CN108988734A - Yarn feeder control circuit and yarn feeder controller - Google Patents
Yarn feeder control circuit and yarn feeder controller Download PDFInfo
- Publication number
- CN108988734A CN108988734A CN201710401330.5A CN201710401330A CN108988734A CN 108988734 A CN108988734 A CN 108988734A CN 201710401330 A CN201710401330 A CN 201710401330A CN 108988734 A CN108988734 A CN 108988734A
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- circuit
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- control
- yarn feeder
- voltage
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- 238000001514 detection method Methods 0.000 claims description 21
- 230000002457 bidirectional effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009954 braiding Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000009940 knitting Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
Classifications
-
- 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
Abstract
The present invention provides a kind of Yarn feeder control circuit and Yarn feeder controller, which includes rectifier bridge, DC converter, inverter and control sub-circuit；Rectifier bridge is used to the default power frequency ac voltage of input being converted to DC voltage；DC voltage is after inverter is converted to pulse width modulation (PWM) signal voltage for powering for Yarn feeder motor；DC converter is used to be converted to DC voltage predeterminated voltage, and predeterminated voltage is used for as control sub-circuit power supply；Control sub-circuit is used to export the pwm signal of control inverter.Yarn feeder control circuit provided by the invention and Yarn feeder controller, improve the accuracy of speed regulation.
Description
Technical field
The present invention relates to technical field of knitting machinery more particularly to a kind of Yarn feeder control circuit and Yarn feeder controllers.
Background technique
Straight-bar machines Yarn feeder is made of a pair of of roller, and yarn is passed through between roller, and yarn is according to volume under the action of roller
The speed knitted constantly is fed.In cross machine knitting operating, Yarn feeder controller adjusts roller revolving speed by dynamic and makes to yarn
Power is uniform, and Yarn tension fluctuation is inhibited to improve fabric quality so that coil size is uniform, prevents braiding accident from occurring.
In the prior art, Yarn feeder uses single-phase asynchronous motor, is internally integrated start-up capacitance, applies to machine winding single-phase
Alternating voltage, winding tank current are that motor operating can be realized in sine wave.Industrial Frequency Transformer is generallyd use as the confession of Yarn feeder motor
Electricity, and Industrial Frequency Transformer is constant voltage constant frequency output, control circuit is applied to by adjusting the angle of flow of bidirectional thyristor to change
The effective voltage size at machine winding both ends, achievees the purpose that variable voltage control, but speed adjustable range is relatively narrow, so that the accuracy of speed regulation
It is not high.
Summary of the invention
The embodiment of the present invention provides a kind of Yarn feeder control circuit and Yarn feeder controller, improves the accuracy of speed regulation.
The embodiment of the present invention provides a kind of Yarn feeder control circuit, including rectifier bridge, DC converter, inverter and control
Sub-circuit；
Wherein, the input terminal of the rectifier bridge inputs default power frequency ac voltage, the anode of the rectifier bridge respectively with institute
The first input end for stating DC converter is connected with the first input end of the inverter, the cathode of the rectifier bridge respectively with institute
The second input terminal for stating DC converter is connected with the second input terminal of the inverter, the output end of the DC converter with
It is described control sub-circuit input terminal connection, two output ends of the inverter respectively with two input terminals of Yarn feeder motor
The output end of connection, the control sub-circuit is connect with the third input terminal of the inverter and the 4th input terminal respectively；
The rectifier bridge is used to the default power frequency ac voltage of input being converted to DC voltage；The DC voltage is through institute
It states after inverter is converted to pulse width modulation (PWM) signal voltage and is used to power for Yarn feeder motor；
The DC converter is used to be converted to the DC voltage predeterminated voltage, and the predeterminated voltage is for being described
Control sub-circuit power supply；
The control sub-circuit is for exporting the pwm signal for controlling the inverter.
In an embodiment of the present invention, further includes:
Central processor CPU sub-circuit, the CPU sub-circuit are connect with the control sub-circuit；The CPU sub-circuit is used
It is instructed in for the control sub-circuit input control.
In an embodiment of the present invention, the CPU sub-circuit includes parameter setting sub-circuit, the parameter setting sub-circuit
For the amplitude and frequency of the pwm signal voltage to be arranged.
In an embodiment of the present invention, further includes:
Bidirectional thyristor, the bidirectional thyristor are arranged between the inverter and the Yarn feeder motor, the control
System circuit is also used to control the bidirectional thyristor.
In an embodiment of the present invention, further includes:
Over-current detection sub-circuit, the over-current detection sub-circuit are arranged in the control sub-circuit and the Yarn feeder motor
Input terminal between, the over-current detection sub-circuit is used to detect the input current of the Yarn feeder motor.
