CN206922682U - Yarn feeder control circuit and yarn feeder controller - Google Patents
Yarn feeder control circuit and yarn feeder controller Download PDFInfo
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- CN206922682U CN206922682U CN201720620649.2U CN201720620649U CN206922682U CN 206922682 U CN206922682 U CN 206922682U CN 201720620649 U CN201720620649 U CN 201720620649U CN 206922682 U CN206922682 U CN 206922682U
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Abstract
The utility model provides a kind of Yarn feeder control circuit and Yarn feeder controller, and the control circuit 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 used to power for Yarn feeder motor after inverter is converted to pulse width modulation (PWM) signal voltage；DC converter is used to DC voltage being converted to predeterminated voltage, and predeterminated voltage is used for for control sub-circuit power supply；Sub-circuit is controlled to be used for the pwm signal of output control inverter.Yarn feeder control circuit provided by the utility model and Yarn feeder controller, improve the degree of accuracy of speed governing.
Description
Technical field
It the utility model is related to technical field of knitting machinery, more particularly to a kind of Yarn feeder control circuit and Yarn feeder control
Device.
Background technology
Straight-bar machines Yarn feeder is made up of a pair of rollers, and yarn passes through between roller, and yarn is according to volume in the presence of roller
The speed knitted constantly is fed.When cross machine knitting operates, Yarn feeder controller is by dynamic adjustment roller rotating speed to yarn
Power is uniform, suppresses Yarn tension fluctuation so that coil size is uniform, improves fabric quality, prevents braiding accident from occurring.
In the prior art, Yarn feeder uses single-phase asynchronous motor, is internally integrated start-up capacitance, machine winding is applied single-phase
Alternating voltage, winding tank current are that motor operating can be achieved in sine wave.Generally use Industrial Frequency Transformer supplies for Yarn feeder motor
Electricity, and Industrial Frequency Transformer exports for constant voltage constant frequency, 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, reach the purpose of variable voltage control, but speed adjustable range is narrower so that the degree of accuracy of speed governing
It is not high.
Utility model content
The utility model embodiment provides a kind of Yarn feeder control circuit and Yarn feeder controller, improves the accurate of speed governing
Degree.
The utility model embodiment provides a kind of Yarn feeder control circuit, including rectifier bridge, DC converter, inverter and
Control sub-circuit；
Wherein, the default power frequency ac voltage of input input of the rectifier bridge, the positive pole of the rectifier bridge respectively with institute
The first input end for stating DC converter connects with the first input end of the inverter, the negative pole of the rectifier bridge respectively with institute
The second input of DC converter is stated to connect with the second input of the inverter, the output end of the DC converter with
The input connection of the control sub-circuit, two output ends of the inverter, two inputs with Yarn feeder motor respectively
Connection, the output end of the control sub-circuit are connected with the 3rd input of the inverter and the 4th input 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
State after inverter is converted to pulse width modulation (PWM) signal voltage and be used to power for Yarn feeder motor；
The DC converter is used to the DC voltage being converted to predeterminated voltage, and it is described that the predeterminated voltage, which is used for,
Control sub-circuit power supply；
The control sub-circuit is used for the pwm signal of inverter described in output control.
In the embodiment of the utility model one, in addition to：
Central processor CPU sub-circuit, the CPU sub-circuits are connected with the control sub-circuit；The CPU sub-circuits are used
In for it is described control sub-circuit input control instruction.
In the embodiment of the utility model one, the CPU sub-circuits include parameter setting sub-circuit, parameter setting
Circuit is used for the amplitude and frequency for setting the pwm signal voltage.
In the embodiment of the utility model one, in addition to：
Bidirectional thyristor, the bidirectional thyristor are arranged between the inverter and the Yarn feeder motor, the control
System circuit is additionally operable to control the bidirectional thyristor.
In the embodiment of the utility model one, in addition to：
Over-current detection sub-circuit, the over-current detection sub-circuit are arranged on the control sub-circuit and the Yarn feeder motor
Input between, the over-current detection sub-circuit is used to detect the input current of the Yarn feeder motor.
In the embodiment of the utility model one, in addition to：
Broken yarn detects sub-circuit, and the broken yarn detection sub-circuit is arranged on the control sub-circuit and the Yarn feeder motor
Input between, and be arranged in parallel with the over-current detection sub-circuit, the broken yarn detection sub-circuit is used to detect described send
Broken yarn information on yarn device Yarn feeding wheel.
In the embodiment of the utility model one, the inverter is H bridge inverters.
