Analisis Respons Frekuensi Bode dan Nyquist pada Pengendali PID Berdasarkan Data Sensor Aliran dan Tekanan dalam Multi Loop Controller pada Sistem Fluida

Abstract

This study aims to analyze the frequency response of a fluid system controlled by a PID (Proportional-Integral-Derivative) controller using flow and pressure sensor data. Data were collected from a Multi-Loop Controller system to evaluate the performance and stability of the system in both household and industrial plumbing applications. Using Bode and Nyquist diagrams, the frequency response of the system was analyzed to assess the effectiveness of the designed PID controller. The research results show that at a frequency of 0.5 Hz, the system experiences a magnitude of -8 dB with a phase of -85°, while at a frequency of 50,000 Hz, the system shows a magnitude of 22 dB and a phase of 120°. Based on this analysis, the PID controller successfully maintained system stability with a frequency response that was consistent and aligned with theoretical predictions. No significant deviations were found in the sensor data used, confirming the accuracy and reliability of the controller in maintaining system performance. This study provides valuable insights into the application of PID controllers in fluid systems and reinforces the understanding of the impact of frequency response in ensuring overall system stability and performance..