CN207166389U - A kind of induction machine row of falling roping moment control device - Google Patents
A kind of induction machine row of falling roping moment control device Download PDFInfo
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- CN207166389U CN207166389U CN201721139882.5U CN201721139882U CN207166389U CN 207166389 U CN207166389 U CN 207166389U CN 201721139882 U CN201721139882 U CN 201721139882U CN 207166389 U CN207166389 U CN 207166389U
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- induction machine
- microprocessor
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- roping
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Abstract
The utility model discloses a kind of induction machine row of falling roping moment control device, including dc source, power supply of microprocessor unit, DC bus-bar voltage control unit, microprocessor unit, voltage sampling unit, current detecting unit, rotation speed detection unit and inverter unit for power supply.The utility model is using microprocessor as core, it is configured with the circuit modules such as DC bus-bar voltage sampling unit, induction machine stator side current sample, angular transducer, chopper circuit, three-phase inversion electric bridge, not only can output torque of the monitoring work in the induction machine of tension state in real time, and microprocessor controls DC bus-bar voltage by output pwm signal, actual DC busbar voltage is close or equal to theoretical value when the induction machine is worked, so as to control the accuracy of induction machine output torque, stability.
Description
Technical field
The utility model belongs to induction machine Torque Control field, and in particular to a kind of induction machine row of falling roping torque control
Device processed.
Background technology
In weaving and the industry such as cables manufacturing, because properties of product improve constantly, to corresponding technological parameter it is also proposed that more
High request, identical tension unwinding yarn releasing or unwrapping wire are increasingly taken seriously.The forming process of tension force be yarn in axial direction by external force
Stretching action produce the process of elastic deformation, it is therefore desirable to a kind of tensioner provides the external force of drawing, produces yarn
Raw tension force, and the size of yarn tension can be controlled.
Conventional tenslator is that yarn is wrapped on rotating member, rotates structure when pulling force is applied on yarn
Part follows rotation, that is, unwinds yarn releasing line.According to rotating member controlled case during unwinding yarn, tensioner Control Cooling is divided into
Passive unwinding formula, actively unwind formula and opposing torque formula.Opposing torque formula be by let off roll central shaft apply the moment of resistance,
Resistance is produced to roller during let off roll unwrapping wire, yarn is done the motion of opposite direction with let off roll, such yarn is with regard to suitable
In being stretched, tension force is formed.Opposing torque formula has the advantages that easily controllable, stable.
Induction machine because its it is simple in construction, easily manufactured, cheap, reliable, sturdy and durable the advantages that, obtain wide
General application.The technology of induction machine is quite ripe at present, in the timing induction machine stator side voltage of the parameter of electric machine one, electric current
It is certain with DC bus-bar voltage relation, torque is related to motor speed and induction machine stator side voltage.According to induced electricity
Machine mathematical modeling can derive that induction machine is under the low drawing working condition of rotating speed, and when motor speed changes, motor turns
Square is basically unchanged, therefore can be by directly controlling induction machine stator side voltage to answer motor output torque come Perceived control.
Utility model content
In view of the above-mentioned problems, the utility model proposes one kind to control induced electricity by directly controlling DC bus-bar voltage
Machine output torque, so as to keep the Stability and veracity of motor.
Above-mentioned technical purpose is realized, reaches above-mentioned technique effect, the utility model is achieved through the following technical solutions：
A kind of induction machine row of falling roping moment control device, including dc source, power supply of microprocessor for power supply
Unit, DC bus-bar voltage control unit, microprocessor unit, voltage sampling unit, current detecting unit, rotation speed detection unit
And inverter unit.
The output end of described dc source respectively with power supply of microprocessor unit and DC bus-bar voltage control unit
Input is connected, to provide dc source.
The output end of the power supply of microprocessor unit is connected with the power end of microprocessor unit；The microprocessor list
Output end of the input of member respectively with voltage sampling unit, current detecting unit and rotation speed detection unit is connected, and its data passes
Defeated end is connected with the data transmission terminal of DC bus-bar voltage control unit, and its output end is connected with the input of inverter unit；
The current detecting unit and rotation speed detection unit are respectively used to be connected with induction machine, gather induction machine stator electric current and
Motor speed.
The output end of the DC bus-bar voltage control unit is connected with the input of inverter unit.
The output end of the inverter unit is used to be connected with induction machine.
As further improvement of the utility model, the DC bus-bar voltage control unit includes the excessively stream being sequentially connected
Protection circuit and chopper circuit, the input of the current foldback circuit are connected with the output end of dc source.
As further improvement of the utility model, described microprocessor unit includes main control microprocessor unit and auxiliary
Control microprocessor unit.
Described main control microprocessor unit includes first microprocessor chip and PWM waveform generator, and described first
Output end of the microprocessor chip respectively with current detecting unit, rotation speed detection unit and voltage sampling unit is connected, and it is exported
End is connected with the input of PWM waveform generator；The output end of the PWM waveform generator and the input phase of chopper circuit
Even.
