CN108054628B - Control system, laser, the equipment with laser of laser - Google Patents
Control system, laser, the equipment with laser of laser Download PDFInfo
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- CN108054628B CN108054628B CN201711281548.8A CN201711281548A CN108054628B CN 108054628 B CN108054628 B CN 108054628B CN 201711281548 A CN201711281548 A CN 201711281548A CN 108054628 B CN108054628 B CN 108054628B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
Abstract
The present embodiments relate to field of laser device technology, disclose control system, laser, the equipment with laser of laser.The control system of the laser includes the level-one light path control module for controlling the level-one optical path operating current of level-one pumping source, the level-one optical path configuration module for configuring the level-one optical path operating current, the second level optical path control module of the second level optical path operating current for controlling diode pumping source, the second level optical path configuration module and processing module of quota operating current for configuring diode pumping source；The level-one optical path operating current that the processing module is configured according to the level-one optical path configuration module sends level-one optical path operating current control signal to the level-one light path control module；The processing module and the second level optical path configuration module configure the quota operating current controlled by the second level optical path control module jointly.The control system of laser disclosed by the embodiments of the present invention is conducive to expand the application of low-power laser.
Description
Technical field
Technical solution disclosed by the embodiments of the present invention is related to the control system of field of laser device technology more particularly to laser
System, laser, the equipment with laser.
Background technique
Currently, the application range of low-power laser is increasing.Usual small-power Q adjusting optical fiber laser be not suitable for using
Excessively complicated control system, can especially seriously affect when the control system of low-power laser operates excessively cumbersome
The application of low-power laser.
Inventor has found that the control system of low-power laser is excessively multiple in the prior art during studying the present invention
It is miscellaneous.
Summary of the invention
Technical solution disclosed by the invention is at least able to solve following technical problem: the control system mistake of low-power laser
In complexity.
One or more embodiment of the invention discloses a kind of control system of laser, including for controlling level-one
Level-one light path control module, the level-one for configuring the level-one optical path operating current of the level-one optical path operating current of pumping source
Optical path configuration module, the second level optical path control module of second level optical path operating current for controlling diode pumping source, for configuring
The second level optical path configuration module and processing module of the quota operating current in diode pumping source；The processing module is according to described one
The level-one optical path operating current of grade optical path configuration module configuration sends level-one optical path work to the level-one light path control module
Make current controling signal；The processing module and the second level optical path configuration module are configured jointly by the second level light path control mould
The quota operating current of block control.
In one or more embodiment of the invention, the processing module and the second level optical path configuration module are common
Configure the quota operating current controlled by the second level optical path control module specifically: the maximum electricity of processing module output
Working signal is flowed, the second level optical path configuration module adjusts the maximum current working signal to change the maximum current work
The corresponding real work electric current of signal, so that the second level optical path control module controls diode pumping source with quota work electricity
Flow work.
In one or more embodiment of the invention, the processing module in the form of circuit or communication with it is upper
Machine is connected, and when receiving the power signal that the host computer issues, the processing module changes the maximum current work letter
Number assignment, and then change diode pumping source real work electric current so that laser output laser power and the power
Signal is adapted.
In one or more embodiment of the invention, further include for detection laser inside temperature and laser
The detection module for going out light situation of device；When the detection module detects that the temperature inside laser is higher than the first temperature threshold
Or the temperature inside laser is when being lower than second temperature threshold value, the processing module control the level-one light path control module and
The power supply of the second level optical path control module cutting laser；When the detection module detects that the temperature inside laser drops to
When temperature when lower than third temperature threshold or inside laser rises above four temperature thresholds, the processing module control
The level-one light path control module and the second level optical path control module restore the power supply of laser；First temperature threshold > third
Temperature threshold > four temperature thresholds > second temperature threshold value.
