CN111099449B - Method, device, equipment and system for determining coil diameter - Google Patents
Method, device, equipment and system for determining coil diameter Download PDFInfo
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- CN111099449B CN111099449B CN201811257982.7A CN201811257982A CN111099449B CN 111099449 B CN111099449 B CN 111099449B CN 201811257982 A CN201811257982 A CN 201811257982A CN 111099449 B CN111099449 B CN 111099449B
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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
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of 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
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
- B65H75/4481—Arrangements or adaptations for driving the reel or the material
- B65H75/4486—Electric motors
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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
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
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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
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/10—Size; Dimensions
- B65H2511/13—Thickness
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- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
The invention provides a method, a device, equipment and a system for determining the diameter of a coil, wherein in one embodiment, the coil is wound on a reel, the reel is driven to rotate by a motor through a speed reducer, the motor is provided with a pulse encoder, and a counting module counts pulses sent by the pulse encoder; the method comprises the following steps: acquiring a single-layer pulse number and a periodic pulse variation of a reel, wherein the single-layer pulse number is the pulse number received by a timing module when the coiled material on the reel changes by one layer, and the periodic pulse variation is the difference between the pulse number received by a counting module in the current cycle and the pulse number received by the counting module in the previous cycle; determining the coil diameter variation of the coiled material on the reel in the current cycle based on the single-layer pulse number and the periodic pulse variation according to a preset rule, wherein the preset rule is associated with the thickness of the coiled material; and determining the coil diameter current value of the coil in the current cycle according to the coil diameter variation and the coil diameter previous value of the coil. By using the technical scheme of the invention, the roll diameter value can be more accurately determined.
Description
Technical Field
The invention relates to the technical field of roll diameter calculation, in particular to a method, a device, equipment and a system for determining a roll diameter.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
Due to the requirements of the process and the product quality, the constant tension control of the winding machine set is of great importance. In the winding or unwinding process of the winding machine, the winding diameter of the coiled material can be changed in real time, and the winding diameter and tension control are influenced mutually. Therefore, the accurate determination of the coil diameter of the coiled material is an important prerequisite for ensuring the stable operation and tension control of the winding machine set.
Although the ultrasonic sensor can accurately obtain the roll diameter of the coiled material, the ultrasonic sensor is limited by high cost and is difficult to be popularized and applied in a large area. Therefore, at present, the most applied method in the field still adopts the traditional linear velocity method to calculate the roll diameter.
However, the roll diameter obtained by the linear velocity method is often inaccurate in calculation due to the influence of external factors. Specifically, the formula for calculating the roll diameter by the linear velocity method is as follows:
wherein V is linear speed m/s, i is transmission ratio of the speed reducer, n is rotating speed rpm of the motor, and D is coil diameter m. The linear velocity V is a command velocity. The rotational speed n of the motor is however an actual value, which may vary or fluctuate. This results in inaccurate roll diameter calculation.
Specifically, for example, after receiving the acceleration command, the actual rotation speed of the motor is gradually increased to follow the command rotation speed to be the same as the command rotation speed. Therefore, during acceleration, the actual rotation speed n of the motor is varied (gradually increased). Likewise, during deceleration, the actual rotational speed n of the motor is also varied (gradually decreased). When the intermediate shaft of the winding machine set slips and is locked, the actual rotating speed n of the motor fluctuates.
It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the invention.
Disclosure of Invention
Based on the foregoing defects in the prior art, embodiments of the present invention provide a method, an apparatus, a device, and a system for determining a roll diameter, which can determine a roll diameter value more accurately.
In order to achieve the above object, the present invention provides the following technical solutions.
A method for determining the diameter of a coiled material comprises the steps that the coiled material is wound on a reel, the reel is driven to rotate by a motor through a speed reducer, the motor is provided with a pulse encoder, and a counting module counts pulses sent by the pulse encoder; the method comprises the following steps: acquiring a single-layer pulse number and a period pulse variation of a scroll, wherein the single-layer pulse number is the number of layers of coiled materials on the scroll, which are counted by a timing module, and the period pulse variation is the difference between the number of pulses counted by the counting module in the current return period and the number of pulses counted by the counting module in the previous return period; determining the roll diameter variation of the coiled material on the reel in the current cycle according to a preset rule based on the single-layer pulse number and the periodic pulse variation, wherein the preset rule is associated with the thickness of the coiled material; and determining the coil diameter current value of the coil in the current cycle according to the coil diameter variation and the coil diameter previous value of the coil.
A method for determining the diameter of a coil, the coil is wound on a reel, the reel is driven to rotate by a motor through a speed reducer, and the motor is provided with a frequency converter; the method comprises the following steps: determining the number of turns of the reel rotating in the current cycle according to the output frequency of the output frequency converter of the motor; determining the coil diameter variation of the coiled material on the reel in the current loop period according to a preset rule based on the number of turns of the reel rotating in the current loop period, wherein the preset rule is associated with the thickness of the coiled material; and determining the coil diameter current value of the coil in the current cycle according to the coil diameter variation and the coil diameter previous value of the coil.