In an embodiment of the present invention, further includes:
Broken yarn detects sub-circuit, and the broken yarn detection sub-circuit is arranged in the control sub-circuit and the Yarn feeder motor
Input terminal between, and be arranged in parallel with the over-current detection sub-circuit, the broken yarn detection sub-circuit is for detecting described send
Broken yarn information on yarn device Yarn feeding wheel.
In an embodiment of the present invention, the inverter is H bridge inverter.
In an embodiment of the present invention, the DC converter is DC power supply-DC power supply DC-DC converter.
The embodiment of the present invention also provides a kind of Yarn feeder controller, comprising:
The Yarn feeder control circuit of any of the above-described embodiment.
Yarn feeder control circuit provided in an embodiment of the present invention and Yarn feeder controller, by adjusting control sub-circuit output
Pwm signal Yarn feeder may be implemented to realize to the adjusting of the amplitude and frequency of the pwm signal voltage of Yarn feeder motor
Motor VVVF speed regulation, yarn consumption is fed in time on yarn storage wheel when meeting different braiding speed, reduces Yarn feeder motor frequency
Numerous start-stop number, to improve the accuracy of speed regulation.In addition, the pulse width modulation (PWM) electricity converted by inverter
Pressure is that Yarn feeder motor is powered, and the predeterminated voltage of DC converter conversion is control sub-circuit power supply, avoids Industrial Frequency Transformer
It is run as autonomous system, so that the integrated level of Yarn feeder control circuit is higher, and does not need independent external direct current power supply as control
The power supply of system circuit, reduces the use of power cable.
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 a kind of structural schematic diagram of Yarn feeder control circuit provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another Yarn feeder control circuit provided in an embodiment of the present invention.
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.
Description and claims of this specification and term " first ", " second ", " third ", " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage
The data that solution uses in this way are interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein, such as can be with
Sequence other than those of illustrating or describing herein is implemented.In addition, term " includes " and " having " and their times
What is deformed, it is intended that cover it is non-exclusive include, for example, contain the process, method of a series of steps or units, system,
Product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for
The intrinsic other step or units of these process, methods, product or equipment.
It should be noted that these specific embodiments can be combined with each other below, for the same or similar concept
Or process may repeat no more in certain embodiments.
Fig. 1 is a kind of structural schematic diagram of Yarn feeder control circuit provided in an embodiment of the present invention, and certainly, the present invention is implemented
Example is only illustrated by taking Fig. 1 as an example, but does not represent that present invention is limited only by this.It is shown in Figure 1, Yarn feeder control
Circuit 10 may include rectifier bridge 101, DC converter 102, inverter 103 and control sub-circuit 104.
Wherein, the input terminal of rectifier bridge 101 inputs default power frequency ac voltage, the anode of rectifier bridge 101 respectively with direct current
The first input end of converter 102 is connected with the first input end of inverter 103, and the cathode of rectifier bridge 101 becomes with direct current respectively
Second input terminal of parallel operation 102 is connected with the second input terminal of inverter 103, the output end and control of DC converter 102
The input terminal of circuit 104 connects, and two output ends of inverter 103 are connect with two input terminals of Yarn feeder motor respectively, controls
The output end of system circuit 104 is connect with the third input terminal of inverter 103 and the 4th input terminal respectively.
Rectifier bridge 101 is used to the default power frequency ac voltage of input being converted to DC voltage；DC voltage is through inverter
103 are converted to after (Pulse Width Modulation, abbreviation PWM) signal voltage for powering for Yarn feeder motor.
DC converter 102 is used to be converted to DC voltage predeterminated voltage, and predeterminated voltage is used for as control sub-circuit 104
Power supply.
Control sub-circuit 104 is used to export the pwm signal of control inverter 103.
Exemplary, in embodiments of the present invention, default power frequency ac voltage is usually the exchange input electricity of 220v/50Hz
Pressure, certainly, can specifically be configured according to actual needs, here, the embodiment of the present invention is only to preset power frequency ac voltage
To be illustrated for the AC-input voltage of 220v/50Hz, but do not represent that present invention is limited only by this.
Optionally, in embodiments of the present invention, DC converter 102 is DC power supply-DC power supply (Direct
Current-Direct Current, abbreviation DC-DC) converter.The DC-DC converter is, for example, to use power semiconductor
It constitutes, a variety of isolated variable technologies such as flyback topologies, forward topology, the exportable multichannel isolated DC in converter pair side can be selected
Voltage meets different use demands.
Optionally, inverter 103 can select H bridge inverter 103, also known as H bridge type motor-drive circuit, including
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 sub-circuit 104
Output pwm signal is used to control the conducting of four triodes of H bridge inverter 103.
