Paper tube outer layer polishing device control method and system

Abstract

The invention relates to the technical field of polishing device control, in particular to a paper tube outer layer polishing device control method and system.The method comprises the steps that the rotating speed, the propelling speed and the roughness of a paper tube are obtained; all the roughness is divided into a plurality of roughness groups, the hard particle degree of the position corresponding to the roughness is obtained according to the difference between the roughness in each roughness group and the corresponding time sequence distance, and the paper tube grinding adjustment coefficient is obtained according to the amplitude of the roughness in the roughness groups; and according to the paper tube polishing adjustment coefficient and the advancing speed of the current paper tube, the paper tube advancing speed of the next period is obtained. According to the method, the degree of the hard particles for evaluating the roughness is analyzed, so that the influence of the hard particles during evaluation of the paper tube polishing effect is avoided, and the polishing equipment can set related parameters according to the more accurate paper tube polishing effect, so that the paper tube polishing quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding device control, and particularly relates to a control method and system for an outer layer grinding device of a paper tube. Background Art

[0002] A paper tube is a cylindrical hollow tubular material made of multiple layers of paper or cardboard through processes such as winding and bonding. It can be used to wrap objects such as precision instruments and liquid crystal screens as a protective material. Therefore, to avoid the paper tube from wearing the wrapped objects, the paper tube needs to be ground. However, during the production process of the paper tube, hard particles such as stone powder and minerals are incorporated to enhance the structural strength of the paper tube and improve the forming stability of the paper tube. As a result, the roughness of the paper tube collected during grinding is affected by the hard particles in the paper tube, and the grinding effect of the paper tube cannot be accurately evaluated. This causes the outer layer grinding device of the paper tube to be unable to set relevant parameters according to the accurate grinding effect of the paper tube, resulting in a decline in the grinding quality of the paper tube. Summary of the Invention

[0003] The present invention provides a control method and system for an outer layer grinding device of a paper tube to solve the existing problem that hard particles in the paper tube interfere with the evaluation of the grinding effect of the paper tube, resulting in the outer layer grinding device of the paper tube being unable to set relevant parameters according to the accurate grinding effect of the paper tube, and thus the grinding quality of the paper tube decreases.

[0004] The control method and system for an outer layer grinding device of a paper tube of the present invention adopt the following technical solutions: An embodiment of the present invention provides a control method for an outer layer grinding device of a paper tube, and the method includes the following steps: Obtain the rotation speed, propulsion speed, and roughness of the paper tube in each cycle; According to the rotation speed of the paper tube in the cycle, divide all the roughnesses in the cycle into several roughness groups; according to the differences between different roughnesses in the same roughness group and the corresponding time sequence distances, obtain the hard particle factors at the corresponding positions of each roughness; according to the differences in amplitude of all the roughnesses and the hard particle factors at the corresponding positions, obtain the hard particle degrees at the corresponding positions of each roughness; According to the amplitude of the roughness in the roughness group and the hard particle degree at the corresponding position, obtain the roughness of the fiber part in the roughness group; according to the differences between all the roughnesses in the same roughness group and the roughness of the fiber part, combined with the hard particle degree at the corresponding position of the roughness, obtain the grinding uniformity at the corresponding position of the roughness group; according to the differences in grinding uniformity at the corresponding positions of different roughness groups and the roughness of the fiber part, obtain the paper tube grinding adjustment coefficient; According to the paper tube grinding adjustment coefficient and the roughness of the fiber part in the roughness group, obtain the propulsion speed of the paper tube in the next cycle.

[0005] Preferably, the method for obtaining the paper tube rotation speed, propulsion speed, and roughness in each cycle includes the following specific steps: Preset a cycle Sampling frequency ; Take every minutes as a cycle, obtain the paper tube rotation speed and propulsion speed within the same cycle, and set the sampling frequency of the laser scanner to kHz to collect the paper tube roughness within the same cycle.

[0006] Preferably, the method for dividing all the roughnesses in the cycle into several roughness groups according to the paper tube rotation speed in the cycle includes the following specific steps: Divide all the roughnesses in the same cycle into several roughness groups with a duration of , where the , is the paper tube rotation speed in the cycle.