The method for determining the roll diameter, and the roll diameter determining device, equipment and system obtained under the guidance of the inventive concept of the method provided by the embodiment of the invention have the advantages that when the roll diameter is calculated, the determination of the roll diameter is not influenced by the change or fluctuation of the rotating speed of the motor, so that the roll diameter value can be determined more accurately.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may choose from the various possible shapes and proportional sizes to implement the invention as a matter of case. In the drawings:
FIG. 1 is a flow chart of a method for determining a roll diameter according to a first preferred embodiment of the present invention;
FIG. 2 is a block diagram of an apparatus for determining a roll diameter according to a first preferred embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for determining a roll diameter according to a second preferred embodiment of the present invention;
FIG. 4 is a block diagram of an apparatus for determining a roll diameter according to a second preferred embodiment of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 and 3 are flowcharts illustrating a method for determining a roll diameter according to a first preferred embodiment and a second preferred embodiment of the present invention, respectively. Although the present invention provides method steps as described in the following examples or flowcharts, more or fewer steps may be included in the method, with or without the assistance of inventive faculty. Moreover, the method logically lacks the necessary causal steps, and the order of execution of these steps is not limited to the order of execution provided in the embodiments of the present invention.
Since the coil on the reel changes by one layer, the coil diameter will change by 2 times the coil thickness. Based on the principle, the technical scheme of the invention is obtained.
In the method of determining a roll diameter according to the first preferred embodiment of the present invention, the web is wound on a reel, the reel is driven to rotate by a motor through a speed reducer, the motor is provided with a pulse encoder, and a counting module counts pulses emitted from the pulse encoder. As shown in fig. 1, the method for determining the diameter of the coil according to the first preferred embodiment of the present invention includes the following steps:
step S101: the method comprises the steps of obtaining the number of single-layer pulses and the variation of periodic pulses of a scroll, wherein the number of the single-layer pulses is the number of pulses counted by a timing module when the number of layers of coiled materials on the scroll changes by one layer, and the variation of the periodic pulses is the difference between the number of pulses counted by the counting module in the current return period and the number of pulses counted by the counting module in the previous return period.
In this embodiment, the number of single-layer pulses is the number of pulses corresponding to a change of one layer of the web on the reel, and can be calculated according to the formula PPR ═ a × B × C. The PPR is the number of single-layer pulses, A is the number of pulses corresponding to one circle of rotation of the motor, namely, in the process of one circle of rotation of the motor, the number of pulses sent by the pulse encoder and received by the counting module is used, B is the number of turns of the winding shaft which needs to rotate when the number of layers of the coiled material changes by one layer, and C is the transmission ratio of the speed reducer.
The method for determining the coil diameter is particularly suitable for calculating the coil diameter of the wire rod in the winding process, but can also be used for calculating the coil diameter of the plate material. When the coiled material is a wire, the number of turns B of the reel which need to be rotated when the number of layers of the coiled material changes by one layer can be determined according to the axial winding length of the reel and the radial size of the wire. Specifically, the axial winding length is the axial length occupied by the wire when wound on the spool, which is generally less than or equal to the axial length of the spool. The number of turns B of the spool required to rotate when the number of layers of the coil changes by one is specifically determined by the ratio of the axial winding length to the radial dimension of the wire. In addition, the number of turns B of the winding shaft required to rotate when the number of layers of the coiled material changes by one layer can be the number of turns of the winding shaft, and can also be the number of turns of the wire. When the coiled material is a plate material, the number of turns B of the winding shaft required to rotate when the number of layers of the coiled material changes by one is 1, namely, when the plate material is wound or released by one turn, the number of layers on the winding shaft changes by one.
The period pulse variation is the difference between the pulse number accumulated and counted by the counting module in the current period and the pulse number accumulated and counted by the counting module in the previous period. The current cycle and the previous cycle may use a scanning cycle of a frequency converter of the motor as a measurement unit, and specifically may be both the current cycle and the previous cycle are one scanning cycle of the frequency converter.
When the motor is in the process of acceleration and deceleration, or when the intermediate shaft of the winding machine set slips, is stuck and the like, the rotating speed of the motor changes in real time. Then, the number of pulses received by the counting module will be different in the same scanning period of the frequency converter. The counting module may count the number of pulses in each scanning period, and the counted number of pulses in each scanning period is stored. Therefore, after the number of pulses accumulated by cutting off the previous cycle is obtained through statistics, the number of pulses is compared with the number of pulses in the stored previous cycle and difference operation is carried out, and the periodic pulse variation can be obtained. Thus, the periodic pulse variation is the number of pulses in a single time period of the previous cycle, i.e. the number of pulses the motor has traveled during rotation within the duration defined by the previous cycle.
The number of pulses that the counting module can count has an upper limit value, which is related to the number of bits of the counting module. For example, when the count block is 16 bits, the upper limit value is 2^16 ^ 65536. Therefore, when the number of pulses counted by the counting module is within the upper limit value range, the periodic pulse variation can be changed according to the value of Δ P ═ UValue of next generation－UFront valueAnd (4) calculating. Wherein, Δ P is the variation of the periodic pulse, UValue of next generationFor the counting module to accumulate the counted number of pulses in the present cycle, UFront valueThe counted number of pulses is accumulated for the counting module in the previous cycle.
