CN115108401A - Method for measuring take-up length, frequency converter, and take-up control method and system - Google Patents
Method for measuring take-up length, frequency converter, and take-up control method and system Download PDFInfo
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- CN115108401A CN115108401A CN202210820057.0A CN202210820057A CN115108401A CN 115108401 A CN115108401 A CN 115108401A CN 202210820057 A CN202210820057 A CN 202210820057A CN 115108401 A CN115108401 A CN 115108401A
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- 238000004804 winding Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 5
- 230000003993 interaction Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 description 8
- 238000005259 measurement Methods 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000004040 coloring Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
- B65H63/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
- B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
- B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H61/00—Applications of devices for metering predetermined lengths of running material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
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Abstract
The embodiment of the invention discloses a method for measuring a take-up length, a frequency converter, a take-up control method and a system. The metering method is applied to a frequency converter and comprises the following steps: obtaining the perimeter of the main traction roller according to the diameter of the main traction roller; according to the resolution and the subdivision rate of a main traction roller encoder, the number of subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle is obtained; obtaining the length corresponding to one subdivided pulse according to the circumference of the main traction roller and the number of the subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle; and receiving the subdivided pulses fed back by the main traction roller encoder, recording the number of the current subdivided pulses, and obtaining the paying-off length corresponding to the current take-up length according to the length corresponding to one subdivided pulse and the number of the current subdivided pulses. According to the technical scheme in the embodiment of the invention, the automatic metering of the take-up length can be realized.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a method for measuring a take-up length, a frequency converter, a take-up control method and a system.
Background
In the winding and unwinding application of the cable industry, the winding length needs to be measured, and when a wire is broken or a disk is replaced, the measurement value needs to be reset to start new winding length measurement. At present, the measurement of the take-up length is generally finished by a special meter counter. However, it has the following two problems: 1) the configuration of a special meter counter requires more cost; 2) the mechanical design needs to consider the installation problem of the meter counter, which is not suitable for the occasions with particularly thin cables (such as optical fibers) and the occasions with particularly high speed (such as 3000 m/min); in addition, the meter counter is relatively slippery and the change in the outer diameter of the cable affects the accuracy, which makes the metering accuracy low, typically between 1% and 2%.
To this end, those skilled in the art are also working to find other metering and clearing schemes for the length of the stub.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a method for measuring a take-up length and a method for controlling take-up, and provides a frequency converter and a take-up control system, so as to implement automatic measurement of a take-up length, reduce cost, and improve measurement accuracy of a take-up length.
The method for measuring the take-up length provided by the embodiment of the invention is applied to a frequency converter; the method comprises the following steps: obtaining the perimeter of the main traction roller according to the diameter of the main traction roller; according to the resolution and the subdivision rate of a main traction roller encoder, the number of subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle is obtained; obtaining the length corresponding to one subdivided pulse according to the circumference of the main traction roller and the number of the subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle; receiving the subdivision pulse fed back by the main traction roller encoder, and recording to obtain the current subdivision pulse number; and reading the current subdivided pulse number, and obtaining the paying-off length corresponding to the current take-up length according to the length corresponding to the subdivided pulse and the current subdivided pulse number.
The take-up control method provided in the embodiment of the invention comprises the following steps: obtaining the perimeter of the main traction roller according to the diameter of the main traction roller; according to the resolution and the subdivision rate of a main traction roller encoder, the number of subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle is obtained; obtaining the length corresponding to one subdivided pulse according to the circumference of the main traction roller and the number of the subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle; receiving the subdivided pulses fed back by the main traction roller encoder, recording the number of the current subdivided pulses, and obtaining the paying-off length corresponding to the current take-up length according to the length corresponding to one subdivided pulse and the number of the current subdivided pulses; and controlling the take-up speed according to the pay-off length to realize fixed-length take-up.
The frequency converter provided in the embodiment of the invention comprises: the first module is used for obtaining the perimeter of the main traction roller according to the diameter of the main traction roller; according to the resolution and the subdivision rate of a main traction roller encoder, the number of subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle is obtained; obtaining the length corresponding to one subdivided pulse according to the circumference of the main traction roller and the number of the subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle; the second module is used for receiving the subdivision pulses fed back by the main traction roller encoder and recording the number of the current subdivision pulses; and the third module is used for reading the current subdivided pulse number from the second module and obtaining the paying-off length corresponding to the current take-up length according to the length corresponding to the subdivided pulse and the current subdivided pulse number.
