CN102554478B - Control device and control method for power of high-speed laser - Google Patents
Control device and control method for power of high-speed laser Download PDFInfo
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- CN102554478B CN102554478B CN201110439826.4A CN201110439826A CN102554478B CN 102554478 B CN102554478 B CN 102554478B CN 201110439826 A CN201110439826 A CN 201110439826A CN 102554478 B CN102554478 B CN 102554478B
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Abstract
The invention relates to a control device and a control method for power of a high-speed laser. The control device comprises a single chip microcomputer control module, a machine tool injection power sampling module for acquiring machine tool injection power signals, a laser actual power sampling module for acquiring laser actual power signals, an analog-to-digital conversion module for analog-to-digital conversion of machine tool injection power signals and laser actual power signals and a feedback circuit. The single chip microcomputer control module is used for calculating regulating quantity of power by adopting proportion integration differentiation (PID) algorithm based on laser actual power signals and machine tool injection power signals after analog-to-digital conversion and sending the regulating quantity of power to the feedback circuit. The feedback circuit is used for regulating machine tool injection power signals based on the regulating quantity of power and obtaining laser power control signals after feedback. By adopting the control device, laser power of a laser can be stabilized, machine tool power signals can also be responded fast, and the laser can be led to provide stable laser power to a machine tool for cutting.
Description
Technical field
The present invention relates to laser process equipment technical field, more particularly, relate to a kind of high-speed laser output control device and method.
Background technology
In existing laser cutting application, laser instrument need to provide stable high power laser to cut and respond fast lathe power signal to lathe.But because of a variety of causes, comprise that air pressure shakiness, power decline etc., can cause the shakiness of laser power.
Because the energy of laser is provided by electric energy, so control the laser energy that power supply just can be stable, the namely fluctuation of laser power can make up by power supply.In the time carrying out lathe in cutting, require control circuit energy high speed, calculate the residual quantity between the realtime power of laser instrument and the injecting power of lathe fast, the Injection Current of time update power supply, makes the waveform of laser energy reach the waveform similarity of lathe injecting power.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, a kind of high-speed laser output control device and method are provided, its can stable laser laser power, can respond fast again lathe power signal, make laser instrument provide stable laser power to cut to lathe.
The technical solution adopted for the present invention to solve the technical problems is:
Construct a kind of high-speed laser output control device, comprise single chip control module, for gathering the lathe injecting power sampling module of lathe injecting power signal, for gathering the laser instrument actual power sampling module of laser instrument actual power signal, for described lathe injecting power signal and described laser instrument actual power signal are carried out to analog-to-digital analog-to-digital conversion module and feedback circuit; Wherein,
Described lathe injecting power sampling module and described laser instrument actual power sampling module are electrically connected with the input of described single chip control module by described analog-to-digital conversion module respectively;
Described single chip control module, for according to the described laser machine actual power signal after analog-to-digital conversion and described lathe injecting power signal, adopts the regulated quantity of pid algorithm rated output, and sends to described feedback circuit;
Described feedback circuit, for regulating described lathe injecting power signal is regulated according to the regulated quantity of described power, obtains the laser power control signal after feedback.
Control device of the present invention, wherein, described feedback circuit comprises:
The first lathe injecting power signal receiving unit, the lathe injecting power signal sending for receiving described lathe injecting power sampling module;
Regulated quantity receiving element, for receiving the regulated quantity of the power that described single chip control module sends;
Control signal computing unit, for calculating described laser power control signal according to described lathe injecting power signal and described regulated quantity;
Control signal output unit, for exporting described laser power control signal.
