Method and apparatus for correcting deviation

Abstract

The embodiment of the specification provides a deviation correction method and device, wherein the deviation correction method comprises: in the case of determining that a first roll material is switched to a second roll material, performing light source calibration adaptation on the second roll material based on a plurality of calibration light sources corresponding to a deviation correction sensor; determining a target light source corresponding to the second roll material based on a light source calibration adaptation result, wherein the target light source is one of the plurality of calibration light sources; performing deviation correction detection on the second roll material based on the target light source and the deviation correction sensor; and after determining that the second roll material has a position deviation, controlling a driver to perform centering deviation correction. The automatic switching of the target light source for the roll material is realized, and the accurate deviation correction detection on the roll material based on the switched target light source is realized.

Description

Correction methods and devices Technical Field

[0001] The embodiments in this specification relate to the field of lithium battery manufacturing technology, and in particular to methods for correcting deviations. Background Technology

[0002] Currently, during the manufacturing process of lithium battery materials, when switching between roll materials, different types of materials, such as reflective materials, light-absorbing materials, laser materials, etc., or different batches of the same material, have different surface reflective properties. Therefore, it is necessary to adjust the angle of the light source and sensor to obtain accurate edge signals for subsequent roll material correction processing.

[0003] In existing technologies, the parameters and positions of the corresponding lighting system and sensors are often manually adjusted, which takes a long time and results in a waste of time and manpower.

[0004] Therefore, there is an urgent need for an automated method for switching light sources to save labor costs and accelerate the efficiency of subsequent material correction. Summary of the Invention

[0005] In view of this, embodiments of this specification provide a correction method. One or more embodiments of this specification also relate to a correction device, a computing device, a computer-readable storage medium, and a computer program, to address the technical deficiencies existing in the prior art.

[0006] According to a first aspect of the embodiments of this specification, a method for correcting deviations is provided, comprising:

[0007] When it is determined that the first roll material is switched to the second roll material, the second roll material is calibrated and adapted based on multiple calibration light sources corresponding to the correction sensor.

[0008] The target light source corresponding to the second roll material is determined based on the light source calibration and adaptation results, wherein the target light source is one of the plurality of calibration light sources;

[0009] The second roll material is subjected to correction detection based on the target light source and the correction sensor;

[0010] After determining that the second roll has shifted position, the control driver performs centering and correction.

[0011] In one possible implementation, the step of performing light source calibration and adaptation on the second roll material based on multiple calibration light sources corresponding to the correction sensor includes:

[0012] The target calibration light source is determined from a plurality of calibration light sources based on the correction sensor, wherein the target calibration light source is one of the plurality of calibration light sources;

[0013] The second roll material is illuminated based on the target calibration light source to obtain the color value of the roll material light source;

[0014] The target area is illuminated by the target calibration light source to obtain the target light source color value, wherein the target area is the area outside the second roll material within the detection range of the correction sensor;

[0015] The difference value is obtained based on the color value of the roll material light source and the color value of the target light source.

[0016] In one possible implementation, determining the target light source corresponding to the second roll material based on the light source calibration and adaptation results includes:

[0017] The target difference value is determined by sorting based on at least two difference values.

[0018] The target light source corresponding to the second roll material is determined based on the target difference value.

[0019] In one possible implementation, the step of performing web correction detection on the second roll material based on the target light source and the web correction sensor includes:

[0020] Determine the detection range of the correction sensor;

[0021] The proportion of the second roll material within the detection range is determined based on the detection range and the target light source.

[0022] Based on the percentage information, it is determined whether the second roll has experienced a positional shift.

[0023] In one possible implementation, determining the proportion of the second roll material within the detection range based on the detection range and the target light source includes:

[0024] The current range information of the second roll material is determined based on the target light source;

[0025] Based on the ratio of the current range information to the detection range, the proportion of the second roll material within the detection range is determined.