The take-up control system provided in the embodiment of the invention comprises: the frequency converter is used for obtaining the perimeter of the main traction roller according to the diameter of the main traction roller; according to the resolution and the subdivision rate of a main traction roller encoder, the number of subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle is obtained; according to the circumference of the main traction roller and the number of the subdivision pulses generated by the main traction roller encoder when the main traction roller rotates for a circle, the length corresponding to one subdivision pulse is obtained; receiving the subdivided pulses fed back by the main traction roller encoder, recording the number of the current subdivided pulses, and obtaining the paying-off length corresponding to the current take-up length according to the length corresponding to one subdivided pulse and the number of the current subdivided pulses; and the control device is used for controlling the take-up speed according to the pay-off length so as to realize fixed-length take-up.
According to the scheme, the length corresponding to the subdivided pulse is obtained through the main traction roller frequency converter based on the circumference of the main traction roller, the resolution and the subdivision rate of the main traction roller encoder, the current subdivided pulse number is obtained through recording the subdivided pulse fed back by the main traction roller encoder, and the pay-off length corresponding to the current take-up length is obtained according to the length corresponding to the subdivided pulse and the current subdivided pulse number, so that the automatic metering of the take-up length is realized.
Furthermore, when a wire break or a disk change occurs, the pulse counting of the encoder is cleared by the frequency converter of the main traction roller, so that the re-metering of the wire take-up can be started.
In addition, after the paying-off length corresponding to the take-up length is obtained, the take-up speed is controlled according to the corresponding relation between the paying-off length and the take-up speed, and therefore fixed-length take-up can be achieved.
Drawings
The foregoing and other features and advantages of the invention will become more apparent to those skilled in the art to which the invention relates upon consideration of the following detailed description of a preferred embodiment of the invention with reference to the accompanying drawings, in which:
fig. 1 is a schematic diagram of an application scenario in an embodiment of the present invention.
Fig. 2 is a schematic view of a take-up speed control in the embodiment of the invention.
Fig. 3 is an exemplary structural diagram of a frequency converter of a main pulling roll in an embodiment of the invention.
Fig. 4 is an exemplary flowchart of a method for measuring a take-up length according to an embodiment of the present invention.
Fig. 5 is an exemplary flowchart of the wire rewinding control method in the embodiment of the present invention.
Wherein the reference numbers are as follows:
Detailed Description
In the embodiment of the invention, in order to realize automatic metering and zero clearing of the take-up length, the method considers that a main traction roller frequency converter is utilized to process a main traction roller encoder signal, and then the automatic metering of the take-up length is realized by combining the circumference of the main traction roller; when the wire is broken or the disk is changed, the frequency converter of the main traction roller realizes zero clearing of the pulse count of the encoder, so that the re-metering of the wire take-up is started.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by referring to the following examples.
Fig. 1 is a schematic diagram of an application scenario in an embodiment of the present invention. As shown in fig. 1, the application scenario includes: the device comprises a pay-off reel 1, a pay-off speed reducer 2, a pay-off motor 3, a pay-off encoder 4, a pay-off frequency converter 5, a coloring device 6, a first dancing roller 7, a first drying lamp tube 8, a second drying lamp tube 9, a main traction roller 10, a main traction roller motor 11, a main traction roller encoder 12, a main traction roller frequency converter 13, a second dancing roller 14, a take-up reel 15, a take-up speed reducer 16, a take-up motor 17, a take-up encoder 18, a take-up frequency converter 19, an exchanger 20 and a control device 21 which correspond to the pay-off side.
Wherein, the cable has been convoluteed on drawing drum 1, can rotate under the drive of unwrapping wire motor 3 to pay off.
The pay-off speed reducer 2 is used for transmitting the speed and the torque between the pay-off motor 3 and the pay-off reel 1 according to a fixed reduction ratio relation.
And the pay-off motor 3 is used for driving the pay-off reel 1 to rotate.
The pay-off encoder 4 is for outputting a corresponding number of pulses in accordance with the amount of rotation of the pay-off motor 3.
The pay-off frequency converter 5 is used for driving the pay-off motor 3.
The coloring device 6 is used for coloring the cable material.
The first dancing roller 7 and the second dancing roller 14 are respectively used for ensuring the tension to be stable during the winding process of the cable.
The first drying lamp 8 and the second drying lamp 9 are respectively used for curing the color of the cable material.
The main traction roller 10 is used for feeding the cable on the pay-off reel 1 to the direction of the take-up reel 15 under the driving of a main traction roller motor 11.