Yarn feeder control circuit 10 provided in an embodiment of the present invention, the PWM letter exported by adjusting control sub-circuit 104
Number, to realize the adjusting of the amplitude and frequency to the pwm signal voltage of Yarn feeder motor, Yarn feeder motor transformation may be implemented
Frequency control, yarn consumption is fed in time on yarn storage wheel when meeting different braiding speed, and it is dynamic to reduce Yarn feeder motor frequent start-stop
Make number, to improve the accuracy of speed regulation.In addition, the pulse width modulation (PWM) voltage converted by inverter 103 is to send
The power supply of yarn device motor, the predeterminated voltage that DC converter 102 is converted are that control sub-circuit 104 is powered, and avoid Industrial Frequency Transformer
It is run as autonomous system, so that the integrated level of Yarn feeder control circuit 10 is higher, and does not need independent external direct current power supply and be
It controls sub-circuit 104 to power, reduces the use of power cable.
It is further, shown in Figure 2 on the basis of Fig. 1 corresponding embodiment based on the corresponding embodiment of Fig. 1,
Fig. 2 is the structural schematic diagram of another Yarn feeder control circuit 10 provided in an embodiment of the present invention, and certainly, the embodiment of the present invention is only
It is to be illustrated by taking Fig. 2 as an example, but do not represent that present invention is limited only by this.It is shown in Figure 2, the Yarn feeder control circuit
10 can also include:
Central processor CPU sub-circuit 105, CPU sub-circuit 105 are connect with control sub-circuit 104；CPU sub-circuit 105 is used
It is instructed in for control 104 input control of sub-circuit.Further, CPU sub-circuit 105 includes parameter setting sub-circuit, and parameter is set
Sub-circuit is set for the amplitude and frequency of pwm signal voltage to be arranged.Wherein, which can be soft by computer
Part program is realized.
Wherein, (Central Processing Unit, abbreviation CPU) sub-circuit can be the processor being separately provided,
The microprocessor that can be integrated in control sub-circuit 104, such as digital signal processor (Digital Signal
Processor, DSP).
Optionally, in embodiments of the present invention, by the way that CPU sub-circuit 105 is arranged, its object is to: inversion can be used
Technology cooperates different modulation systems, output voltage and frequency is arranged by software parameter, control sub-circuit 104 can be in wide model
It encloses interior setting output voltage amplitude and frequency meets electric machine speed regulation demand, sinusoidal pulse width modulation can be used in inversion transformation technique
Different Modulations such as (Sinusoidal Pulse Width Modulation, SPWM) make to export fundametal compoment maximum linear
Voltage cover motor voltage rating demand, to improve the accuracy of speed regulation.
Optionally, which can also include:
Control sub-circuit 104 and Yarn feeder motor is arranged in over-current detection sub-circuit 106, over-current detection sub-circuit 106
Between input terminal, over-current detection sub-circuit 106 is used to detect the input current of Yarn feeder motor.
It is exemplary, in embodiments of the present invention, by the way that over-current detection sub-circuit 106 is arranged, its object is to: over-current detection
Sub-circuit 106 once detects that exception will feed back abnormal signal to control sub-circuit 104, defeated with adjustment control sub-circuit 104
Pwm signal out, to realize the adjusting to the pwm signal voltage of Yarn feeder motor.
Optionally, which can also include:
Broken yarn detects sub-circuit 107, and control sub-circuit 104 and Yarn feeder motor is arranged in broken yarn detection sub-circuit 107
It between input terminal, and is arranged in parallel with over-current detection sub-circuit 106, broken yarn detection sub-circuit 107 send yarn for detecting Yarn feeder
Broken yarn information on wheel.
It is exemplary, in embodiments of the present invention, sub-circuit 107 is detected by setting broken yarn, its object is to: broken yarn inspection
It surveys sub-circuit 107 and once detects exception, abnormal signal will be fed back to control sub-circuit 104, so that control sub-circuit
104 control Yarn feeder motors are shut down.
In actual application, CPU sub-circuit 105 is bi-directionally connected with control sub-circuit 104.One side CPU sub-circuit
105 be control 104 input control of sub-circuit instruction；On the other hand, control sub-circuit 104 can also detect sub-circuit according to broken yarn
107 and the abnormal signal that feeds back of over-current detection sub-circuit 106, alarm signal, while CPU sub-circuit are issued to CPU sub-circuit 105
105 can be control 104 input control of sub-circuit instruction according to the alarm signal, to shut down the PWM that control sub-circuit 104 exports
Signal realizes shutting down for Yarn feeder motor.
Optionally, which can also include:
Bidirectional thyristor 108, bidirectional thyristor 108 are arranged between inverter 103 and Yarn feeder motor, control sub-circuit
104 are also used to control bidirectional thyristor 108.