[0026] In one possible implementation, determining that the second roll has shifted position includes:

[0027] Calculate the difference between the stated percentage information and the preset percentage information;

[0028] The difference is compared with a preset difference threshold to generate a comparison result;

[0029] If the difference is determined to be different from the preset difference threshold based on the comparison result, it is determined that the second roll material has experienced a positional shift.

[0030] In one possible implementation, controlling the driver to perform alignment correction includes:

[0031] Obtain the current position information of the second roll;

[0032] The driver is controlled to perform centering and correction based on the current position information and the motor vector control algorithm.

[0033] According to a second aspect of the embodiments of this specification, a correction device is provided, comprising:

[0034] The adaptation module is configured to perform light source calibration adaptation on the second roll material based on multiple calibration light sources corresponding to the correction sensor when the controller determines that the first roll material has been switched to the second roll material.

[0035] The determination module is configured to determine the target light source corresponding to the second roll material based on the light source calibration and adaptation results, wherein the target light source is one of the plurality of calibration light sources;

[0036] The detection module is configured to perform correction detection on the second roll material based on the target light source and the correction sensor;

[0037] The control module is configured to control the driver to perform centering and correction after determining that the second roll has shifted position.

[0038] In one possible implementation, the adapter module is further configured as follows:

[0039] The target calibration light source is determined from a plurality of calibration light sources based on the correction sensor, wherein the target calibration light source is one of the plurality of calibration light sources;

[0040] The second roll material is illuminated based on the target calibration light source to obtain the color value of the roll material light source;

[0041] The target area is illuminated by the target calibration light source to obtain the target light source color value, wherein the target area is the area outside the second roll material within the detection range of the correction sensor;

[0042] The difference value is obtained based on the color value of the roll material light source and the color value of the target light source.

[0043] In one possible implementation, the determining module is further configured as follows:

[0044] The target difference value is determined by sorting based on at least two difference values.

[0045] The target light source corresponding to the second roll material is determined based on the target difference value.

[0046] In one possible implementation, the determining module is further configured as follows:

[0047] Determine the detection range of the correction sensor;

[0048] The proportion of the second roll material within the detection range is determined based on the detection range and the target light source.

[0049] Based on the percentage information, it is determined whether the second roll has experienced a positional shift.

[0050] In one possible implementation, the determining module is further configured as follows:

[0051] The current range information of the second roll material is determined based on the target light source;

[0052] Based on the ratio of the current range information to the detection range, the proportion of the second roll material within the detection range is determined.

[0053] In one possible implementation, the detection module is further configured as follows:

[0054] Calculate the difference between the stated percentage information and the preset percentage information;

[0055] The difference is compared with a preset difference threshold to generate a comparison result;

[0056] If the difference is determined to be different from the preset difference threshold based on the comparison result, it is determined that the second roll material has experienced a positional shift.

[0057] In one possible implementation, the control module is further configured as follows:

[0058] Obtain the current position information of the second roll;

[0059] The driver is controlled to perform centering and correction based on the current position information and the motor vector control algorithm.

[0060] According to a third aspect of the embodiments of this specification, a computing device is provided, comprising:

[0061] Memory and processor;

[0062] The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions, which, when executed by the processor, implement the steps of the above-described correction method.

[0063] According to a fourth aspect of the embodiments of this specification, a computer-readable storage medium is provided that stores computer-executable instructions that, when executed by a processor, implement the steps of the above-described correction method.

[0064] According to a fifth aspect of the embodiments of this specification, a computer program is provided, wherein when the computer program is executed in a computer, it causes the computer to perform the steps of the above-described correction method.