Control device of the present invention, wherein, described control signal computing unit comprises the first operational amplifier, the second operational amplifier and the digital regulation resistance that are connected in series; Wherein,
The in-phase input end of described the first operational amplifier accesses described lathe injecting power signal, and the reverse input end of described the first operational amplifier is connected with output, and the output of described the first operational amplifier is connected with described digital regulation resistance;
Described digital regulation resistance is connected with described regulated quantity receiving element, to regulate the position of tap terminals according to described regulated quantity;
The in-phase input end of described the second operational amplifier connects the tap terminals of described digital regulation resistance, and the reverse input end of described the second operational amplifier is connected with output, and the output of described the second operational amplifier is connected with described output unit.
Control device of the present invention, wherein, described single chip control module comprises: the second lathe injecting power signal receiving unit, laser instrument actual power signal receiving unit and regulated quantity computing unit; Wherein,
Described the second lathe injecting power signal receiving unit, the lathe injecting power signal sending for receiving described analog-to-digital conversion module;
Described laser instrument actual power signal receiving unit, the laser instrument actual power signal sending for receiving described analog-to-digital conversion module;
Described regulated quantity computing unit, for according to described laser machine actual power signal and described lathe injecting power signal, adopts the regulated quantity of pid algorithm rated output;
Regulated quantity output unit, for exporting described regulated quantity.
Control device of the present invention, wherein, described single chip control module also comprises: the tap position regulation unit being connected with described digital regulation resistance, for automatically regulate the position of described digital regulation resistance tap terminals according to described regulated quantity.
The present invention also provides a kind of high-speed laser Poewr control method, wherein, comprises step:
Gather lathe injecting power signal;
Gather laser instrument actual power signal;
Described lathe injecting power signal and described laser instrument actual power signal are carried out to analog-to-digital conversion;
According to the described laser machine actual power signal after analog-to-digital conversion and described lathe injecting power signal, adopt the regulated quantity of pid algorithm rated output;
Regulate described lathe injecting power signal is regulated according to the regulated quantity of described power, obtain the laser power control signal after feedback.
Control method of the present invention, wherein, described step regulates described lathe injecting power signal is regulated according to the regulated quantity of described power, and the laser power control signal obtaining after feedback specifically comprises:
Receive the lathe injecting power signal that described lathe injecting power sampling module sends;
Receive the regulated quantity of the power of described single chip control module transmission;
Calculate described laser power control signal according to described lathe injecting power signal and described regulated quantity;
Export described laser power control signal.
Control method of the present invention, wherein, described step calculates described laser power control signal according to described lathe injecting power signal and described regulated quantity and specifically comprises:
Employing comprises that the feedback circuit of the first operational amplifier, the second operational amplifier and digital regulation resistance calculates described laser power control signal; Wherein,
The in-phase input end of described the first operational amplifier accesses described lathe injecting power signal, and the reverse input end of described the first operational amplifier is connected with output, and the output of described the first operational amplifier is connected with described digital regulation resistance;
Described digital regulation resistance is connected with described regulated quantity receiving element, to regulate the position of tap terminals according to described regulated quantity;
The in-phase input end of described the second operational amplifier connects the tap terminals of described digital regulation resistance, and the reverse input end of described the second operational amplifier is connected with output, and the output of described the second operational amplifier is connected with described output unit.
Control method of the present invention, wherein, described step, according to the described laser machine actual power signal after analog-to-digital conversion and described lathe injecting power signal, adopts the regulated quantity of pid algorithm rated output specifically to comprise:
Receive the lathe injecting power signal that described analog-to-digital conversion module sends;
Receive the laser instrument actual power signal that described analog-to-digital conversion module sends;
According to described laser machine actual power signal and described lathe injecting power signal, adopt the regulated quantity of pid algorithm rated output;
Export described regulated quantity.
Control method of the present invention, wherein, described step, according to the described laser machine actual power signal after analog-to-digital conversion and described lathe injecting power signal, adopts the regulated quantity of pid algorithm rated output also to comprise: the position that automatically regulates described digital regulation resistance tap terminals according to described regulated quantity.