[0007] Preferably, the method for obtaining the hard particle factor at the corresponding position of each roughness according to the difference between different roughnesses in the same roughness group and the corresponding time sequence distance includes the following specific calculation formula: In the formula, represents the hard particle factor at the corresponding position of the th roughness in the th roughness group; represents the number of roughnesses in the th roughness group; represents the distance in the acquisition time between the th roughness and the th roughness in the th roughness group; represents the distance in the acquisition time between the th roughness and the th roughness in the th roughness group; represents the amplitude of the th roughness in the th roughness group; represents the amplitude of the th roughness in the th roughness group; represents the absolute value function; represents the exponential function with the natural constant as the base.

[0008] Preferably, the method for obtaining the hard particle degree at the corresponding position of each roughness according to the difference in amplitude of all roughnesses and the hard particle factor at the corresponding position includes the following specific calculation formula: In the formula, represents the degree of hard particles at the position corresponding to the -th roughness in the -th roughness group; represents the number of roughness groups; represents the number of roughnesses in the -th roughness group; represents the hard particle factor at the position corresponding to the -th roughness in the -th roughness group; represents the hard particle factor at the position corresponding to the -th roughness in the -th roughness group; represents the amplitude of the -th roughness in the -th roughness group; represents the amplitude of the -th roughness in the -th roughness group; represents the absolute value function; represents a preset hyperparameter.

[0009] Preferably, obtaining the roughness of the fiber part in the roughness group according to the amplitude of the roughness and the degree of hard particles at the corresponding position in the roughness group includes the following specific calculation formula: In the formula, represents the roughness of the fiber part in the -th roughness group; represents the number of roughnesses in the -th roughness group; represents the degree of hard particles at the position corresponding to the -th roughness in the -th roughness group; represents the degree of hard particles at the position corresponding to the -th roughness in the -th roughness group; represents the amplitude of the -th roughness in the -th roughness group; represents the exponential function with the natural constant as the base.

[0010] Preferably, obtaining the grinding uniformity at the corresponding position of the roughness group according to the difference between all roughnesses and the roughness of the fiber part in the same roughness group, combined with the degree of hard particles at the corresponding position of the roughness, includes the following specific calculation formula: In the formula, represents the grinding uniformity at the corresponding position of the th roughness group; represents the linear normalization function.

[0011] Preferably, obtaining the paper tube grinding adjustment coefficient according to the difference in the grinding uniformity at the corresponding positions of different roughness groups and the roughness of the fiber part, the specific calculation formula included is: In the formula, represents the paper tube grinding adjustment coefficient; represents the change in the grinding uniformity at the corresponding position of the th roughness group; represents the change in the grinding uniformity at the corresponding position of the th roughness group; represents the grinding uniformity at the corresponding position of the th roughness group; represents the grinding uniformity at the corresponding position of the th roughness group; represents the number of roughness groups; represents the roughness of the fiber part in the th roughness group; represents the sigmoid function.

[0012] Preferably, obtaining the paper tube advancement speed for the next cycle according to the paper tube grinding adjustment coefficient and the roughness of the fiber part in the roughness group, the specific method included is: Input the roughness of the fiber part in all roughness groups into the PID control module to obtain the primary paper tube advancement speed, and multiply the difference between 1 and the paper tube grinding adjustment coefficient by the primary paper tube advancement speed to obtain the paper tube advancement speed.

[0013] Another embodiment of the present invention provides a control system for a paper tube outer layer grinding device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of any one of the above-mentioned control methods for a paper tube outer layer grinding device are implemented.

