CN108857094B - Laser control method and device - Google Patents

Laser control method and device Download PDF

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Publication number
CN108857094B
CN108857094B CN201810862267.XA CN201810862267A CN108857094B CN 108857094 B CN108857094 B CN 108857094B CN 201810862267 A CN201810862267 A CN 201810862267A CN 108857094 B CN108857094 B CN 108857094B
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laser
track
duty ratio
speed
preset
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CN108857094A (en
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纪宠钎
王立松
蔡兴华
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Shenzhen Leadshine Control Technology Co Ltd
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Shenzhen Leadshine Control Technology Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36Removing material
    • B23K26/38Removing material by boring or cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70Auxiliary operations or equipment
    • B23K26/702Auxiliary equipment

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

The invention provides a laser control method and device, and relates to the technical field of industrial motion control. The laser control method comprises the following steps: judging whether the track speed during laser cutting is greater than a preset speed threshold value or not; and if so, starting a duty ratio following mode to control the output energy of the laser, wherein the pulse duty ratio of the laser is controlled based on the track speed in the duty ratio following mode. The laser control method controls the pulse duty ratio of the laser according to the track speed during laser cutting, so that the output power of the laser is accurately controlled to be matched with the track speed, and the laser processing efficiency and the processing effect are improved.

Description

Laser control method and device
Technical Field
The invention relates to the technical field of industrial motion control, in particular to a laser control method and device.
Background
Laser is another important invention of human beings after nuclear power, computers and semiconductors in 20 th century, and is called as "fastest knife", "best-line ruler" and "brightest light". Laser applications are wide, mainly including laser marking, laser welding, laser cutting, fiber-optic communication, laser spectroscopy, laser ranging, laser radar, laser weapons, laser records, laser pointers, laser vision correction, laser cosmetology, laser scanning, laser mosquito killer, and the like. The application of laser in the field is also very important, and especially, laser marking, laser welding, laser cutting, laser welding and the like put forward extremely high requirements on the control of laser.
The core control component of the industrial laser equipment generally comprises a laser control system of a man-machine interaction layer, and a control layer of the laser control system consists of a motion controller and a laser controller. The motion controller in the control layer is responsible for the related planning of the whole motion track of the equipment, so that the laser can process a preset workpiece product at a preset speed according to a preset track; the laser controller in the control layer is responsible for controlling the energy of the laser output. The laser controller generally receives an external PWM (pulse width modulation) signal to determine the magnitude of the laser energy output, and usually adopts a fixed PWM output frequency to adjust the laser energy by adjusting the PWM duty cycle. However, the existing laser controller adopts constant energy output in the whole working process, and the track speed of the laser needs to be kept constant, so that the problems of insufficient fineness, low processing efficiency and poor processing effect exist in laser processing.
Disclosure of Invention
In view of this, an embodiment of the present invention provides a laser control method and apparatus to solve the problems of constant laser processing track speed, insufficient laser processing precision, low processing efficiency, and poor processing effect in the prior art.
In a first aspect, an embodiment of the present invention provides a laser control method, where the laser control method includes: judging whether the track speed during laser cutting is greater than a preset speed threshold value or not; and if so, starting a duty ratio following mode to control the output energy of the laser, wherein the pulse duty ratio of the laser is controlled based on the track speed in the duty ratio following mode.
In summary of the first aspect, before the determining whether the track speed during laser cutting is greater than a preset speed threshold, the laser control method further includes: determining the track position of the laser as the track starting position needing laser cutting; and adjusting the pulse duty ratio of the laser to a critical value capable of carrying out laser cutting.
In summary of the first aspect, before determining that the track position of the laser is the track start position that needs to be cut by the laser, the laser control method further includes: determining that the distance between the track position of the laser and the track starting position is smaller than a preset distance threshold; the laser used to generate the laser light is activated.
In summary of the first aspect, after determining whether the track speed during laser cutting is greater than a preset speed threshold, the laser control method further includes: and when the track speed is smaller than the preset speed threshold, closing the duty ratio following mode, and controlling the pulse duty ratio of the laser to be a preset constant threshold.
In summary of the first aspect, in the duty following mode, the pulse duty increases as the trajectory speed increases and decreases as the trajectory speed decreases.