In one or more embodiment of the invention, under the idle state of laser, the detection module inspection
It measures and adds up laser lasting duration when having laser in the optical path of laser, when the lasting duration of the laser is more than at the first time
The processing module issues alarm signal and alarms when threshold value, when the lasting duration of the laser is not above described first
Between threshold value when the duration lasting to the accumulative laser reset；In the state of laser works, the detection module is being examined
The duration for adding up not having laser lasting in optical path when having laser in the optical path of laser is not detected, when described lasting without laser
The processing module issues alarm signal and alarms when duration is more than second time threshold, when described lasting without laser
The accumulative duration lasting without laser is reset when length is not above second time threshold.
In one or more embodiment of the invention, the detection module further includes the work for detection laser
The detection unit of electric current；Under the idle state of laser, when the detection unit detects that the operating current is greater than the
The processing module issues alarm signal and alarms when one operating current threshold value；In the state of laser works, when described
Detection unit detects that the processing module issues alarm signal progress when the operating current is greater than the second work electricity value threshold value
Alarm, second working current value are greater than the quota operating current.
In one or more embodiment of the invention, the level-one optical path configuration module is specially toggle switch, is led to
Cross the level-one optical path operating current that the toggle switch selects level-one pumping source out of preset level-one optical path current margin.
In one or more embodiment of the invention, the toggle switch includes one or more switch position, often
A switch position includes two dial-up positions, and the dial-up position of one or more of switch positions is converted to a binary system
Number is transferred to the processing module, and a binary number represents a level-one optical path operating current of level-one pumping source.
One or more embodiment of the invention also discloses a kind of laser, and the laser includes above-mentioned any one
The control system of kind laser.
One or more embodiment of the invention also discloses a kind of equipment with laser, described to have laser
Equipment include any one of the above laser control system.
Compared with prior art, technical solution disclosed by the invention mainly have it is following the utility model has the advantages that
In an embodiment of the present invention, the control system of the laser includes the level-one light path control module, institute
State level-one optical path configuration module, the second level optical path control module, the second level optical path configuration module and the processing module.
The level-one optical path operating current of level-one pumping source can be configured by the level-one optical path configuration module and the processing module, and
Level-one optical path operating current control signal, which is sent, to the level-one light path control module by the processing module makes laser
Level-one pumping source according to the level-one optical path operating current of configuration work.It is configured by the processing module and the second level optical path
Module configures the quota operating current in the diode pumping source by second level optical path control module control jointly, and passes through described two
The second level optical path operating current in grade light path control module control diode pumping source.The control system of the laser not only can be with
For controlling level-one optical path operating current and second level optical path operating current, and it can be used for configuring the level-one light of level-one pumping source
The quota operating current of road operating current and diode pumping source.The control system control of the laser is compared with the existing technology
In control system for construction it is simple with control process, the control of laser complexity is realized in relatively inexpensive mode
Journey.
Detailed description of the invention
Fig. 1 is the schematic diagram of the control system of laser in one embodiment of the invention；
Fig. 2 is the schematic diagram of the control system of laser in another embodiment of the present invention；
Fig. 3 is the schematic diagram of detection module in another embodiment of the present invention；
Fig. 4 is the schematic diagram of detection module in another embodiment of the present invention；
Fig. 5 is the schematic diagram of toggle switch in another embodiment of the present invention.
Description of symbols:
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more thorough
Comprehensively.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Claims of the present invention, specification and Figure of description
In term " first ", " second ", " third ", " the 4th " etc. be for distinguishing different objects, rather than it is specific suitable for describing
Sequence.
One embodiment of the invention discloses a kind of control system of laser, below by specific embodiment to of the invention
Technical solution is illustrated, and the control system for the laser being related in specific embodiment is preferred embodiment, not
The all possible embodiment of the present invention.The control system for the laser that various embodiments of the present invention are related to is with optical fiber laser
Basis.