[0014] The beneficial effects of the technical solution of the present invention are as follows: In this application, the rotational speed, propulsion speed, and roughness of the paper tube in each cycle are obtained; all the roughness values in the cycle are divided into several roughness groups, and the hard particle factor corresponding to the position of the roughness is obtained. The collected roughness is not entirely the roughness of the fiber part in the paper tube. To accurately evaluate the grinding effect of the paper tube, it is necessary to obtain the roughness of the fiber part. Since the fibers in the paper tube are distributed similarly in a local range, the hard particle factor corresponding to the position of the roughness can be obtained based on the difference in amplitude and the distance in time series of different roughness values. Also, since the roughness values corresponding to all the hard particles in the paper tube are similar, the difference in amplitude of the roughness values corresponding to large hard particle factors is small. Therefore, the degree of hard particles at the position corresponding to the roughness can be obtained through the amplitude of each roughness value and the hard particle factor at the corresponding position. After obtaining the degree of hard particles at the position corresponding to the roughness, based on this, a calculation weight is assigned to each roughness value for calculating the roughness of the fiber part to obtain the roughness of the fiber part. Further, when the change in the roughness of the fiber part is more unstable, it indicates that the grinding effect of the paper tube is worse. Thus, a paper tube grinding adjustment coefficient is obtained, and relevant parameters for grinding the paper tube are set through the paper tube grinding adjustment coefficient. In this application, by analyzing and evaluating the degree of hard particles of the roughness, the influence of hard particles is avoided when evaluating the grinding effect of the paper tube, enabling the grinding equipment to set relevant parameters based on a more accurate grinding effect of the paper tube. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a flowchart of the steps of a control method for an outer layer grinding device of a paper tube according to the present invention. Detailed Embodiments

[0017] To further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following, in combination with the drawings and preferred embodiments, details the specific embodiments, structures, features, and effects of a control method and system for an outer layer grinding device of a paper tube according to the present invention. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs.

[0019] The following specifically describes the specific solutions of a control method and system for a paper tube outer layer grinding device provided by the present invention in conjunction with the accompanying drawings.

[0020] Please refer to Figure 1 , which shows a flowchart of the steps of a control method for a paper tube outer layer grinding device provided by an embodiment of the present invention. The method includes the following steps: Step S001: Obtain the rotational speed, propulsion speed, and roughness of the paper tube in each cycle.

[0021] It should be noted that a paper tube is a tubular object processed from paper and can be used to wrap precision instruments, LCD screens, and other objects as their protective materials. To avoid the paper tube from wearing the wrapped objects, the surface of the paper tube needs to be smooth. Therefore, it is necessary to use a paper tube outer layer grinding device to grind the outer layer of the paper tube. Therefore, this embodiment proposes a control method for a paper tube outer layer grinding device. By detecting and analyzing the roughness during the paper tube grinding process, the paper tube outer layer grinding device is regulated to ensure that the outer layer of the ground paper tube is smooth. Therefore, it is first necessary to collect the roughness of the paper tube during the grinding process.

[0022] It should be further noted that the paper tube outer layer grinding device includes but is not limited to the following modules: 1. Paper tube clamping module: Used to clamp and fix the paper tube.

[0023] 2. Motor module: Used to drive the clamping module to rotate, causing the paper tube fixed by the clamping module to rotate.

[0024] 3. Push rod module: Used to push the motor module, causing the paper tube to move horizontally to completely grind the paper tube.

[0025] 4. Grinding head: The grinding head is used to grind the rotating paper tube.

[0026] 5. Roughness detection module: The roughness detection module is a laser scanner installed behind the grinding head and is used to detect the roughness of the outer layer of the paper tube during the grinding process.

[0027] 6. Rotational speed detection module: The rotational speed detection module is a rotational speed sensor installed at the motor module and is used to detect the rotational speed of the paper tube during the grinding process.

[0028] 7. Clock module: The clock module is used to synchronize the time of each module to ensure the accuracy and synchronization of data collection and control instructions. It can provide accurate time stamps for data and record events.

[0029] 8. Data Comprehensive Processing Module: The data comprehensive processing module is the core module of the outer layer grinding device for paper tubes and is equipped with a control computer. It is responsible for receiving, processing, and analyzing data from each module to obtain the grinding adjustment coefficient for the paper tubes.

[0030] 9. PID Regulation Module: The PID regulation module is the core module of the outer layer grinding device for paper tubes and is used to adjust the advancing speed of the grinding paper tubes according to the grinding adjustment coefficient of the paper tubes and the roughness.

[0031] Specifically, a period is preset. Sampling frequency , the and The specific values can be set according to the actual situation and are not strictly required in this embodiment. In this embodiment, , are taken as examples for description; let the PID regulation module take every minutes as a period, obtain the paper tube rotation speed and advancing speed within the same period, and set the sampling frequency of the laser scanner to kHz to collect the roughness of the paper tubes within the same period.

[0032] It should be further noted that the specific regulation method of the outer layer grinding device for paper tubes in this embodiment is to adjust the paper tube advancing speed of the outer layer grinding device for paper tubes through all the roughnesses collected during a period of time at intervals.

