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All Journal Bulletin of Electrical Engineering and Informatics Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Sinergi Civil Engineering Journal Jurnal Instrumentasi
Himma Firdaus
Pusat Penelitian Sistem Mutu dan Teknologi Pengujian – LIPI Kawasan PUSPIPTEK Gedung 410 Setu, Tangerang Selatan, Banten, Indonesia
Agriculture, Biological Sciences & Forestry Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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The Characteristics of Digital Temperature Sensor Ds18b20: Temperature Rise and Temperature Target Utomo, Bayu; Firdaus, Himma
Instrumentasi Vol 37, No 2 (2013)
Publisher : LIPI Press, Anggota IKAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/instrumentasi.v37i2.38

Abstract

A regulator testing facility of LPG steel tubes has just been developed. The development is performed for chamber using regarding standardization of temperature test in order to comply with the requirement of SNI (Standar Nasional Indonesia - Indonesian National Standard) for regulators of LPG steel tubes. The development is performed by replacing older chamber with a smaller and more efficient one. One of the important instruments that have been developed is a temperature monitoring device inside the chamber. The developed temperature monitoring device consists of DS18B20 sensor and ATmega328 series microcontroller. The purpose of this paper is to show the result of characterization of temperature monitoring system. The characterization is conducted by measuring the system in various temperature as follows: -10°C, 0°C, 20°C, 40°C, and 60°C. The result shows that there is a considerable difference in temperature rise on DS18B20 compared to on thermocouple at temperature set of 0°C at which thermocouple has better error pattern related to the reference temperature. Temperature set of 20°C becomes base characteristic for both temperature rise and temperature target. Compared to its reference temperature, the time period of temperature rise for thermocouple has better performance than that of DS18B20 at temperature under 20°C. However, DS18B20 provides a better deviation than thermocouple for temperature test requirement as stated in temperature test method for SNI gas regulator. Keywords: DS18B20, temperature rise, deviation, ATmega328, characterization. a
Design and development of automatic voltage regulator using Ziegler-Nichols PID for electrical irons testing Sukma, Irawan; Suseno, Aji Dwi; Muhidin, Muhidin; Bakti, Prayoga; Ardiatna, Wuwus; Supono, Ihsan; Firdaus, Himma; Mandaris, Dwi
Bulletin of Electrical Engineering and Informatics Vol 13, No 6: December 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v13i6.7326

Abstract

This research presents an automated voltage regulation system crucial for a power input test of electric irons based on SNI IEC 60335-2-3 clause 11.4. The system is designed with an Arduino-based proportional-integral-derivative (PID) control mechanism to augment voltage stability and meet the standard requirement. The system comprises a microcontroller for PID control, a dimmer as the actuator, and a voltage sensor for error measurement. It utilizes the Ziegler-Nichols (Z-N) oscillation method to determine the PID control parameters. The simulation results identified a third-order transfer function as the best fit for the system, and the optimal PID parameters for the system are Kp=60, Ki=125, and Kd=500. The system was tested under the electric iron's active and non-active conditions. The proposed PID system demonstrated stable responses, effectively regulating the system voltage with minimal overshoot and settling time, and meeting standard requirements even under varying load conditions. It suggests potential applications beyond electric iron testing, promising efficiency improvements in broader household product testing.
Glow-Wire Analysis of Polypropylene Blends for Mechanical and Marine Engineering Applications Firdaus, Himma; Supono, Ihsan; Pratama, Anandito Adam; Istanto, Iwan; Prabowo, Aditya Rio; Kusnandar, Nanang; Kasiyanto, Iput; Wijaya, Rahman; Lailiyah, Qudsiyyatul; Budiana, Eko Prasetya; Yaningsih, Indri; Akbar, Hammar Ilham; Imanullah, Fahmi
Civil Engineering Journal Vol. 11 No. 7 (2025): July
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2025-011-07-018