Beneficial effect of the present invention is: by adopt single chip control module according to the laser machine actual power signal after analog-to-digital conversion and lathe injecting power signal, adopt the regulated quantity of pid algorithm rated output, and send to feedback circuit; Regulate lathe injecting power signal is regulated according to the regulated quantity of power by feedback circuit again, obtain the laser power control signal after feedback, this laser power control signal is the signal of the laser power of correct control laser instrument, laser power that like this can stable laser, can respond fast again lathe power signal, make laser instrument provide stable laser power to cut to lathe.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the high-speed laser output control device theory diagram of preferred embodiment of the present invention;
Fig. 2 is feedback circuit theory diagram in the high-speed laser output control device of preferred embodiment of the present invention;
Fig. 3 is control signal computing unit circuit diagram in the high-speed laser output control device of preferred embodiment of the present invention;
Fig. 4 is single chip control module theory diagram in the high-speed laser output control device of preferred embodiment of the present invention.
Detailed description of the invention
The high-speed laser output control device theory diagram of preferred embodiment of the present invention as shown in Figure 1, comprises single chip control module 10, lathe injecting power sampling module 30, laser instrument actual power sampling module 40, analog-to-digital conversion module 20 and feedback circuit 50.Wherein, lathe injecting power sampling module 30 is for gathering lathe injecting power signal, laser instrument actual power sampling module 40 is for gathering laser instrument actual power signal, and analog-to-digital conversion module 20 is for carrying out analog-to-digital conversion to lathe injecting power signal and laser instrument actual power signal.Wherein, lathe injecting power sampling module 30 and laser instrument actual power sampling module 40 are electrically connected with the input of single chip control module 10 by analog-to-digital conversion module 20 respectively; Single chip control module 10 is for according to the laser machine actual power signal after analog-to-digital conversion and lathe injecting power signal, adoption rate integral differential (Proportion IntegrationDifferentiation, PID) regulated quantity of algorithm rated output, and send to feedback circuit 50; Feedback circuit 50, for regulating lathe injecting power signal is regulated according to the regulated quantity of power, obtains the laser power control signal after feedback.
When laser works, single chip control module 10 by above-mentioned control device receives laser machine actual power signal and the lathe injecting power signal after analog-to-digital conversion in real time, then use pid algorithm to calculate the regulated quantity of power, in advance regulated quantity is placed on feedback circuit 50, send to feedback circuit 50, to generate in real time above-mentioned laser power control signal, the laser power control signal obtaining is the signal of the laser power of correct control laser instrument, after can in advance regulated quantity being calculated by single chip control module 10, input to feedback circuit 50, therefore can realize the high-speed feedback of laser power, laser power that like this can stable laser, can respond fast again lathe power signal, make laser instrument provide stable laser power to cut to lathe.
In above-described embodiment, the size of lathe injecting power signal is generally to represent by the size of 0-10V voltage.Feedback circuit 50 is preferably made up of digital regulation resistance, and is in series with lathe injecting power signal, by the change of regulated quantity control figure potentiometer taper position, just can change lathe and be defeated by the voltage of laser instrument.
In a further embodiment, as shown in Figure 2, above-mentioned feedback circuit 50 comprises the first lathe injecting power signal receiving unit 51, regulated quantity receiving element 52, control signal computing unit 53 and control signal output unit 54.Wherein, the lathe injecting power signal that the first lathe injecting power signal receiving unit 51 sends for receiving lathe injecting power sampling module 30; Regulated quantity receiving element 52 is for the regulated quantity of the power that receives single chip control module 10 and send; Control signal computing unit 53 is for calculating laser power control signal according to lathe injecting power signal and regulated quantity; Control signal output unit 54, for output laser power control signal.Wherein, control signal computing unit 53 adopts the regulated quantity of pid algorithm rated output, pid algorithm is that ratio (P), integration (I) and the differential (D) in deviation controlled, it can be increment type PID algorithm, Position Form PID algorithm or differential forward PID algorithm, concrete computational process can, with reference to pid algorithm of the prior art, not repeat them here.Above-mentioned the first lathe injecting power signal receiving unit 51 and regulated quantity receiving element 52 can be circuit, can be also the input of single components and parts; Control signal output unit 54 can be concrete circuit, can be also the output of single components and parts.
