CN108880276A - Yarn storage device controller - Google Patents
Yarn storage device controller Download PDFInfo
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- CN108880276A CN108880276A CN201710318130.3A CN201710318130A CN108880276A CN 108880276 A CN108880276 A CN 108880276A CN 201710318130 A CN201710318130 A CN 201710318130A CN 108880276 A CN108880276 A CN 108880276A
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- Prior art keywords
- voltage
- storage device
- yarn storage
- control circuit
- inverter
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- 238000001514 detection method Methods 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 3
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 230000009466 transformation Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000009940 knitting Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000009954 braiding Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
- D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
- D04B35/14—Indicating, warning, or safety devices, e.g. stop motions responsive to thread breakage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0822—Integrated protection, motor control centres
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/10—Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
- H02P27/085—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation wherein the PWM mode is adapted on the running conditions of the motor, e.g. the switching frequency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
The present invention provides a kind of yarn storage device controller, by industrial frequency AC input voltage it is rectified after become DC voltage, after DC-DC converter output multi-channel be isolated DC voltage, including inverter busbar voltage and control voltage.Wherein busbar voltage exports PWM voltage through H bridge inverter as the power supply of yarn storage device motor, controls voltage as the power supply of controller internal circuit, while control circuit output pwm signal controls inverter.The yarn storage device controller based on inversion transformation technique that this programme proposes can save Industrial Frequency Transformer and run as autonomous system, and integrated level is higher, simplify system composition, reduce system cost.And external direct current power supply is not needed as controller power supply, save decorrelation power cable.
Description
Technical field
The present invention relates to yarn storage device control technology more particularly to a kind of yarn storage device controllers, belong to Knitting Machinery technology neck
Domain.
Background technique
Straight-bar machines yarn storage device has one group of powerful motor, and yarn is pulled out from tube, is then regularly wrapped in yarn storage device
On yarn storage wheel.When straight-bar machines, which is worked out, to be operated, knitting needle or other elements can sequentially take out yarn from yarn storage wheel.Yarn storage device is applicable in
In flat knitting machine and the tricot machine for thering is weft yarn to feed, any irregular intermittent yarn consumption is supplied.
Yarn storage device uses single-phase asynchronous motor, is internally integrated start-up capacitance, applies single-phase AC voltage to machine winding, around
Group phase current is that motor operating can be realized in sine wave.Current implementation is all made of Industrial Frequency Transformer as the confession of yarn storage device motor
Electricity.
Existing yarn storage device control program is shown in that Fig. 1, Fig. 1 are yarn storage device controller circuitry figure in the related technology.Such as Fig. 1 institute
Show, the power supply of yarn storage device motor is individually for using Industrial Frequency Transformer in the prior art, transformer and controller is needed to be used cooperatively.Together
When, yarn storage device controller needs independent external direct current power supply power supply.Since Industrial Frequency Transformer volume is big, quality weight, be unfavorable for
Yarn storage device controller collection is at installation arranged apart and can only needing back panel wiring, installation footprint is big and inconvenient.
Summary of the invention
The embodiment of the present invention provides a kind of yarn storage device controller, can simplify system composition, reduces system cost, and be not required to
Want external direct current power supply for controller power supply.
Yarn storage device controller provided in an embodiment of the present invention, including rectifier bridge, direct current (Direct Current, DC)-DC
Converter, inverter and control circuit；Wherein, the rectifier bridge is used to the power frequency ac voltage of input being converted to direct current
Pressure；The DC-DC converter is used to be converted to the DC voltage that the rectifier bridge exports the first voltage and the of two-way isolation
Two voltages, the first voltage are converted to pulse width modulation (Pulse Width Modulation, PWM) through the inverter
For powering for yarn storage device motor after voltage, the second voltage is used to power for the control circuit；The control circuit is used
The pwm signal of the inverter is controlled in output.
It in one embodiment of this invention, further include central processing unit (Central Processing Unit, CPU) mould
Block, the CPU module are used to provide control instruction for the control circuit.
In one embodiment of this invention, above-mentioned CPU module includes parameter set unit, and the parameter set unit is used for
The amplitude and frequency of the PWM voltage are set.
In one embodiment of this invention, be also connected between above-mentioned yarn storage device motor and the output end of the inverter after
Electric appliance, the control circuit are also used to control the relay.
It in one embodiment of this invention, further include broken yarn detection module, the broken yarn detection module is described for detecting
The output end of broken yarn information on yarn storage device yarn storage wheel, the broken yarn detection module is connect with the control circuit.
