CN104143944B - Decator frequency converter frequency output intent, decator frequency converter and decator - Google Patents
Decator frequency converter frequency output intent, decator frequency converter and decator Download PDFInfo
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- CN104143944B CN104143944B CN201410327751.4A CN201410327751A CN104143944B CN 104143944 B CN104143944 B CN 104143944B CN 201410327751 A CN201410327751 A CN 201410327751A CN 104143944 B CN104143944 B CN 104143944B
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Abstract
A kind of decator frequency converter frequency output intent, change frequency converter output frequency by calculating the change of winding up roller coil diameter, to keep the linear velocity constant of material, test the speed roller and speed measuring coder need not additionally be increased, hardware and software development cost is reduced, the structure design difficulty of decator is also reduced.Invention additionally discloses a kind of decator frequency converter and decator.
Description
Technical field
The present invention relates to frequency converter field, more particularly to a kind of decator frequency converter frequency output intent, decator frequency conversion
Device and decator.
Background technology
, it is necessary to cloth carries out folding and unfolding between steaming roller and infantees roller in decator, when roller is steamed as let off roll, infantees
Roller is used as in wind-up roll；When infantees roller is used as let off roll, roller is steamed as wind-up roll；Two windings up roller drive by motor.At some
In decator, the motor of two rollers is by Frequency Converter Control.During folding and unfolding, a winding up roller Frequency Converter Control cloth folding and unfolding speed,
The Frequency Converter Control cloth tension of another winding up roller is constant.In most of decator, the frequency converter of folding and unfolding speed is controlled only to control electricity
Machine running speed is constant, but the cloth due to coiling on winding up roller change, (winding up roller is straight plus cloth to cause cloth coil diameter
Footpath) change, so as to cause in the case of winding up roller invariablenes turning speed, the actual linear velocity of cloth is simultaneously non-constant.Small part is steamed
Machine adds additional test the speed roller and speed measuring coder to reach the constant of cloth linear velocity, by the signal of speed measuring coder
PLC or frequency converter are fed back to, control by permanent velocity is carried out by PLC or frequency converter.But can so increase test the speed roller and the volume that tests the speed
The hardware cost of code device, increases the roller that tests the speed and also increased difficulty to the structure design of whole decator, while the program development of PLC
Also increase the development difficulty of decator.
The content of the invention
Based on this, it is necessary to provide a kind of low cost for the decator frequency converter frequency that controls cloth linear velocity constant
Output intent, and a kind of decator frequency converter and decator are provided.
A kind of decator frequency converter frequency output intent, the required linear velocity of material is v, and output frequency is needed for frequency converter
F, motor rotation frequency is F0, and register ratio is K, and monolayer material thickness is d, diameter of the winding up roller plus material when initial
It is D0, motor number of pole-pairs is P, including step：
Obtain current motor speed V1；
Obtain frequency converter running time T；
The current linear velocity v0 of material is obtained, wherein：
V0=π * (D0+2*d*V1*T/K) * V1/K；
Frequency regulating amount Fd is obtained by v and v0；
Output frequency F needed for frequency converter is obtained and exports, wherein：F=F0+Fd.
It is described to include the step of obtain current motor speed V1 wherein in one embodiment：
Obtain the parameter of electric machine；
Detect the output current value of frequency converter；
The output current value is transformed to the current value under two-phase rest frame by Clarke transform；
Motor rotation frequency F0 and current motor speed V1 is obtained by vector control algorithm.
Wherein in one embodiment, the parameter of electric machine includes：Rated power, rated voltage, rated current, specified frequency
Rate, rated speed, motor stator resistance, rotor resistance, leakage inductance, mutual inductance, no-load current.
Wherein in one embodiment, the output current value is the three-phase electricity flow valuve of motor.
Wherein in one embodiment, the frequency converter running time T is obtained by Interruption method.
A kind of decator frequency converter, the required linear velocity of material is v, and output frequency needed for frequency converter is F, motor rotary frequency
Rate is F0, and register ratio is K, and monolayer material thickness is d, and winding up roller adds a diameter of D0 of the material, including speed when initial
Degree identification module, timing module, computing module and rate-adaptive pacemaker module are the Speed identification module, the timing module, described
Rate-adaptive pacemaker module is communicated to connect with the computing module respectively；
The Speed identification module is used to obtain current motor speed V1；
The timing module is used to obtain frequency converter running time T；
The computing module is used to calculate the current linear velocity v0 and frequency regulating amount Fd of material, wherein：
V0=π * (D0+2*d*V1*T/K) * V1/K；
The computing module is used to obtain output frequency F needed for frequency converter, wherein：F=F0+Fd；
The rate-adaptive pacemaker module is used to export output frequency F needed for frequency converter.
