Method, device and equipment for deviation correction control of double-layer coating and storage medium

Abstract

The application discloses a double-layer coating deviation correction control method and device, equipment and a storage medium. A first analog signal quantity is collected by a first surface coating sensor to detect a material coating state. The first surface coating sensor is installed on one side of a coating equipment after material coating. If the material coating state is material coating deviation, an actual deviation quantity of the material coating is calculated based on the first analog signal quantity and a first preset reference quantity of the first surface coating sensor. The first preset reference quantity of a second surface coating sensor is corrected based on the actual deviation quantity to obtain a target reference quantity. The second surface coating sensor is installed on the same side of the first surface coating sensor before material coating. The coating equipment is controlled based on the target reference quantity to assist the second surface coating sensor before coating in deviation correction control through the detection result of the first surface coating sensor after coating, so that closed-loop deviation correction control is formed, and one set of deviation correction system can realize one-time double-layer coating deviation correction.

Description

Technical Field

[0001] This application relates to the field of coating control technology, and in particular to a method, apparatus, equipment and storage medium for correcting the deviation of a double-layer coating. Background Technology

[0002] During the coating process, the material coating is corrected by a deviation correction controller to align its edges, ensuring the uniformity and accuracy of the coating. This is crucial for guaranteeing coating quality and production efficiency.

[0003] Currently, conventional web guiding controllers typically only achieve edge alignment and correction for single-layer coatings. When users need to align and correct two-layer coatings, a separate web guiding system needs to be configured on each side of the two coatings to perform independent alignment and correction for each layer. Alternatively, one layer can be corrected first, fixed in the appropriate position, and then the second layer can be corrected. However, with technological and market advancements, some coating scenarios require a single web guiding system to achieve alignment and correction of both coatings in one operation, a requirement that conventional web guiding controller-based systems cannot meet. Summary of the Invention

[0004] This application provides a method, apparatus, device, and storage medium for correcting the web coating of a double-layer coating, in order to solve the technical problem that current correcting systems cannot achieve correcting the web coating of a double-layer coating in one go.

[0005] To address the aforementioned technical problems, in a first aspect, this application provides a method for controlling the deviation of a double-layer coating, comprising:

[0006] Based on the first analog signal acquired by the first surface coating sensor, the material coating state is detected. The first surface coating sensor is installed on one side of the coating equipment after the material is coated.

[0007] If the material coating state is a material coating offset, then the actual deviation of the material coating is calculated based on the first analog signal quantity and the first preset reference quantity of the first surface coating sensor;

[0008] Based on the actual deviation, the second preset reference value of the second surface coating sensor is corrected to obtain the target reference value. The second surface coating sensor is installed before the material is coated and is on the same side as the first surface coating sensor.

[0009] Based on the target reference quantity, the coating equipment is subjected to correction control.

[0010] In some implementations of the first aspect, detecting the material coating state based on the first analog signal acquired by the first surface coating sensor includes:

[0011] The first analog signal quantity of the material coating is acquired by the first surface coating sensor;

[0012] If the first analog signal does not meet the preset analog signal condition, the material coating state is determined to be material coating offset.

[0013] In some implementations of the first aspect, calculating the actual deviation of the material coating based on the first analog signal and the first preset reference value of the first surface coating sensor includes:

[0014] The actual deviation of the material coating is obtained by performing a difference calculation between the first analog signal and the first preset reference quantity.

[0015] In some implementations of the first aspect, the step of correcting the second preset reference value of the second surface coating sensor based on the actual deviation to obtain the target reference value includes:

[0016] The difference between the second preset reference value and the actual deviation value is calculated to obtain the value to be corrected;

[0017] Based on the quantity to be corrected, the second preset reference quantity is assigned a value to obtain the target reference quantity.

[0018] In some implementations of the first aspect, the step of performing deviation correction control on the coating equipment based on the target reference quantity includes:

[0019] Obtain the second analog signal acquired by the second surface coating sensor;

[0020] The second analog signal quantity and the target reference quantity are compared to determine the offset direction of the material coating;

[0021] Based on the offset direction, the actuator of the coating device is controlled to move in the reverse direction.

