Light power optimization control system for metallic-seal radio-frequency carbon dioxide laser

Abstract

The invention relates to a control system for a laser, and particularly discloses a light power optimization control system for a metallic-seal radio-frequency carbon dioxide laser. The light power optimization control system comprises a control computer and a laser, wherein the laser comprises a control board and a laser tube core connected with the control board, the control computer transmits a preset output power value to the control board via a digital communication interface, and the control board controls the output power of the laser tube core according to the preset output power value; and an embedded laser detection module is also connected on the control board, and the laser detection module tests the actual output power value of the laser tube core and feeds the actual output power value back to the control board so as to dynamically adjust the actual output power of the laser tube core. In the invention, the defects of the PWM (Pulse Width Modulation) control way are overcome, and the accurate control of output power is realized.

Description

technical field [0001] The invention relates to a laser control system, in particular to a metal-sealed radio frequency carbon dioxide laser optical power optimization control system. Background technique [0002] Metal carbon dioxide RF lasers are now widely used in laser marking, cutting, welding and other fields. According to different materials and different user requirements, it is necessary to adjust and control the output power of the laser. The existing technology is to control the power of the laser through the PWM signal, such as figure 1 As shown, the control computer 1 controls the laser 3 through the PWM signal line 2, PWM control mode: PWM control is to realize the power output control by changing the duty cycle of the square wave signal, as shown in figure 2 shown, where [0003] Definition of Duty Cycle: [0004] Duty = T period T on ...

AI Technical Summary

Problems solved by technology

In the actual application process, production personnel must measure the laser output power while changing the PWM duty cycle based on experience, and it will take a long time to achieve accurate laser output power

At the same time, during the operation of the laser, the output power value of the laser will have a deviation of 5-10%.

For occasions where precise control is to be achieved, such a deviation is difficult to meet the requirements

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