In embodiment further, as shown in Figure 3, the control signal computing unit 53 of above-mentioned feedback circuit 50 comprises the first operational amplifier 531, the second operational amplifier 533 and digital current potential 532 devices that are connected in series.Wherein, the in-phase input end access lathe injecting power signal of the first operational amplifier 531, the reverse input end of the first operational amplifier 531 is connected with output, and the output of the first operational amplifier 531 is connected with digital regulation resistance 532; Digital regulation resistance 532 is connected with regulated quantity receiving element 52, to regulate the position of tap terminals according to regulated quantity; The in-phase input end of the second operational amplifier 533 connects the tap terminals of digital regulation resistance 532, and the reverse input end of the second operational amplifier 533 is connected with output, and the output of the second operational amplifier 533 is connected with output unit.The first lathe injecting power signal receiving unit 51 and regulated quantity receiving element 52 can be understood as the in-phase input end of above-mentioned the first operational amplifier 531; Control signal output unit 54 can be understood as the output of above-mentioned the second operational amplifier 533.
In above-mentioned feedback circuit, because digital regulation resistance 532 and lathe injecting power signal are in series, the position that therefore changes digital regulation resistance 532 tap terminals just can change the power of Output of laser.In the time that laser instrument actual power is higher, the position that single chip control module 10 is turned down tap terminals by the control of output regulated quantity, reduce to be linked into digital regulation resistance 532 resistance values in feedback circuit 50, magnitude of voltage corresponding to laser power control signal producing just diminishes, and the actual power of controlling laser instrument declines; In the time that laser instrument actual power is on the low side, single chip control module 10 is heightened the position of tap terminals by the control of output regulated quantity, increase digital regulation resistance 532 resistance values that are linked in feedback circuit 50, magnitude of voltage corresponding to laser power control signal producing just becomes large, and the actual power of controlling laser instrument rises.So just realize the feedback of laser power, reached the object of stable laser power.Because lathe injecting power signal and digital regulation resistance 532 are to be connected in series, can in advance regulated quantity be placed on feedback circuit 50, whenever having lathe injecting power signal when the feedback circuit 50, output be exactly the signal of the laser power of correct control laser instrument.Input is exactly the time delay of feedback circuit 50 with the time delay between exporting, and the time delay of feedback circuit is mainly from digital regulation resistance 532, and digital regulation resistance 532 is generally less than 200 microseconds to the time delay of signal, so just can realize the high-speed feedback of laser power.
In above-described embodiment, digital regulation resistance 532 is generally by digital control circuit, memory and RDAC the electric circuit constitute, wherein RDAC circuit is the important component part of digital regulation resistance, it is a kind of special D/A switch circuit, and the analog quantity that different from general digital/analog circuitry is after conversion is not magnitude of voltage but resistance value.The version difference of the digital regulation resistance digital control circuit of different model, but major function is all that the control signal of input is processed to rear control RDAC, nonvolatile memory is used for the tap position of storage control signal and potentiometer.In above-described embodiment, the digital regulation resistance preferably adopting is the AD5293BRUZ of ADI company, and its tap number is 1024, and its control signal is the regulated quantity signal that single chip control module 10 is exported.