[0022] In some implementations of the first aspect, controlling the actuator of the coating device to move in the reverse direction based on the offset direction includes:

[0023] The offset direction is converted into a voltage signal proportional to the target reference quantity;

[0024] Based on the voltage signal, the actuator is controlled to move in the reverse direction.

[0025] Secondly, this application also provides a double-coated web correction control device, comprising:

[0026] The detection module is used to detect the material coating state based on the first analog signal acquired by the first surface coating sensor, which is installed on one side of the coating equipment after the material is coated.

[0027] The calculation module is used to calculate the actual deviation of the material coating based on the first analog signal and the first preset reference value of the first surface coating sensor if the material coating state is material coating offset.

[0028] The correction module is used to correct the second preset reference value of the second surface coating sensor based on the actual deviation value to obtain the target reference value. The second surface coating sensor is installed before the material is coated and is on the same side as the first surface coating sensor.

[0029] The control module is used to perform deviation correction control on the coating equipment based on the target reference quantity.

[0030] In some implementations of the second aspect, the correction module includes:

[0031] The calculation unit is used to perform difference calculation on the second preset reference quantity and the actual deviation quantity to obtain the quantity to be corrected;

[0032] The assignment unit is used to assign a value to the second preset reference quantity based on the quantity to be corrected, so as to obtain the target reference quantity.

[0033] Thirdly, this application also provides a computer device, including a processor and a memory, the memory being used to store a computer program, which, when executed by the processor, implements the double-layer coating correction control method as described in the first aspect above.

[0034] Fourthly, this application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the double-layer coating correction control method as described in the first aspect above.

[0035] Compared with the prior art, this application has at least the following beneficial effects:

[0036] The first surface coating sensor acquires a first analog signal to detect the material coating state. This sensor is installed on one side of the coating equipment after material coating to simultaneously detect material coating deviation. If the material coating state indicates deviation, the actual deviation is calculated based on the first analog signal and the first preset reference value of the first surface coating sensor, providing a reference for correcting the reference value of the second surface coating sensor. Based on the actual deviation, the second preset reference value of the second surface coating sensor is corrected to obtain a target reference value. The second surface coating sensor is installed before material coating and on the same side as the first surface coating sensor. Based on the target reference value, the coating equipment is subjected to correction control. The first surface coating sensor provides data for the second surface coating sensor, which acts as the primary correction control. The first surface coating sensor continues to detect the coating after correction control, thus using the detection results of the first surface coating sensor after coating to assist the second surface coating sensor before coating in correction control, forming a closed-loop correction control system. This allows for one-time double-layer coating correction with a single correction system. Attached Figure Description

[0037] Figure 1 This is a schematic flowchart illustrating a method for correcting the deviation of a double-layer coating according to an embodiment of this application;

[0038] Figure 2 This is a schematic flowchart illustrating a method for correcting the deviation of a double-layer coating according to another embodiment of this application;

[0039] Figure 3 This is a schematic diagram of the layout structure of the coating equipment shown in the embodiments of this application;

[0040] Figure 4 This is a schematic diagram of the structure of the double-layer coating correction control device shown in the embodiments of this application;

[0041] Figure 5 This is a schematic diagram of the structure of a computer device shown in an embodiment of this application. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0043] Please refer to Figure 1 , Figure 1This is a flowchart illustrating a method for correcting the coating pattern of a double-layer coating, as provided in an embodiment of this application. The method for correcting the coating pattern of this embodiment can be applied to computer equipment, including but not limited to programmable logic controllers (PLCs), distributed control systems (DCS), supervisory control and data acquisition (SCADA) systems, and computer numerical control machine tools (CNCs). This equipment is equipped with a correction controller, which is communicatively connected to the coating equipment, a first coating layer sensor, and a second coating layer sensor. Figure 1 As shown, the double-layer coating correction control method of this embodiment includes steps S101 to S104, which are detailed below:

[0044] Step S101: Detect the material coating state based on the first analog signal acquired by the first surface coating sensor, wherein the first surface coating sensor is installed on one side of the coating equipment after the material is coated.