It is the schematic diagram of the control system of laser in one embodiment of the invention with reference to Fig. 1.It anticipates as shown in fig. 1,
The control system of the laser includes: the level-one light path control for controlling the level-one optical path operating current of level-one pumping source
Module 1, the level-one optical path configuration module 2, two for controlling diode pumping source for configuring the level-one optical path operating current
Second level optical path control module 3, the second level optical path of quota operating current for configuring diode pumping source of grade optical path operating current
Configuration module 4 and processing module 5；The level-one light that the processing module 5 is configured according to the level-one optical path configuration module 2
Road operating current sends level-one optical path operating current to the level-one light path control module 1 and controls signal；5 He of processing module
The second level optical path configuration module 4 configures the quota operating current controlled by the second level optical path control module 3 jointly.
The control system of laser in above-described embodiment includes the level-one light path control module 1, the level-one optical path
Configuration module 2, the second level optical path control module 3, the second level optical path configuration module 4 and the processing module 5.Pass through institute
The level-one optical path operating current of level-one pumping source can be configured by stating level-one optical path configuration module 2 and the processing module 5, and be passed through
The processing module 5 sends level-one optical path operating current control signal to the level-one light path control module 1 and makes laser
Level-one pumping source works according to the level-one optical path operating current of configuration.Pass through the processing module 5 and the second level optical path
Configuration module 4 configures the quota operating current in the diode pumping source controlled by the second level optical path control module 3 jointly, and passes through
The second level optical path control module 3 controls the second level optical path operating current in diode pumping source.Laser in above-described embodiment
Control system can be not only used for control level-one optical path operating current and second level optical path operating current, and can be used for configuring one
The grade level-one optical path operating current of pumping source and the quota operating current in diode pumping source.The control system control of the laser
Construction is simple with control process for making the control system in compared with the existing technology, realizes laser in relatively inexpensive mode
The control process of device complexity.
Optical fiber and laser for being used due to laser etc. are had differences, and each laser needs to configure
The level-one optical path operating current of level-one pumping source be different.In an embodiment of the present invention, the level-one of level-one pumping source
Optical path operating current can be only fitted in certain range, be made of one group of current value.For example, the level-one optical path of level-one pumping source
The range of operating current is 2A~4A, and 2A~4A can be divided into 12 parts, and the corresponding current value of all Along ents then constitutes one
The level-one optical path operating current of group level-one pumping source, and the level-one optical path operating current of this group of level-one pumping source can be solidified
To the processing module 5, configured by the level-one optical path configuration module 2.
In an embodiment of the present invention, the level-one optical path of the laser includes level-one pumping source, level-one bundling device, level-one
Amplifier and level-one optoisolator.The second level optical path of the laser includes diode pumping optical fiber, diode pumping source, second level conjunction
Beam device and second level passive fiber.The level-one pumping source and the diode pumping source are respectively by one or more pumping source structure
At.
It is the schematic diagram of the control system of laser in another embodiment of the present invention with reference to Fig. 2.Meaning as shown in Figure 2
, the control system of the laser includes: level-one light path control module 10, the level-one optical path configuration module 20, described
Second level optical path control module 30, the second level optical path configuration module 40, the processing module 50 and detection module 60.Wherein,
The level-one light path control module 10, the level-one optical path configuration module 20, the second level optical path control module 30, the second level
The function of control system of laser of illustrating in optical path configuration module 40 and the processing module 50 and Fig. 1 is identical, described
Out light situation of the detection module 60 for temperature and laser inside detection laser.When the detection module 60 detects
It is described when temperature when temperature inside laser is higher than the first temperature threshold or inside laser is lower than second temperature threshold value
Processing module 50 controls the power supply of the level-one light path control module 10 and the second level optical path control module 30 cutting laser；
When the detection module 60 detects that the temperature inside laser falls below third temperature threshold or inside laser
When temperature rises above four temperature thresholds, the processing module 50 controls the level-one light path control module 10 and the second level
The power supply of the recovery laser of light path control module 30；The 4th temperature threshold > second of first temperature threshold > third temperature threshold >
Temperature threshold.For example, first temperature threshold is 60 DEG C, the second temperature threshold value is 5 DEG C, and the third temperature threshold is
55 DEG C, the 4th temperature threshold is 10 DEG C.5 DEG C are differed between first temperature threshold and the third temperature threshold, with
And 5 DEG C are differed between the second temperature threshold value and the 4th temperature threshold, it is beneficial to prevent the temperature inside laser and becomes
Laser is frequently closed and is opened during change.