In a second aspect, an embodiment of the present invention provides a laser control apparatus, including: the speed judging module is used for judging whether the track speed during laser cutting is greater than a preset speed threshold value or not; and the output control module is used for starting a duty ratio following mode to control the output energy of the laser when the track speed is greater than the preset speed threshold, wherein the pulse duty ratio of the laser is controlled based on the track speed in the duty ratio following mode.
In summary of the second aspect, the laser control apparatus further includes an initiation control module, where the initiation control module includes: the starting judgment unit is used for determining the track position of the laser as the starting position of the track needing laser cutting; and the critical value adjusting unit is used for adjusting the pulse duty ratio of the laser to a critical value capable of carrying out laser cutting.
In summary of the second aspect, the laser control apparatus further includes a pre-start module, where the pre-start module includes: the distance judgment unit is used for determining that the distance between the track position of the laser and the track starting position is smaller than a preset distance threshold; and the laser starting unit is used for starting the laser for generating laser.
In a second aspect, the laser control apparatus further includes a constant control module, where the constant control module is configured to close the duty ratio following mode when the track speed is smaller than the preset speed threshold, and control the pulse duty ratio of the laser to be a preset constant threshold.
In a third aspect, an embodiment of the present invention further provides a computer-readable storage medium, where computer program instructions are stored, and when the computer program instructions are read and executed by a processor, the steps in the method in any aspect are performed.
The beneficial effects provided by the invention are as follows:
the invention provides a laser control method and a laser control device, wherein the laser control method controls the intensity of the energy output of laser according to the pulse duty ratio of the laser when a laser controller controls the energy output of the laser, so that the control precision of the laser is improved; meanwhile, when the track speed is greater than the preset speed threshold, a duty ratio following mode is started to control the output energy of the laser, so that the laser controller adjusts the pulse duty ratio of the laser in real time according to the track speed, the requirement on the stability of the motion control speed in the laser processing process is reduced, and the processing efficiency and the processing effect are improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic flowchart of a laser control method according to a first embodiment of the present invention;
fig. 2 is a schematic diagram illustrating changes of a duty ratio and a track speed in a duty ratio following mode according to a first embodiment of the present invention;
fig. 3 is a schematic block diagram of a laser control apparatus according to an embodiment of the present invention;
fig. 4 is a block diagram of an electronic device applicable to the embodiment of the present application according to a third embodiment of the present invention.
Icon: 100-laser control means; 110-a pre-boot module; 120-speed judgment module; 130-a start control module; 140-an output control module; 200-an electronic device; 201-a memory; 202-a memory controller; 203-a processor; 204-peripheral interface; 205-input-output unit; 206-an audio unit; 207-display unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
First embodiment
The applicant researches and discovers that the conventional laser controller adopts constant energy output in the whole working process, namely constant frequency and duty ratio are given according to material characteristics and track speed, so that the track speed is required to be always constant in the laser output process, and no matter equipment vibration or the loss of equipment machinery is considered, the general equipment cannot bear the condition that the speed of a large corner is not reduced, namely the corner is inevitably subjected to speed reduction to a certain degree, so that the track speed fluctuation can influence the actual processing quality, for example, when the laser controller is applied to the laser engraving occasion, the speed fluctuation can easily cause uneven engraved surface, the welding wire is not uniform, the wavy lines are formed and the like. In order to solve the above problem, a first embodiment of the present invention provides a laser control method, which can be applied to a laser controller or a computer, an intelligent terminal, and other computing processing devices connected to the laser controller.
Referring to fig. 1, fig. 1 is a schematic flow chart of a laser control method according to a first embodiment of the present invention.
Step S20: and judging whether the track speed during laser cutting is greater than a preset speed threshold value.
The track speed is the linear speed of the motion track of the laser cutting point, and the preset speed threshold value can be specifically adjusted according to the requirements of the characteristics, track characteristics and the like of the cut material.
Step S40: and when the track speed is greater than the preset speed threshold, starting a duty ratio following mode to control the output energy of the laser, wherein the pulse duty ratio of the laser is controlled based on the track speed in the duty ratio following mode.