When the pulse number counted by the counting module exceeds the upper limit value, the counting module carries out zero clearing processing on the pulse number counted currently and restarts counting. For example, the upper limit value is 65536, and the counting module accumulates the counted pulse number U in the previous periodFront value65530. Subsequently, the number of pulses of the present loop period is increased by 10. Thus, the number of pulses counted by the counting module in the current cycle exceeds the upper limit value of 65536, and the counting module is cleared and counted again. Then the number of pulses counted by the counting module in the loop period will become 4. Thus, the amount of change of the periodic pulseNegative values result in the coil diameter calculation not being able to be performed continuously.
Therefore, when the pulse number counted by the counting module is not in the upper limit value range, the periodic pulse variation can be changed according to the value of Δ P ═ UValue of next generation－UFront value+UUpper limit value. Wherein, UUpper limit valueIs the upper limit value. For example, the upper limit value UUpper limit value65536, when the counting module accumulates the counted number of pulses U in the previous cycleFront value65530, the counted number of pulses U is accumulated in the current cycleFront value4. Then, the pulse variation of the current cycle compared to the previous cycle is Δ P-4-65530 + 65536-10. Therefore, the periodic pulse variation is a positive value, and the roll diameter calculation can be continuously carried out.
In addition, when the motor rotates in the forward direction, the number of pulses counted by the counting module should be accumulated in the forward direction. I.e. using Δ P ═ UValue of next generation－UFront valueThe calculated ap should be positive. And if Δ P ═ U is detectedValue of next generation－UFront value<And 0, the pulse number accumulated and counted by the counting module exceeds the upper limit value of the pulse number. At this time, the calculation formula of the periodic pulse variation amount Δ P is changed as follows: Δ P ═ UValue of next generation－UFront value+UUpper limit value。
Alternatively, when the motor rotates in reverse, the number of pulses counted by the counting module should be decremented in reverse. I.e. using Δ P ═ UValue of next generation－UFront valueThe calculated Δ P should be negative. And if Δ P ═ U is detectedValue of next generation－UFront value>0, it can also indicate that the number of pulses accumulated and counted by the counting module exceeds its upper limit. At this time, the calculation formula of the periodic pulse variation Δ P is also changed as follows: Δ P ═ UValue of next generation－UFront value+UUpper limit value。
Step S102: and determining the roll diameter variation of the coiled material on the reel in the current cycle according to a preset rule based on the single-layer pulse number and the periodic pulse variation, wherein the preset rule is associated with the thickness of the coiled material.
The number of single-layer pulses and the amount of periodic pulse variation are determined based on the above description, i.e. the amount of variation of the coil diameter of the coil on the reel in the previous cycle is determined according to a preset rule associated with the thickness of the coil.
Specifically, the predetermined rule is Δ D ═ Δ P × 2 × D/a × B × C. Wherein, Δ D is the change of the coil diameter, Δ P is the change of the periodic pulse, D is the thickness of the coil, a × B × C is the single-layer pulse number, a is the pulse number corresponding to one rotation of the motor, B is the number of turns of the coil shaft required to rotate when the number of layers of the coil changes one layer, and C is the transmission ratio of the reducer.
Step S103: and determining the coil diameter current value of the coil in the current cycle according to the coil diameter variation and the coil diameter previous value of the coil.
The coil diameter variation delta D of the coil material on the reel in the current cycle compared with the previous cycle is determined, namely the coil diameter variation delta D can be determinedValue of next generation＝DFront value+ Δ D determines the coil diameter pull-back value of the coil in the pull-back period. Wherein D isValue of next generationIs the coil diameter current value, DFront valueThe value is the coil diameter forward return value. In addition, the above formula is a formula for calculating the volume diameter loop value during winding. When unreeling, can be according to DValue of next generation＝DFront value- Δ D determining a coil diameter loop value of the coil in a loop cycle.
Wherein, the embodiment is used for determining the coil diameter and the current value DValue of next generationThe same applies to the determination of the diameter of the coilFront valueI.e. the reel diameter lead-back value DFront valueAlso according to the above-mentioned method for determining the coil diameter current value DValue of next generationBy the process of (1).
And (4) circulating the steps S101 to S103, namely, continuously determining the roll diameter value of the roll.
According to the method for determining the coil diameter, provided by the embodiment of the invention, the coil diameter variation of the coil on the reel in the current loop period is determined by acquiring the single-layer pulse number and the periodic pulse variation of the reel and according to the preset rule associated with the coil thickness, so that the coil diameter current value of the coil is obtained. Therefore, the coil diameter is determined without being influenced by the change or fluctuation of the rotating speed of the motor, so that the coil diameter value can be determined more accurately.
Based on the same concept, the first preferred embodiment of the present invention further provides a device for determining the roll diameter, as described in the following embodiments. Because the principle of solving the problem and the technical effect which can be obtained by the device for determining the roll diameter are similar to the method for determining the roll diameter, the implementation of the device for determining the roll diameter can refer to the implementation of the method for determining the roll diameter, and repeated details are not repeated. The term "module" used below may be implemented based on software, or based on hardware, or implemented by a combination of software and hardware.