[0065] This specification provides a web-correction method in one embodiment, which involves, upon determining that a first web material is being switched to a second web material, performing light source calibration and adaptation on the second web material based on multiple calibration light sources corresponding to a web-correction sensor; determining a target light source corresponding to the second web material based on the light source calibration and adaptation results, wherein the target light source is one of the multiple calibration light sources; performing web-correction detection on the second web material based on the target light source and the web-correction sensor; and, after determining that the second web material has experienced a positional shift, controlling a driver to perform centering and web-correction. This achieves automated switching of the target light source for the web material and precise web-correction detection based on the switched target light source. Attached Figure Description

[0066] Figure 1 is a flowchart of a correction method provided in one embodiment of this specification;

[0067] Figure 2 is a schematic diagram of a correction device provided in one embodiment of this specification;

[0068] Figure 3 is a structural block diagram of a computing device provided in one embodiment of this specification. Detailed Implementation

[0069] Many specific details are set forth in the following description to provide a full understanding of this specification. However, this specification can be implemented in many other ways than those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this specification. Therefore, this specification is not limited to the specific implementations disclosed below.

[0070] The terminology used in one or more embodiments of this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the one or more embodiments of this specification. The singular forms “a” and “the” as used in one or more embodiments of this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in one or more embodiments of this specification refers to and includes any or all possible combinations of one or more associated listed items.

[0071] It should be understood that although the terms first, second, etc., may be used to describe various information in one or more embodiments of this specification, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first may also be referred to as second without departing from the scope of one or more embodiments of this specification, and similarly, second may also be referred to as first. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."

[0072] In the lithium battery manufacturing process, when switching between roll materials, different types of materials, such as reflective, light-absorbing, and laser-like materials, or different batches of the same material, have different surface reflective properties. Therefore, it is necessary to adjust the angles of the light source and sensors to obtain accurate edge signals for subsequent roll material correction. To address this, an adaptive high-precision edge detection system was designed, comprising an intelligent sensor module based on a high-precision micron-level CCD (charge-coupled device) and a multi-angle adaptive combined lighting module. Under complex lighting conditions such as excessively bright, uneven, or interfering ambient light, this detection system eliminates the need for manual adjustment of the lighting system and sensor parameters and positions when changing roll materials on the production line. It adaptively adjusts the combination of light sources within the lighting module to obtain the optimal illumination angle and brightness. Simultaneously, the sensors automatically adjust their parameters, ultimately enabling continuous tracking and acquisition of high-precision micron-level signals to complete the edge detection of the lithium battery roll material for roll material correction.

[0073] Web alignment technology refers to the automatic alignment of web rolls by detecting the edge or center position of the web roll using sensors, analyzing and processing the signals through a controller, and adjusting the running direction of the web roll through an actuator. With technological advancements and market demands, web alignment technology is constantly being innovated and optimized to adapt to different types and specifications of web rolls, improve alignment accuracy and sensitivity, reduce alignment costs and energy consumption, and increase production efficiency and stability. However, web alignment technology also faces some challenges and problems, such as sensor selection and installation, controller algorithms and parameters, actuator response and adjustment, and external interference and errors.

[0074] The function of the web alignment system is to avoid problems such as unevenness of the web material during unwinding, rewinding, and coating, thereby improving the performance and stability of lithium batteries. Its main components generally include the following four:

[0075] (1) Web alignment sensor: used to detect the edge, line or center position of the roll material and transmit the detection signal to the controller. Common detection methods include edge detection, line detection, and alignment, and common sensor types include ultrasonic, infrared, laser, and visible light.

[0076] (2) Correction controller: It is used to receive signals from the sensor, compare the deviation between the detected value and the set value, and send control signals to the electric drive for correction. Common control methods include open-loop, closed-loop, and adaptive control.

[0077] (3) Electric actuator: Used to receive signals from the controller and drive the correction components to perform correction actions. Common types of actuators include pneumatic, hydraulic, electric, and electro-hydraulic combined types.

[0078] (4) Correction components: These are used to adjust the lateral position of the roll material and generate correction force. Common correction components include guide rollers, lead screws, and slides.

[0079] In the lithium battery industry, the unwinding and web guiding process moves the entire web coil. Due to the coil's weight and width, the actuator's thrust is crucial. Furthermore, as the coil travels, its weight gradually decreases, placing even greater demands on the actuator's thrust and response time. When the coil is wide and heavy, the actuator must provide sufficient thrust and a fast enough response time. As the coil weight decreases, the controller must adaptively adjust the actuator's thrust and response time to prevent the web guiding system from malfunctioning due to changes in these parameters.