The main pull roll motor 11 is used for driving the main pull roll 10 to rotate.
The main pulling roll encoder 12 is used to output the corresponding number of pulses according to the amount of rotation of the main pulling roll motor 11.
A main roll frequency converter 13 is used to process the signal from the main roll encoder 12. In this embodiment, the frequency converter 13 of the main pulling roll can calculate the length corresponding to one subdivided pulse according to the diameter of the main pulling roll, the resolution and the subdivision rate of the encoder of the main pulling roll. Specific calculation principles may include: obtaining the perimeter of the main traction roller according to the diameter of the main traction roller; according to the resolution and the subdivision rate of a main traction roller encoder, the number of subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle is obtained; and obtaining the length corresponding to one subdivided pulse according to the circumference of the main traction roller and the number of the subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle. Furthermore, the main pulling roll frequency converter 13 may receive the subdivided pulses fed back by the main pulling roll encoder, record the current subdivided pulse number, and obtain the pay-off length corresponding to the current take-up length according to the length corresponding to the subdivided pulse and the current subdivided pulse number, for example, a value of R4653 of the frequency converter may be read for a certain type of main pulling roll frequency converter 13. In addition, the main traction roller frequency converter 13 may clear the current number of divided pulses according to a clear signal when receiving the clear signal from the control device 21. In particular, some models of the main pull roll frequency converter 13 may be implemented by setting the reset mode to an internal parameter connection mode, such as an external BICO mode, for example, the parameter P4652.0 of the main pull roll frequency converter 13 may be set to 2. When a wire break occurs or a disk replacement is needed, the reset signal of the P4655 interconnection is 1, and the current number of the subdivision pulses is cleared, i.e. R4653 is 0.
In addition, in some embodiments, the clear signal may be triggered by the control device 21, or a reset button may be coupled to a terminal of the main pull roll frequency converter 13 and a clear signal may be triggered by pressing the reset button.
The take-up reel 15 is driven by a take-up motor 17 to rotate so as to take up wires.
The take-up speed reducer 16 is used for transmitting the speed and the torque between the take-up motor 17 and the take-up reel 15 according to a fixed reduction ratio relation.
The take-up motor 17 is used for driving the take-up reel 15.
The take-up encoder 18 is configured to output a corresponding number of pulses according to a rotation amount of the take-up motor 17.
The wire take-up frequency converter 19 is used for driving the wire take-up motor 17.
The switch 20 is used for exchanging information between the respective inverters and the control device 21.
The control device 21 is used for information interaction with each frequency converter. For example, in this embodiment, the control device 21 may send a clear signal to the main pull roll frequency converter 13 when a wire break occurs or a disk change is required. In addition, after the main traction roller frequency converter 13 determines the paying-off length, the wire winding speed can be controlled according to the paying-off length so as to realize fixed-length wire winding. For example, the specific control process may be as shown in fig. 2, where the abscissa in fig. 2 is the take-up length L, and the ordinate is the take-up speed V. As can be seen, the control process may include: when the paying-off length is smaller than a first length threshold value L1, controlling the wire rewinding speed to be a first set speed V1; when the paying-off length is greater than a first length threshold value L1 and less than a second length threshold value L2, controlling the wire take-up speed to be a second set speed V2; when the paying-off length is greater than a second length threshold value L2, controlling the wire take-up speed to be a third set speed V3; and determining to perform fixed-length cutting and disc changing operations when the pay-off length is equal to a third length threshold value L3. In the present embodiment, the first length threshold value L1 is smaller than the second length threshold value L2 and smaller than the third length threshold value L3, and the third set speed V3 is smaller than the first set speed V1 and smaller than the second set speed V2.
In this embodiment, the fixed-length wire rewinding means that a fixed length is set for wire rewinding control. Such as 100 meters, 500 meters, 1000 meters, 50000 meters, etc., according to the actual situation.
The process of controlling the take-up speed may be that the take-up speed is determined according to the pay-off length, and the rotation speed of the take-up motor 17 is controlled by the take-up frequency converter 19 according to the determined take-up speed.
In a specific implementation, the control device 21 may be a Programmable Logic Controller (PLC) or a device including a PLC and a human-computer interaction module.
Therefore, in the embodiment of the invention, the metering of the paying-off length corresponding to the take-up length is realized through the main traction roller frequency converter, and the take-up speed control of fixed-length take-up is realized through the mutual cooperation of the main traction roller frequency converter and the control device.