In the apparatus for determining a roll diameter according to the first preferred embodiment of the present invention, the web is wound on a reel, the reel is rotated by a motor through a speed reducer, the motor is provided with a pulse encoder, and a counting module counts pulses emitted from the pulse encoder. As shown in fig. 2, the apparatus for determining a roll diameter according to the first preferred embodiment of the present invention includes:
the system comprises an acquisition module 101, a calculation module and a control module, wherein the acquisition module 101 is used for acquiring the single-layer pulse number and the periodic pulse variation of a scroll, the single-layer pulse number is the pulse number counted by a timing module when the number of layers of coiled materials on the scroll changes by one layer, and the periodic pulse variation is the difference between the pulse number counted by the counting module in the current loop period and the pulse number counted by the counting module in the previous loop period;
a roll diameter variation determining module 102, configured to determine, based on the number of single-layer pulses and the periodic pulse variation, a roll diameter variation of a roll material on a reel in a current cycle according to a preset rule, where the preset rule is associated with a thickness of the roll material;
and a coil diameter loop value determining module 103, configured to determine a coil diameter loop value of the coil in a loop cycle according to the coil diameter variation and a coil diameter loop value of the coil.
The first preferred embodiment of the present invention also provides an apparatus for determining a coil diameter, in which a coil material is wound on a reel, the reel is driven to rotate by a motor through a speed reducer, and the motor is provided with a pulse encoder. The apparatus comprises a processor and a memory for storing processor-executable instructions that when executed by the processor implement steps comprising: acquiring a single-layer pulse number and a period pulse variation of a scroll, wherein the single-layer pulse number is the number of layers of coiled materials on the scroll, which are counted by a timing module, and the period pulse variation is the difference between the number of pulses counted by the counting module in the current return period and the number of pulses counted by the counting module in the previous return period; determining the roll diameter variation of the coiled material on the reel in the current cycle according to a preset rule based on the single-layer pulse number and the periodic pulse variation, wherein the preset rule is associated with the thickness of the coiled material; and determining the coil diameter current value of the coil in the current cycle according to the coil diameter variation and the coil diameter previous value of the coil.
The first preferred embodiment of the present invention also provides a system for determining the diameter of a coil of material wound on a reel, the reel being driven in rotation by a motor provided with a pulse encoder through a speed reducer. The system comprises a processor and a memory for storing processor-executable instructions, which when executed by the processor perform the steps of the method of any of the above embodiments.
In a first preferred embodiment of the above method, apparatus, device and system for determining a coil diameter, the motor is provided with a pulse encoder. The present invention also provides a second preferred embodiment of a method, device, apparatus and system for determining the diameter of a coil, in which the coil is wound on a reel, the reel is driven in rotation by a motor through a speed reducer, the motor is provided with a frequency converter, but the motor is not provided with a pulse encoder. As shown in fig. 3, the method for determining the diameter of the coil according to the second preferred embodiment of the present invention includes the following steps:
step S201: and determining the number of turns of the reel rotating in the current loop period according to the output frequency of the frequency converter.
In this embodiment, the output frequency of the frequency converter is the actual frequency, not the frequency command. In fact, the output frequency of the frequency converter is greater than the frequency command, namely, a frequency slip exists between the frequency command and the frequency command, and the motor can output the torque just because of the frequency slip.
Based on the above-described principle that the coil material on the reel changes by one layer and the coil diameter changes by 2 times of the thickness of the coil material, the coil diameter change amount of the coil material in the present cycle can be determined by determining the number of rotations (or angles) of the reel in the present cycle.
The step of determining the number of turns of the reel rotating in the present loop period according to the output frequency of the frequency converter comprises:
determining the number of turns of the motor rotating in the current cycle based on the output frequency of the frequency converter and according to a unit transformation rule;
based on the number of revolutions of the motor in the present cycle, the number of revolutions of the spool in the present cycle is determined in accordance with the shaft change rule.
Wherein, the unit transformation rule is as follows:
carrying out first unit transformation on the output frequency of the frequency converter to obtain the rotating speed of the motor; the first unit transformation of the output frequency of the frequency converter to obtain the rotating speed is a relatively conventional technology and is not described herein;
performing second unit transformation on the rotating speed of the motor to obtain the radian variation of the motor in the current cycle; the second unit transformation is specifically that Δ R ═ E ═ 2 pi × F, where Δ R is the radian variation of the motor in the current cycle, E is the rotation speed of the motor, and F is the current cycle;
performing third unit transformation on the radian variation of the motor in the current cycle to obtain the number of turns of the motor rotating in the current cycle; the third unit transform is specifically rMotorΔ R/2 pi ═ E × F, where R isMotorThe number of turns of the motor in the current cycle is shown, Δ R is the radian change of the motor in the current cycle, E is the rotating speed of the motor, and F is the current cycle.
The axis transformation rule is as follows:
rreel shaft＝rMotor/(C*G)＝E*F/(C*G)；
Wherein r isReel shaftFor the number of revolutions of the reel in the current cycle, rMotorThe number of turns of the motor rotating in the current loop period is E, the rotating speed of the motor is F, the current loop period is B, the number of turns of the winding shaft required to rotate when the number of layers of the coiled material changes by one layer, C is the transmission ratio of the speed reducer, and G is the number of stages of the motor.
By means of the unit conversion, the number of the rotating turns of the reel in the current cycle can be determined through the output frequency of the frequency converter.
Step S202: and determining the coil diameter variation of the coiled material on the reel in the current loop period according to a preset rule based on the number of turns of the reel rotating in the current loop period, wherein the preset rule is associated with the thickness of the coiled material.