It is exemplary, in embodiments of the present invention, by the way that bidirectional thyristor 108 is arranged, its object is to: under normal conditions,
The PWM voltage that inverter 103 exports is used to power for multiple Yarn feeders simultaneously, i.e., when driving multiple Yarn feeder motors simultaneously, when
Wherein the abnormal conditions such as broken yarn or overcurrent occur for a certain Yarn feeder, and when other Yarn feeder normal operations, control can be passed through
Sub-circuit 104 controls the bidirectional thyristor 108 that the Yarn feeder motor being currently abnormal is connected and disconnects to realize that shutting down this send
Yarn device motor, the Yarn feeder without will affect other normal operations.
The embodiment of the present invention also provides a kind of Yarn feeder controller, which may include:
Yarn feeder control circuit 10 shown in any of the above-described embodiment.
Yarn feeder controller provided in an embodiment of the present invention, can execute Yarn feeder control circuit shown in above-described embodiment
10 corresponding technical solutions, realization principle and beneficial effect are similar, are no longer repeated herein.
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
Pipe present invention has been described in detail with reference to the aforementioned embodiments, 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 (9)
1. a kind of Yarn feeder control circuit, which is characterized in that including rectifier bridge, DC converter, inverter and control sub-circuit；
Wherein, the input terminal of the rectifier bridge inputs default power frequency ac voltage, the anode of the rectifier bridge respectively with it is described straight
The first input end of current converter is connected with the first input end of the inverter, the cathode of the rectifier bridge respectively with it is described straight
Second input terminal of current converter is connected with the second input terminal of the inverter, the output end of the DC converter with it is described
The input terminal connection of sub-circuit is controlled, two output ends of the inverter connect with two input terminals of Yarn feeder motor respectively
It connects, the output end of the control sub-circuit is connect with the third input terminal of the inverter and the 4th input terminal respectively；
The rectifier bridge is used to the default power frequency ac voltage of input being converted to DC voltage；The DC voltage is through described inverse
Become after device is converted to pulse width modulation (PWM) signal voltage and is used for as the power supply of Yarn feeder motor；
The DC converter is used to be converted to the DC voltage predeterminated voltage, and the predeterminated voltage is used to be the control
Sub-circuit power supply；
The control sub-circuit is for exporting the pwm signal for controlling the inverter.
2. control circuit according to claim 1, which is characterized in that further include:
Central processor CPU sub-circuit, the CPU sub-circuit are connect with the control sub-circuit；The CPU sub-circuit is for being
The control sub-circuit input control instruction.
3. control circuit according to claim 2, which is characterized in that the CPU sub-circuit includes parameter setting sub-circuit,
The parameter setting sub-circuit is used to be arranged the amplitude and frequency of the pwm signal voltage.
4. described in any item control circuits according to claim 1~3, which is characterized in that further include:
Bidirectional thyristor, the bidirectional thyristor are arranged between the inverter and the Yarn feeder motor, control
Circuit is also used to control the bidirectional thyristor.
5. described in any item control circuits according to claim 1~3, which is characterized in that further include:
Over-current detection sub-circuit, the over-current detection sub-circuit be arranged in it is described control sub-circuit and the Yarn feeder motor it is defeated
Enter between end, the over-current detection sub-circuit is used to detect the input current of the Yarn feeder motor.
6. control circuit according to claim 5, which is characterized in that further include:
Broken yarn detects sub-circuit, and the defeated of the control sub-circuit and the Yarn feeder motor is arranged in broken yarn detection sub-circuit
Enter between end, and be arranged in parallel with the over-current detection sub-circuit, the broken yarn detection sub-circuit is for detecting the Yarn feeder
Broken yarn information on Yarn feeding wheel.
7. control circuit according to claim 1, which is characterized in that
The inverter is H bridge inverter.
8. control circuit according to claim 1, which is characterized in that
The DC converter is DC power supply-DC power supply DC-DC converter.
9. a kind of Yarn feeder controller characterized by comprising
The described in any item Yarn feeder control circuits of the claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710401330.5A CN108988734A (en) | 2017-05-31 | 2017-05-31 | Yarn feeder control circuit and yarn feeder controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710401330.5A CN108988734A (en) | 2017-05-31 | 2017-05-31 | Yarn feeder control circuit and yarn feeder controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108988734A true CN108988734A (en) | 2018-12-11 |
Family
ID=64501453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710401330.5A Withdrawn CN108988734A (en) | 2017-05-31 | 2017-05-31 | Yarn feeder control circuit and yarn feeder controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108988734A (en) |
-
2017
- 2017-05-31 CN CN201710401330.5A patent/CN108988734A/en not_active Withdrawn
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| PB01 | Publication | ||
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Application publication date: 20181211 |