In addition, the internal structure of the main pull roll frequency converter 13 may be implemented in various ways, one of which is shown in fig. 3. As shown in fig. 3, the main pull roll frequency converter 13 may include: a first module 301, a second module 302, and a third module 303. Moreover, in some embodiments, a fourth module 304 may be further included.
The first module 301 is configured to calculate a length corresponding to a sub-divided pulse according to a diameter of the main pull roll, a resolution of an encoder of the main pull roll, and a sub-dividing rate. Specific calculation principles may include: obtaining the perimeter of the main traction roller according to the diameter of the main traction roller; according to the resolution and the subdivision rate of a main traction roller encoder, the number of subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle is obtained; and obtaining the length corresponding to one subdivided pulse according to the circumference of the main traction roller and the number of the subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle.
The second module 302 is configured to receive the subdivided pulses fed back by the main pull roll encoder, and record the number of the current subdivided pulses.
The third module 303 is configured to read the recorded current subdivided pulse number from the second module 302, and obtain the paying-off length corresponding to the current take-up length according to the length corresponding to the subdivided pulse and the current subdivided pulse number.
The fourth module 304 is configured to receive a clear signal, and transmit the clear signal to the second module 302, so that the second module 302 clears the current number of the subdivided pulses according to the clear signal. The zero clearing signal is a zero clearing signal triggered when a wire break or disk replacement occurs.
Fig. 4 is an exemplary flowchart of a method for measuring a take-up length according to an embodiment of the present invention. The method can be applied to a main traction roller frequency converter. As shown in fig. 4, the method may include the steps of:
and S402, calculating the length corresponding to one subdivision pulse according to the diameter D of the main traction roller, the resolution K of the encoder of the main traction roller and the subdivision rate n.
In this step, the specific calculation principle may include: obtaining the perimeter pi x D of the main traction roller according to the diameter D of the main traction roller; according to the resolution and the subdivision rate of the main traction roller encoder, the number K2 of subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle is obtained n (ii) a According to the perimeter Pi x D of the main traction roller and the subdivided pulse number K x 2 generated by the encoder of the main traction roller rotating for one circle n To obtain the length corresponding to a sub-divided pulse
And S404, receiving the subdivision pulses fed back by the main traction roller encoder, and recording to obtain the current subdivision pulse number.
Step S406, reading the current number of subdivision pulses.
And step S408, obtaining the paying-off length corresponding to the current wire take-up length according to the length corresponding to the subdivided pulse and the current subdivided pulse number.
In addition, when a wire break occurs or a disc replacement is required, the method may further include, before step S406: and S405, receiving a zero clearing signal, and clearing the current subdivision pulse number according to the zero clearing signal. At this time, the pay-off length obtained in step S408 is the length after zero clearing 0.
Fig. 5 is an exemplary flowchart of a wire take-up control method in the embodiment of the present invention. The method can be applied to a wire take-up control system comprising a main traction roller frequency converter and a control device. As shown in fig. 5, the method may include the steps of:
steps S402 to S408 are executed by the frequency converter, and the detailed description thereof refers to the description in fig. 4.
And S410, controlling the take-up speed according to the pay-off length to realize fixed-length take-up.
The step S410 may be executed by the control device, and in an embodiment, a specific control process of the step may be as shown in fig. 2, where an abscissa in fig. 2 is the wire rewinding length L and an ordinate is the wire rewinding speed V. As can be seen, the control process may include:
when the paying-off length is smaller than a first length threshold value L1, controlling the wire take-up speed to be a first set speed V1;
when the paying-off length is greater than a first length threshold value L1 and less than a second length threshold value L2, controlling the wire take-up speed to be a second set speed V2;
when the paying-off length is greater than a second length threshold value L2, controlling the wire take-up speed to be a third set speed V3;
when the pay-off length is equal to a third length threshold value L3, determining to perform fixed-length cutting and disc changing operations;
in the present embodiment, the first length threshold value L1 is smaller than the second length threshold value L2 and smaller than the third length threshold value L3, and the third set speed V3 is smaller than the first set speed V1 and smaller than the second set speed V2.
According to the scheme, the length corresponding to the subdivided pulse is obtained through the main traction roller frequency converter based on the circumference of the main traction roller, the resolution and the subdivision rate of the main traction roller encoder, the current subdivided pulse number is obtained through recording the subdivided pulse fed back by the main traction roller encoder, and the pay-off length corresponding to the current take-up length is obtained according to the length corresponding to the subdivided pulse and the current subdivided pulse number, so that the automatic metering of the take-up length is realized.