[0045] In this step, the first surface coating sensor is a sensor device with a surface coating sensing element, which can sense and measure the physical quantities or parameters of the coating surface in real time. The first surface coating sensor is installed after the material is coated to detect offset of the coated material, which is then used for offset correction by the second surface coating sensor. The first and second surface coating sensors can specifically be surface-coated CCD (Charge Coupled Device) sensors, linear CCD sensors, frame transfer CCD sensors, and inverted pulse readout CCD sensors, etc. Examples of surface-coated CCDs include transmissive-reflective surface-coated CCD sensors (which have a transparent photoelectric surface and a reflective photoelectric surface; the transmissive surface receives light transmitted from above, and the reflective surface receives light reflected from below), beam-splitting surface-coated CCD sensors (which use a beam-splitting device on the photoelectric surface to guide light incident from above and below to two independent CCD sensors), and EDMCCD (Electron-multiplying CCD) sensors (each photoelectric surface of which has an amplifier to enhance signal strength, suitable for simultaneous detection of above and below).

[0046] Optionally, in some possible implementations, the first analog signal quantity is a physical quantity characterizing the coverage area of ​​the material coating, including physical quantities characterizing the coverage area of ​​the upper coating and the lower coating, to simultaneously detect the offset of the upper and lower coatings. The material coating state characterizes whether the material coating has offset, including material coating offset and material coating not offset. It should be noted that, for the case where offset exists on any one side, the physical quantity of that side is used as the data basis for subsequent data calculations; for the case where offset exists on both the upper and lower sides, the physical quantity of one of the sides is used as the data basis for subsequent data calculations, and the offset control of the upper and lower coatings is achieved through continuous adjustment of closed-loop offset control.

[0047] Optionally, for any side of the material, if the first analog signal is less than the preset signal, that is, the actual measured material coating coverage is less than the material should cover, it indicates that the double coating of the material has shifted.

[0048] Step S102: If the material coating state is material coating offset, then the actual deviation of the material coating is calculated based on the first analog signal quantity and the first preset reference quantity of the first surface coating sensor.

[0049] In this step, the first preset reference value is a physical quantity characterizing the reference position of the first surface coating sensor, specifically the center value of the first surface coating sensor. For example, if the analog signal range of the first surface coating sensor is 1–3.000V, then the first preset reference value is 1.500V. The actual deviation is a numerical value characterizing the positional offset of the material coating under actual conditions. It can be understood that the first surface coating sensor is fixedly installed on the coating equipment, meaning the first preset reference value of the first surface coating sensor remains unchanged. The first surface coating sensor detects different first analog signal values ​​based on different offsets of the material coating. The actual offset of the material coating is then calculated by comparing the first analog signal value with the first preset reference value.

[0050] Step S103: Based on the actual deviation, the second preset reference value of the second surface coating sensor is corrected to obtain the target reference value. The second surface coating sensor is installed before the material is coated and is on the same side as the first surface coating sensor.

[0051] In this step, the second preset reference value is a physical quantity characterizing the reference position of the second surface coating sensor. It is a physical quantity that can be continuously corrected based on the actual offset during the correction process. The second dual sensor is mounted on the same side of the coating equipment as the first surface coating sensor. The specifications of the second surface coating sensor are the same as those of the first surface coating sensor; that is, the second preset reference value can also be the center value of the second surface coating sensor. For example, if the first preset reference value is 1.5V, then the default value of the second preset reference value is also 1.5V.

[0052] It is understandable that the first coating sensor is used to detect the coating offset after material coating, while the second coating sensor is used to detect the coating offset before material coating. For coating correction, the material position needs to be corrected before coating; that is, the first coating sensor needs to ensure that after correction based on the second coating sensor, it no longer detects coating offset. Therefore, the second sensor needs to be assisted in detecting the positional deviation of the material before coating based on the actual offset. To this end, this embodiment uses the actual deviation detected by the first coating sensor to correct the second preset reference value of the second coating sensor, so that the second coating sensor can consider the coating offset after coating when detecting the material positional deviation before coating, thereby forming a closed-loop correction control and improving correction accuracy.

[0053] Step S104: Based on the target reference quantity, perform deviation correction control on the coating equipment.

[0054] In this step, the target reference quantity is the physical quantity of the reference position of the material before coating, detected by the second coating sensor. Optionally, the second coating sensor detects a second analog signal quantity, calculates the offset of the material before coating based on the second analog signal quantity and the target reference quantity, and controls the actuator of the coating equipment to move according to the offset quantity to achieve deviation correction control.