Further, as shown in Figure 4, the single chip control module 10 in above-mentioned control device comprises: the second lathe injecting power signal receiving unit 11, laser instrument actual power signal receiving unit 12, regulated quantity computing unit 13 and regulated quantity output unit 14.Wherein, the lathe injecting power signal that the second lathe injecting power signal receiving unit 11 sends for receiving analog-to-digital conversion module 20; The laser instrument actual power signal that laser instrument actual power signal receiving unit 12 sends for receiving analog-to-digital conversion module 20; Regulated quantity computing unit 13, for according to laser machine actual power signal and lathe injecting power signal, adopts the regulated quantity of PI D-algorithm rated output; Regulated quantity output unit 14, for exporting regulated quantity.Wherein, the concrete calculating of regulated quantity computing unit 13 adopts the regulated quantity of pid algorithm rated output, pid algorithm is that ratio (P), integration (I) and the differential (D) in deviation controlled, it can be increment type PID algorithm, Position Form PID algorithm or differential forward PID algorithm, concrete computational process can, with reference to pid algorithm of the prior art, not repeat them here.
Further, above-mentioned single chip control module 10 also comprises the tap position regulation unit being connected with digital regulation resistance 532, for automatically regulate the position of digital regulation resistance 532 tap terminals according to regulated quantity.In the time that laser instrument actual power is higher, the position that tap terminals is turned down in the control of tap position regulation unit, reduce to be linked into the digital regulation resistance resistance value in feedback circuit, magnitude of voltage corresponding to laser power control signal producing just diminishes, and the actual power of controlling laser instrument declines; In the time that laser instrument actual power is on the low side, the position of tap terminals is heightened in the control of tap position regulation unit, increase the digital regulation resistance resistance value being linked in feedback circuit, magnitude of voltage corresponding to laser power control signal producing just becomes large, and the actual power of controlling laser instrument rises.So just realize the feedback of laser power, reached the object of stable laser power.
In another embodiment of the present invention, a kind of high-speed laser Poewr control method is also provided, it comprises step: gather lathe injecting power signal; Gather laser instrument actual power signal; Lathe injecting power signal and laser instrument actual power signal are carried out to analog-to-digital conversion; According to the laser machine actual power signal after analog-to-digital conversion and lathe injecting power signal, adopt the regulated quantity of pid algorithm rated output; Regulate lathe injecting power signal is regulated according to the regulated quantity of power, obtain the laser power control signal after feedback.When laser works, receive in real time laser machine actual power signal and the lathe injecting power signal after analog-to-digital conversion, then use pid algorithm to calculate the regulated quantity of power, can in advance regulated quantity be placed on feedback circuit, send to feedback circuit, to generate in real time above-mentioned laser power control signal, the laser power control signal obtaining is the signal of the laser power of correct control laser instrument, can realize the high-speed feedback of laser power, laser power that like this can stable laser, can respond fast again lathe power signal, make laser instrument provide stable laser power to cut to lathe.
Further, in the control method of above-described embodiment, regulate lathe injecting power signal is regulated according to the regulated quantity of power, the step that obtains the laser power control signal after feedback specifically comprises: receive the lathe injecting power signal that lathe injecting power sampling module sends; Receive the regulated quantity of the power of single chip control module transmission; Calculate laser power control signal according to lathe injecting power signal and regulated quantity; Output laser power control signal.
Further, in the control method of above-described embodiment, the step that calculates laser power control signal according to lathe injecting power signal and regulated quantity specifically comprises: adopt the feedback circuit that comprises the first operational amplifier, the second operational amplifier and digital regulation resistance to calculate laser power control signal.Wherein, as previously mentioned, refer to Fig. 3, the in-phase input end access lathe injecting power signal of the first operational amplifier 531, the reverse input end of the first operational amplifier 531 is connected with output, and the output of the first operational amplifier 531 is connected with digital regulation resistance 532; Digital regulation resistance 532 is connected with regulated quantity receiving element 52, to regulate the position of tap terminals according to regulated quantity; The in-phase input end of the second operational amplifier 533 connects the tap terminals of digital regulation resistance 532, and the reverse input end of the second operational amplifier 533 is connected with output, and the output of the second operational amplifier 533 is connected with output unit.Equally, because digital regulation resistance 532 and lathe injecting power signal are in series, the position that therefore changes digital regulation resistance 532 tap terminals just can change the power of Output of laser.Concrete control method refers to aforementioned each embodiment, does not repeat them here.
