Since the laser marking machine relies on the cooperation of X and Y vibration deflection, the light is reflected onto the work surface for accurate carving. The operation of the galvanometer is controlled by the open loop of the computer. Therefore, the demand needs to be linear, that is, the input signal has a linear relationship with the deflection viewpoint. Since the galvanometer is a fast precision machine, the greater the acceleration from one working condition to another, the better.