The preset rules are as follows:
ΔD＝2*D*E*F/(B*C*G)；
wherein, Δ D is the change of the coil diameter, D is the thickness of the coil, E x F/(B x C x G) is the number of turns of the reel rotating in the current cycle, E is the rotating speed of the motor, F is the current cycle, B is the number of turns of the reel required to rotate when the number of layers of the coil changes by one layer, C is the transmission ratio of the reducer, and G is the number of stages of the motor.
Based on the above principle that the coil diameter changes by 2 times the thickness of the coil by changing one layer, the product of the layer number change of the coil in the current loop period and the coil thickness by 2 times is the coil diameter change Δ D of the coil diameter in the current loop period.
The number of turns B of the reel required to rotate when the number of layers of the coil changes by one can be determined as described above, and will not be described herein.
Step S203: and determining the coil diameter current value of the coil in the current cycle according to the coil diameter variation and the coil diameter previous value of the coil.
Similarly, the coil diameter variation Delta D of the coil material on the reel in the current cycle is determined, namely according to DValue of next generation＝DFront value+ Δ D determines the coil diameter pull-back value of the coil in the pull-back period.
Similarly, step S201 to step S203 are repeated, i.e. the roll diameter value of the roll can be continuously determined.
The method for determining the coil diameter of the embodiment of the invention determines the number of turns of the reel rotating in the current loop period by adopting a mode of carrying out unit conversion on the output frequency of the frequency converter, determines the coil diameter variation of the coiled material on the reel in the current loop period according to a preset rule related to the thickness of the coiled material, and further obtains the coil diameter current value of the coiled material. Thus, the roll diameter is determined without being influenced by the change or fluctuation of the rotating speed of the motor, so that the roll diameter value can be accurately determined.
Based on the same concept, the second preferred embodiment of the present invention also provides a device for determining the roll diameter, as described in the following embodiments. Because the principle of solving the problem and the technical effect which can be obtained by the device for determining the roll diameter are similar to the method for determining the roll diameter, the implementation of the device for determining the roll diameter can refer to the implementation of the method for determining the roll diameter, and repeated details are not repeated. The term "module" used below may be implemented based on software, or based on hardware, or implemented by a combination of software and hardware.
In the apparatus for determining a coil diameter according to the second preferred embodiment of the present invention, the coil material is wound on a reel, the reel is driven to rotate by a motor through a speed reducer, and the motor is provided with a frequency converter, but the motor is not provided with a pulse encoder. As shown in fig. 4, the apparatus for determining a roll diameter according to the second preferred embodiment of the present invention includes:
a number-of-turns determining module 201, configured to determine, according to the output frequency of the frequency converter, the number of turns of the reel rotating in the current cycle;
a roll diameter variation determining module 202, configured to determine, based on the number of turns of the reel rotating in the previous cycle, a roll diameter variation of the coiled material on the reel in the previous cycle according to a preset rule, where the preset rule is associated with a thickness of the coiled material;
and a coil diameter loop value determining module 203, configured to determine a coil diameter loop value of the coil in a loop cycle according to the coil diameter variation and the coil diameter loop value of the coil.
The second preferred embodiment of the present invention also provides an apparatus for determining a coil diameter, in which a coil material is wound on a reel, the reel is driven to rotate by a motor through a speed reducer, and the motor is not provided with a pulse encoder. The apparatus comprises a processor and a memory for storing processor-executable instructions that when executed by the processor implement steps comprising: determining the number of turns of the reel rotating in the current cycle according to the output frequency of the frequency converter; determining the coil diameter variation of the coiled material on the reel in the current loop period according to a preset rule based on the number of turns of the reel rotating in the current loop period, wherein the preset rule is associated with the thickness of the coiled material; and determining the coil diameter current value of the coil in the current cycle according to the coil diameter variation and the coil diameter previous value of the coil.
The second preferred embodiment of the present invention also provides a system for determining the diameter of a coil of material wound on a reel, the reel being driven in rotation by a motor through a speed reducer, the motor being provided without a pulse encoder. The system comprises a processor and a memory for storing processor-executable instructions, which when executed by the processor perform the steps of the method of any of the above embodiments.
In the first and second preferred embodiments of the present invention, the memory may include physical means for storing information, typically media that digitize the information and store it in an electrical, magnetic, or optical manner. The memory according to the first and second preferred embodiments of the present invention may further include: devices that store information using electrical energy, such as RAM, ROM, etc.; devices that store information using magnetic energy, such as hard disks, floppy disks, tapes, core memories, bubble memories, usb disks; devices for storing information optically, such as CDs or DVDs. Of course, there are other ways of memory, such as quantum memory, graphene memory, and so forth.
In the first and second preferred embodiments of the present invention, the processor may be implemented in any suitable manner. For example, the processor may take the form of, for example, a microprocessor or processor and a computer-readable medium that stores computer-readable program code (e.g., software or firmware) executable by the (micro) processor, logic gates, switches, an Application Specific Integrated Circuit (ASIC), a programmable logic controller, an embedded microcontroller, and so forth.