In the embodiment of the utility model one, the DC converter is dc source-dc source DC-DC converter.
The utility model embodiment also provides a kind of Yarn feeder controller, including：
The Yarn feeder control circuit of any of the above-described embodiment.
The Yarn feeder control circuit and Yarn feeder controller that the utility model embodiment provides, sub-circuit is controlled by adjusting
The pwm signal of output, so as to realize the regulation of amplitude and frequency to the pwm signal voltage of Yarn feeder motor, it is possible to achieve send
Yarn device motor VVVF speed regulation, meet that yarn consumption is fed in time on yarn storage wheel during different braiding speed, reduces Yarn feeder electricity
Machine frequent start-stop action frequency, so as to improve the degree of accuracy of speed governing.In addition, the pulse width modulation changed by inverter
PWM voltages are powered for Yarn feeder motor, and the predeterminated voltage of DC converter conversion is control sub-circuit power supply, avoids power frequency change
Depressor 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
For control sub-circuit power supply, reduce the use of power cable.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the utility model or technical scheme of the prior art
The required accompanying drawing used is briefly described in technology description, it should be apparent that, drawings in the following description are this practicalities
Some new embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation for Yarn feeder control circuit that the utility model embodiment provides；
Fig. 2 is the structural representation for another Yarn feeder control circuit that the utility model embodiment provides.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not paid, is belonged to
The scope of the utility model protection.
Term " first ", " second ", " the 3rd " in specification and claims of the present utility model and above-mentioned accompanying drawing,
(if present)s such as " the 4 " is for distinguishing similar object, without for describing specific order or precedence.Should
The data that the understanding so uses can exchange in the appropriate case, so as to embodiment of the present utility model described herein, example
If implemented with the order in addition to those for illustrating or describing herein.In addition, term " comprising " and " having " and
Their any deformation, it is intended that cover it is non-exclusive include, for example, containing the process of series of steps or unit, side
Method, system, product or equipment are not necessarily limited to those steps clearly listed or unit, but may include not list clearly
Or for the intrinsic other steps of these processes, method, product or equipment or unit.
It should be noted that these specific embodiments can be combined with each other below, for same or analogous concept
Or process may repeat no more in certain embodiments.
Fig. 1 is a kind of structural representation for Yarn feeder control circuit that the utility model embodiment provides, certainly, this practicality
New embodiment simply illustrates by taking Fig. 1 as an example, but does not represent the utility model and be limited only to this.It is shown in Figure 1,
The Yarn feeder control circuit 10 can include rectifier bridge 101, DC converter 102, inverter 103 and control sub-circuit 104.
Wherein, the default power frequency ac voltage of input input of rectifier bridge 101, the positive pole of rectifier bridge 101 respectively with direct current
The first input end of converter 102 connects with the first input end of inverter 103, and the negative pole of rectifier bridge 101 becomes with direct current respectively
Second input of parallel operation 102 connects with the second input of inverter 103, output end and control of DC converter 102
The input connection of circuit 104, two output ends of inverter 103 are connected with two inputs of Yarn feeder motor, controlled respectively
The output end of system circuit 104 is connected with the 3rd input of inverter 103 and the 4th input 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 and are used to after (Pulse Width Modulation, abbreviation PWM) signal voltage power for Yarn feeder motor.
DC converter 102 is used to DC voltage being converted to predeterminated voltage, and predeterminated voltage is used for for control sub-circuit 104
Power supply.
Sub-circuit 104 is controlled to be used for the pwm signal of output control inverter 103.
Example, in the utility model embodiment, default power frequency ac voltage is usually 220v/50Hz exchange input
Voltage, certainly, it can be specifically configured according to being actually needed, here, the utility model embodiment is simply handed over default power frequency
Stream voltage does not represent the utility model and is limited only to this to be illustrated exemplified by 220v/50Hz AC-input voltage.
Optionally, in the utility model embodiment, DC converter 102 is dc source-dc source (Direct
Current-Direct Current, abbreviation DC-DC) converter.The DC-DC converter is, for example, to use power semiconductor
Form, a variety of isolated variable technologies such as flyback topologies, forward topology, the exportable multichannel isolated DC of converter secondary can be selected
Voltage, meet different use demands.
Optionally, inverter 103 can select H bridge inverters 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 turn on a pair of triodes on diagonal.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, so as to the steering of controlled motor.Control sub-circuit 104
Output pwm signal is used for the conducting for controlling four triodes of H bridge inverters 103.
