implementation of the design parameters chose, the responses of the system (displacement and velocities) were satisfied the criteria of comfortable (there are no overshoot), however, the settling time was seconds that much higher than expected which will disturb the passenger comfort. This point shows that the suspension design needs further improvement with consideration of using active suspension with adequate control system.