Further, in the control method of above-described embodiment, according to the laser machine actual power signal after analog-to-digital conversion and lathe injecting power signal, adopt the step of the regulated quantity of pid algorithm rated output specifically to comprise: to receive the lathe injecting power signal that analog-to-digital conversion module sends; Receive the laser instrument actual power signal that analog-to-digital conversion module sends; According to laser machine actual power signal and lathe injecting power signal, adopt the regulated quantity of pid algorithm rated output; Output regulated quantity.Wherein, the detailed process that adopts pid algorithm to carry out regulated quantity calculating can, with reference to pid algorithm of the prior art, not repeat them here.
Further, in the control method of above-described embodiment, according to the laser machine actual power signal after analog-to-digital conversion and lathe injecting power signal, adopt the step of the regulated quantity of pid algorithm rated output also to comprise: the position that automatically regulates digital regulation resistance tap terminals according to regulated quantity.Concrete adjustment process refers to aforementioned each embodiment, does not repeat them here.
To sum up, the present invention by adopt single chip control module according to the laser machine actual power signal after analog-to-digital conversion and lathe injecting power signal, adopt the regulated quantity of pid algorithm rated output, and send to feedback circuit; Regulate lathe injecting power signal is regulated according to the regulated quantity of power by feedback circuit again, obtain the laser power control signal after feedback, this laser power control signal is the signal of the laser power of correct control laser instrument, laser power that like this can stable laser, can respond fast again lathe power signal, make laser instrument provide stable laser power to cut to lathe.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (8)
1. a high-speed laser output control device, it is characterized in that, comprise single chip control module, for gathering the lathe injecting power sampling module of lathe injecting power signal, for gathering the laser instrument actual power sampling module of laser instrument actual power signal, for described lathe injecting power signal and described laser instrument actual power signal are carried out to analog-to-digital analog-to-digital conversion module and feedback circuit; Wherein,
Described lathe injecting power sampling module and described laser instrument actual power sampling module are electrically connected with the input of described single chip control module by described analog-to-digital conversion module respectively;
Described single chip control module, for according to the described laser machine actual power signal after analog-to-digital conversion and described lathe injecting power signal, adopts the regulated quantity of pid algorithm rated output, and sends to described feedback circuit;
Described feedback circuit, for regulating described lathe injecting power signal is regulated according to the regulated quantity of described power, obtains the laser power control signal after feedback;
Described feedback circuit comprises:
The first lathe injecting power signal receiving unit, the lathe injecting power signal sending for receiving described lathe injecting power sampling module;
Regulated quantity receiving element, for receiving the regulated quantity of the power that described single chip control module sends;
Control signal computing unit, for calculating described laser power control signal according to described lathe injecting power signal and described regulated quantity;
Control signal output unit, for exporting described laser power control signal.
2. control device according to claim 1, is characterized in that, described control signal computing unit comprises the first operational amplifier, the second operational amplifier and the digital regulation resistance that are connected in series; Wherein,
The in-phase input end of described the first operational amplifier accesses described lathe injecting power signal, and the reverse input end of described the first operational amplifier is connected with output, and the output of described the first operational amplifier is connected with described digital regulation resistance;
Described digital regulation resistance is connected with described regulated quantity receiving element, to regulate the position of tap terminals according to described regulated quantity;
The in-phase input end of described the second operational amplifier connects the tap terminals of described digital regulation resistance, and the reverse input end of described the second operational amplifier is connected with output, and the output of described the second operational amplifier is connected with described output unit.