[0033] Step S002: Divide all the roughnesses in the period into several roughness groups according to the paper tube rotation speed in the period; obtain the hard particle factors at the corresponding positions of each roughness according to the differences between different roughnesses in the same roughness group and the corresponding time sequence distances; obtain the hard particle degrees at the corresponding positions of each roughness according to the differences in amplitude of all the roughnesses and the hard particle factors at the corresponding positions.

[0034] It should be noted that since hard particles such as stone powder and minerals are incorporated during the production of paper tubes to enhance the structural strength of the paper tubes and improve the forming stability of the paper tubes; therefore, the roughness obtained by the roughness detection module is not entirely the roughness of the fiber part in the paper tubes, that is, the hard particles existing in the paper tubes will interfere with the evaluation of the roughness of the paper tube surface. Therefore, to avoid the interference caused by the hard particles in the paper tubes, it is necessary to obtain the hard particle degrees at the corresponding positions of the roughness.

[0035] It should be further noted that since the distribution of fibers in the paper tube is similar within a local range, when the distance between a certain roughness and other roughnesses at corresponding positions is closer and the amplitude difference is larger, the corresponding position of this roughness is more likely to be a hard particle. Therefore, the hard particle factor at the corresponding position of the roughness can be obtained based on this. Thus, the larger the hard particle factor at the corresponding position of the roughness, the more likely the corresponding position of this roughness is a hard particle. And the hardness of the hard particles in the paper tube is high, so the roughness of the hard particles will not change significantly due to grinding. Therefore, the roughnesses corresponding to all hard particles in the paper tube are similar. Further combining the hard particle factor at the corresponding position of the roughness, the degree of hard particles at the corresponding position of the roughness can be obtained.

[0036] Preferably, in a specific embodiment of the present invention, all roughnesses in the same period are divided into several roughness groups with a duration of , and the , is the rotational speed of the paper tube in the period (if the duration corresponding to the last roughness group in the period is less than t, then all the remaining roughness groups are grouped into the last roughness group).

[0037] Furthermore, for the th roughness in the th roughness group, according to the difference between the th roughness in the th roughness group and each roughness in the th roughness group, and combining the time sequence distance between the th roughness in the th roughness group and each roughness in the th roughness group, the hard particle factor at the corresponding position of the th roughness in the th roughness group is obtained. The specific calculation formula is: In the formula, represents the hard particle factor at the corresponding position of the th roughness in the th roughness group; represents the number of roughnesses in the th roughness group; represents the distance in the acquisition time between the th roughness and the th roughness in the th roughness group; represents the distance in the acquisition time between the th roughness and the th roughness in the th roughness group; Indicates the The roughness group The magnitude of the roughness; Indicates the The roughness group The magnitude of the roughness; represents the absolute value function; Represents an exponential function with a natural constant as the base. In this embodiment, Model to present inverse proportional relationship and normalization processing, As the input of the model, the implementer can set the inverse proportional function and normalization function according to the actual situation.

[0038] It should be noted that the hard particle factor at the corresponding position of the roughness indicates the possibility that the corresponding position of the roughness is a hard particle. The closer the distance between the roughness and other roughness at the corresponding position and the greater the difference in amplitude, the more likely the corresponding position of the roughness is to be a hard particle. The larger the value is, the closer the distance between the two corresponding positions of roughness is. The larger the value of , the greater the difference in the amplitude of the two roughnesses. The larger the value is, the more likely the roughness corresponding position is to be a hard particle.

[0039] It should be further explained that since the roughness corresponding to all hard particles in the paper tube is similar, the difference in amplitude of the roughness corresponding to the large hard particle factor is small. Therefore, the degree of hard particles at the corresponding position of the roughness can be obtained through the amplitude of each roughness and the hard particle factor at the corresponding position.