Furthermore, when a wire break or a disk change occurs, the pulse counting of the encoder is cleared by the frequency converter of the main traction roller, so that the re-metering of the wire take-up can be started.
In addition, after the paying-off length corresponding to the take-up length is obtained, the take-up speed is controlled according to the corresponding relation between the paying-off length and the take-up speed, and therefore fixed-length take-up can be achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (11)
1. The method for measuring the take-up length is characterized by being applied to a frequency converter; the method comprises the following steps:
obtaining the perimeter of the main traction roller according to the diameter of the main traction roller; according to the resolution and the subdivision rate of a main traction roller encoder, the number of subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle is obtained;
obtaining the length corresponding to one subdivided pulse according to the circumference of the main traction roller and the number of the subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle;
receiving the subdivision pulse fed back by the main traction roller encoder, and recording to obtain the current subdivision pulse number;
and reading the recorded current subdivided pulse number, and obtaining the paying-off length corresponding to the current take-up length according to the length corresponding to the subdivided pulse and the current subdivided pulse number.
2. The method of metering take-up length of claim 1, further comprising: receiving a zero clearing signal, and clearing the current subdivision pulse number according to the zero clearing signal; the zero clearing signal is a zero clearing signal triggered when a wire break or disk replacement occurs.
3. The winding control method is characterized by comprising the following steps:
obtaining the perimeter of the main traction roller according to the diameter of the main traction roller; according to the resolution and the subdivision rate of a main traction roller encoder, the number of subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle is obtained;
obtaining the length corresponding to one subdivided pulse according to the circumference of the main traction roller and the number of the subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle;
receiving the subdivided pulses fed back by the main traction roller encoder, recording the number of the current subdivided pulses, and obtaining the paying-off length corresponding to the current take-up length according to the length corresponding to one subdivided pulse and the number of the current subdivided pulses;
and controlling the take-up speed according to the paying-off length to realize fixed-length take-up.
4. The wire take-up control method as claimed in claim 3, wherein the controlling of the wire take-up speed according to the pay-off length to achieve fixed-length wire take-up comprises:
when the paying-off length is smaller than a first length threshold value, controlling the take-up speed to be a first set speed;
when the paying-off length is greater than a first length threshold and less than a second length threshold, controlling the take-up speed to be a second set speed;
when the paying-off length is larger than a second length threshold value, controlling the take-up speed to be a third set speed;
when the pay-off length is equal to a third length threshold value, fixed-length cutting and disc changing operations are determined;
the first length threshold value is smaller than the second length threshold value and smaller than the third length threshold value, and the third set speed is smaller than the first set speed and smaller than the second set speed.
5. The wire take-up control method as claimed in claim 3 or 4, further comprising: triggering a zero clearing signal when a wire break occurs or a disk needs to be changed;
and clearing the current subdivision pulse number according to the clear signal.
6. Frequency converter, its characterized in that includes:
the first module is used for obtaining the circumference of the main traction roller according to the diameter of the main traction roller; according to the resolution and the subdivision rate of a main traction roller encoder, the number of subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle is obtained; obtaining the length corresponding to one subdivided pulse according to the circumference of the main traction roller and the number of the subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle;
the second module is used for receiving the subdivision pulses fed back by the main traction roller encoder and recording the number of the current subdivision pulses;
and the third module is used for reading the recorded current subdivided pulse number from the second module and obtaining the paying-off length corresponding to the current take-up length according to the length corresponding to the subdivided pulse and the current subdivided pulse number.
7. The frequency converter of claim 6, further comprising:
the fourth module is used for receiving a zero clearing signal and transmitting the zero clearing signal to the second module; the zero clearing signal is a zero clearing signal triggered when a wire break or disk replacement occurs;
and the second module clears the current subdivision pulse number according to the clear signal.
8. Receive line control system, its characterized in that includes:
the frequency converter is used for obtaining the perimeter of the main traction roller according to the diameter of the main traction roller; according to the resolution and the subdivision rate of a main traction roller encoder, the number of subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle is obtained; obtaining the length corresponding to one subdivided pulse according to the circumference of the main traction roller and the number of the subdivided pulses generated by the main traction roller encoder when the main traction roller rotates for one circle; receiving the subdivided pulses fed back by the main traction roller encoder, recording the number of the current subdivided pulses, and obtaining the paying-off length corresponding to the current take-up length according to the length corresponding to one subdivided pulse and the number of the current subdivided pulses;
and the control device is used for controlling the take-up speed according to the paying-off length so as to realize fixed-length take-up.