[0080] To address the aforementioned technical problems, this specification provides a correction method, and also relates to a correction device, a computing device, and a computer-readable storage medium, which will be described in detail in the following embodiments.

[0081] Referring to Figure 1, Figure 1 shows a flowchart of a correction method provided according to an embodiment of this specification, which specifically includes the following steps.

[0082] Step 101: When it is determined that the first roll material is switched to the second roll material, the second roll material is calibrated and adapted based on the multiple calibration light sources corresponding to the correction sensor.

[0083] The correction sensor uses a micron-level CCD correction sensor with a detection range of 10mm and a detection accuracy of 10um. It also has a built-in adjustable light source that can be adjusted accordingly after the roll material is switched.

[0084] Specifically, when it is determined that the first roll material is to be switched to the second roll material, multiple calibration light sources corresponding to the correction sensor are switched sequentially to perform light source calibration and adaptation on the second roll material.

[0085] In one possible implementation, the second roll material is calibrated and adapted to the light source. This can be achieved by sequentially switching multiple calibration light sources corresponding to the correction sensor, and then determining the target light source based on the difference between each calibration light source and the second roll material. The specific implementation method is as follows:

[0086] The step of performing light source calibration and adaptation on the second roll material based on multiple calibration light sources corresponding to the correction sensor includes:

[0087] The target calibration light source is determined from a plurality of calibration light sources based on the correction sensor, wherein the target calibration light source is one of the plurality of calibration light sources;

[0088] The second roll material is illuminated based on the target calibration light source to obtain the color value of the roll material light source;

[0089] The target area is illuminated by the target calibration light source to obtain the target light source color value, wherein the target area is the area outside the second roll material within the detection range of the correction sensor;

[0090] The difference value is obtained based on the color value of the roll material light source and the color value of the target light source.

[0091] Specifically, a target calibration light source is randomly selected from multiple calibration light sources corresponding to the correction sensor and switched. The second roll material is illuminated based on the selected target calibration light source to obtain the color value of the roll material light source illuminating the second roll material. The target area outside the second roll material is illuminated based on the selected target calibration light source to obtain the color value of the target light source. Then, the difference between the color value of the roll material light source and the color value of the target light source is calculated to obtain the difference value. Subsequently, a more matching target light source can be obtained based on this difference value.

[0092] Step 102: Determine the target light source corresponding to the second roll material based on the light source calibration and adaptation results.

[0093] The target light source is one of several calibration light sources.

[0094] Specifically, the second roll material is calibrated and adapted using multiple calibration light sources corresponding to the correction sensor to obtain the light source calibration and adaptation results. Then, a target light source that is more suitable for the second roll material is determined from the calibration and adaptation results, so that the correction detection can be performed more accurately based on the target light source in the future.

[0095] In one possible implementation, after obtaining the difference value corresponding to each target calibration light source among multiple calibration light sources, a more suitable target light source can be determined based on the obtained multiple difference values. The specific implementation is as follows:

[0096] The step of determining the target light source corresponding to the second roll material based on the light source calibration and adaptation results includes:

[0097] The target difference value is determined by sorting based on at least two difference values.

[0098] The target light source corresponding to the second roll material is determined based on the target difference value.

[0099] Specifically, after calculating the difference value based on each target calibration light source, at least two calculated difference values ​​are sorted in descending order to obtain the sorting result. The difference value ranked first in the sorting result is determined as the target difference value. Then, the target light source corresponding to the second roll is determined based on the target difference value. That is, the difference value with a significant color difference between the color value of the roll light source and the color value of the target light source is obtained, and the target calibration light source corresponding to the difference value with a significant color difference is determined as the target light source corresponding to the second roll.