[0040] Preferably, in a specific embodiment of the present invention, for The roughness group Roughness, according to The roughness group The difference in amplitude between the first roughness and all roughness, combined with the hard particle factors at the corresponding positions of all roughness, is used to obtain the The roughness group The specific calculation formula for the degree of hard particles at the corresponding position of each roughness is: Where, Indicates the The roughness group The degree of hard particles at each roughness position; Indicates the number of roughness groups; Indicates the The number of roughness levels in a roughness group; Indicates the The hard particle factor at the corresponding position of the th roughness in a roughness group; Denote the hard particle factor at the corresponding position of the th roughness in the th roughness group; Denote the amplitude of the th roughness in the th roughness group; Denote the amplitude of the th roughness in the Denote the absolute value function; Denote a preset hyperparameter, the purpose of which is to avoid the situation where the denominator is 0 during the fractional operation; The specific value of

[0041] It should be noted that The larger the value of

[0042] is, the greater the hard particle factors at the corresponding positions of the two roughnesses and the more similar the two roughnesses. Also, since the roughnesses corresponding to the hard particles are similar, for any roughness, when the hard particle factor at the corresponding position of the roughness is large and the difference in amplitude between the roughness and the roughnesses with large hard particle factors at other positions is small, the corresponding position of the roughness has more hard particle characteristics, that is, the degree of hard particles at the corresponding position of the roughness is greater.

[0043] Thus, the degree of hard particles at the corresponding positions of all roughnesses is obtained.

[0044] It should be noted that the fiber layer of the paper tube directly determines the smoothness of the paper tube surface, and the polishing effect of the outer layer of the paper tube is mainly reflected in the fiber part; therefore, after obtaining the degree of hard particles corresponding to all roughness positions through step S002, the weights can be set based on the degree of hard particles corresponding to the roughness positions, and the overall roughness of the fiber part in each roughness group can be obtained, and based on this, the polishing uniformity at the corresponding positions of each roughness group in the paper tube can be obtained; and the more unstable the change in the roughness of the fiber part, the worse the polishing effect of the paper tube, and thus the paper tube polishing adjustment coefficient can be obtained.

[0045] Preferably, in a specific embodiment of the present invention, for the th roughness group, according to all the roughnesses and the degree of hard particles corresponding to the roughness positions in the th roughness group, the polishing uniformity at the corresponding positions of the th roughness group is obtained, and its specific calculation formula is: In the formula, represents the roughness of the fiber part in the th roughness group; represents the number of roughnesses in the th roughness group; represents the degree of hard particles corresponding to the th roughness position in the th roughness group; represents the degree of hard particles corresponding to the th roughness position in the th roughness group; represents the amplitude of the th roughness in the th roughness group; represents the polishing uniformity at the corresponding positions of the th roughness group; represents the linear normalization function, and its normalization range is that of all roughness groups ; represents the exponential function with the natural constant as the base. In this embodiment, the model is used to present the inverse proportional relationship and normalization processing, is the input of the model, and the implementer can set the inverse proportional function and normalization function according to the actual situation.

[0046] It should be noted that when the roughness in the roughness group includes the roughness of some hard particles, resulting in the inability to directly obtain the roughness of the fiber part in the roughness group, therefore, when calculating the roughness of the fiber part in the roughness group, a negatively correlated calculation weight needs to be assigned according to the degree of hard particles in the roughness, that is, the rougher the roughness in the roughness group is with the characteristics of hard particles, the less this roughness participates in the calculation of the roughness of the fiber part in the roughness group, so as to avoid the interference of hard particles; thus, the roughness of the fiber part in the roughness group is obtained.

[0047] It should be further noted that the grinding uniformity at the corresponding position of the roughness group represents the grinding uniformity of the fiber part in the roughness group. After obtaining the roughness of the fiber part in the roughness group, the difference between all the roughnesses in the roughness group and the roughness of the fiber part can be combined, and a negatively correlated calculation weight is assigned according to the degree of hard particles in the roughness. When the degree of hard particles in the roughness in the roughness group is smaller and the difference from the roughness of the fiber part is smaller, the fiber part in the roughness group is ground more uniformly. And when the change in the grinding uniformity at the corresponding position of the roughness group is more unstable and the fiber part is rougher, it indicates that the grinding effect of the paper tube is worse. The worse the grinding effect of the paper tube is, the more the outer layer grinding device of the paper tube should be adjusted. Therefore, the paper tube grinding adjustment coefficient can be obtained therefrom.

