Introduction to the control principle of fiber laser cutting machine laser

In order to operate a fiber laser cutting machine proficiently and make it convenient for everyone in actual operation, it is indispensable to understand how to control the laser awakening of the fiber laser cutting machine, which requires everyone to understand its control principle. Let's analyze it for everyone below.　　 The laser control principle of fiber laser cutting machine is actually very simple. The laser is a current-type drive device, and the drive current is the prerequisite for the output optical power. The output power of the laser can be changed by changing the size of the laser power supply current. The basic method of the system to control the output power of the laser is: the single-chip microcomputer controls the output resistance of the digital potentiometer DS1867 to change the voltage at the control terminal of the switching power supply, thereby controlling the output current of the switching power supply and changing the output of the fiber laser power.　　 The output resistance of the digital potentiometer DS1867 is calculated by formula (1) Ru003dDu0026times; RWL+RW. Among them, RW is the wiper resistance, which is the internal potentiometer electronic switch resistance, usually RWu0026le;100u0026Omega;, the typical value is 40u0026Omega;;RWL is the resistance value of each resistance unit in the internal electronic array of the digital potentiometer DS1867; D Is the input digital quantity.　　According to the requirements of fiber laser power control, that is, the user's requirements for the output power performance of the fiber laser, the 10-level power output products required by the user are designed. Different power levels output have different requirements for the laser marking objects. According to experiments, the system design requires the output current of the switching power supply to vary from 0 to 12 A, and the power corresponds to the linear output of the current, allowing a 1% error fluctuation in power stability.　　 Wuhan Gaoneng Laser Equipment Manufacturing Co., Ltd. is a high-tech enterprise integrating Ru0026D, production and sales of professional laser complete sets of equipment. Not only successfully developed laser equipment with advanced technology, but also used self-support import and export rights to promote products to more than forty global products including Hong Kong, South Korea, Vietnam, Malaysia, Thailand, Australia, the United States, Japan, Germany, the Netherlands, Jordan, etc. nation.