It in one embodiment of this invention, further include over-current detection module, the over-current detection module is described for detecting
The output end of the input current of yarn storage device motor, the over-current detection module is connect with the control circuit.
In one embodiment of this invention, above-mentioned inverter is H bridge inverter.
Based on above-mentioned, yarn storage device controller provided in an embodiment of the present invention, by the rectified rear change of industrial frequency AC input voltage
For DC voltage, the DC voltage that output multi-channel is isolated after DC-DC converter, including inverter busbar voltage and control electricity
Pressure.Wherein busbar voltage exports PWM voltage through H bridge inverter as the power supply of yarn storage device motor, and control voltage is electricity inside controller
Road power supply, while control circuit output pwm signal controls inverter.The yarn storage device control based on inversion transformation technique that this programme proposes
Device can save Industrial Frequency Transformer and run as autonomous system, and integrated level is higher, simplify system composition, reduce system cost.
And external direct current power supply is not needed as controller power supply, save decorrelation power cable.
Further, the yarn storage device controller based on inversion transformation technique that this programme proposes, can cooperate different modulation methods
Formula is arranged output voltage and frequency by software parameter, yarn storage device motor VVVF speed regulation may be implemented, meet different braidings
Yarn consumption is fed in time on yarn storage wheel when speed, reduces yarn storage device motor frequent start-stop action frequency.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the present invention or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is of the invention one
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is yarn storage device controller circuitry figure in the related technology；
Fig. 2 is yarn storage device controller circuitry schematic diagram provided in an embodiment of the present invention；
Fig. 3 is yarn storage device controller circuitry schematic diagram provided in an embodiment of the present invention；
Fig. 4 is yarn storage device controller circuitry schematic diagram provided in an embodiment of the present invention.
Description of symbols：
21：Rectifier bridge； 22：DC-DC converter； 23：Inverter；
24：Control circuit； 25：Yarn storage device motor； 26：Yarn storage wheel；
27：CPU module； 28：Relay； 29：Broken yarn detection module；
210：Over-current detection module.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained under that premise of not paying creative labor, shall fall within the protection scope of the present invention.
Fig. 2 is yarn storage device controller circuitry schematic diagram provided in an embodiment of the present invention, as shown in Fig. 2, the present embodiment provides
Yarn storage device controller include rectifier bridge 21, DC-DC converter 22, inverter 23 and control circuit 24.
Wherein, rectifier bridge 21 is used to the power frequency ac voltage of input being converted to DC voltage, and DC-DC converter 22 is used for
The DC voltage that the rectifier bridge 21 exports is converted to the first voltage and second voltage of two-way isolation, the first voltage warp
The inverter 23 is used to power for yarn storage device motor 25 after being converted to PWM voltage, and the second voltage is used to be the control
Circuit 24 is powered；The control circuit 24 is used to export the pwm signal of control inverter 23.
Illustratively, power frequency ac voltage is usually the AC-input voltage of 220v/50Hz.Above-mentioned first voltage is usual
Also known as busbar voltage, above-mentioned second voltage also commonly known as control voltage.
Illustratively, above-mentioned inverter can select H bridge inverter, also known as H bridge type motor-drive circuit, wherein wrapping
Include 4 triodes (or metal-oxide-semiconductor (metal oxide semiconductor, MOS) field effect transistor
Pipe) and a motor.Operate motor, it is necessary to a pair of of triode on diagonal line be connected.According to different triodes to leading
Understanding and considerate condition, electric current may flow through motor from left to right or from right to left, to control the steering of motor.Control circuit 24 exports
Pwm signal is used to control the conducting of four triodes of H bridge inverter.
Above-mentioned DC-DC converter is, for example, that power semiconductor is used to constitute, and flyback topologies can be selected, normal shock is opened up
It a variety of isolated variable technologies, the exportable multichannel isolated DC voltage in converter pair side such as flutters and meets different use demands.
It is noted that it is shown in Fig. 1 in the related technology, between yarn storage device motor and the output end of Industrial Frequency Transformer
It is also connected with relay, control circuit realizes the start-up and shut-down control to yarn storage device motor by the folding of control relay.However,
The pwm signal for the control inverter that yarn storage device controller provided in this embodiment can export it by control circuit is shut down
Control, so that it may realize the start-up and shut-down control to yarn storage device motor.