In the 90 s of the 20 th century, improvements in a technology could clearly distinguish between improvements in hardware (e.g., improvements in circuit structures such as diodes, transistors, switches, etc.) and improvements in software (improvements in process flow). However, as technology advances, many of today's process flow improvements have been seen as direct improvements in hardware circuit architecture. Designers almost always obtain the corresponding hardware circuit structure by programming an improved method flow into the hardware circuit. Thus, it cannot be said that an improvement in the process flow cannot be realized by hardware physical modules. For example, a Programmable Logic Device (PLD), such as a Field Programmable Gate Array (FPGA), is an integrated circuit whose Logic functions are determined by programming the Device by a user. A digital system is "integrated" on a PLD by the designer's own programming without requiring the chip manufacturer to design and fabricate application-specific integrated circuit chips. Furthermore, nowadays, instead of manually making an integrated circuit chip, such Programming is often implemented by "logic compiler" software, which is similar to a software compiler used in program development and writing, but the original code before compiling is written by a specific Programming Language, which is called Hardware Description Language (HDL), and HDL is not only one but many, such as abel (advanced Boolean Expression Language), ahdl (alternate Language Description Language), Confluence, pl (core unified Programming Language), HDCal, JHDL (Java Hardware Description Language), languai, Lola, HDL, las, hard Language (software Description Language), etc. The most commonly used are VHDL (Very-High-Speed Integrated Circuit Hardware Description Language) and Verilog 2. It will also be apparent to those skilled in the art that hardware circuitry that implements the logical method flows can be readily obtained by merely slightly programming the method flows into an integrated circuit using the hardware description languages described above.
For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, the functionality of the various modules may be implemented in the same one or more software and/or hardware implementations of the invention.
From the above description of the embodiments, it is clear to those skilled in the art that the present invention can be implemented by software plus necessary general hardware platform. Based on this understanding, the technical solutions of the present invention may be embodied in the form of software products, which essentially or partially contribute to the prior art. In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory. The computer software product may include instructions for causing a computing device (which may be a personal computer, a server, or a network device, etc.) to perform the methods of the various embodiments or portions of embodiments of the present invention. The computer software product may be stored in a memory, which may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium. Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include transitory computer readable media (transient media), such as modulated data signals and carrier waves.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system/electronic device embodiment, since the software functions executed by the processor are substantially similar to those of the method embodiment, the description is simple, and for the relevant points, reference may be made to part of the description of the method embodiment.
While the invention has been described in terms of embodiments, those skilled in the art will recognize that there are numerous variations and modifications of the invention without departing from the spirit of the invention, and it is intended that the appended claims cover such variations and modifications as fall within the true spirit of the invention.
It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is considered as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the applicant consider that such subject matter is not considered part of the disclosed subject matter.
Claims (19)
1. A method for determining the diameter of a coiled material comprises the steps that the coiled material is wound on a reel, the reel is driven to rotate by a motor through a speed reducer, the motor is provided with a pulse encoder, and a counting module counts pulses sent by the pulse encoder; characterized in that the method comprises:
acquiring a single-layer pulse number and a period pulse variation of a scroll, wherein the single-layer pulse number is the number of layers of coiled materials on the scroll, which are counted by a timing module, and the period pulse variation is the difference between the number of pulses counted by the counting module in the current return period and the number of pulses counted by the counting module in the previous return period;
determining the roll diameter variation of the coiled material on the reel in the current cycle according to a preset rule based on the single-layer pulse number and the periodic pulse variation, wherein the preset rule is associated with the thickness of the coiled material;
determining a coil diameter previous value of the coil material in a previous coil period according to the coil diameter variation and the coil diameter previous value of the coil material;
wherein the preset rules are as follows:
ΔD＝ΔP*2*D/A*B*C；
wherein, Δ D is the change of the coil diameter, Δ P is the change of the periodic pulse, D is the thickness of the coil, a × B × C is the single-layer pulse number, a is the pulse number corresponding to one rotation of the motor, B is the number of turns of the coil shaft required to rotate when the number of layers of the coil changes one layer, and C is the transmission ratio of the reducer.
2. The method of claim 1, wherein the number of single layer pulses is obtained according to the following equation:
PPR＝A*B*C；
wherein PPR is the number of pulses of a single layer, A is the number of pulses corresponding to one rotation of the motor, B is the number of turns of the winding shaft required to rotate when the number of layers of the coiled material changes by one layer, and C is the transmission ratio of the speed reducer.
3. The method of claim 2, wherein when the coil is a wire, the number of turns of the spool required to change the number of layers of the coil is determined based on the axial winding length of the spool and the radial dimension of the wire.
4. A method according to claim 2, wherein when the web is a sheet, the number of turns required of the reel for the number of layers of the web to change by one is 1.
5. The method of claim 1, wherein the number of pulses that the counting module can count has an upper limit value;
when the pulse number counted by the counting module is within the upper limit value range, the period pulse variation is obtained according to the following formula:
ΔP＝Uvalue of next generation－UFront value；
Wherein, Δ P is the variation of the periodic pulse, UValue of next generationFor the counting module to accumulate the counted number of pulses in the present cycle, UFront valueThe counted number of pulses is accumulated for the counting module in the previous cycle.
6. The method of claim 5, wherein when the number of pulses counted by the counting module is not within the upper limit value range, the variation of the periodic pulse is obtained according to the following formula:
ΔP＝Uvalue of next generation－UFront value+UUpper limit value；
Wherein, UUpper limit valueIs the upper limit value.