[0048] Preferably, in a specific embodiment of the present invention, according to the grinding uniformity at the corresponding positions of all roughness groups, combined with the roughness of the fiber parts in all roughness groups, the paper tube grinding adjustment coefficient is obtained, and its specific calculation formula is: In the formula, represents the paper tube grinding adjustment coefficient; represents the change in the grinding uniformity at the corresponding position of the th roughness group; represents the change in the grinding uniformity at the corresponding position of the th roughness group; represents the grinding uniformity at the corresponding position of the th roughness group; represents the grinding uniformity at the corresponding position of the th roughness group; represents the number of roughness groups; represents the th roughness of the fiber part in the roughness group; represents the sigmoid function, which is used for normalization operation in this embodiment.

[0049] It should be noted that taking represents the change in the grinding uniformity at the corresponding position of the roughness group, The larger the value is, the more unstable the change in the polishing uniformity at the corresponding position of the roughness group is. And while the change in the polishing uniformity at the corresponding position of the roughness group is more unstable, the rougher the fiber part of the roughness group is, which indicates that the polishing effect of the paper tube is worse and the outer layer polishing device of the paper tube should be adjusted more.

[0050] Thus, the paper tube polishing adjustment coefficient is obtained.

[0051] Step S004: Obtain the paper tube propulsion speed for the next cycle according to the paper tube polishing adjustment coefficient and the roughness of the fiber part in the roughness group.

[0052] It should be noted that after obtaining the roughness of the fiber part in the roughness group and the paper tube polishing adjustment coefficient through step S003, the roughness of the fiber part in all roughness groups in a complete cycle can be input into the PID control module to obtain the primary relevant parameters for polishing the paper tube. Since the larger the polishing adjustment coefficient is, the worse the polishing effect of the paper tube is, it is necessary to slow down the paper tube propulsion speed to improve the polishing quality of the paper tube.

[0053] Specifically, input the roughness of the fiber part in all roughness groups into the PID control module to obtain the primary paper tube propulsion speed. Since obtaining the primary paper tube propulsion speed through the roughness and the PID control module is a well-known prior art, it will not be elaborated in this embodiment; multiply the difference between 1 and the paper tube polishing adjustment coefficient by the primary paper tube propulsion speed to obtain the paper tube propulsion speed. The specific calculation formula is: In the formula, represents the paper tube propulsion speed; represents the paper tube polishing adjustment coefficient; represents the primary paper tube propulsion speed.

[0054] It should be noted that in this embodiment, by analyzing and evaluating the degree of hard particles of the roughness, the influence of hard particles is avoided when evaluating the polishing effect of the paper tube, so that the polishing equipment can set relevant parameters according to the more accurate polishing effect of the paper tube, thereby improving the polishing quality of the paper tube.

[0055] Another embodiment of the present invention provides a control system for an outer layer polishing device of a paper tube, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements a control method for an outer layer polishing device of a paper tube in steps S001 to S004.

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A control method for a polishing device for the outer layer of a paper tube, characterized in that, The method includes the following steps: Obtain the rotational speed, propulsion speed, and roughness of the paper tube in each cycle; According to the rotational speed of the paper tube in the cycle, divide all the roughnesses in the cycle into several roughness groups; according to the differences between different roughnesses in the same roughness group and the corresponding time sequence distances, obtain the hard particle factors at the corresponding positions of each roughness; according to the differences in amplitude among all roughnesses and the hard particle factors at the corresponding positions, obtain the hard particle degrees at the corresponding positions of each roughness; According to the amplitude of the roughness in the roughness group and the hard particle degree at the corresponding position, obtain the roughness of the fiber part in the roughness group; according to the differences between all roughnesses in the same roughness group and the roughness of the fiber part, and in combination with the hard particle degree at the corresponding position of the roughness, obtain the grinding uniformity at the corresponding position of the roughness group; according to the differences in grinding uniformity at the corresponding positions of different roughness groups and the roughness of the fiber part, obtain the paper tube grinding adjustment coefficient; According to the paper tube grinding adjustment coefficient and the roughness of the fiber part in the roughness group, obtain the paper tube propulsion speed in the next cycle.

2. The control method of a paper tube outer layer polishing device according to claim 1, wherein The specific method included in the step of obtaining the rotational speed, propulsion speed, and roughness of the paper tube in each cycle is as follows: Preset a period Sampling frequency ; Every minute is used as a period to obtain the paper tube rotation speed and propulsion speed within the same period, and set the sampling frequency of the laser scanner to kHz to collect the paper tube roughness within the same period.