3. control device according to claim 2, is characterized in that, described single chip control module comprises: the second lathe injecting power signal receiving unit, laser instrument actual power signal receiving unit and regulated quantity computing unit; Wherein,
Described the second lathe injecting power signal receiving unit, the lathe injecting power signal sending for receiving described analog-to-digital conversion module;
Described laser instrument actual power signal receiving unit, the laser instrument actual power signal sending for receiving described analog-to-digital conversion module;
Described regulated quantity computing unit, for according to described laser machine actual power signal and described lathe injecting power signal, adopts the regulated quantity of pid algorithm rated output;
Regulated quantity output unit, for exporting described regulated quantity.
4. control device according to claim 2, it is characterized in that, described single chip control module also comprises: the tap position regulation unit being connected with described digital regulation resistance, and for automatically regulate the position of described digital regulation resistance tap terminals according to described regulated quantity.
5. a high-speed laser Poewr control method, is characterized in that, comprises step:
Gather lathe injecting power signal;
Gather laser instrument actual power signal;
Described lathe injecting power signal and described laser instrument actual power signal are carried out to analog-to-digital conversion;
According to the described laser machine actual power signal after analog-to-digital conversion and described lathe injecting power signal, adopt the regulated quantity of pid algorithm rated output;
Regulate described lathe injecting power signal is regulated according to the regulated quantity of described power, obtain the laser power control signal after feedback;
The regulated quantity of described power regulates described lathe injecting power signal is regulated, and the laser power control signal obtaining after feedback specifically comprises:
Receive the lathe injecting power signal that described lathe injecting power sampling module sends;
Receive the regulated quantity of described employing pid algorithm rated output;
Calculate described laser power control signal according to described lathe injecting power signal and described regulated quantity;
Export described laser power control signal.
6. control method according to claim 5, is characterized in that, described step calculates described laser power control signal according to described lathe injecting power signal and described regulated quantity and specifically comprises:
Employing comprises that the feedback circuit of the first operational amplifier, the second operational amplifier and digital regulation resistance calculates described laser power control signal; Wherein,
The in-phase input end of described the first operational amplifier accesses described lathe injecting power signal, and the reverse input end of described the first operational amplifier is connected with output, and the output of described the first operational amplifier is connected with described digital regulation resistance;
Described digital regulation resistance is connected with described regulated quantity receiving element, to regulate the position of tap terminals according to described regulated quantity;
The in-phase input end of described the second operational amplifier connects the tap terminals of described digital regulation resistance, and the reverse input end of described the second operational amplifier is connected with output, and the output of described the second operational amplifier is connected with described output unit.
7. control method according to claim 6, is characterized in that, described step, according to the described laser machine actual power signal after analog-to-digital conversion and described lathe injecting power signal, adopts the regulated quantity of pid algorithm rated output specifically to comprise:
Receive the lathe injecting power signal that described analog-to-digital conversion module sends;
Receive the laser instrument actual power signal that described analog-to-digital conversion module sends;
According to described laser machine actual power signal and described lathe injecting power signal, adopt the regulated quantity of pid algorithm rated output;
Export described regulated quantity.
8. control method according to claim 7, it is characterized in that, described step, according to the described laser machine actual power signal after analog-to-digital conversion and described lathe injecting power signal, adopts the regulated quantity of pid algorithm rated output also to comprise: the position that automatically regulates described digital regulation resistance tap terminals according to described regulated quantity.
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| CN103157910B (en) * | 2013-02-04 | 2016-06-29 | 大族激光科技产业集团股份有限公司 | The method and system of display laser power |
| CN106129794B (en) * | 2016-09-05 | 2019-03-19 | 吉林大学 | A kind of high stability laser beam generating circuit based on PID control |
| CN106207730B (en) * | 2016-09-05 | 2019-04-05 | 吉林大学 | A kind of high stability laser pumping source with overheat protection function |
| CN109507874B (en) * | 2018-12-21 | 2022-03-18 | 哈尔滨工程大学 | Method for improving power stability of erbium-doped fiber light source |
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| CN102554478A (en) | 2012-07-11 |
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