The Yarn feeder control circuit 10 that the utility model embodiment provides, the PWM exported by adjusting control sub-circuit 104
Signal, so as to realize the regulation of amplitude and frequency to the pwm signal voltage of Yarn feeder motor, it is possible to achieve Yarn feeder motor becomes
Voltage variable frequency speed regulating, meet that yarn consumption is fed in time on yarn storage wheel during different braiding speed, reduces Yarn feeder motor frequent start-stop
Action frequency, so as to improve the degree of accuracy of speed governing.In addition, the pulse width modulation (PWM) voltage changed by inverter 103 is
Yarn feeder motor is powered, and the predeterminated voltage that DC converter 102 is changed is powered for control sub-circuit 104, avoids power frequency transformation
Device 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
Powered for control sub-circuit 104, reduce the use of power cable.
It is further, shown in Figure 2 on the basis of embodiment corresponding to Fig. 1 based on embodiment corresponding to Fig. 1,
Fig. 2 is the structural representation for another Yarn feeder control circuit 10 that the utility model embodiment provides, certainly, the utility model
Embodiment simply illustrates by taking Fig. 2 as an example, but does not represent the utility model and be limited only to this.Shown in Figure 2, this send
Yarn device control circuit 10 can also include：
Central processor CPU sub-circuit 105, CPU sub-circuits 105 are connected with control sub-circuit 104；CPU sub-circuits 105 are used
In for control sub-circuit 104 input control instruction.Further, CPU sub-circuits 105 include parameter setting sub-circuit, and parameter is set
Put amplitude and frequency that sub-circuit is used to set pwm signal voltage.Wherein, the parameter setting sub-circuit 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 the utility model embodiment, by setting CPU sub-circuits 105, its object is to：It can use
Inversion transformation technique coordinates different modulation system, and output voltage and frequency are set by software parameter, and control sub-circuit 104 can be
Output voltage amplitude and frequency is set to meet electric machine speed regulation demand in wide scope, inversion transformation technique can use sinusoidal pulse width modulation
Different Modulations such as (Sinusoidal Pulse Width Modulation, SPWM), make output fundametal compoment maximum linear
Voltage cover motor rated voltage demand, so as to improve the degree of accuracy of speed governing.
Optionally, the Yarn feeder control circuit 10 can also include：
Over-current detection sub-circuit 106, over-current detection sub-circuit 106 are arranged on control sub-circuit 104 and Yarn feeder motor
Between input, over-current detection sub-circuit 106 is used for the input current for detecting Yarn feeder motor.
Example, in the utility model embodiment, by setting over-current detection sub-circuit 106, its object is to：Excessively stream
Detection sub-circuit 106 once detects that exception will feed back abnormal signal to control sub-circuit 104, to adjust control sub-circuit
The pwm signal of 104 outputs, so as to realize the regulation to the pwm signal voltage of Yarn feeder motor.
Optionally, the Yarn feeder control circuit 10 can also include：
Broken yarn detects sub-circuit 107, and broken yarn detection sub-circuit 107 is arranged on control sub-circuit 104 and Yarn feeder motor
Between input, and it 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.
Example, in the utility model embodiment, by setting broken yarn to detect sub-circuit 107, its object is to：This is disconnected
Yarn detection sub-circuit 107 once detects exception, abnormal signal will be fed back to control sub-circuit 104, so that control
Circuit 104 controls Yarn feeder motor to close down.
In actual application, CPU sub-circuits 105 are bi-directionally connected with control sub-circuit 104.One side CPU sub-circuits
105 input control instruction for control sub-circuit 104；On the other hand, sub-circuit 104 is controlled to detect sub-circuit according to broken yarn
107 and over-current detection sub-circuit 106 feed back abnormal signal, send alarm signal, while CPU sub-circuits to CPU sub-circuits 105
105 can input control instruction according to the alarm signal for control sub-circuit 104, to close down the PWM that control sub-circuit 104 exports
Signal realizes closing down for Yarn feeder motor.
Optionally, the Yarn feeder control circuit 10 can also include：
Bidirectional thyristor 108, bidirectional thyristor 108 are arranged between inverter 103 and Yarn feeder motor, control sub-circuit
104 are additionally operable to control bidirectional thyristor 108.
Example, in the utility model embodiment, by setting bidirectional thyristor 108, its object is to：Normal conditions
Under, the PWM voltages that inverter 103 exports for multiple Yarn feeders simultaneously for powering, i.e., when driving multiple Yarn feeder motors simultaneously,
When the wherein a certain Yarn feeder generation abnormal conditions such as broken yarn or excessively stream, and during other Yarn feeder normal operations, control can be passed through
The bidirectional thyristor 108 that system circuit 104 controls the current Yarn feeder motor that exception occurs to be connected disconnects closes down this to realize
Yarn feeder motor, the Yarn feeder without influenceing other normal operations.