Wherein in one embodiment, the Speed identification module includes parameter acquiring unit, detection unit and calculates single
Unit, the parameter acquiring unit, the detection unit are communicated to connect with the computing unit respectively；
The parameter acquiring unit is used to obtain the parameter of electric machine；
The detection unit is used to detect the output current value of frequency converter；
The computing unit is used to that the output current value is transformed under two-phase rest frame by Clarke transform
Current value；
The computing unit is additionally operable to obtain motor rotation frequency F0 and current motor speed by vector control algorithm
V1。
Wherein in one embodiment, the timing module includes timer.
A kind of decator, including above-mentioned decator frequency converter.
Wherein in one embodiment, above-mentioned decator also includes space vector pulse width modulation equipment and SPM
Equipment, the decator frequency converter is used for defeated for needed for the space vector pulse width modulation equipment provides the decator frequency converter
Go out frequency F, the space vector pulse width modulation equipment is used for described in the output frequency F controls according to needed for the decator frequency converter
SPM equipment, the SPM equipment is used for controlled motor.
Above-mentioned decator frequency converter frequency output intent, decator frequency converter and decator, by calculating winding up roller coil diameter
Change to change frequency converter output frequency, to keep the linear velocity constant of material, it is not necessary to extra to increase test the speed roller and the volume that tests the speed
Code device, reduces hardware and software development cost, also reduces the structure design difficulty of decator.
Brief description of the drawings
Fig. 1 is the flow chart of the decator frequency converter frequency output intent of an embodiment；
Fig. 2 is the flow chart for obtaining current motor speed V1 of an embodiment；
Fig. 3 is the module map of the decator frequency converter of an embodiment；
Fig. 4 is the module map of the Speed identification module of an embodiment；
Fig. 5 is the module map of the decator of an embodiment.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the invention is described in detail.In being described below, symbol * generations
Table multiplication sign, symbol/represent the division sign.
Fig. 1 is the flow chart of the decator frequency converter frequency output intent of an embodiment.
See Fig. 1, the required linear velocity of material is v, and output frequency needed for frequency converter is F, and motor rotation frequency is F0, machinery
Gearratio is K, and monolayer material thickness is d, and, plus a diameter of D0 of the material, a kind of decator frequency converter is frequently for winding up roller when initial
Rate output intent, including step：
Step S100：Obtain current motor speed V1.Current winding up roller rotating speed is obtained by current motor speed V1
V2, wherein V2=V1/K.Current motor speed V1 and current winding up roller rotating speed V2 be all with " revolution/time " be unit,
Time can be point.
Step S200：Obtain frequency converter running time T.
Step S300：The current linear velocity v0 of material is obtained, wherein：
V0=π * (D0+2*d*V1*T/K) * V1/K.
Step S400：Frequency regulating amount Fd is obtained by v and v0.
Step S500：Output frequency F needed for frequency converter is obtained and exports, wherein：F=F0+Fd.
The acquisition process of v0 is as follows in step S300：Obtain the number of plies C, wherein C=V2*T of the material on winding up roller.
Then diameter D, wherein D=D0+2*d*C of the winding up roller plus material are obtained.Then by formula v0=π * D*V2, v0=π * are obtained
(D0+2*d*V1*T/K)*V1/K。
Motor rotation frequency be F0 just start when, can be obtained by formula F 0=0.
Above-mentioned decator frequency converter frequency output intent, frequency converter output frequency is changed by calculating the change of winding up roller coil diameter
Rate, to keep the linear velocity constant of material, it is not necessary to extra to increase test the speed roller and speed measuring coder, reduces hardware and software and opens
Hair cost, also reduces the structure design difficulty of decator.
Winding up roller is in the present embodiment wind-up roll, motor is the motor for driving winding up roller to rotate.In other embodiments, may be used
It is wind-up roll or let off roll to select with according to actual demand.In the present embodiment monolayer material thickness for d can be advance
Determine.
