Rancang Bangun Pengendalian Flow Menggunakan Orifice Dengan Metode PID Controller
DOI:
https://doi.org/10.53026/inhardware.v3i1.65Keywords:
Flow, Orifice Plate, PID Controller, ISO 5167, HMI NextionAbstract
Fluid flow instability due to pressure changes, external disturbances, and inaccuracies in adjusting the flow rate to the set point value are common problems in flow control. To overcome this, a flow control system using an orifice with the PID Controller method is designed. This system aims to maintain the fluid flow rate in the pipe to match the desired set point value. The orifice plate used is a concentric type made of stainless steel with a hole diameter of 0.54 inches and a thickness of 2.1 mm, installed on a 1-inch diameter pipe. The pressure difference between the upstream and downstream sides of the orifice is used to calculate the flow rate. The prototype design includes mechanical, wiring, and system interface stages using the Nextion HMI as a local monitoring medium in real time. PID parameters are obtained using the Ziegler-Nichols 1 method with S-curve analysis from the bump test. The results show that PI control (Kp = 1.8; Ti = 6.6) provides a more stable response even though there is an offset, without overshoot.
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