Because the laser marking machine relies on the cooperation of X and Y vibration deflection, the light is reflected to the work surface for precise engraving. The control of the galvanometer is open-loop controlled by the computer. Therefore, the requirement must be linear, that is, there is a linear relationship between the input signal and the deflection angle. Because the galvanometer is a fast and precise machine, it is required that the acceleration be as large as possible from one working state to another, so that the marking time is infinitely small.