3. The control method of a paper tube outer layer polishing device according to claim 1, characterized in that, The specific method included in the step of dividing all the roughnesses in the cycle into several roughness groups according to the rotational speed of the paper tube in the cycle is as follows: Divide all the roughness values in the same period into several roughness groups with a duration of , where the , is the rotational speed of the paper tube in the period.

4. The control method of a polishing device for the outer layer of a paper tube according to claim 1, wherein, The specific calculation formula included in the step of obtaining the hard particle factors at the corresponding positions of each roughness according to the differences between different roughnesses in the same roughness group and the corresponding time sequence distances is as follows: In the formula, represents the hard particle factor at the position corresponding to the -th roughness in the -th roughness group; represents the number of roughnesses in the -th roughness group; represents the distance in the acquisition time between the -th roughness and the -th roughness in the -th roughness group; represents the distance in the acquisition time between the -th roughness and the -th roughness in the -th roughness group; represents the amplitude of the -th roughness in the -th roughness group; represents the amplitude of the -th roughness in the -th roughness group; represents the absolute value function; represents the exponential function with the natural constant as the base.

5. The control method of a paper tube outer layer grinding device according to claim 1, characterized in that, The specific calculation formula included in the step of obtaining the hard particle degrees at the corresponding positions of each roughness according to the differences in amplitude among all roughnesses and the hard particle factors at the corresponding positions is as follows: In the formula, represents the degree of hard particles at the position corresponding to the -th roughness in the -th roughness group; represents the number of roughness groups; represents the number of roughnesses in the -th roughness group; represents the hard particle factor at the position corresponding to the -th roughness in the -th roughness group; represents the hard particle factor at the position corresponding to the -th roughness in the -th roughness group; represents the amplitude of the -th roughness in the -th roughness group; represents the amplitude of the -th roughness in the -th roughness group; represents the absolute value function; represents a preset hyperparameter.

6. The control method of a paper tube outer layer grinding device according to claim 1, characterized in that The specific calculation formula included in the step of obtaining the roughness of the fiber part in the roughness group according to the amplitude of the roughness in the roughness group and the hard particle degree at the corresponding position is as follows: In the formula, represents the roughness of the fiber part in the th roughness group; represents the number of roughnesses in the th roughness group; represents the degree of hard particles at the position corresponding to the th roughness in the th roughness group; represents the degree of hard particles at the position corresponding to the th roughness in the th roughness group; represents the amplitude of the th roughness in the th roughness group; represents the exponential function with the natural constant as the base.

7. The control method of a paper tube outer layer grinding device according to claim 6, characterized in that The specific calculation formula included in the step of obtaining the grinding uniformity at the corresponding position of the roughness group according to the differences between all roughnesses in the same roughness group and the roughness of the fiber part, and in combination with the hard particle degree at the corresponding position of the roughness is as follows: wherein, represents the grinding uniformity at the corresponding position of the th roughness group; represents a linear normalization function.

8. The control method of a paper tube outer layer polishing device according to claim 1, characterized in that The specific calculation formula included in the step of obtaining the paper tube grinding adjustment coefficient according to the differences in grinding uniformity at the corresponding positions of different roughness groups and the roughness of the fiber part is as follows: In the formula, represents the grinding adjustment coefficient of the paper tube; represents the change in the grinding uniformity at the position corresponding to the th roughness group; represents the change in the grinding uniformity at the position corresponding to the th roughness group; represents the grinding uniformity at the position corresponding to the th roughness group; represents the grinding uniformity at the position corresponding to the th roughness group; represents the number of roughness groups; represents the roughness of the fiber part in the th roughness group; represents the sigmoid function.

9. The control method of a paper tube outer layer grinding device according to claim 1, characterized in that The specific method included in the step of obtaining the paper tube propulsion speed in the next cycle according to the paper tube grinding adjustment coefficient and the roughness of the fiber part in the roughness group is as follows: Input the roughnesses of the fiber parts in all roughness groups into the PID control module to obtain the primary paper tube propulsion speed, and multiply the difference between 1 and the paper tube grinding adjustment coefficient by the primary paper tube propulsion speed to obtain the paper tube propulsion speed.

10. A control system for a paper tube outer layer grinding device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the computer program is executed by a processor, it implements the steps of a control method for an outer layer grinding device of a paper tube as described in any one of claims 1-9.

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