DESIGN OF AN EMBEDDED PID CONTROLLER FOR A PNEUMATIC LIFTING APPLICATION
DOI:
https://doi.org/10.11113/aej.v16.24836Keywords:
Pneumatic lifting system, PID control, Embedded system, Positioning accuracy, Industrial automation, Pneumatic positioning control, embedded PID controller, IoT-enabled automation, Arduino-based control system, real-time monitoringAbstract
Precise positioning of pneumatic actuators is often hindered by nonlinearities, load variations, and response delays, limiting their effectiveness in industrial automation. This study presents the design and implementation of an embedded proportional–integral–derivative (PID) controller with Internet of Things (IoT) integration for real-time monitoring and remote tuning. The system, developed on an Arduino Uno R3 with optical encoder feedback, employs a relay–transistor driver to interface 5 V control logic with 24 V electro-pneumatic valves. A closed-loop PID algorithm, executed at a 10 ms sampling interval, was optimized to improve transient response without inducing excessive actuator wear. Experimental results demonstrate a steady-state error below 2%, overshoot reduction exceeding 50%, and faster settling times compared to a non-embedded baseline. IoT functionality via the Blynk platform enabled remote gain adjustment, real-time visualization, and performance alerts, underscoring the potential of this cost-effective, scalable approach for high-accuracy pneumatic positioning in smart industrial systems.
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