Under the idle state of laser, the detection module 60 detects in the optical path of laser to be added up when having laser
The lasting duration of laser, when the lasting duration of the laser is more than first time threshold, the processing module 50 issues alarm signal
It number alarms, the accumulative laser is continued when the lasting duration of the laser is not above the first time threshold
Duration reset；In the state of laser works, the detection module 60 has laser in the optical path that can't detect laser
When accumulative optical path in there is no laser lasting duration, when the duration lasting without laser is more than second time threshold described in
Processing module 50 issues alarm signal and alarms, when the duration lasting without laser is not above second time threshold
The accumulative duration lasting without laser is reset.
In a kind of possible embodiment of the invention, the processing module 50 exports maximum current working signal, institute
Stating second level optical path configuration module 40, to adjust the maximum current working signal corresponding to change the maximum current working signal
Real work electric current, so that the second level optical path control module 30 controls diode pumping source with the work of quota operating current.Pass through
The above process, the processing module 50 and the second level optical path configuration module 40 are configured by the second level optical path control module jointly
The quota operating current in the diode pumping source of 30 controls.
In a kind of possible embodiment of the invention, the processing module 50 in the form of circuit or communication with it is upper
Position machine is connected, and when receiving the power signal that the host computer issues, the processing module 50 changes the maximum current work
Make the assignment of signal, and then change the real work electric current in diode pumping source so that the laser power of laser output with it is described
Power signal is adapted.Since there are one for the assignment and the real work electric current in diode pumping source of the maximum current working signal
One-to-one correspondence, thus when the maximum current working signal assignment change when diode pumping source real work electric current
It will change, such as when the maximum laser power that the laser power of the corresponding diode pumping source output of the power signal is output
50%, then it can change the real work electric current in diode pumping source by changing the assignment of the maximum current working signal,
And then the laser power of laser output is become maximum the 50% of laser power.
It is the schematic diagram of detection module 60 in another embodiment of the present invention with reference to Fig. 3.It anticipates as shown in Figure 3, it is described
Detection module 60 includes temperature inductor 61 and laser inductor 62, and the temperature inductor 61 is for inside detection laser
Temperature, the laser inductor 62 go out light situation for detection laser.Laser inductor 62 is specially photodiode
(Photo-Diode)。
It is the schematic diagram of detection module 600 in another embodiment of the present invention with reference to Fig. 4.As schematically shown in figure 4, institute
Stating detection module 600 includes: temperature inductor 601, laser inductor 602 and detection unit 603, the temperature inductor 61
For the temperature inside detection laser, the laser inductor 62 goes out light situation for detection laser.The detection is single
Member 603 is used for the operating current of detection laser.Under the idle state of laser, when the detection unit 603 detects
The processing module 50 issues alarm signal and alarms when the operating current is greater than the first operating current threshold value；In laser
In the state of work, the place when the detection unit 603 detects that the operating current is greater than the second work electricity value threshold value
Reason module 50 issues alarm signal and alarms, and second working current value is greater than the quota operating current.
In a kind of possible embodiment of the invention, the level-one optical path configuration module 20 is specially toggle switch
21, the primary pump is selected out of preset level-one pumping source level-one optical path current margin by the toggle switch 21
The level-one optical path operating current in Pu source.The toggle switch 21 includes one or more switch position, each switch position packet
Two dial-up positions are included, the dial-up position of one or more of switch positions is converted to a binary number and is transferred to the place
Module 50 is managed, a binary number represents a level-one optical path operating current of level-one pumping source.It is this hair with reference to Fig. 5
The schematic diagram of toggle switch 21 in bright another embodiment.It anticipates as shown in Figure 5, toggle switch 21 includes four switch positions,
Each switch position includes two dial-up positions, and wherein dial-up position H represents high level, and dial-up position L represents low level, the place
Reason module 50 can represent low and high level, therefore the dial-up position of the toggle switch 21 4 switch positions with binary number 1 and 0
It is converted to a binary number and is transferred to the processing module 50.Due to the low and high level of the toggle switch 21 4 switch positions
Multiple binary numbers can be converted to, therefore the level-one optical path work of multiple level-one pumping sources can be represented with multiple binary numbers
Electric current.The dial-up position of four switch positions of the toggle switch 21 is exported multiple binary numbers, is used by permutation and combination method
Family can obtain a kind of binary number of combination representative of dial-up position of four switches position by tabling look-up.