In addition it is noted that it is shown in Fig. 1 in the related technology, use Industrial Frequency Transformer for yarn storage device motor confession
Electricity, transformer are constant voltage constant frequency output, need to be equipped with the transformer of different size, storage to the yarn storage device motor that different voltages require
Yarn device motor can only be operated with constant rotational speed, cannot achieve speed regulation.However, originally applying the yarn storage device controller of example offer, Ke Yitong
The pwm signal of adjustment control circuit output is crossed, thus realize the adjusting of the amplitude and frequency to the PWM voltage of yarn storage device motor,
Yarn storage device motor VVVF speed regulation may be implemented, yarn consumption is fed in time on yarn storage wheel when meeting different braiding speed, is subtracted
Few yarn storage device motor frequent start-stop action frequency.
It is understood that yarn storage device controller provided in this embodiment can also include broken yarn detection module 29 and overcurrent
Detection module 210.
As shown in Fig. 2, the broken yarn detection module is used to detect the broken yarn information on the yarn storage device yarn storage wheel 26, it is described
The output end of broken yarn detection module is connect with the control circuit, once detect that exception will feed back abnormal letter to control circuit
Number, and then shut down by control circuit control yarn storage device motor.
As shown in Fig. 2, over-current detection module is used to detect the input current of the yarn storage device motor, the over-current detection mould
The output end of block is connect with the control circuit, once detecting that exception will feed back abnormal signal to control circuit, and then is adjusted
The pwm signal of whole control circuit output, and then realize the adjusting to the PWM voltage of yarn storage device motor.
Originally apply example offer yarn storage device controller, by industrial frequency AC input voltage it is rectified after become DC voltage, through DC-
The DC voltage that output multi-channel is isolated after DC converter, including inverter busbar voltage and control voltage.Wherein busbar voltage is through H
Bridge inverter exports PWM voltage as the power supply of yarn storage device motor, controls voltage as the power supply of controller internal circuit, while control circuit
Output pwm signal controls inverter.The yarn storage device controller based on inversion transformation technique that this programme proposes can save power frequency transformation
Device is run as autonomous system, and integrated level is higher, is simplified system composition, is reduced system cost.And external direct current is not needed
Source is controller power supply, saves decorrelation power cable.
Fig. 3 is yarn storage device controller circuitry schematic diagram provided in an embodiment of the present invention, as shown in figure 3, the present embodiment provides
Yarn storage device controller embodiment shown in Fig. 2 on the basis of, can also include CPU module 27, the CPU module is for being described
Control circuit provides control instruction.
Illustratively, CPU module includes parameter set unit, and the parameter set unit is for being arranged yarn storage device motor
The amplitude and frequency of PWM voltage.The parameter set unit can for example be realized by computer software programs.
Preferably, above-mentioned CPU module 27 is bi-directionally connected with control circuit 24.One side CPU module mentions for control circuit
For control instruction；On the other hand, control circuit can also be fed back different according to broken yarn detection module 29 and over-current detection module 210
Regular signal issues alarm signal to CPU module, while CPU can provide control instruction according to the alarm signal for control circuit,
Shutting down for yarn storage device motor is realized to shut down the pwm signal of control circuit output.
Optionally, above-mentioned CPU module can be the processor being separately provided, and be also possible to be integrated in control circuit
Microprocessor, such as digital signal processor (Digital Signal Processor, DSP).
Originally the yarn storage device controller for applying example offer, different modulation systems is cooperated using inversion transformation technique, passes through software parameter
Output voltage and frequency are set, and output voltage amplitude can be arranged in controller in a wide range and frequency meets electric machine speed regulation need
It asks, a variety of tune such as sinusoidal pulse width modulation (Sinusoidal Pulse Width Modulation, SPWM) can be used in inversion transformation technique
Mode processed makes to export fundametal compoment maximum linear voltage cover motor voltage rating demand.
In practical applications, yarn storage device controller controls to obtain the possible more than one of yarn storage device.In other words, above-mentioned inverse
The PWM voltage for becoming device output is possibly used for driving multiple yarn storage device motors simultaneously into the power supply of multiple yarn storage devices.So, by controlling
The pwm signal for the control inverter that circuit processed exports it shut down control to realize the start-up and shut-down control to yarn storage device motor
When, once the pwm signal of inverter is shut down, then can all be shut down simultaneously by multiple yarn storage device motors of the Driven by inverter.
For example, when the abnormal conditions such as broken yarn occur for wherein a certain yarn storage device, and other yarn storage device normal operations, and shut down control
The pwm signal of circuit output can shut down the yarn storage device motor that all inverters are driven, and can seriously affect production efficiency.
