TRAJECTORY DESIGN METHOD FOR VOLTAGE SATURATION OF A CURRENT AMPLIFIER

摘要

Galvano scanners are used as laser beam scanners in laser drilling machines. The galvano scanner requires high-speed and high-precision control for more precise laser processing with high throughput. Heat generated by current amplifiers becomes problematic as the positioning speed of the galvano scanner increases. We propose a final-state control (FSC) method that considers voltage constraint of the current amplifiers. By considering the constraint of the applied voltage on the motor, the power supply voltage of the current amplifier can be lowered. Therefore, the electricity consumption and the heat generated by the current amplifier can be reduced. Experimental results show the effectiveness of the proposed method.