Android-Based Smart Centrifuge with PID Speed Control

Roichatun Nashichah; Deenda Putri Duta Natalia; Muhammad Kashif

doi:10.33019/

Authors

Roichatun Nashichah Department of Medical Electronics Technology, Poltekkes Kemenkes Surabaya
Deenda Putri Duta Natalia Department of Medical Electronics Technology, Poltekkes Kemenkes Surabaya
Muhammad Kashif Department of Biomedicine and Prevention, University of Rome Tor Vergata

DOI:

https://doi.org/10.33019/

Keywords:

Android Monitoring, Centrifuge System, PID Controller, Speed Regulation, Ziegler–Nichols Tuning

Abstract

This study aimed to design and implement an Android-based centrifuge monitoring system with Proportional Integral Derivative (PID) speed control to improve rotational speed stability and monitoring flexibility in laboratory applications. The system utilized a DC motor as the driving unit, a speed sensor for feedback acquisition, and an Android application developed using MIT App Inventor for real-time monitoring. PID parameters were determined using the Ziegler–Nichols open-loop tuning method based on the process reaction curve. From the experimental response, a dead time of 0.5 s and a time constant of 3.65 s were obtained, resulting in PID parameters of Kp = 8.76, Ki = 8.76, and Kd = 2.19. Experimental testing was performed using a tachometer to evaluate rotational speed performance. The results showed that the implemented PID controller provided stable speed regulation with improved response characteristics and low steady-state error. In addition, the Android application successfully displayed real-time operational data and maintained reliable communication with the centrifuge system. The proposed system demonstrated that the integration of PID control and Android-based monitoring can enhance both control accuracy and operational convenience for laboratory centrifuge applications.

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