In step S100, Fig. 2 is seen, include the step of obtain current motor speed V1：
Step S110：Obtain the parameter of electric machine.The parameter of electric machine includes：Rated power, rated voltage, rated current, specified frequency
Rate, rated speed, motor stator resistance, rotor resistance, leakage inductance, mutual inductance, no-load current.When just starting, can be by frequency converter
Guidance panel is input into the name plate rating of motor, such as rated power, rated voltage, rated current, rated frequency, rated speed.So
Afterwards by being built in stator resistance, rotor resistance, leakage inductance, mutual inductance, the zero load of the parameter self-tuning gain-of-function motor of frequency converter
The parameters such as electric current.
Step S120：Detect the output current value of frequency converter.Motor two-phase current is detected by phase current sensing circuit
Out, then according to three-phase current sum of zero, third phase electric current is obtained.
Step S130：Output current value is transformed to the current value under two-phase rest frame by Clarke transform.
Step S140：Motor rotation frequency F0 and current motor speed V1 is obtained by vector control algorithm.By two
Electric current input vector control module under phase rest frame, by vector control algorithm identifying motor speed, obtains electricity
Machine speed F0 and current motor speed V1.
In step S200, frequency converter running time T can be obtained by Interruption method.
Invention additionally discloses a kind of decator frequency converter and decator.
See Fig. 3, a kind of decator frequency converter, the required linear velocity of material is v, and output frequency needed for frequency converter is F, motor
Speed is F0, and register ratio is K, and monolayer material thickness is d, and winding up roller adds a diameter of D0 of the material when initial,
Including Speed identification module 100, timing module 200, computing module 300 and rate-adaptive pacemaker module 400, Speed identification module 100,
Timing module 200,400 rate-adaptive pacemaker modules are communicated to connect with computing module 200 respectively.
Speed identification module 100 is used to obtain current motor speed V1.It is additionally operable to obtain current winding up roller rotating speed V2, its
Middle V2=V1/K.
Timing module 200 is used to obtain frequency converter running time T.Timing module 200 includes timer in the present embodiment.
Computing module 300 is used to calculate the current linear velocity v0 and frequency regulating amount Fd of material, wherein：
V0=π * (D0+2*d*V1*T/K) * V1/K.The acquisition process of v0 is as follows：Material of the acquisition on winding up roller
Number of plies C, wherein C=V2*T.Then diameter D, wherein D=D0+2*d*C of the winding up roller plus material are obtained.Then formula v0 is passed through
=π * D*V2, obtain v0=π * (D0+2*d*V1*T/K) * V1/K.Computing module 300 includes PID (Proportion
Integration Differentiation) adjuster, by the current linear velocity v0 that the required linear velocity of material is v and material
Input PID regulator, you can obtain frequency regulating amount Fd.
Computing module 300 is used to obtain output frequency F needed for frequency converter, wherein：F=F0+Fd.Motor rotation frequency is F0
When just starting, can be obtained by formula F 0=0.
Rate-adaptive pacemaker module 400 is used to export output frequency F needed for frequency converter.
See Fig. 4, Speed identification module 100 includes parameter acquiring unit 110, detection unit 120 and computing unit 130, ginseng
Number acquiring unit 110, detection unit 120 are communicated to connect with computing unit 130 respectively.
Parameter acquiring unit 110 is used to obtain the parameter of electric machine.
Detection unit 120 is used to detect the output current value of frequency converter.
Computing unit 130 is used for the electric current being transformed to output current value by Clarke transform under two-phase rest frame
Value.
Computing unit 130 is additionally operable to obtain motor rotation frequency F0 by vector control algorithm and obtain current motor turn
Fast V1.
See Fig. 5, a kind of decator, including above-mentioned decator frequency converter 10, space vector pulse width modulation (SVPWM,
Space Vector Pulse Width Modulation) equipment 20 and SPM (IPM, Intelligent
Power Module) equipment 30, decator frequency converter 10 for space vector pulse width modulation equipment 20 for providing decator frequency conversion
Output frequency F needed for device 10, space vector pulse width modulation equipment 20 is used for the output frequency F controls according to needed for decator frequency converter 10
SPM equipment 30 processed, SPM equipment 30 is used for controlled motor 40.Vector controlled mould in step S140
Block is to include space vector pulse width modulation equipment 20.