For this purpose, Fig. 4 is storage provided in an embodiment of the present invention the present invention also provides a kind of yarn storage device controller shown in Fig. 4
Yarn device controller circuitry schematic diagram, as shown in figure 4, yarn storage device controller provided in this embodiment is in Fig. 2 or embodiment illustrated in fig. 3
On the basis of, relay, the control circuit 24 are also connected between yarn storage device motor 25 and the output end of the inverter 23
It is also used to control the relay.
The yarn storage device controller of example offer is originally provided, the PWM voltage of inverter output is used to power for multiple yarn storage devices simultaneously,
I.e. simultaneously when driving multiple yarn storage device motors, when the abnormal conditions such as broken yarn occur for wherein a certain yarn storage device, and other yarn storage devices
When normal operation, the relay that the yarn storage device motor being currently abnormal is connected can be controlled by control circuit and is disconnected come real
Now shut down the yarn storage device motor, the yarn storage device without will affect other normal operations.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that：Its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (7)
1. a kind of yarn storage device controller, which is characterized in that including rectifier bridge, DC-DC converter, inverter and control circuit；Its
In,
The rectifier bridge is used to the power frequency ac voltage of input being converted to DC voltage；
The DC-DC converter is used to be converted to the DC voltage that the rectifier bridge exports the first voltage and the of two-way isolation
Two voltages, the first voltage is after the inverter is converted to pulse width modulation (PWM) voltage for supplying for yarn storage device motor
Electricity, the second voltage are used to power for the control circuit；
The control circuit is for exporting the pwm signal for controlling the inverter.
2. controller according to claim 1, which is characterized in that it further include central processor CPU module, the CPU mould
Block is used to provide control instruction for the control circuit.
3. controller according to claim 2, which is characterized in that the CPU module includes parameter set unit, the ginseng
Number setting unit is used to be arranged the amplitude and frequency of the PWM voltage.
4. described in any item controllers according to claim 1~3, which is characterized in that the yarn storage device motor and the inversion
Relay is also connected between the output end of device, the control circuit is also used to control the relay.
5. described in any item controllers according to claim 1~3, which is characterized in that it further include broken yarn detection module, it is described disconnected
Yarn detection module is used to detect broken yarn information on the yarn storage device yarn storage wheel, the output end of the broken yarn detection module with it is described
Control circuit connection.
6. described in any item controllers according to claim 1~3, which is characterized in that further include over-current detection module, the mistake
Stream detection module is used to detect the input current of the yarn storage device motor, the output end of the over-current detection module and the control
Circuit connection.
7. controller according to claim 1, which is characterized in that the inverter is H bridge inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710318130.3A CN108880276A (en) | 2017-05-08 | 2017-05-08 | Yarn storage device controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710318130.3A CN108880276A (en) | 2017-05-08 | 2017-05-08 | Yarn storage device controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108880276A true CN108880276A (en) | 2018-11-23 |
Family
ID=64287799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710318130.3A Pending CN108880276A (en) | 2017-05-08 | 2017-05-08 | Yarn storage device controller |
Country Status (1)
| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295933A (en) * | 2007-04-25 | 2008-10-29 | 中国科学院自动化研究所 | Frequency conversion power source based on digital signal processor controlling |
| CN103166541A (en) * | 2011-12-08 | 2013-06-19 | 贵阳铝镁设计研究院有限公司 | Power supply circuit of smoke exhaust fan of flue gas cleaning system |
| CN104377979A (en) * | 2013-08-14 | 2015-02-25 | 南京博兰得电子科技有限公司 | Inverter and power supply method and application thereof |
| CN206807307U (en) * | 2017-05-08 | 2017-12-26 | 北京大豪科技股份有限公司 | Yarn storage device controller |
-
2017
- 2017-05-08 CN CN201710318130.3A patent/CN108880276A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295933A (en) * | 2007-04-25 | 2008-10-29 | 中国科学院自动化研究所 | Frequency conversion power source based on digital signal processor controlling |
| CN103166541A (en) * | 2011-12-08 | 2013-06-19 | 贵阳铝镁设计研究院有限公司 | Power supply circuit of smoke exhaust fan of flue gas cleaning system |
| CN104377979A (en) * | 2013-08-14 | 2015-02-25 | 南京博兰得电子科技有限公司 | Inverter and power supply method and application thereof |
| CN206807307U (en) * | 2017-05-08 | 2017-12-26 | 北京大豪科技股份有限公司 | Yarn storage device controller |
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