Abstract

Polymer materials are widely used due to their versatility; however, their vulnerability to fire is a significant concern, especially under electrical influences on engineered mechanical designs and marine structure applications. This study examines the fire resistance of a polypropylene (PP) blend using Glow-Wire Flammability Index (GWFI) and Glow-Wire Ignition Temperature (GWIT) tests. While previous research typically relies on flame-retardants to address flammability, this work proposes using a simple 1:1 weight ratio blend of two distinct PP types. This specific PP blend was selected to provide balanced material properties and improved processing consistency. The results from glow-wire tests were compared with previous findings to evaluate flammability performance. Our findings reveal that although the PP blend offers enhanced fire resistance compared to neat PP, it remains inferior to PP-containing flame-retardant additives. The outcomes suggest that this blended PP may be suitable for applications where mechanical properties, cost-effectiveness, and recyclability precede fire resistance, such as engineered automotive interiors, mechanical design of marine transportation, and low-risk electrical components in engineering infrastructure. This initial research contributes valuable insights into the fire behavior of PP blends. Moreover, it establishes a foundation for future investigations into polymer fire resistance, encouraging additional glow-wire testing on other polymer systems.
An FFT-based vibration characterization on road profile of two-wheeler electric vehicle Firmansyah, Mohamad Ardy; Feriyanto, Dafit; Firdaus, Himma; Pranoto, Hadi; Istiqomah, Istiqomah
SINERGI Vol 29, No 3 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2025.3.023

Abstract

Vibration is an inevitable physical phenomenon; excessive and uncontrolled amounts of vibration can result in damage and system failure. In accordance with various automotive product certification standards, vehicle batteries or rechargeable electrical energy stotrage system (REESS) must undergo a vibration test to assess their mechanical integrity. This study aims to broaden the perspective on vibration assessment by examining it during vehicle operation and assessing the protective capabilities of vehicle suspension against vibrations from damaged roads in two-wheeled electric motor vehicles. The proposed method involves installing an accelerometer on the battery pack body placed in the battery compartment. The experimental setup involved conducting tests on a 125-meter track, with the vehicle traversing roads characterized by concrete cracks, uneven surfaces, and potholes. Two distinct speed variations were selected for analysis: 10 and 15 kilometers per hour. The results obtained from the Rion VA 12 portable vibration analyzer are presented as a plot of the fast Fourier transform (FFT) graph. The maximum acceleration recorded was 2.35 and 1.98 G at the same frequency of 7 hertz (Hz). This research method and result aligns with others, including those focused on assessing road damage, passenger comfort, and vehicle component damage, such as shock absorbers. In the future, the development of a vehicle battery support structure is anticipated to further minimize vibration disturbance by reducing the peak acceleration values depicted in the FFT graph. The minimization of incoming vibrations is expected to enhance the safety and durability of the battery pack. 
Advanced Control for Quadruple Tank Process Kasiyanto, Iput; Firdaus, Himma; Lailiyah, Qudsiyyatul; Kusnandar, Nanang; Supono, Ihsan
Jurnal Ilmiah Teknik Elektro Komputer dan Informatika Vol. 10 No. 1 (2024): March
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jiteki.v10i1.27124

Abstract

In the realm of control systems, the last three decades have witnessed significant advancements in model predictive control (MPC), an advanced technique renowned for its ability to optimize processes with constraints, handle multivariate systems, and incorporate future references when feasible. This paper introduces an innovative offset-free MPC approach tailored for the control of a complex nonlinear system—the quadruple tank process (QTP). The QTP, known for its deceptively simple yet challenging multivariate behavior, serves as an ideal benchmark for evaluating the efficacy of the proposed algorithm. In this work, we rigorously compare the performance of the PID and MPC controller when applied to both linear and nonlinear models of the QTP. Notably, our research sheds light on the advantages of MPC, particularly when confronted with constant disturbances. Our novel algorithm demonstrates exceptional capabilities, ensuring error-free tracking even in the presence of persistent load disturbances for both linear and nonlinear QTP models. Compared to the PID control, the proposed method can reduce the overall set point tracking error up to 32.1%, 27.6%, and 38.54% using the performance indices ISE, ITAE, and IAE, respectively, for the linear case. Furthermore, for the nonlinear case, the overall set point tracking error reduction is up to 93.4%, 94.9%, and 91.5%. This work contributes to bridging the gap in effective control strategies for nonlinear systems like the QTP, highlighting the potential of offset-free MPC to enhance control and stability in a challenging process industry involving automatic liquid level control.
Co-Authors Aditya Rio Prabowo Akbar, Hammar Ilham Bayu Utomo Budiana, Eko Prasetya Dafit Feriyanto Dwi Mandaris Firmansyah, Mohamad Ardy Hadi Pranoto Hari Tjahjono Imanullah, Fahmi Indri Yaningsih Iput Kasiyanto Irawan Sukma, Irawan Istanto, Iwan istiqomah istiqomah Kasiyanto, Iput Kusnandar, Nanang Muhidin . Pratama, Anandito Adam Prayoga Bakti Qudsiyyatul Lailiyah Supono, Ihsan Suseno, Aji Dwi Utomo, Bayu Utomo, Bayu Wijaya, Rahman Wuwus Ardiatna