Above-mentioned decator frequency converter and decator, frequency converter output frequency is changed by calculating the change of winding up roller coil diameter,
To keep the linear velocity constant of material, it is not necessary to extra to increase test the speed roller and speed measuring coder, hardware and software exploitation is reduced
Cost, also reduces the structure design difficulty of decator.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Shield scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of decator frequency converter frequency output intent, the required linear velocity of material is v, and output frequency needed for frequency converter is F,
Motor rotation frequency is F0, and register ratio is K, and monolayer material thickness is d, and winding up roller is plus a diameter of of the material when initial
D0, it is characterised in that including step：
Obtain current motor speed V1；
Obtain frequency converter running time T；
The current linear velocity v0 of material is obtained, wherein：
V0=π * (D0+2*d*V1*T/K) * V1/K；
Frequency regulating amount Fd is obtained by v and v0；
Output frequency F needed for frequency converter is obtained and exports, wherein：F=F0+Fd.
2. decator frequency converter frequency output intent according to claim 1, it is characterised in that the current electricity of the acquisition
The step of machine rotating speed V1, includes：
Obtain the parameter of electric machine；
Detect the output current value of frequency converter；
The output current value is transformed to the current value under two-phase rest frame by Clarke transform；
Motor rotation frequency F0 and current motor speed V1 is obtained by vector control algorithm.
3. decator frequency converter frequency output intent according to claim 2, it is characterised in that the parameter of electric machine bag
Include：Rated power, rated voltage, rated current, rated frequency, rated speed, motor stator resistance, rotor resistance, leakage inductance, mutually
Sense, no-load current.
4. decator frequency converter frequency output intent according to claim 2, it is characterised in that the output current value is
The three-phase electricity flow valuve of motor.
5. decator frequency converter frequency output intent according to claim 1, it is characterised in that when the frequency converter runs
Between T obtained by Interruption method.
6. a kind of decator frequency converter, the required linear velocity of material is v, and output frequency needed for frequency converter is F, motor rotation frequency
It is F0, register ratio is K, and monolayer material thickness is d, and winding up roller is plus a diameter of D0 after the material, its feature when initial
It is, including Speed identification module, timing module, computing module and rate-adaptive pacemaker module, the Speed identification module, the meter
When module, the rate-adaptive pacemaker module respectively with the computing module communicate to connect；
The Speed identification module is used to obtain current motor speed V1；
The timing module is used to obtain frequency converter running time T；
The computing module is used to calculate the current linear velocity v0 and frequency regulating amount Fd of material, wherein：
V0=π * (D0+2*d*V1*T/K) * V1/K；
The computing module is used to obtain output frequency F needed for frequency converter, wherein：F=F0+Fd；
The rate-adaptive pacemaker module is used to export output frequency F needed for frequency converter.
7. decator frequency converter according to claim 6, it is characterised in that the Speed identification module includes parameter acquiring
Unit, detection unit and computing unit, the parameter acquiring unit, the detection unit respectively with the computing unit communication link
Connect；
The parameter acquiring unit is used to obtain the parameter of electric machine；
The detection unit is used to detect the output current value of frequency converter；
The computing unit is used for the electricity being transformed to the output current value by Clarke transform under two-phase rest frame
Flow valuve；
The computing unit is additionally operable to obtain motor rotation frequency F0 and current motor speed V1 by vector control algorithm.
8. decator frequency converter according to claim 6, it is characterised in that the timing module includes timer.
9. a kind of decator, it is characterised in that including the decator frequency converter described in any one of claim 6~8.
10. decator according to claim 9, it is characterised in that also including space vector pulse width modulation equipment and intelligence
Power model equipment, the decator frequency converter is used to provide the decator frequency conversion for the space vector pulse width modulation equipment
Output frequency F needed for device, the space vector pulse width modulation equipment is used for the output frequency F according to needed for the decator frequency converter
Controlling the SPM equipment, the SPM equipment is used for controlled motor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410327751.4A CN104143944B (en) | 2014-07-10 | 2014-07-10 | Decator frequency converter frequency output intent, decator frequency converter and decator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410327751.4A CN104143944B (en) | 2014-07-10 | 2014-07-10 | Decator frequency converter frequency output intent, decator frequency converter and decator |
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| Publication Number | Publication Date |
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| CN104143944A CN104143944A (en) | 2014-11-12 |
| CN104143944B true CN104143944B (en) | 2017-06-13 |
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| CN108415376B (en) * | 2018-03-15 | 2020-09-08 | 深圳市海浦蒙特科技有限公司 | Method and device for controlling shearing machine by frequency converter, computer equipment and storage medium |
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| US6244427B1 (en) * | 1997-09-16 | 2001-06-12 | Motion Systems, L.C. | Modular gearless motorized conveyor roller |
| JP2001018007A (en) * | 1999-07-07 | 2001-01-23 | Bridgestone Corp | Manufacture of steel wire |
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