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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Journal of Evrimata: Engineering and Physics Evrimata: Journal of Mechanical Engineering
Zakiyah Amalia
State Polytechnic of Malang
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Materials Science & Nanotechnology Mechanical Engineering

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Nonlinearity compensation of low-frequency loudspeaker response using internal model controller Erni Yudaningtyas; Achsanul Khabib; Waru Djuriatno; Dionysius J. D. H. Santjojo; Adharul Muttaqin; Ponco Siwindarto; Zakiyah Amalia
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 2: April 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i2.11761

Abstract

This paper presents the nonlinearity compensation of low-frequency loudspeaker response. The loudspeaker is dedicated to measuring the response of Electret Condenser Microphone which operated in the arterial pulse region. The nonlinearity of loudspeaker has several problems which cause the nonlinearity behaviour consists of the back electromagnetic field, spring, mass of cone and inductance. Nonlinearity compensation is done using the Internal Model Controller with voltage feedback linearization. Several signal tests consist of step, impulse and sine wave signal are examined on different frequencies to validate the effectiveness of the design. The result showed that the Internal Mode Controller can achieve the high-speed response with a small error value.
Low-frequency response test device of electret condenser microphone Erni Yudaningtyas; Achsanul Khabib; Waru Djuriatno; Zakiyah Amalia; Ramadhani Kurniawan Subroto
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 18, No 3: June 2020
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v18i3.14831

Abstract

Arterial pulse measurement using electret condenser microphone requires the standard to validate the value of the measurement. This standard requires the test device to reproducing the mechanical vibration to emulate the arterial pulse vibration. The main objective of this paper is to discuss the test device of electret condenser microphone using class A amplifiers and low-frequency loudspeaker. To validate this pulse measurement, this class a amplifier is examined under an experimental setup. The experiments showed that the device can be used as an alternative solution to generate the mechanical signal source to simulate the human arterial pulse.
Stabilized controller of a two wheels robot Ahmad Fahmi; Marizan Sulaiman; Indrazno Siradjuddin; I Made Wirawan; Abdul Syukor Mohamad Jaya; Mahfud Jiono; Zakiyah Amalia
Bulletin of Electrical Engineering and Informatics Vol 9, No 4: August 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v9i4.1965

Abstract

The Segway Human Transport (HT) robot, it is dynamical self-balancing robot type. The stability control is an important thing for the Segway robot. It is an indisputable fact that Segway robot is a natural instability framework robot. The case study of the Segway robot focuses on running balance control systems. The roll, pitch, and yaw balance of this robot are obtained by estimating the Kalman Filter with a combination of the pole placement and the Linear Quadratic Regulator (LQR) control method. In our system configuration, the mathematical model of the robot will be proved by Matlab Simulink by modelling of the stabilizing control system of all state variable input. Furthermore, the implementation of this system modelled to the real-time test of the Segway robot. The expected result is by substitute the known parameters from Gyro, Accelero and both rotary encoder to initial stabilize control function, the system will respond to the zero input curve. The coordinate units of displacement response and inclination response pictures are the same. As our expected, the response of the system can reach the zero point position. 
Linear quadratic regulator and pole placement for stabilizing a cart inverted pendulum system Mila Fauziyah; Zakiyah Amalia; Indrazno Siradjuddin; Denda Dewatama; Rendi Pambudi Wicaksono; Erni Yudaningtyas
Bulletin of Electrical Engineering and Informatics Vol 9, No 3: June 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1060.219 KB) | DOI: 10.11591/eei.v9i3.2017

Abstract

The system of a cart inverted pendulum has many problems such as  nonlinearity, complexity, unstable, and underactuated system. It makes this system be a benchmark for testing many control algorithm. This paper  presents a comparison between 2 conventional control methods consist of a linear quadratic regulator (LQR) and pole placement. The comparison  indicated by the most optimal steps and results in the system performance  that obtained from each method for stabilizing a cart inverted pendulum system. A mathematical model of DC motor and mechanical transmission are included in a mathematical model to minimize the realtime implementation problem. From the simulation, the obtained system performance shows that each method has its advantages, and the desired pendulum angle and cart position reached.
Response of Vibration Reduction with Additional of Dual Dynamic Vibration to The Main System Talifatim Machfuroh; Zakiyah Amalia; Fica Aida Nadhifatul Aini
Journal of Evrímata: Engineering and Physics Vol. 01 No. 01, 2023
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/journalofevrmata.vi.4

Abstract

Excessive vibration in a system occurs when the force acting on a system is close to the natural frequency of the system. This vibration can be reduced by adding a dynamic vibration absorber (DVA) to the system. Several researchers have done a lot of research related to DVA and dual DVA (DDVA) placement in the main system. In this research, we conducted a study of the effect of DDVA-dependent addition on translational and rotational vibration responses in the 2-dof main system. This research was started by building a prototype of a 2 DOF vibration system without DDVA and with DDVA. From the prototype, equations of motion and block simulations were then made to determine changes in vibration characteristics that occur in the main system. From the research results it was found that the placement of the DDVA-dependent cantilever absorber at the end of the system with rI 1/10 was able to reduce the vibration of the main system with a percentage reduction at a frequency of 12.78 Hz of 94.1681% for the translation direction and 15.3878% for the rotation direction. Changes in the distance ratio and the inertia ratio of the absorber mass do not affect the DDVA-dependent ability to reduce vibrations in the translation direction.
Radiator Coolant Temperature Control System Based on Inlet-Outlet Temperature Difference Using Fuzzy Logic Controller Bagus Tri Pambudi; Zakiyah Amalia
Evrimata: Journal of Mechanical Engineering Vol 03. No 01. (2026)
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The radiator cooling system plays an important role in maintaining optimal engine operating temperature. To improve the effectiveness of coolant temperature control, it is necessary to select a control method that is able to provide a good system response. This study aims to compare the performance of ON/OFF control and Sugeno type Fuzzy Logic Controller (FLC) in the control system. Tests were conducted at ΔT setpoints of 2°C, 4°C, and 6°C. System performance was evaluated based on the parameters of rise time, overshoot, settling time, steady-state error (SSE), and mean absolute error (MAE). The test results showed that the Fuzzy method produced a rise time that was 8.28% faster, an average overshoot that was 8.15% lower, a settling time that was 6.48% faster, and a smaller MAE that was 11.33% lower than the ON/OFF method. Based on the evaluation of system response parameters, the Fuzzy method was considered more suitable for application in the ΔT-based radiator coolant temperature control system.
Co-Authors Abdul Syukor Mohamad Jaya Achsanul Khabib Adharul Muttaqin Ahmad Fahmi Bagus Tri Pambudi Dewatama, Denda Dionysius J. D. H. Santjojo Erni Yudaningtyas Erni Yudaningtyas Erni Yudaningtyas Fica Aida Nadhifatul Aini I Made Wirawan Indrazno Siradjuddin Mahfud Jiono Marizan Sulaiman Mila Fauziyah Ponco Siwindarto Ramadhani Kurniawan Subroto Rendi Pambudi Wicaksono Talifatim Machfuroh Waru Djuriatno Waru Djuriatno