Drive motor control system and control method of laser-boring optical element

Abstract

The invention discloses a drive motor control system with a plurality of optical wedges. The drive motor control system comprises an instruction sending part, an instruction operating part, a motor drive part, a plurality of motors and the plurality of optical wedges, wherein the instruction sending part is used for sending an initial instruction value to the instruction operating part; the instruction operating part is used for receiving an instruction signal sent by the instruction sending part, and generating an operation speed signal of the motors according to a fed-back real-time speed signal of the motors; and the motor drive part drives the motors to operate according to the operation speed signal sent by the instruction operating part, so that the motors drive the optical wedges to rotate. The instruction operating part comprises a reference speed control part, a bore diameter control part and a conical degree control part. The reference speed of the rotation of the whole optical wedge system is controlled by the speed control part; the turning radius of a light beam is changed by the bore diameter control part during a rotating process of the optical wedges; and the conical degree formed by rotating the light beam is changed by the conical degree control part.

Description

technical field [0001] The invention belongs to the field of laser processing, and in particular relates to a motor control system and a control method of an optical element for laser drilling. Background technique [0002] A prism with a small refraction angle is called an optical wedge, and a double optical wedge is composed of two adjacent optical wedges with the same refractive index and equal refraction angle. When the laser is drilling, the motor drives the two optical wedges to rotate synchronously, so that the laser scans under the action of the double optical wedges. According to the existing theory, if the refraction angle α of the optical wedge and the incident angle of the light are small, the deflection angle is δ=(n-1)α, so the relative movement of the two optical wedges can produce different scanning patterns, these Features have been used increasingly widely. In the traditional dual optical wedge control, the upper controller and its software are usually us...

AI Technical Summary

Problems solved by technology

However, due to problems such as the control cycle of the host computer and the response of the motors, certain following errors will inevitably occur when the host controller is used to control each motor separately. If there is an error between the ratio and the preset value, the accuracy of the scanned graphics cannot be guaranteed

Images