[0100] For example, by sequentially switching between multiple calibration light sources corresponding to the correction sensor, the second roll material is calibrated and adapted to the light source. The obtained light source adaptation results are that the difference value corresponding to calibration light source a is 60, the difference value corresponding to calibration light source b is 75, and the difference value corresponding to calibration light source c is 90. The difference values ​​60, 75, and 90 of calibration light source a, calibrated light source b, and calibration light source c are sorted in descending order to obtain the sorting result. Based on the sorting result, it is determined that the first ranked one is calibration light source c corresponding to difference value 90. Therefore, calibration light source c is determined as the target light source corresponding to the second roll material.

[0101] Furthermore, the target light source corresponding to the second roll material can be determined based on the light source calibration and adaptation results. This can be achieved not only by sorting the calculated multiple difference values, but also by setting a preset difference value threshold. The calibration light sources corresponding to the difference values ​​that meet the preset difference value threshold are all identified as candidate light sources, and then a calibration light source is randomly selected from the candidate light sources as the target light source.

[0102] Step 103: Perform spin correction detection on the second roll material based on the target light source and the spin correction sensor.

[0103] Specifically, the detection range of the correction sensor is determined, the proportion range of the second roll material is determined based on the target light source, and the positional shift of the second roll material is determined based on the proportion range of the second roll material and the detection range of the correction sensor.

[0104] In one possible implementation, whether the second roll has shifted position is determined based on the proportion range of the second roll and the detection range of the web correction sensor. This can be determined by the ratio between the proportion range of the second roll and the detection range of the web correction sensor. The specific implementation is as follows:

[0105] The step of performing web correction detection on the second roll material based on the target light source and the web correction sensor includes:

[0106] Determine the detection range of the correction sensor;

[0107] The proportion of the second roll material within the detection range is determined based on the detection range and the target light source.

[0108] Based on the percentage information, it is determined whether the second roll has experienced a positional shift.

[0109] Specifically, the detection range of the correction sensor is determined, and the proportion of the second roll within the detection range of the correction sensor is determined based on the detection range of the correction sensor and the target light source. Then, based on this proportion information, it is determined whether the second roll is different from the preset proportion threshold, and then it is determined whether the second roll has shifted position.

[0110] In one possible implementation, during the determination of the proportion information, the current proportion range of the second roll material can be determined based on the target light source, and then the corresponding proportion information can be determined based on the proportion range and the detection range of the correction sensor. The specific implementation method is as follows:

[0111] Determining the proportion of the second roll within the detection range based on the detection range and the target light source includes:

[0112] The current range information of the second roll material is determined based on the target light source;

[0113] Based on the ratio of the current range information to the detection range, the proportion of the second roll material within the detection range is determined.

[0114] Specifically, based on the target light source determined in the aforementioned process, the current range information of the second roll is determined, the ratio of the current range information to the detection range of the correction sensor is calculated, and then the proportion of the second roll within the detection range of the correction sensor is determined based on this ratio.

[0115] Step 104: After determining that the second roll has shifted position, control the driver to perform centering and correction.

[0116] The driver uses a high-thrust permanent magnet synchronous motor with a maximum thrust of 20KN.

[0117] Specifically, after determining the positional shift of the second roll based on the proportion information, the driver is controlled to perform centering and correction based on the offset position information of the second roll.

[0118] In one possible implementation, after determining the proportion of the second roll within the detection range of the correction sensor, correction detection can be performed based on this proportion to determine whether the second roll has shifted position, facilitating centering and correction of the shifted second roll. The specific implementation is as follows:

[0119] The determination of the positional shift of the second roll material includes:

[0120] Calculate the difference between the stated percentage information and the preset percentage information;

[0121] The difference is compared with a preset difference threshold to generate a comparison result;

[0122] If the difference is determined to be different from the preset difference threshold based on the comparison result, it is determined that the second roll material has experienced a positional shift.

[0123] Specifically, after obtaining the percentage information of the second roll material within the detection range of the correction sensor, the difference between the percentage information and the preset percentage information is calculated, and the difference is compared with the preset difference threshold to generate a comparison result. If the difference is different from the preset difference threshold, it is determined that the second roll material has shifted position and needs to be aligned and corrected.