One embodiment of the invention discloses a kind of laser, and the laser includes the control of any one of the above laser
System.
One embodiment of the invention discloses a kind of equipment with laser, and the equipment with laser includes above-mentioned
The control system of any one laser.Equipment with laser can be laser marking machine, laser cutting machine, body laser inner carving
Machine or laser-beam welding machine etc..
When the technical solution in above-mentioned each embodiment uses software realization, above-mentioned each embodiment can will be realized
Computer instruction and/or data storage in computer-readable medium or as on readable medium one or more instructions or
Code is transmitted.Computer-readable medium includes computer storage media and communication media, and wherein communication media includes being convenient for
From a place to any medium of another place transmission computer program.Storage medium can be what computer can store
Any usable medium.As example but not limited to this: computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or
Other optical disc storages, magnetic disk storage medium or other magnetic storage apparatus or can carry or store with instruction or data
The desired program code of structure type simultaneously can be by any other medium of computer access.In addition, any connection can fit
When become computer-readable medium.For example, if software is using coaxial cable, light pricker optical cable, twisted pair, Digital Subscriber Line
(DSL) either the wireless technology of such as infrared ray, radio and microwave etc is transmitted from website, server or other remote sources
, then the wireless technology packet of coaxial cable, optical fiber cable, twisted pair, DSL or such as infrared ray, wireless and microwave etc
It includes in the definition of affiliated medium.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the application, rather than its limitations.Although
The application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
And these are modified or replaceed, each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of control system of laser characterized by comprising the level-one optical path for controlling level-one pumping source works electric
The level-one light path control module of stream, the level-one optical path configuration module for configuring the level-one optical path operating current, for controlling
The second level optical path control module of the second level optical path operating current in diode pumping source, the quota for configuring diode pumping source work electric
The second level optical path configuration module and processing module of stream；The institute that the processing module is configured according to the level-one optical path configuration module
It states level-one optical path operating current and sends level-one optical path operating current control signal to the level-one light path control module；The processing
Module and the second level optical path configuration module configure the quota work electricity by second level optical path control module control jointly
Stream.
2. the control system of laser according to claim 1, which is characterized in that the processing module and the secondary light
Road configuration module configures the quota operating current controlled by the second level optical path control module jointly specifically: the processing
Module exports maximum current working signal, and the second level optical path configuration module adjusts the maximum current working signal to change
State the corresponding real work electric current of maximum current working signal so that the second level optical path control module control diode pumping source with
The quota operating current work.
3. the control system of laser according to claim 2, which is characterized in that the processing module is with circuit or leads to
The form of letter is connected with host computer, when receiving the power signal that the host computer issues, described in the processing module change
The assignment of maximum current working signal, and then change the real work electric current in diode pumping source, so that the laser of laser output
Power and the power signal are adapted.
4. the control system of laser according to claim 1, which is characterized in that further include for inside detection laser
Temperature and laser go out light situation detection module；When the detection module detects that the temperature inside laser is higher than
When temperature when the first temperature threshold or inside laser is lower than second temperature threshold value, the processing module controls the level-one
The power supply of light path control module and second level optical path control module cutting laser；When the detection module detects laser
When temperature when internal temperature falls below third temperature threshold or inside laser rises above four temperature thresholds, institute
State the power supply that processing module controls the level-one light path control module and the second level optical path control module restores laser；First
Temperature threshold > third temperature threshold > four temperature thresholds > second temperature threshold value.
