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THE ABILITY OF THE CONTINUOUSLY VARIABLE TRANSMISSION TO CONTROL THE ENGINE AT MAXIMUM POWER: LITERATURE REVIEW Sugeng Ariyono; Bambang Supriyo; Indra Feriadi; Dedy Ramdhani Harahab; Nurul Akmar Akmar Abu Husain
SINERGI Vol 25, No 3 (2021)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2021.3.011

Abstract

Good ride performance is one of the most important key attributes of a passenger vehicle. One of the methods to achieve this is by using Continuously Variable Transmission (CVT). This is because a CVT can provide an almost infinite ratio within its limits smoothly and continuously. The flexibility of a CVT allows the driving shaft to maintain a constant angular velocity over a range of output velocities. New developments in gear reduction and manufacturing have led to ever more robust CVTs, allowing them to be applied in more diverse automotive applications. As CVT development continues, costs will be reduced further, and the performance will continue to improve, making further development and application of the CVT technology desirable. This cycle of improvement will offer CVT a solid foundation in the world's automotive infrastructure. This paper aims to provide some background and relevant information that is necessary for this study. Specifically, a brief description of CVT, advantages and their brief history is presented. This paper also evaluates the current state of CVT, investigate the technology frontline of drivetrain control and the development of CVT. The stepless transmission is able to maintain the engine running at its maximum power.
Alat Peraga Kendali Pemanas Udara Berbasis Arduino Uno Sebagai Penunjang Praktikum Laboratorium Kendali Politeknik Negeri Semarang [A Demonstration Tool of Arduino Based Air Heater Controller to Support Control Laboratory of Politeknik Negeri Semarang] Bambang Supriyo; Samuel Beta Kuntardjo; Sihono Sihono
FaST - Jurnal Sains dan Teknologi (Journal of Science and Technology) Vol 1, No 1 (2017): November
Publisher : Universitas Pelita Harapan

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Abstract

The objective of this research is to develop and test the demonstration tool of Arduino based air heater controller with Proportional Integral Derivative (PID) based control methods for the temperature range between 50ºC and 70ºC.   Arduino Uno was programmed using C-language to do control tasks and to transfer control data serially to computer via USB port. The selection of the initial PID  parameters are determined using the combination of Relay Feedback method and Ziegler-Nichols  formula.  The control methods were focused on proportional (P), proportional derivative (PD) dan Proportional Integral Derivative (PID) with the performance criteria based on overshoot  dan steady state error.  The experimental results show that the PID controllers give best output responses in terms of zero steady state errors, while P and PD controllers still result in steady state errors of about 3ºC. In addition, P controllers still give about 2,5ºC-4ºC fluctuative output values below set points, while the PD and PID have very small fluctuative values and even very close to zero. This laboratory demonstration tool has shown very good PID based controller performance, so it is feasible to be used as a supporting demonstration tool for control system laboratory in Politeknik Negeri Semarang or even other universities.
Penerapan Sistem Informasi dan Manajemen Perpustakaan Berbasis IoT untuk Meningkatkan Literasi di SD N Kramas, Tembalang, Kota Semarang Eni Dwi Wardihani; Bambang Supriyo; Ilham Sayekti
Bhakti Persada Jurnal Aplikasi IPTEKS Vol 7 No 1 (2021): Mei 2021
Publisher : P3M Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/bp.v7i1.2160

Abstract

Tuntutan kemampuan literasi bagi usia sekolah menjadi landasan Gerakan Literasi Sekolah. Berdasarkan survei yang telah dilakukan oleh Politeknik Negeri Semarang di SDN Kramas didapati bahwa permasalahan dilatarbelakangi oleh kekurangan sarana dan prasarana pendukung Gerakan Literasi Sekolah, di mana salah satu komponennya adalah perpustakaan. Pengabdian masyarakat ini bertujuan untuk membantu kegiatan Gerakan Literasi Sekolah SDN Kramas. Metode yang dilaksanakan adalah pada aspek Non ASN dengan membuat sistem informasi dan manajemen perpustakaan database berbasis IoT (Internet of Things) Library Management System. Selain itu, adalah pada aspek ASN dengan memberikan pelatihan kepada tenaga perpustakaan agar dapat mengoperasikan sistem informasi dan manajemen perpustakaan. Hasil yang dicapai adalah terimplementasinya website perpustakaan dengan nama domain perpustakaan.sdnkramas.sch.id dan keterampilan pustakawan dalam mengeola website tersebut. Integrasi sistem tersebut diharapkan dapat membuat manajemen di perpustakaan SDN Kramas menjadi lebih baik dan terkelola.
Peningkatan Ketersediaan Air Bersih Melalui Penerapan Teknologi Tepat Guna Di Sekolah Dasar Sri Kusumastuti; Vinda Setya Kartika; Ilham Sayekti; Bambang Supriyo; Septiantar Tebe Nursaputro; Sidiq Syamsul Hidayat; Sheilla Nadia Valina; Devi Yesitasari; Faizah
AMMA : Jurnal Pengabdian Masyarakat Vol. 5 No. 2 : Maret (2026): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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Abstract

Clean water availability is a fundamental need that plays an important role in supporting educational activities, environmental hygiene, and the implementation of religious activities in schools. SD Islam Fitra Bhakti faced limited clean water supply caused by insufficient water tank capacity and an inadequately managed water distribution system. This condition disrupted sanitation activities and routine worship practices of students and teachers, particularly during peak water usage periods. This Community Service Program aimed to improve the availability and reliability of clean water supply through the application of appropriate technology that is simple, effective, and suitable for partner conditions. The implementation methods included needs assessment and analysis, technical solution design, installation of the water supply system, as well as training and assistance for school staff. The implemented solution consisted of adding water storage tanks, installing a PDAM-based water supply system, and applying an automatic stop valve to control water flow into the tank. The results indicate that the implemented system successfully increased water storage capacity and ensured a more stable continuity of clean water supply. In addition, school staff demonstrated improved understanding and independence in operating and maintaining the system after the training was conducted. The application of this appropriate technology had a positive impact on water management efficiency and supported the long-term sustainability of school operations.