The laser controller in this embodiment adjusts the output energy of the laser by Pulse Width Modulation (PWM), where PWM is a very effective technique for controlling an analog circuit by using digital output of a microprocessor, and modulates the bias of the base of a transistor or the gate of an MOS transistor according to the change of a corresponding load to change the conduction time of the transistor or the MOS transistor, thereby changing the output of a switching regulator, and this way can keep the output voltage of a power supply constant when the working condition changes, and is a very effective technique for controlling an analog circuit by using a digital signal of a microprocessor. The Duty Cycle (Duty Cycle) refers to the proportion of the energization time to the total time in one pulse Cycle, for example, the pulse width is 0.1 ms, the signal period is 0.4 ms, and the pulse Duty Cycle of the pulse sequence is 0.25. The pulse duty ratio in laser processing refers to the proportion of the beam irradiation time in each pulse, and is the ratio of the peak power to the valley power in one pulse, so that the larger the pulse duty ratio is, the lower the roughness of the cut surface is when other conditions are the same.
Referring to fig. 2, fig. 2 is a schematic diagram illustrating variations of a duty ratio and a track speed in a duty ratio following mode according to a first embodiment of the present invention.
In the duty ratio following mode in this embodiment, the laser controller controls the pulse duty ratio of the laser based on the trajectory speed, so that the pulse duty ratio increases with the increase of the trajectory speed and decreases with the decrease of the trajectory speed, thereby ensuring uniform cutting of the processed material.
As can be seen from fig. 2, the duty ratio curves in the stages T-1 to T1 and T7 to T8 are higher than the trajectory speed curve, the duty ratio curves in the other stages are lower than the trajectory speed curve, the stages T0 to T2 are motion acceleration stages, the stages T2 to T3 are constant speed stages, the stages T3 to T5 are corner transition stages, the stages T5 to T6 are constant speed stages, and the stages T6 to T8 are motion deceleration stages, and the duty ratio values increase and decrease with the increase of the trajectory speed values and are kept constant when the trajectory speed values are constant, thereby ensuring the processing uniformity of the cut material.
As an embodiment, in order to enable the laser cutting to directly perform normal cutting when entering the formal cutting track, improve the efficiency of laser processing, and further make the processing uniform, the embodiment may further include a track position determining sub-step before step S20:
step S11: and determining that the distance between the track position of the laser and the track starting position is smaller than a preset distance threshold.
The preset distance threshold value can be specifically adjusted according to the processed material, the processing uniformity requirement and other conditions.
Step S12: the laser used to generate the laser light is activated.
Laser (Laser) refers to light amplified by stimulated radiation, and a Laser is a device that uses the principle of stimulated radiation to cause light to be amplified or emitted oscillatingly in certain excited substances. The laser in this embodiment may be a Q-switched laser, a CO2 laser, or other laser capable of generating high-energy laser light for laser cutting
The steps S11-S12 are to turn on the laser when the laser approaches the track starting position, so that the laser energy can be ensured to be rapidly increased when the laser reaches the track starting point, the time consumption of laser power adjustment is reduced, and the efficiency of the whole processing process is improved.
Further, when the laser cutting point reaches the initial position of the track needing laser cutting, the laser control method may further include the following sub-steps:
step S13: and determining the track position of the laser as the initial position of the track needing laser cutting.
Step S14: and adjusting the pulse duty ratio of the laser to a critical value capable of carrying out laser cutting.
In this embodiment, through the steps S13-S14, when the track start position needs to be cut, the pulse duty ratio of the laser is automatically adjusted to the critical value capable of performing laser cutting, so that the laser cutting can be performed quickly and directly, and the efficiency of laser processing is improved.
In one embodiment, the laser control method further turns off the duty ratio following mode when the track speed is less than the preset speed threshold, and controls the pulse duty ratio of the laser to be a preset constant threshold, as shown in stages T-1 to T1 and T7 to T8 in fig. 2.
According to the laser control method provided by the embodiment, the laser controller is used for controlling the pulse duty ratio of the laser to change along with the change of the track speed of the laser, meanwhile, the laser energy of the critical value capable of performing laser processing is forcibly output when the track speed is lower than the preset speed threshold, and the laser is started when the track speed is close to the track starting point, so that the laser processing efficiency and the processing uniformity are greatly improved.
Second embodiment
In order to cooperate with the laser control method provided in the first embodiment of the present invention, a laser control apparatus 100 is also provided in the second embodiment of the present invention.
Referring to fig. 3, fig. 3 is a schematic block diagram of a laser control apparatus according to an embodiment of the present invention.
The laser control apparatus 100 includes a speed determination module 120 and an output control module 140.
The speed determining module 120 is configured to determine whether a track speed during laser cutting is greater than a preset speed threshold.