The utility model embodiment also provides a kind of Yarn feeder controller, and the Yarn feeder controller can include：
Yarn feeder control circuit 10 shown in any of the above-described embodiment.
The Yarn feeder controller that the utility model embodiment provides, the Yarn feeder control shown in above-described embodiment can be performed
Technical scheme corresponding to circuit 10, its realization principle and beneficial effect are similar, are no longer repeated herein.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (9)
1. a kind of Yarn feeder control circuit, it is characterised in that including rectifier bridge, DC converter, inverter and control sub-circuit；
Wherein, the default power frequency ac voltage of input input of the rectifier bridge, the positive pole of the rectifier bridge respectively with it is described straight
The first input end of current converter connects with the first input end of the inverter, the negative pole of the rectifier bridge respectively with it is described straight
Second input of current converter connects with the second input of the inverter, the output end of the DC converter with it is described
The input connection of sub-circuit is controlled, two output ends of the inverter connect with two inputs of Yarn feeder motor respectively
Connect, the output end of the control sub-circuit is connected with the 3rd input of the inverter and the 4th input 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 be used to power into Yarn feeder motor；
The DC converter is used to the DC voltage being converted to predeterminated voltage, and it is the control that the predeterminated voltage, which is used for,
Sub-circuit is powered；
The control sub-circuit is used for the pwm signal of inverter described in output control.
2. control circuit according to claim 1, it is characterised in that also include：
Central processor CPU sub-circuit, the CPU sub-circuits are connected with the control sub-circuit；The CPU sub-circuits are used for
The control sub-circuit input control instruction.
3. control circuit according to claim 2, it is characterised in that the CPU sub-circuits include parameter setting sub-circuit,
The parameter setting sub-circuit is used for the amplitude and frequency for setting the pwm signal voltage.
4. according to the control circuit described in any one of claims 1 to 3, it is characterised in that also include：
Bidirectional thyristor, the bidirectional thyristor are arranged between the inverter and the Yarn feeder motor, control
Circuit is additionally operable to control the bidirectional thyristor.
5. according to the control circuit described in any one of claims 1 to 3, it is characterised in that also include：
Over-current detection sub-circuit, the over-current detection sub-circuit be arranged on it is described control sub-circuit and the Yarn feeder motor it is defeated
Between entering end, the over-current detection sub-circuit is used for the input current for detecting the Yarn feeder motor.
6. control circuit according to claim 5, it is characterised in that also include：
Broken yarn detects sub-circuit, and broken yarn detection sub-circuit is arranged on the defeated of the control sub-circuit and the Yarn feeder motor
Between entering end, and it is arranged in parallel with the over-current detection sub-circuit, the broken yarn detection sub-circuit is used to detect the Yarn feeder
Broken yarn information on Yarn feeding wheel.
7. control circuit according to claim 1, it is characterised in that
The inverter is H bridge inverters.
8. control circuit according to claim 1, it is characterised in that
The DC converter is dc source-dc source DC-DC converter.
A kind of 9. Yarn feeder controller, it is characterised in that including：
Yarn feeder control circuit described in the claims any one of 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720620649.2U CN206922682U (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 |
|---|---|---|---|
| CN201720620649.2U CN206922682U (en) | 2017-05-31 | 2017-05-31 | Yarn feeder control circuit and yarn feeder controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206922682U true CN206922682U (en) | 2018-01-23 |
Family
ID=61313853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720620649.2U Active CN206922682U (en) | 2017-05-31 | 2017-05-31 | Yarn feeder control circuit and yarn feeder controller |
Country Status (1)
| Country | Link |
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| CN (1) | CN206922682U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111082736A (en) * | 2020-01-21 | 2020-04-28 | 佛山市银丰世科科技有限公司 | Drive circuit for alternating current motor and household appliance |
-
2017
- 2017-05-31 CN CN201720620649.2U patent/CN206922682U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111082736A (en) * | 2020-01-21 | 2020-04-28 | 佛山市银丰世科科技有限公司 | Drive circuit for alternating current motor and household appliance |
| CN111082736B (en) * | 2020-01-21 | 2021-07-13 | 佛山市银丰世科科技有限公司 | Drive circuit for alternating current motor and household appliance |
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