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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Jurnal Teknik ITS International Journal of Supply Chain Management Sewagati
Yuniarto, Muhammad Nur
Institut Teknologi Sepuluh Nopember
Arts Humanities Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Public Health Social Sciences Transportation Other

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Computation of Reliability, Average Reliability, and Maintainability of Service Demand Fulfilment Dynamically using System Dynamics Mudjahidin, Mudjahidin; Buliali, Joko Lianto; Yuniarto, Muhammad Nur; Suryani, Erma
International Journal of Supply Chain Management Vol 8, No 3 (2019): International Journal of Supply Chain Management (IJSCM)
Publisher : International Journal of Supply Chain Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (13.163 KB)

Abstract

An enterprise not only need information about the time-based service performance (reliability and maintenance of services) but also need to know the effect of time variables on service performance and demand dynamically so as to determine the right service time to providing the services level. This article proposes system dynamics approach to simulate the reliability, average reliability and maintainability of services and enterprise based on service time of demand fulfillment. The model created is a dynamic model that forms a closed system containing negative feedbacks that can be used to simulate. Generally, in a dynamic model with negative feedback, the decrease of time variable causes the increase of reliability of service. However, the simulation scenarios of the dynamic model with negative feedbacks in this article show the decrease of time variables (service time of demand fulfillment and its meantime, meantime of reliability function) can cause either decrease, increase or no change to the total of demand as well as number and average of demand reliability, average reliability, and maintainability in the enterprise.
Designing and performance investigation of permanent magnet motor prototype for UTV electric drive train application Muhammad Nur Yuniarto; Yoga Uta Nugraha; I Made Yulistya Negara; Dimas Anton Asfani; Indra Sidharta
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 12, No 4: December 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v12.i4.pp2018-2029

Abstract

The dynamic design specifications of a vehicle are used to define the required torque and speed of a permanent magnet motor. This is due to providing clear instructions on the intent, performance, and construction of a vehicle. Therefore, this study aims to determine an engineering design and prototyping process of a Permanent Magnet Motor, to be used as an electric powertrain in a Utility Vehicle. Based on being used in severe road condition (steep inclination and off road), the vehicle should be able to handle a 45° inclination with total payload of approximately 250 kg. Using a rear-wheel-drive traction, its weight should also be less than 1000 kg. Furthermore, the motor should be operated at a maximum battery voltage of 100 V. According to the requirements, the electric powertrain should further have the ability to deliver a torque of approximately 1600 Nm on both rear wheels. Using a finite element method to simulate performances, transmission was coupled to the motor in providing the required torque. In addition, the motor prototype was subsequently manufactured and tested using a dynamometer. The results showed that the motor produced 19.6 kW, 5600 RPM, and 75 Nm at 96 V. Therefore, the design and prototyping process of the motor satisfied all the required specification.
Design and Performance Test of Axial Halbach Brushless DC Motor with Power Density 1.5 Kw/Kg Kevin Dwi Prasetio; Muhammad Nur Yuniarto
Jurnal Teknik ITS Vol 5, No 2 (2016)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (900.644 KB) | DOI: 10.12962/j23373539.v5i2.20658

Abstract

Progress of technology on electric vehicle component sector is one reason the emergence of electric vehicles at the moment. Starting from battery which has a great current density up to the automatic control systems on electric vehicles. But there are still some shortcomings of this electric vehicle components, one of which is the low value of power density of existing electric motor in the market today.On vehicles such as electric cars when Race Car Contest, energy saving problems about power density of the driving motor is very vital. This is because the total weight of the vehicle has a huge influence on the vehicle efficiency is against it. The issue is one of the reasons of the research task. In this final task is done making the design, simulation, and architecture of the Axial Halbach Brushless DC Motor. Use of system configuration on the halbach magnet to avoid the use of iron as a material cantilever rotor. By changing the material of the cantilever rotor with lighter materials such as aluminum or even carbon fibre, the value of power density electric motors can be increased. Then using the litz wire on coil stator to reduce loss-power loss due to the barriers on the coil. Coreless stator on the system and to avoid the phenomenon of cogging at the time due to low rpm style attraction magnet with iron in the core material. While the creation process begins by determining the specifications of the Axial Halbach Brushless DC motors. Then go into the design phase of the mechanical and electrical design. Who then conducted simulations to help determine other parameters such as air gap, slot turn, and magnetic orientation. The process of making a component of stator and rotor after the simulation is completed. After all the components of the rotor and stator on assembly, mounting the hall sensor is carried out to the right to position obtained by reading the signals. After the motor can spin with good motor performance, testing can be done. This final task generates Axial Halbach Brushless DC Motor with construction of one rotor and a stator. Axial DC Brushless Halbach Motor consists of 10 pole halbach magnet system permanent and 30 slot on the stator. On the performance test of Axial Halbach Brushless DCMotor it obtained efficiency of 92.72%, power output of 807.34 Watts, torque of 2.24 Nm, moment rpm 3451. As well as the power density of 0.588 kW/kg at 50% throttle openings
Rancang Bangun Struktur Jembatan di Kawasan Wisata Sawah dengan Simulasi Pembebanan Merata Ika Dewi Wijayanti; Aida Annisa Amin Daman; Arif Hariyadi; Putu Suwarta; Latifah Nurahmi; Vivien Suphandani Djanali; Muhammad Nur Yuniarto
Sewagati Vol 6 No 3 (2022)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1436.675 KB) | DOI: 10.12962/j26139960.v6i3.221

Abstract

Di era pandemi Covid-19, kebutuhan akan refreshing menjadi salah satu kebutuhan pokok yang dapat menimbulkan kebahagiaan sehingga dapat mendorong terbentuknya imunitas tubuh yang baik. Selain hemat biaya, daerah wisata ruang terbuka menjadi pilihan utama bagi para penikmat wisata untuk menikmati pemandangan alam dengan tetap memperhatikan protokol kesehatan dan meminimalisir resiko tertular Covid-19. Yang tak kalah penting, daerah wisata terbuka ini tentunya juga harus mengakomodir kebutuhan penikmatnya untuk mengabadikan momen berwisatanya melalui foto sehingga desain kawasan wisata nantinya merupakan daerah yang instagrammable dan menarik untuk dikunjungi. Hal-hal inilah yang mendorong tim pengabdian masyarakat untuk membantu masyarakat di Dusun Langkap Barat, Kec. Burneh, Kab. Bangkalan untuk merencanakan wisata sawah untuk mengembangkan potensi sumber daya alam serta sumber daya manusia di desa tersebut, sehingga usaha kecil dan menengah di desa ini dapat semakin berkembang dan nantinya kawasan wisata sawah ini dapat dinikmati oleh masyarakat luas dan mendorong tumbuhnya imunitas masyarakat yang semakin baik. Simulasi untuk melihat kekuatan struktur jembatan untuk spot swafoto dilaksanakan menggunakan perangkat lunak. Struktur dirancang sesuai dengan kondisi di lapangan. Dari hasil simulasi, diperoleh defleksi maksimum sebesar 0,23 mm dengan beban enam orang. Defleksi ini masih dalam kategori aman. Kawasan wisata sawah di Desa Langkap telah dibangun dengan tiga spot swafoto.
Co-Authors Aida Annisa Amin Daman Arif Hariyadi Buliali, Joko Lianto Dimas Anton Asfani Erma Suryani I Made Yulistya Negara Ika Dewi Wijayanti Indra Sidharta Kevin Dwi Prasetio Nurahmi, Latifah Putu Suwarta Vivien Suphandani Djanali Yoga Uta Nugraha