Automated Control and Quality Traceability System for Electrostatic Oiling Machine Power Supplies

Electrostatic oiling systems apply a uniform lubricant film on metal sheets and precision components through high-voltage atomization. The power supply determines the charging efficiency of oil particles and thus directly affects coating uniformity and adhesion.
The proposed automation system integrates film thickness sensors, flow meters, and electrostatic field detectors in a closed-loop control configuration. Real-time measurements of oil layer thickness and substrate potential are processed to adjust the power supply’s output voltage, discharge frequency, and spray duration. A hybrid control algorithm combining PID regulation with fuzzy logic ensures high adaptability across varying materials and operating conditions.
To maintain production consistency, a digital traceability module logs all operational parameters, including voltage, current, temperature, and oil flow rate, for each batch. When post-inspection identifies coating irregularities, historical data can be used to pinpoint deviations in power parameters, enabling corrective maintenance and process optimization.
The power supply also incorporates pulse-width modulation for discharge stabilization and reverse-polarity cleaning cycles to prevent nozzle clogging. This results in uniform electric field distribution and reduced oil agglomeration.
By combining precision control and comprehensive data recording, the system ensures stable oil film thickness, consistent product quality, and full traceability—critical for modern automated manufacturing environments.