[0124] When it is determined that the second roll has shifted position and needs to be aligned, the corresponding driver is controlled to perform alignment operation based on the position information of the second roll. The specific implementation method is as follows:

[0125] The control of the driver to perform centering correction includes:

[0126] Obtain the current position information of the second roll;

[0127] The driver is controlled to perform centering and correction based on the current position information and the motor vector control algorithm.

[0128] Specifically, when it is determined that the second roll has shifted position and needs to be aligned and corrected, the current position information of the second roll is obtained, and the driver is controlled to perform alignment and correction based on the current position information and the Field Oriented Control (FOC) algorithm, so as to achieve accurate correction detection.

[0129] Furthermore, the FOC control algorithm improves control precision and ensures smooth switching between forward and reverse rotation at maximum motor speed. It also allows for braking control via energy recovery. The FOC algorithm enables closed-loop control of current (torque), speed, and position, thereby enhancing the stability and reliability of the entire correction system.

[0130] This specification provides a web-correction method in one embodiment, which involves, upon determining that a first web material is being switched to a second web material, performing light source calibration and adaptation on the second web material based on multiple calibration light sources corresponding to a web-correction sensor; determining a target light source corresponding to the second web material based on the light source calibration and adaptation results, wherein the target light source is one of the multiple calibration light sources; performing web-correction detection on the second web material based on the target light source and the web-correction sensor; and, after determining that the second web material has experienced a positional shift, controlling a driver to perform centering and web-correction. This achieves automated switching of the target light source for the web material and precise web-correction detection based on the switched target light source.

[0131] Corresponding to the above method embodiments, this specification also provides embodiments of a web correction device. Figure 2 shows a schematic diagram of the structure of a web correction device provided in one embodiment of this specification. As shown in Figure 2, the device includes:

[0132] The adaptation module 201 is configured to perform light source calibration and adaptation on the second roll material based on multiple calibration light sources corresponding to the correction sensor when the controller determines that the first roll material has been switched to the second roll material.

[0133] The determining module 202 is configured to determine the target light source corresponding to the second roll material based on the light source calibration and adaptation results, wherein the target light source is one of the plurality of calibration light sources;

[0134] The detection module 203 is configured to perform correction detection on the second roll material based on the target light source and the correction sensor;

[0135] The control module 204 is configured to control the driver to perform centering correction after determining that the second roll has shifted position.

[0136] In one possible implementation, the adaptation module 201 is further configured as follows:

[0137] The target calibration light source is determined from a plurality of calibration light sources based on the correction sensor, wherein the target calibration light source is one of the plurality of calibration light sources;

[0138] The second roll material is illuminated based on the target calibration light source to obtain the color value of the roll material light source;

[0139] The target area is illuminated by the target calibration light source to obtain the target light source color value, wherein the target area is the area outside the second roll material within the detection range of the correction sensor;

[0140] The difference value is obtained based on the color value of the roll material light source and the color value of the target light source.

[0141] In one possible implementation, the determining module 202 is further configured as follows:

[0142] The target difference value is determined by sorting based on at least two difference values.

[0143] The target light source corresponding to the second roll material is determined based on the target difference value.

[0144] In one possible implementation, the determining module 202 is further configured as follows:

[0145] Determine the detection range of the correction sensor;

[0146] The proportion of the second roll material within the detection range is determined based on the detection range and the target light source.

[0147] Based on the percentage information, it is determined whether the second roll has experienced a positional shift.

[0148] In one possible implementation, the determining module 202 is further configured as follows:

[0149] The current range information of the second roll material is determined based on the target light source;

[0150] Based on the ratio of the current range information to the detection range, the proportion of the second roll material within the detection range is determined.

[0151] In one possible implementation, the detection module 203 is further configured as follows:

[0152] Calculate the difference between the stated percentage information and the preset percentage information;

[0153] The difference is compared with a preset difference threshold to generate a comparison result;

[0154] If the difference is determined to be different from the preset difference threshold based on the comparison result, it is determined that the second roll material has experienced a positional shift.