And the output control module 140 is configured to, when the track speed is greater than the preset speed threshold, start a duty ratio following mode to control output energy of the laser, where in the duty ratio following mode, the pulse duty ratio of the laser is controlled based on the track speed.
As an embodiment, the laser control apparatus 100 may further include a pre-start module 110, and the pre-start module 110 includes: the distance judgment unit is used for determining that the distance between the track position of the laser and the track starting position is smaller than a preset distance threshold; and the laser starting unit is used for starting the laser for generating laser.
As an embodiment, the laser control apparatus 100 may further include a start control module 130, and the start control module 130 includes: the starting judgment unit is used for determining the track position of the laser as the starting position of the track needing laser cutting; and the critical value adjusting unit is used for adjusting the pulse duty ratio of the laser to a critical value capable of carrying out laser cutting.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the apparatus described above may refer to the corresponding process in the foregoing method, and will not be described in too much detail herein.
Third embodiment
Referring to fig. 4, fig. 4 is a block diagram of an electronic device applicable to the embodiment of the present application according to a third embodiment of the present invention. The electronic device 200 provided in this embodiment may include the laser control apparatus 100, a memory 201, a storage controller 202, a processor 203, a peripheral interface 204, an input/output unit 205, an audio unit 206, and a display unit 207.
The memory 201, the memory controller 202, the processor 203, the peripheral interface 204, the input/output unit 205, the audio unit 206, and the display unit 207 are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines. The laser control device 100 includes at least one software function module which can be stored in the memory 201 in the form of software or firmware (firmware) or solidified in an Operating System (OS) of the laser control device 100. The processor 203 is configured to execute executable modules stored in the memory 201, such as software functional modules or computer programs included in the laser control apparatus 100.
The Memory 201 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like. The memory 201 is used for storing a program, the processor 203 executes the program after receiving an execution instruction, and the method executed by the server defined by the flow process disclosed in any of the foregoing embodiments of the present invention may be applied to the processor 203, or implemented by the processor 203.
The processor 203 may be an integrated circuit chip having signal processing capabilities. The Processor 203 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor 203 may be any conventional processor or the like.
The peripheral interface 204 couples various input/output devices to the processor 203 as well as to the memory 201. In some embodiments, the peripheral interface 204, the processor 203, and the memory controller 202 may be implemented in a single chip. In other examples, they may be implemented separately from the individual chips.
The input and output unit 205 is used for providing input data for a user to realize the interaction of the user with the server (or the local terminal). The input/output unit 205 may be, but is not limited to, a mouse, a keyboard, and the like.
The audio unit 206 provides an audio interface to the user, which may include one or more microphones, one or more speakers, and audio circuitry.
The display unit 207 provides an interactive interface (e.g., a user operation interface) between the electronic device 200 and a user or is used to display image data for user reference. In this embodiment, the display unit 207 may be a liquid crystal display or a touch display. In the case of a touch display, the display can be a capacitive touch screen or a resistive touch screen, which supports single-point and multi-point touch operations. Supporting single-point and multi-point touch operations means that the touch display can sense touch operations from one or more locations on the touch display at the same time, and the sensed touch operations are sent to the processor 203 for calculation and processing.
It is to be understood that the configuration shown in fig. 4 is merely exemplary, and the electronic device 200 may include more or fewer components than shown in fig. 4, or may have a different configuration than shown in fig. 4. The components shown in fig. 4 may be implemented in hardware, software, or a combination thereof.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the apparatus described above may refer to the corresponding process in the foregoing method, and will not be described in too much detail herein.
In summary, the embodiments of the present invention provide a laser control method and apparatus, where when a laser controller controls energy output of laser, the laser control method controls intensity of the energy output of the laser according to a pulse duty ratio of the laser, so as to improve control accuracy of the laser; meanwhile, when the track speed is greater than the preset speed threshold, a duty ratio following mode is started to control the output energy of the laser, so that the laser controller adjusts the pulse duty ratio of the laser in real time according to the track speed, the requirement on the stability of the motion control speed in the laser processing process is reduced, and the processing efficiency and the processing effect are improved.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims (5)