[0055] It should be noted that the embodiments of this application achieve closed-loop correction control of the material coating through the linkage between the first coating sensor and the second coating sensor; through continuous closed-loop correction control, the correct position of the material coating is ensured.

[0056] Figure 2 A schematic flowchart of a double-layer coating correction control method according to another embodiment of this application is shown. Figure 3 A schematic diagram of the layout structure of a coating apparatus according to an embodiment of this application is shown, wherein C1 is a first surface coating sensor, C2 is a second surface coating sensor, and the controller is the aforementioned computer device.

[0057] like Figure 2 As shown, in some embodiments, step S101 includes:

[0058] The first analog signal quantity of the material coating is acquired by the first surface coating sensor;

[0059] If the first analog signal does not meet the preset analog signal condition, the material coating state is determined to be material coating offset.

[0060] In this embodiment, the preset analog signal quantity condition can be determined according to the specifications of the first surface coating sensor. For example, for a first surface coating sensor based on range detection, the preset analog signal quantity condition can be that the first analog signal quantity is not less than the preset analog signal quantity, that is, the detected coating coverage area is not less than the coating should cover area. As another example, for a first surface coating sensor based on edge detection, the preset analog signal quantity condition is that the first analog signal quantity is not less than the preset analog signal quantity, that is, the detected coating edge should extend beyond the theoretical edge.

[0061] Optionally, the first analog signal of the coating is acquired via C1. For the first analog signal of any side, it is determined whether the first analog signal meets the preset analog signal condition. It should be understood that if the material may be trimmed at the edges after coating, it is necessary to ensure that the coating can cover the trimmed edge (i.e., the trimmed coating should be complete). Therefore, it is only necessary to ensure that the coating is at or beyond the trimmed edge line. If the material does not need to be trimmed after coating, it is necessary to ensure that the coating can cover the entire material (i.e., the material boundary is the coating edge).

[0062] like Figure 2 As shown, in some embodiments, step S102 includes:

[0063] The actual deviation of the material coating is obtained by performing a difference calculation between the first analog signal and the first preset reference quantity.

[0064] In this embodiment, P1 = S1 - J1, where P1 represents the actual deviation, S1 represents the first analog signal quantity, and J1 represents the first preset reference quantity. It should be noted that this embodiment reduces the computational load and difficulty of the coating correction control process through difference calculations, thereby improving the accuracy and efficiency of the correction control through simple calculations.

[0065] like Figure 2 As shown, in some embodiments, step S103 includes:

[0066] The difference between the second preset reference value and the actual deviation value is calculated to obtain the value to be corrected;

[0067] Based on the quantity to be corrected, the second preset reference quantity is assigned a value to obtain the target reference quantity.

[0068] In this embodiment, X = J2 - P1, where X is the amount to be corrected, J2 is the second preset reference amount, and P1 is the actual deviation amount. It should be noted that P1 represents the offset amount after coating. By correcting J2 through P1, J2 can include the offset amount information after coating, so that when C2 detects the offset amount before coating, the offset amount after coating is considered, forming a closed-loop control.

[0069] like Figure 2 As shown, in some embodiments, step S104 includes:

[0070] Obtain the second analog signal acquired by the second surface coating sensor;

[0071] The second analog signal quantity and the target reference quantity are compared to determine the offset direction of the material coating;

[0072] Based on the offset direction, the actuator of the coating device is controlled to move in the reverse direction.

[0073] In this embodiment, optionally, P2 = S2 - J2, where P2 is the offset before coating, S2 is the second analog signal quantity, and J2 is the target reference quantity. The offset direction of the material coating is determined based on P2, and the actuator is controlled to move in the opposite direction to the offset direction to achieve correction control.

[0074] Optionally, the offset direction is converted into a voltage signal proportional to the target reference value; based on the voltage signal, the actuator is controlled to move in the opposite direction. For example, if the analog range of the second coating sensor is 0 to 3.000V, then the range value of 0 to P2 is converted to -100 to 0, and the range value of P2 to 3 is converted to 0 to 100, and the correction control is performed based on the converted values.