[0155] In one possible implementation, the control module 204 is further configured as follows:

[0156] Obtain the current position information of the second roll;

[0157] The driver is controlled to perform centering and correction based on the current position information and the motor vector control algorithm.

[0158] One embodiment of the web-alignment correction device provided in this specification involves, upon determining that a first web roll has been switched to a second web roll, performing light source calibration and adaptation on the second web roll based on multiple calibration light sources corresponding to the web-alignment correction sensor; determining a target light source corresponding to the second web roll based on the light source calibration and adaptation results, wherein the target light source is one of the multiple calibration light sources; performing web-alignment correction detection on the second web roll based on the target light source and the web-alignment correction sensor; and controlling a driver to perform centering and web-alignment correction after determining that the second web roll has experienced a positional shift. This achieves automated switching of the target light source for the web roll and precise web-alignment correction detection based on the switched target light source.

[0159] The above is a schematic scheme of a correction device according to this embodiment. It should be noted that the technical solution of this correction device and the technical solution of the correction method described above belong to the same concept. For details not described in detail in the technical solution of the correction device, please refer to the description of the technical solution of the correction method described above.

[0160] Figure 3 shows a structural block diagram of a computing device 300 according to one embodiment of this specification. The components of the computing device 300 include, but are not limited to, a memory 310 and a processor 320. The processor 320 is connected to the memory 310 via a bus 330, and a database 350 is used to store data.

[0161] The computing device 300 also includes an access device 340, which enables the computing device 300 to communicate via one or more networks 360. Examples of these networks include Public Switched Telephone Network (PSTN), Local Area Network (LAN), Wide Area Network (WAN), Personal Area Network (PAN), or combinations of communication networks such as the Internet. The access device 340 may include one or more of any type of wired or wireless network interface (e.g., a network interface card (NIC)), such as an IEEE 802.11 Wireless Local Area Network (WLAN) wireless interface, a Wi-MAX (Worldwide Interoperability for Microwave Access) interface, an Ethernet interface, a Universal Serial Bus (USB) interface, a cellular network interface, a Bluetooth interface, or a Near Field Communication (NFC) interface.

[0162] In one embodiment of this specification, the aforementioned components of the computing device 300, as well as other components not shown in FIG. 3, may be connected to each other, for example, via a bus. It should be understood that the block diagram of the computing device shown in FIG. 3 is merely for illustrative purposes and is not intended to limit the scope of this specification. Those skilled in the art can add or replace other components as needed.

[0163] The computing device 300 can be any type of stationary or mobile computing device, including mobile computers or mobile computing devices (e.g., tablet computers, personal digital assistants, laptop computers, notebook computers, netbooks, etc.), mobile phones (e.g., smartphones), wearable computing devices (e.g., smartwatches, smart glasses, etc.) or other types of mobile devices, or stationary computing devices such as desktop computers or personal computers (PCs). The computing device 300 can also be a mobile or stationary server.

[0164] The processor 320 executes the following computer-executable instructions, which, when executed by the processor, implement the steps of the above-described correction method. The above is an illustrative scheme of a computing device according to this embodiment. It should be noted that the technical solution of this computing device and the technical solution of the above-described correction method belong to the same concept; details not described in detail in the technical solution of the computing device can be found in the description of the technical solution of the above-described correction method.

[0165] An embodiment of this specification also provides a computer-readable storage medium storing computer-executable instructions that, when executed by a processor, implement the steps of the above-described correction method.

[0166] The above is an illustrative scheme of a computer-readable storage medium according to this embodiment. It should be noted that the technical solution of this storage medium and the technical solution of the above-described correction method belong to the same concept, and all details not described in detail in the technical solution of the storage medium can be found in the description of the technical solution of the above-described correction method.

[0167] An embodiment of this specification also provides a computer program, wherein when the computer program is executed in a computer, it causes the computer to perform the steps of the above-described correction method.

[0168] The above is an illustrative example of a computer program according to this embodiment. It should be noted that the technical solution of this computer program and the technical solution of the aforementioned correction method belong to the same concept. Details not described in detail in the computer program's technical solution can be found in the description of the technical solution of the aforementioned correction method.