1. A laser control method, comprising:
determining that the distance between the track position of the laser and the track starting position is smaller than a preset distance threshold;
starting a laser for generating laser light;
determining the track position of the laser as the track starting position needing laser cutting;
adjusting the pulse duty ratio of the laser to a critical value capable of carrying out laser cutting;
judging whether the track speed during the laser cutting is greater than a preset speed threshold value or not;
and if so, starting a duty ratio following mode to control the output energy of the laser, wherein in the duty ratio following mode, the pulse duty ratio is increased along with the increase of the track speed and is reduced along with the reduction of the track speed, and the pulse duty ratio of the laser is controlled based on the track speed when in the duty ratio following mode.
2. The laser control method according to claim 1, wherein after the determining whether the trajectory speed at the time of the laser cutting is greater than a preset speed threshold, the laser control method further comprises:
and when the track speed is smaller than the preset speed threshold, closing the duty ratio following mode, and controlling the pulse duty ratio of the laser to be a preset constant threshold.
3. A laser control apparatus, comprising:
a pre-boot module, the pre-boot module comprising:
the distance judgment unit is used for determining that the distance between the track position of the laser and the track starting position is smaller than a preset distance threshold;
a laser start unit for starting a laser for generating laser light;
an initiation control module, the initiation control module comprising:
the starting judgment unit is used for determining the track position of the laser as the track starting position needing laser cutting;
a critical value adjusting unit, configured to adjust a pulse duty ratio of the laser to a critical value at which laser cutting can be performed;
the speed judging module is used for judging whether the track speed during the laser cutting is greater than a preset speed threshold value or not;
and the output control module is used for starting a duty ratio following mode to control the output energy of the laser when the track speed is greater than the preset speed threshold, wherein in the duty ratio following mode, the pulse duty ratio is increased along with the increase of the track speed and is reduced along with the reduction of the track speed, and the pulse duty ratio of the laser is controlled based on the track speed in the duty ratio following mode.
4. The laser control device according to claim 3, further comprising a constant control module, wherein the constant control module is configured to turn off the duty following mode when the track speed is less than the preset speed threshold, and control a pulse duty of the laser to be a preset constant threshold.
5. A computer-readable storage medium having computer program instructions stored thereon which, when read and executed by a processor, perform the steps of the method of any of claims 1-2.
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CN106853557A (en) * 2015-12-09 2017-06-16 耘创九州智能装备有限公司 Laser cutting system and laser cutting method
CN207289169U (en) * 2017-09-04 2018-05-01 大族激光科技产业集团股份有限公司 A kind of laser Machining head heighten and pulse control unit, system and control box

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102873433A (en) * 2012-07-03 2013-01-16 广东技术师范学院 Method for predicting and setting wire feed speed of double-wire arc welding
CN106853557A (en) * 2015-12-09 2017-06-16 耘创九州智能装备有限公司 Laser cutting system and laser cutting method
CN207289169U (en) * 2017-09-04 2018-05-01 大族激光科技产业集团股份有限公司 A kind of laser Machining head heighten and pulse control unit, system and control box

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