Described auxiliary control microprocessor includes the second microprocessor chip and SPWM waveform generators, described second micro- place
The input of reason device chip is connected with the output end of first microprocessor chip, and its output end is connected with SPWM waveform generators,
The output end of SPWM waveform generators is connected with the input of inverter unit.
As further improvement of the utility model, the inverter unit is three-phase inversion electric bridge, the current detecting
Unit includes three road current sampling circuits, is connected respectively with three output ends of three-phase inversion electric bridge.
As further improvement of the utility model, the current sampling circuit is sampling resistor.
As further improvement of the utility model, the power supply of microprocessor unit is that DC/DC is depressured chip.
As further improvement of the utility model, in addition to monitoring unit, the data transmission terminal of the monitoring unit with
The data transmission terminal of main control microprocessor unit is connected.
As further improvement of the utility model, the monitoring unit is touch control display, itself and main control microprocessor
Serial communication is used between unit.
As further improvement of the utility model, in addition to alarm unit, the input of the alarm unit and master control
The output end of microprocessor unit is connected.
As further improvement of the utility model, the rotation speed detection unit is angular transducer.
The beneficial effects of the utility model：The utility model is configured with DC bus-bar voltage and adopted using microprocessor as core
The circuit modules such as sample unit, induction machine stator side current sample, angular transducer, chopper circuit, three-phase inversion electric bridge, not only
Can monitoring work is in the output torque of the induction machine of tension state in real time, and microprocessor passes through output pwm signal control
DC bus-bar voltage processed, actual DC busbar voltage is close or equal to theoretical value when the induction machine is worked, so as to which Perceived control should
The Stability and veracity of motor output torque.
Brief description of the drawings
Fig. 1 is structure chart of the present utility model；
Fig. 2 is a kind of structural representation of embodiment of the utility model.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, with reference to embodiments, to this
Utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining this practicality
It is new, it is not used to limit the utility model.
Application principle of the present utility model is explained in detail below in conjunction with the accompanying drawings.
A kind of induction machine row of falling roping moment control device as shown in Figure 1, including microprocessor unit, microprocessor
Power subsystem, DC bus-bar voltage control unit, inverter unit, induction machine, voltage sampling unit, current detecting unit,
And rotation speed detection unit.
Described DC bus-bar voltage control unit and power supply of microprocessor unit is linked into direct current by way of in parallel
On power supply, the output end of dc source respectively with DC bus-bar voltage control unit and the input phase of power supply of microprocessor unit
Even, dc source is provided for device.Described DC bus-bar voltage control unit include the over-current protecting unit that is sequentially connected and
Chopper circuit.The input of the over-current protecting unit is connected with the output end of dc source, and described current foldback circuit is adopted
With resettable fuse, ensure whole device electric current within certain current threshold.Described power supply of microprocessor unit
Output end is connected with the input of microprocessor unit, and power supply of microprocessor unit is DC/DC voltage reduction modules, and dc source passes through
After the decompression of DC/DC voltage reduction modules, there is provided 5V dc sources needed for microprocessor unit.
A kind of embodiment of the present utility model as shown in Figure 2, described microprocessor unit include main control microprocessor list
Member and auxiliary control microprocessor unit.
Main control microprocessor unit includes first microprocessor chip, for producing the waveform generator of PWM waveform, serially
Interface and I/O mouths.
The output end of described main control microprocessor unit is connected with the input of DC bus-bar voltage control unit, described
DC bus-bar voltage control unit use chopper circuit, the output end of described PWM waveform generator and chopper circuit it is defeated
Enter end to be connected, described chopper circuit is the buck circuit with automatic regulation function, there is provided inverter unit driving sense
Answer DC voltage needed for motor.
The input of the main control microprocessor unit and voltage sampling unit, current detecting unit and rotation speed detection unit
Output end be connected.Magnitude of voltage, current detecting unit of the main control microprocessor unit in voltage sampling unit circuit are surveyed
Induction machine stator electric current average value and the dutycycle of rotational speed regulation output pwm signal that measures of rotation speed detection unit,
Actual DC busbar voltage is close or equal to required torque and correspond to DC bus-bar voltage theoretical value.Wherein, described rotating speed inspection
Survey unit is angular transducer.
Described auxiliary control microprocessor includes the second microprocessor chip and SPWM waveform generators, described second micro- place
The input of reason device chip is connected with the output end of the first microprocessor chip in main control microprocessor, its output end and SPWM
Waveform generator is connected, and the output end of SPWM waveform generators is connected with the input of inverter unit.The inverter unit
For three-phase inversion electric bridge, the input of described inverter unit is connected with the output end of DC bus-bar voltage control unit, inverse
The output end for becoming device unit is connected with the control terminal of induction machine.Described auxiliary control microprocessor unit is according to main control microprocessor
The instruction of unit sends the SPWM signals of control three-phase inversion electric bridge, and it is inverse that three-phase inversion electric bridge provides chopper circuit to dc source
It is changed into driving induction machine three phase sine alternating current.
Further, it is electric with three-phase inversion respectively as illustrated, the current detecting unit includes three road current sampling circuits
Three output ends of bridge are connected.