9. The take-up control system as claimed in claim 8, wherein the control device controls the take-up speed to a first set speed when the payout length is less than a first length threshold; when the paying-off length is greater than a first length threshold and less than a second length threshold, controlling the take-up speed to be a second set speed; when the paying-off length is larger than a second length threshold value, controlling the take-up speed to be a third set speed; when the pay-off length is equal to a third length threshold value, determining to perform fixed-length cutting and disc changing operation;
the first length threshold value is smaller than the second length threshold value and smaller than the third length threshold value, and the third set speed is smaller than the first set speed and smaller than the second set speed.
10. The take-up control system as claimed in claim 8, wherein said control means is further adapted to send a clear signal to said frequency converter when a wire break occurs or a disk change is required;
and the frequency converter is used for clearing the current subdivision pulse number according to the clear signal.
11. The take-up control system according to any one of claims 8 to 10, wherein the control device is a programmable logic controller or a device comprising a programmable logic controller and a human-computer interaction module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210820057.0A CN115108401A (en) | 2022-07-13 | 2022-07-13 | Method for measuring take-up length, frequency converter, and take-up control method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210820057.0A CN115108401A (en) | 2022-07-13 | 2022-07-13 | Method for measuring take-up length, frequency converter, and take-up control method and system |
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| CN115108401A true CN115108401A (en) | 2022-09-27 |
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| CN202210820057.0A Pending CN115108401A (en) | 2022-07-13 | 2022-07-13 | Method for measuring take-up length, frequency converter, and take-up control method and system |
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| CN (1) | CN115108401A (en) |
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| US3988879A (en) * | 1974-07-08 | 1976-11-02 | Nuova San Giorgio S.P.A. | Method and apparatus for yarn length measuring |
| US4307282A (en) * | 1978-12-09 | 1981-12-22 | Estel Hoesch Werke Ag | Method of and arrangement for applying indicia to a surface of a moving workpiece |
| US5107779A (en) * | 1990-09-26 | 1992-04-28 | G.M. Pfaff Aktiengesellschaft | Process and device for recognizing missed stitches during the operation of a sewing machine |
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| US20110226885A1 (en) * | 2010-03-22 | 2011-09-22 | Wafios Aktiengesellschaft | Device for controlling the drive of a reel |
| CN106672705A (en) * | 2016-12-14 | 2017-05-17 | 安徽莎沃斯服饰有限公司 | Yarn winding coil counting device and counting method thereof |
| CN111532895A (en) * | 2020-03-27 | 2020-08-14 | 索铌格机械(天津)有限公司 | Intelligent paying-off method and system |
| CN114411841A (en) * | 2021-12-31 | 2022-04-29 | 太原重工股份有限公司 | Limit control method of variable-frequency speed-regulating mining excavator |
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| US3988879A (en) * | 1974-07-08 | 1976-11-02 | Nuova San Giorgio S.P.A. | Method and apparatus for yarn length measuring |
| US4307282A (en) * | 1978-12-09 | 1981-12-22 | Estel Hoesch Werke Ag | Method of and arrangement for applying indicia to a surface of a moving workpiece |
| US5107779A (en) * | 1990-09-26 | 1992-04-28 | G.M. Pfaff Aktiengesellschaft | Process and device for recognizing missed stitches during the operation of a sewing machine |
| JPH09227023A (en) * | 1996-02-23 | 1997-09-02 | Howa Mach Ltd | Control method for hip wound length in spinning machine and device thereof |
| US20110226885A1 (en) * | 2010-03-22 | 2011-09-22 | Wafios Aktiengesellschaft | Device for controlling the drive of a reel |
| CN102233396A (en) * | 2010-03-22 | 2011-11-09 | 瓦菲欧斯公司 | Device for controlling the drive of a reel |
| CN106672705A (en) * | 2016-12-14 | 2017-05-17 | 安徽莎沃斯服饰有限公司 | Yarn winding coil counting device and counting method thereof |
| CN111532895A (en) * | 2020-03-27 | 2020-08-14 | 索铌格机械(天津)有限公司 | Intelligent paying-off method and system |
| CN114411841A (en) * | 2021-12-31 | 2022-04-29 | 太原重工股份有限公司 | Limit control method of variable-frequency speed-regulating mining excavator |
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