7. The method of claim 1, wherein the coil diameter recent value is obtained according to the following formula:
Dvalue of next generation＝DFront value+ΔD；
Wherein D isValue of next generationIs the coil diameter current value, DFront valueThe value of the winding diameter forward return is shown, and Δ D is the variation of the winding diameter.
8. A coil diameter determining device is characterized in that a coil is wound on a reel, the reel is driven to rotate by a motor through a speed reducer, the motor is provided with a pulse encoder, and a counting module counts pulses sent by the pulse encoder; characterized in that the device comprises:
the device comprises an acquisition module, a counting module and a control module, wherein the acquisition module is used for acquiring the single-layer pulse number and the periodic pulse variation of a scroll, the single-layer pulse number is the pulse number counted by a timing module when the number of the coiled materials on the scroll changes by one layer, and the periodic pulse variation is the difference between the pulse number counted by the counting module in the current return period and the pulse number counted by the counting module in the previous return period;
the coil diameter variation determining module is used for determining the coil diameter variation of the coiled material on the reel in the current cycle based on the single-layer pulse number and the periodic pulse variation according to a preset rule, and the preset rule is related to the thickness of the coiled material;
the coil diameter previous value determining module is used for determining a coil diameter previous value of the coil material in a previous cycle period according to the coil diameter variation and the coil diameter previous value of the coil material;
wherein the preset rules are as follows:
ΔD＝ΔP*2*D/A*B*C；
wherein, Δ D is the change of the coil diameter, Δ P is the change of the periodic pulse, D is the thickness of the coil, a × B × C is the single-layer pulse number, a is the pulse number corresponding to one rotation of the motor, B is the number of turns of the coil shaft required to rotate when the number of layers of the coil changes one layer, and C is the transmission ratio of the reducer.
9. An apparatus for determining a coil diameter, a coil wound on a reel, the reel being driven to rotate by a motor through a speed reducer, the motor being provided with a pulse encoder; wherein the apparatus comprises a processor and a memory for storing processor-executable instructions, said instructions when executed by said processor implementing steps comprising:
acquiring a single-layer pulse number and a period pulse variation of a scroll, wherein the single-layer pulse number is the number of layers of coiled materials on the scroll, which are counted by a timing module, and the period pulse variation is the difference between the number of pulses counted by the counting module in the current return period and the number of pulses counted by the counting module in the previous return period;
determining the roll diameter variation of the coiled material on the reel in the current cycle according to a preset rule based on the single-layer pulse number and the periodic pulse variation, wherein the preset rule is associated with the thickness of the coiled material;
determining a coil diameter previous value of the coil material in a previous coil period according to the coil diameter variation and the coil diameter previous value of the coil material;
wherein the preset rules are as follows:
ΔD＝ΔP*2*D/A*B*C；
wherein, Δ D is the change of the coil diameter, Δ P is the change of the periodic pulse, D is the thickness of the coil, a × B × C is the single-layer pulse number, a is the pulse number corresponding to one rotation of the motor, B is the number of turns of the coil shaft required to rotate when the number of layers of the coil changes one layer, and C is the transmission ratio of the reducer.
10. A system for determining the diameter of a coil, the coil being wound on a reel, the reel being driven in rotation by a motor via a speed reducer, the motor being provided with a pulse encoder; characterised in that the system comprises a processor and a memory for storing processor-executable instructions which, when executed by the processor, carry out the steps of the method of any one of claims 1 to 7.
11. A method for determining the diameter of a coil, the coil is wound on a reel, the reel is driven to rotate by a motor through a speed reducer, and the motor is provided with a frequency converter; characterized in that the method comprises:
determining the number of turns of the reel rotating in the current cycle according to the output frequency of the frequency converter;
determining the coil diameter variation of the coiled material on the reel in the current loop period according to a preset rule based on the number of turns of the reel rotating in the current loop period, wherein the preset rule is associated with the thickness of the coiled material;
determining a coil diameter previous value of the coil material in a previous coil period according to the coil diameter variation and the coil diameter previous value of the coil material;
wherein the preset rules are as follows:
ΔD＝2*D*E*F/(B*C*G)；
wherein, Δ D is the change of the coil diameter, D is the thickness of the coil, E x F/(B x C x G) is the number of turns of the reel rotating in the current cycle, E is the rotating speed of the motor, F is the current cycle, B is the number of turns of the reel required to rotate when the number of layers of the coil changes by one layer, C is the transmission ratio of the reducer, and G is the number of stages of the motor.
12. The method of claim 11, wherein the step of determining the number of revolutions of the spool in the previous cycle comprises:
determining the number of turns of the motor rotating in the current cycle based on the output frequency of the frequency converter and according to a unit transformation rule;
based on the number of revolutions of the motor in the present cycle, the number of revolutions of the spool in the present cycle is determined in accordance with the shaft change rule.
13. The method of claim 12, wherein the unit transformation rule is as follows:
carrying out first unit transformation on the output frequency of the frequency converter to obtain the rotating speed of the motor;
performing second unit transformation on the rotating speed of the motor to obtain the radian variation of the motor in the current cycle;
and performing third unit transformation on the radian variation of the motor in the current cycle to obtain the number of turns of the motor rotating in the current cycle.