The utility model also includes monitoring unit as shown in Figure 1-2, and described monitoring unit is touch control display, with master control
Serial communication is used between first microprocessor chip in microprocessor unit, communications protocol uses MODBUS rtu protocols,
It is able to can also be realized pair by touch control display by real-time displays such as electric current, voltage, rotating speed, torques on touch control display
Induction machine is controlled.
Further, control device of the present utility model also includes alarm unit, and described alarm unit is LED, described
The input of alarm unit is connected with the output end of first microprocessor chip.
The advantages of general principle and principal character of the present utility model and the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model
Claimed scope is by appended claims and its equivalent thereof.
Claims (10)
- A kind of 1. induction machine row of falling roping moment control device, it is characterised in that：Including the dc source for power supply, Wei Chu Manage device power subsystem, DC bus-bar voltage control unit, microprocessor unit, voltage sampling unit, current detecting unit, rotating speed Detection unit and inverter unit；The input with power supply of microprocessor unit and DC bus-bar voltage control unit respectively of the output end of described dc source End is connected, to provide dc source；The output end of the power supply of microprocessor unit is connected with the power end of microprocessor unit；The microprocessor unit Output end of the input respectively with voltage sampling unit, current detecting unit and rotation speed detection unit is connected, its data transmission terminal It is connected with the data transmission terminal of DC bus-bar voltage control unit, its output end is connected with the input of inverter unit；It is described Current detecting unit and rotation speed detection unit are respectively used to be connected with induction machine, gather the electric current and motor of induction machine stator Rotating speed；The output end of the DC bus-bar voltage control unit is connected with the input of inverter unit；The output end of the inverter unit is used to be connected with induction machine.
- A kind of 2. induction machine row of falling roping moment control device according to claim 1, it is characterised in that：The direct current Busbar voltage control unit includes the current foldback circuit and chopper circuit being sequentially connected, the input of the current foldback circuit It is connected with the output end of dc source.
- A kind of 3. induction machine row of falling roping moment control device according to claim 2, it is characterised in that：Described is micro- Processor unit includes main control microprocessor unit and auxiliary control microprocessor unit；Described main control microprocessor unit includes first microprocessor chip and PWM waveform generator, described first micro- place Output end of the device chip respectively with current detecting unit, rotation speed detection unit and voltage sampling unit is managed to be connected, its output end with The input of PWM waveform generator is connected；The output end of the PWM waveform generator is connected with the input of chopper circuit；Described auxiliary control microprocessor includes the second microprocessor chip and SPWM waveform generators, the second described microprocessor The input of chip is connected with the output end of first microprocessor chip, and its output end is connected with SPWM waveform generators, SPWM The output end of waveform generator is connected with the input of inverter unit.
- A kind of 4. induction machine row of falling roping moment control device according to claim 1 or 2, it is characterised in that：It is described Inverter unit is three-phase inversion electric bridge, and the current detecting unit includes three road current sampling circuits, respectively with three-phase inversion Three output ends of electric bridge are connected.
- A kind of 5. induction machine row of falling roping moment control device according to claim 4, it is characterised in that：The electric current Sample circuit is sampling resistor.
- A kind of 6. induction machine row of falling roping moment control device according to claim 1 or 2, it is characterised in that：It is described Power supply of microprocessor unit is that DC/DC is depressured chip.
- A kind of 7. induction machine row of falling roping moment control device according to claim 1 or 2, it is characterised in that：Also wrap Monitoring unit is included, the data transmission terminal of the monitoring unit is connected with the data transmission terminal of main control microprocessor unit.
- A kind of 8. induction machine row of falling roping moment control device according to claim 7, it is characterised in that：The monitoring Unit is touch control display, and it uses serial communication between main control microprocessor unit.
- A kind of 9. induction machine row of falling roping moment control device according to claim 2, it is characterised in that：Also include report Alert unit, the input of the alarm unit are connected with the output end of main control microprocessor unit.
- A kind of 10. induction machine row of falling roping moment control device according to claim 1 or 2, it is characterised in that：It is described Rotation speed detection unit is angular transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721139882.5U CN207166389U (en) | 2017-09-07 | 2017-09-07 | A kind of induction machine row of falling roping moment control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721139882.5U CN207166389U (en) | 2017-09-07 | 2017-09-07 | A kind of induction machine row of falling roping moment control device |
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| Publication Number | Publication Date |
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| CN207166389U true CN207166389U (en) | 2018-03-30 |
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| CN201721139882.5U Active CN207166389U (en) | 2017-09-07 | 2017-09-07 | A kind of induction machine row of falling roping moment control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116455272A (en) * | 2023-04-20 | 2023-07-18 | 南京玻璃纤维研究设计院有限公司 | Yarn tension control circuit and method |
-
2017
- 2017-09-07 CN CN201721139882.5U patent/CN207166389U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116455272A (en) * | 2023-04-20 | 2023-07-18 | 南京玻璃纤维研究设计院有限公司 | Yarn tension control circuit and method |
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