Digital signal processor (DSP)-based large-power laser control system

Abstract

A digital signal processor (DSP)-based large-power laser control system mainly comprises a DSP master control module, a power supply conversion circuit, an analog quantity monitoring circuit, a digital quantity monitoring circuit, a DAC circuit, a digital quantity expansion circuit, an analog quantity expansion circuit, a digital power supply communication circuit, an IO control circuit, an external control interface circuit, a digital communication circuit, a network communication interface circuit, an upper computer communication interface circuit, a double-touch-screen display circuit, an optical coupler isolating circuit and a master control program. The DSP-based large-power laser control system is powered by the power supply conversion circuit. The DSP master control module is provided with a master control circuit based on a digital signal processor (DSP)dsPIC33FJ128MC710A chip. Through the master control program which is operated in the DSP master control program, detection and control are performed on the components from the analog quantity monitoring circuit to the optical coupler isolating circuit, thereby realizing monitoring and control for various states of the laser, so that the laser reaches a stable and reliable operation state.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a DSP-based high-power laser control system, which is suitable for high-power laser control systems, such as semiconductor lasers, fiber lasers, and all-solid-state lasers. Background technique [0002] High-power fiber-coupled all-solid-state lasers have the advantages of high efficiency, long life, high reliability, good beam quality, and flexible processing. Processing equipment based on this type of laser is widely used in automobiles, railways, ships, metallurgy, petrochemicals, national defense and In the laser welding, surface quenching and cladding processes in aerospace and other fields, it also has broad application prospects in the fields of rapid prototyping and remanufacturing. [0003] However, in the current high-power laser products, there is no unified and general-purpose control system with complete functions. Although the system developed by the PLC control tech...

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Problems solved by technology

[0003] However, in the current high-power laser products, there is no unified and general-purpose control system with complete functions. Although the system developed by the PLC control technology used in the current laser control system meets the control requirements of the laser to a certain extent, it is far from mature. There is still a big gap in the requirements for a stable industrial control system. At the same time, the large size and high cost also limit its wide application

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