14. The method of claim 13, wherein the second unit transformation is performed according to the following equation:
ΔR＝E*2π*F；
wherein, Δ R is the radian variation of the motor in the current cycle, E is the rotation speed of the motor, and F is the current cycle.
15. The method of claim 13, wherein the third unit transformation is performed according to the following equation:
ΔR/2π＝E*F；
wherein r isMotorThe number of turns of the motor in the current cycle is shown, Δ R is the radian change of the motor in the current cycle, E is the rotating speed of the motor, and F is the current cycle.
16. The method of claim 12, wherein the axis transformation rule is as follows:
rreel shaft＝rMotor/(C*G)＝E*F/(C*G)；
Wherein r isReel shaftFor the number of revolutions of the reel in the current cycle, rMotorThe number of turns of the motor in the current loop period, E the rotating speed of the motor, F the current loop period, and B the turns of the reel which need to be rotated when the number of layers of the coiled material changes by one layerAnd C is the transmission ratio of the speed reducer, and G is the stage number of the motor.
17. A device for determining the diameter of a coil, wherein the coil is wound on a reel, the reel is driven to rotate by a motor through a speed reducer, and the motor is provided with a frequency converter; characterized in that the device comprises:
the number of turns determining module is used for determining the number of turns of the reel rotating in the current cycle according to the output frequency of the frequency converter;
the coil diameter variation determining module is used for determining the coil diameter variation of the coiled material on the reel in the current loop period according to a preset rule based on the number of turns of the reel in the current loop period, and the preset rule is related to the thickness of the coiled material;
the coil diameter previous value determining module is used for determining a coil diameter previous value of the coil material in a previous cycle period according to the coil diameter variation and the coil diameter previous value of the coil material;
wherein the preset rules are as follows:
ΔD＝2*D*E*F/(B*C*G)；
wherein, Δ D is the change of the coil diameter, D is the thickness of the coil, E x F/(B x C x G) is the number of turns of the reel rotating in the current cycle, E is the rotating speed of the motor, F is the current cycle, B is the number of turns of the reel required to rotate when the number of layers of the coil changes by one layer, C is the transmission ratio of the reducer, and G is the number of stages of the motor.
18. An apparatus for determining a coil diameter, a coil material being wound on a reel, the reel being rotated by a motor through a speed reducer; wherein the apparatus comprises a processor and a memory for storing processor-executable instructions, said instructions when executed by said processor implementing steps comprising:
determining the number of turns of the reel rotating in the current cycle according to the output frequency of the frequency converter;
determining the coil diameter variation of the coiled material on the reel in the current loop period according to a preset rule based on the number of turns of the reel rotating in the current loop period, wherein the preset rule is associated with the thickness of the coiled material;
determining a coil diameter previous value of the coil material in a previous coil period according to the coil diameter variation and the coil diameter previous value of the coil material;
wherein the preset rules are as follows:
ΔD＝2*D*E*F/(B*C*G)；
wherein, Δ D is the change of the coil diameter, D is the thickness of the coil, E x F/(B x C x G) is the number of turns of the reel rotating in the current cycle, E is the rotating speed of the motor, F is the current cycle, B is the number of turns of the reel required to rotate when the number of layers of the coil changes by one layer, C is the transmission ratio of the reducer, and G is the number of stages of the motor.
19. A system for determining the diameter of a coil, the coil being wound on a reel, the reel being driven in rotation by a motor through a speed reducer; characterised in that the system comprises a processor and a memory for storing processor-executable instructions which, when executed by the processor, carry out the steps of the method of any one of claims 11 to 16.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042575A (en) * | 2006-03-22 | 2007-09-26 | 上海宝信软件股份有限公司 | Method for determining volume path with code device signal |
| CN102527770A (en) * | 2011-12-30 | 2012-07-04 | 中冶南方（武汉）自动化有限公司 | Method for correcting coiling diameter based on reference roller line speed |
| CN103708268A (en) * | 2013-12-26 | 2014-04-09 | 中铝西南铝冷连轧板带有限公司 | Method for calculating rolling diameter |
| CN103984870A (en) * | 2014-05-26 | 2014-08-13 | 中冶南方（武汉）自动化有限公司 | Advanced warp angle calculating method for strip shape roller of cold rolling mill |
| CN105197685A (en) * | 2015-09-29 | 2015-12-30 | 深圳市英威腾电气股份有限公司 | Tension control method, device and system of rolling and unrolling equipment |
-
2018
- 2018-10-26 CN CN201811257982.7A patent/CN111099449B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042575A (en) * | 2006-03-22 | 2007-09-26 | 上海宝信软件股份有限公司 | Method for determining volume path with code device signal |
| CN102527770A (en) * | 2011-12-30 | 2012-07-04 | 中冶南方（武汉）自动化有限公司 | Method for correcting coiling diameter based on reference roller line speed |
| CN103708268A (en) * | 2013-12-26 | 2014-04-09 | 中铝西南铝冷连轧板带有限公司 | Method for calculating rolling diameter |
| CN103984870A (en) * | 2014-05-26 | 2014-08-13 | 中冶南方（武汉）自动化有限公司 | Advanced warp angle calculating method for strip shape roller of cold rolling mill |
| CN105197685A (en) * | 2015-09-29 | 2015-12-30 | 深圳市英威腾电气股份有限公司 | Tension control method, device and system of rolling and unrolling equipment |
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