Random control method for laser frequency energy of fiber laser for roll roughening

The invention belongs to the technical field of fiber laser roughening and discloses a random control method for the laser frequency energy of a fiber laser for roll roughening. According to the method, a random frequency and random duty ratio can be obtained in a random number generator through a set of random algorithms, the random number generator generates the random frequency and the random duty ratio to control the fiber laser to produce laser, the laser can burn a random position and a random sized roughen point on a cold roll, and then the process is repeated until the entire process is accomplished. According to the method, the generated frequency and the random duty ratio signals are produced, the frequency and the single pulse energy of laser pulse output by the fiber laser can be controlled, so that the frequency and the single pulse energy output by the fiber laser change randomly within a range, and high frequency signals can be produced. Therefore, the processing speed is fast, the requirement