[0075] For example, with the sensor's detection range being ±100, and S1=0 and S2=0 when the material position is correct, the closed-loop correction control is as shown in the table below:

[0076]

[0077]

[0078] To implement the double-layer coating correction control method corresponding to the above method embodiments, and to achieve the corresponding functions and technical effects, see [link to relevant documentation]. Figure 4 , Figure 4 This diagram illustrates a structural block diagram of a double-layer coating correction control device according to an embodiment of this application. For ease of explanation, only the parts relevant to this embodiment are shown. The double-layer coating correction control device provided in this embodiment includes:

[0079] Detection module 401 is used to detect the material coating state based on the first analog signal acquired by the first surface coating sensor, wherein the first surface coating sensor is installed on one side of the coating equipment after the material is coated.

[0080] The calculation module 402 is used to calculate the actual deviation of the material coating based on the first analog signal and the first preset reference value of the first surface coating sensor if the material coating state is material coating offset.

[0081] Correction module 403 is used to correct the second preset reference value of the second surface coating sensor based on the actual deviation value to obtain the target reference value. The second surface coating sensor is installed before the material is coated and is on the same side as the first surface coating sensor.

[0082] The control module 404 is used to perform deviation correction control on the coating equipment based on the target reference quantity.

[0083] In some embodiments, the detection module 401 is specifically used for:

[0084] The first analog signal quantity of the material coating is acquired by the first surface coating sensor;

[0085] If the first analog signal does not meet the preset analog signal condition, the material coating state is determined to be material coating offset.

[0086] In some embodiments, the computing module 402 is specifically used for:

[0087] The actual deviation of the material coating is obtained by performing a difference calculation between the first analog signal and the first preset reference quantity.

[0088] In some embodiments, the correction module 403 includes:

[0089] The calculation unit is used to perform difference calculation on the second preset reference quantity and the actual deviation quantity to obtain the quantity to be corrected;

[0090] The assignment unit is used to assign a value to the second preset reference quantity based on the quantity to be corrected, so as to obtain the target reference quantity.

[0091] In some embodiments, the control module 404 includes:

[0092] The acquisition unit is used to acquire the second analog signal quantity collected by the second surface coating sensor;

[0093] A comparison unit is used to compare the second analog signal quantity with the target reference quantity to determine the offset direction of the material coating;

[0094] A control unit is configured to control the actuator of the coating device to move in the reverse direction based on the offset direction.

[0095] In some embodiments, the control unit is specifically used for:

[0096] The offset direction is converted into a voltage signal proportional to the target reference quantity;

[0097] Based on the voltage signal, the actuator is controlled to move in the reverse direction.

[0098] The aforementioned double-layer coating correction control device can implement the double-layer coating correction control method of the above-described method embodiments. The options in the above method embodiments are also applicable to this embodiment, and will not be detailed here. The remaining content of this application embodiment can be referred to the content of the above method embodiments, and will not be repeated in this embodiment.

[0099] Figure 5 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application. Figure 5 As shown, the computer device 5 of this embodiment includes: at least one processor 50 ( Figure 5 (Only one is shown in the diagram), memory 51, and computer program 52 stored in said memory 51 and executable on said at least one processor 50, wherein said processor 50 executes said computer program 52 to implement the steps in any of the above method embodiments.

[0100] The computer device 5 may be a programmable logic controller (PLC), a distributed control system (DCS), a supervisory control and data acquisition (SCADA) system, or a computer numerical control machine tool (CNC), etc. This computer device may include, but is not limited to, a processor 50 and a memory 51. Those skilled in the art will understand that... Figure 5 The computer device 5 is merely an example and does not constitute a limitation on the computer device 5. It may include more or fewer components than shown, or combine certain components, or different components, such as input / output devices, network access devices, etc.

[0101] The processor 50 may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0102] In some embodiments, the memory 51 may be an internal storage unit of the computer device 5, such as a hard disk or memory of the computer device 5. In other embodiments, the memory 51 may be an external storage device of the computer device 5, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the computer device 5. Furthermore, the memory 51 may include both internal and external storage units of the computer device 5. The memory 51 is used to store the operating system, applications, bootloader, data, and other programs, such as the program code of the computer program. The memory 51 can also be used to temporarily store data that has been output or will be output.

[0103] In addition, embodiments of this application also provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps in any of the above method embodiments.