5. the control system of laser according to claim 4, which is characterized in that under the idle state of laser,
The detection module, which detects, adds up laser lasting duration when having laser in the optical path of laser, when the laser is lasting
The processing module issues alarm signal and alarms when length is more than first time threshold, when the lasting duration of the laser does not have
The duration lasting to the accumulative laser is reset when more than the first time threshold；In the state of laser works, institute
State detection module has the duration for adding up not having laser lasting in optical path when laser in the optical path that can't detect laser, when described
The processing module issues alarm signal and alarms when the duration for not having laser lasting is more than second time threshold, does not have when described
The accumulative duration lasting without laser is reset when the duration for having laser lasting is not above second time threshold.
6. the control system of laser according to claim 5, which is characterized in that the detection module further includes for examining
Survey the detection unit of the operating current of laser；Under the idle state of laser, when the detection unit detect it is described
The processing module issues alarm signal and alarms when operating current is greater than the first operating current threshold value；In laser works
Under state, when the detection unit detects that the operating current is greater than the second work electricity value threshold value, the processing module is issued
Alarm signal is alarmed, and second working current value is greater than the quota operating current.
7. the control system of laser according to claim 1, which is characterized in that the level-one optical path configuration module is specific
For toggle switch, the level-one of level-one pumping source is selected out of preset level-one optical path current margin by the toggle switch
Optical path operating current.
8. the control system of laser according to claim 7, which is characterized in that the toggle switch include one or
Multiple switch position, each switch position include two dial-up positions, and the dial-up position of one or more of switch positions turns
It is changed to a binary number and is transferred to the processing module, a binary number represents a level-one light of level-one pumping source
Road operating current.
9. a kind of laser, which is characterized in that the control system including laser described in claim 1 to 8 any one.
10. a kind of equipment with laser, which is characterized in that including laser described in claim 1 to 8 any one
Control system.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711281548.8A CN108054628B (en) | 2017-12-05 | 2017-12-05 | Control system, laser, the equipment with laser of laser |
| PCT/CN2018/117638 WO2019109832A1 (en) | 2017-12-05 | 2018-11-27 | Control system for laser, laser, and device with laser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711281548.8A CN108054628B (en) | 2017-12-05 | 2017-12-05 | Control system, laser, the equipment with laser of laser |
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| CN108054628B true CN108054628B (en) | 2019-03-19 |
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| CN109088303B (en) * | 2018-08-23 | 2020-03-31 | 深圳市创鑫激光股份有限公司 | Method and device for adjusting output power of pulse laser and pulse laser |
| CN111106520A (en) * | 2019-11-28 | 2020-05-05 | 北京科益虹源光电技术有限公司 | 355nm laser |
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| CN1270212C (en) * | 2002-09-16 | 2006-08-16 | 烽火通信科技股份有限公司 | Distributed Raman amplification subsystem and device |
| DE102012213670A1 (en) * | 2012-08-02 | 2014-05-22 | Bayerische Motoren Werke Aktiengesellschaft | Control device for driving a laser diode |
| CN106299992B (en) * | 2015-05-20 | 2019-11-12 | 南京中兴新软件有限责任公司 | Fiber amplifier gain control method and device |
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|---|---|---|---|---|
| CN1286413A (en) * | 1999-08-25 | 2001-03-07 | 朗迅科技公司 | Quick gain control of light amplifier |
| CN1426616A (en) * | 2000-04-29 | 2003-06-25 | 康宁股份有限公司 | Universal controller for optical amplifier |
| CN106207730A (en) * | 2016-09-05 | 2016-12-07 | 吉林大学 | A kind of high stability laser pumping source with overheat protection function |
| CN107302180A (en) * | 2017-06-13 | 2017-10-27 | 北京大学 | Automatic decision simultaneously sets laser frequency and the control system and its control method of power |
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| Publication number | Publication date |
|---|---|
| WO2019109832A1 (en) | 2019-06-13 |
| CN108054628A (en) | 2018-05-18 |
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