[0169] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0170] The computer instructions include computer program code, which may be in the form of source code, object code, executable file, or certain intermediate forms. The computer-readable medium may include any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium may be appropriately added to or subtracted according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media may not include electrical carrier signals and telecommunication signals.

[0171] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the embodiments in this specification are not limited to the described order of actions, because according to the embodiments in this specification, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the embodiments in this specification.

[0172] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0173] The preferred embodiments disclosed above are merely illustrative of this specification. The optional embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the embodiments described herein. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the embodiments, thereby enabling those skilled in the art to better understand and utilize this specification. This specification is limited only by the claims and their full scope and equivalents.

Claims

1. A method for correcting deviations, characterized in that, include: When it is determined that the first roll material is switched to the second roll material, the second roll material is calibrated and adapted based on multiple calibration light sources corresponding to the correction sensor. Based on the light source calibration and adaptation results, a target light source corresponding to the second roll material is determined, wherein the target light source is one of the plurality of calibration light sources; the second roll material is subjected to correction detection based on the target light source and the correction sensor; after determining that the second roll material has a positional offset, the driver is controlled to perform centering correction; the second roll material is subjected to light source calibration and adaptation based on the plurality of calibration light sources of the correction sensor, including: determining a target calibration light source from the plurality of calibration light sources based on the correction sensor, wherein the target calibration light source is one of the plurality of calibration light sources; illuminating the second roll material based on the target calibration light source to obtain the roll material light source color value; illuminating a target area based on the target calibration light source to obtain a target light source color value, wherein the target area is the area outside the second roll material within the detection range of the correction sensor; and obtaining a difference value based on the roll material light source color value and the target light source color value.

2. The method according to claim 1, characterized in that, The step of determining the target light source corresponding to the second roll material based on the light source calibration and adaptation results includes: sorting based on at least two difference values ​​to determine the target difference value; and determining the target light source corresponding to the second roll material based on the target difference value.

3. The method according to claim 1, characterized in that, The step of performing correction detection on the second roll material based on the target light source and the correction sensor includes: determining the detection range of the correction sensor; determining the proportion of the second roll material within the detection range based on the detection range and the target light source; and determining whether the second roll material has experienced a positional shift based on the proportion information.

4. The method according to claim 3, characterized in that, Determining the proportion of the second roll within the detection range based on the detection range and the target light source includes: determining the current range information of the second roll based on the target light source; and determining the proportion information of the second roll within the detection range based on the ratio of the current range information to the detection range.

5. The method according to claim 3, characterized in that, The step of determining that the second roll material has shifted position includes: calculating the difference between the percentage information and the preset percentage information; comparing the difference with a preset difference threshold to generate a comparison result; and determining that the second roll material has shifted position if the difference is different from the preset difference threshold based on the comparison result.

6. The method according to claim 1, characterized in that, The step of controlling the driver to perform centering and correction includes: acquiring the current position information of the second roll material; and controlling the driver to perform centering and correction based on the current position information and a motor vector control algorithm.

7. A detection and correction device, characterized in that, A method for implementing the web correction method according to any one of claims 1 to 6 includes: an adaptation module configured to, upon determining that a first web material is switched to a second web material, perform light source calibration adaptation on the second web material based on a plurality of calibration light sources corresponding to the web correction sensor; a determination module configured to determine a target light source corresponding to the second web material based on the light source calibration adaptation result, wherein the target light source is one of the plurality of calibration light sources; a detection module configured to perform web correction detection on the second web material based on the target light source and the web correction sensor; and a control module configured to, after determining that the second web material has experienced a positional shift, control a driver to perform centering and web correction.

8. A computing device, characterized in that, include: Memory and processor; The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions, which, when executed by the processor, implement the steps of the correction method according to any one of claims 1 to 6.

9. A computer-readable storage medium storing computer-executable instructions that, when executed by a processor, implement the steps of the correction method according to any one of claims 1 to 6.

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