[0104] This application provides a computer program product that, when run on a computer device, enables the computer device to execute the steps described in the various method embodiments above.

[0105] In the several embodiments provided in this application, it will be understood that each block in the flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those shown in the figures. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved.

[0106] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0107] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above descriptions are merely specific embodiments of this application and are not intended to limit the scope of protection of this application. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application for those skilled in the art.

Claims

1. A method for controlling the deviation of a double-layer coating, characterized in that, include: The material coating state is detected based on the first analog signal quantity collected by the first surface coating sensor. The first surface coating sensor is installed on one side of the coating equipment after the material is coated. The first analog signal quantity is a physical quantity that characterizes the material coating coverage area, including physical quantities that characterize the coating coverage area on the upper surface of the material and the coating coverage area on the lower surface of the material. If the material coating state is a material coating offset, then the actual deviation of the material coating is calculated based on the first analog signal quantity and the first preset reference quantity of the first surface coating sensor; Based on the actual deviation, the second preset reference value of the second surface coating sensor is corrected to obtain the target reference value. The second surface coating sensor is installed before the material is coated and is on the same side as the first surface coating sensor. Based on the target reference quantity, the coating equipment is subjected to correction control; The step of correcting the second preset reference value of the second surface coating sensor based on the actual deviation to obtain the target reference value includes: The difference between the second preset reference value and the actual deviation value is calculated to obtain the value to be corrected; Based on the quantity to be corrected, the second preset reference quantity is assigned a value to obtain the target reference quantity.

2. The method for correcting deviations in a double-layer coating as described in claim 1, characterized in that, The detection of the material coating state based on the first analog signal acquired by the first surface coating sensor includes: The first analog signal quantity of the material coating is acquired by the first surface coating sensor; If the first analog signal does not meet the preset analog signal condition, the material coating state is determined to be material coating offset.

3. The method for correcting deviations in a double-layer coating as described in claim 1, characterized in that, The calculation of the actual deviation of the material coating based on the first analog signal quantity and the first preset reference quantity of the first surface coating sensor includes: The actual deviation of the material coating is obtained by performing a difference calculation between the first analog signal and the first preset reference quantity.

4. The method for correcting and controlling the double-layer coating as described in claim 1, characterized in that, The step of performing deviation correction control on the coating equipment based on the target reference quantity includes: Obtain the second analog signal acquired by the second surface coating sensor; The second analog signal quantity and the target reference quantity are compared to determine the offset direction of the material coating; Based on the offset direction, the actuator of the coating device is controlled to move in the reverse direction.

5. The method for correcting deviations in a double-layer coating as described in claim 4, characterized in that, The step of controlling the actuator of the coating device to move in the reverse direction based on the offset direction includes: The offset direction is converted into a voltage signal proportional to the target reference quantity; Based on the voltage signal, the actuator is controlled to move in the reverse direction.

6. A double-coated web guiding control device, characterized in that, include: The detection module is used to detect the material coating state based on the first analog signal quantity collected by the first surface coating sensor. The first surface coating sensor is installed on one side of the coating equipment after the material is coated. The first analog signal quantity is a physical quantity that characterizes the material coating coverage area, including physical quantities that characterize the coating coverage area on the upper surface of the material and physical quantities that characterize the coating coverage area on the lower surface of the material. The calculation module is used to calculate the actual deviation of the material coating based on the first analog signal and the first preset reference value of the first surface coating sensor if the material coating state is material coating offset. The correction module is used to correct the second preset reference value of the second surface coating sensor based on the actual deviation value to obtain the target reference value. The second surface coating sensor is installed before the material is coated and is on the same side as the first surface coating sensor. The control module is used to perform deviation correction control on the coating equipment based on the target reference quantity; The correction module includes: The calculation unit is used to perform difference calculation on the second preset reference quantity and the actual deviation quantity to obtain the quantity to be corrected; The assignment unit is used to assign a value to the second preset reference quantity based on the quantity to be corrected, so as to obtain the target reference quantity.

7. A computer device, characterized in that, It includes a processor and a memory, the memory being used to store a computer program, which, when executed by the processor, implements the correction control method for the double-layer coating as described in any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the correction control method for the double-layer coating as described in any one of claims 1 to 5.

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