Control method and device for improving surface quality of silicon steel

Abstract

The invention discloses a control method and device for improving the surface quality of silicon steel. The method comprises the steps of obtaining motor current when a brush roller on a cleaning line brushes silicon steel; comparing the motor current with a preset target current; if the motor current is smaller than the target current, matching in a preset target relation table according to a difference current between the motor current and the target current to obtain a rolling reduction; wherein the target relation table comprises a plurality of current difference values and rolling reduction corresponding to each current difference value; and according to the rolling reduction, a lead screw motor is controlled to operate so as to drive the brush roller to operate towards the silicon steel. Therefore, by associating the motor current with the brush roll stroke, the rolling reduction of the brush roll can be accurately controlled when the bristles are abraded, so that the quality defects such as magnesium oxide residues or bristle marks on the surface of the ultra-thin silicon steel are reduced, and the brushing quality of the surface of the silicon steel is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of strip cleaning, in particular to a control method and device for improving the surface quality of silicon steel. BACKGROUND

[0002] For ultra-thin oriented silicon steel, 16 groups of brush rollers are designed in the cleaning tank of the cleaning section of the drawing and leveling coating treatment line, of which 8 groups are on the upper side and 8 groups are on the lower side. The cleaning medium is industrial water, which is used to brush the magnesium oxide dust on the upper and lower surfaces of the strip under the action of the circulating pump to achieve the effect of cleaning the surface of the strip.

[0003] The whole cleaning process is as follows: the circulating pump is started, after the flow is stabilized, the inlet section of the strip is running, and the brush roller is pressed down to start brushing the surface of the strip. When the brush roller has been used for a long time and the bristles are worn, it will cause quality problems such as residual magnesium oxide on the surface of the strip. At this time, the down pressure of the brush roller needs to be manually adjusted, and the forward and reverse rotation of the brush roller screw lifting motor is manually operated to adjust the distance between the brush roller and the surface of the strip. The manual adjustment time is relatively long, and the effect is not good. Once the adjustment is excessive, the brush roller may be pressed too much, causing quality defects such as bristle marks on the surface of the strip. The manual control of the screw motor cannot achieve accurate control effect. SUMMARY

[0004] In view of the above problems, the present application provides a control method and device for improving the surface quality of silicon steel, which reduces the quality defects such as residual magnesium oxide or bristle marks on the surface of ultra-thin silicon steel.

[0005] According to a first aspect of the present application, a control method for improving the surface quality of silicon steel is provided, comprising: obtaining the motor current when the brush roller brushes the silicon steel on the cleaning line; comparing the motor current with the preset target current; if the motor current is less than the target current, matching the difference current between the motor current and the target current in the preset target relationship table to obtain the down pressure; wherein the target relationship table includes a plurality of current differences and the down pressure corresponding to each current difference; controlling the screw motor to run according to the down pressure to drive the brush roller to run towards the silicon steel.

[0006] Optionally, the control of the screw motor according to the down pressure comprises: obtaining the running parameters of the screw; wherein the screw is connected with the screw motor to drive the brush roller to move; determining the motor running information according to the down pressure and the running parameters; Send the motor operation information to the lead screw motor, control the lead screw motor to rotate.

[0007] Optionally, the operation parameter comprises a first lead screw stroke, the first lead screw stroke refers to a stroke of the lead screw when the lead screw rotates one thread; Before the step of determining the motor operation information according to the reduction and the operation parameter, the method comprises: Run the lead screw connected with the lead screw motor to a first position, and acquire a first brush roller position of the brush roller; Run the lead screw to a second position, and acquire a second brush roller position of the brush roller; Determine a rotation thread number of the lead screw according to the first position and the second position; Determine a stroke of the brush roller according to the first brush roller position and the second brush roller position of the brush roller; Determine the first lead screw stroke according to the stroke of the brush roller and the rotation thread number of the lead screw.

[0008] Optionally, the operation parameter comprises a second lead screw stroke, the lead screw stroke refers to a stroke of the lead screw in a unit time; Before the step of determining the motor operation information according to the reduction and the operation parameter, the method comprises: When the lead screw motor is started, acquire a third position corresponding to the lead screw; After the lead screw motor runs a target time, acquire a fourth position corresponding to the lead screw; Determine the second lead screw stroke according to the target time, the third position and the fourth position.

[0009] Optionally, the thickness of the silicon steel is 0.1-0.19mm.

[0010] Optionally, the method further comprises: After the brush roller runs towards the silicon steel, acquire a motor current when the brush roller brushes the silicon steel; If the motor current is less than the target current, send a prompt information of replacing the brush roller to a staff.

[0011] Optionally, the method further comprises: Acquire a surface image of the silicon steel shot by a surface detector; According to the surface image, detect a brushing effect of the silicon steel; If the brushing effect does not meet a preset requirement, send a re-inspection information to a staff.

[0012] According to a second aspect of the present application, a control device for improving the surface quality of silicon steel is provided, comprising: an acquisition module configured to acquire a motor current when a brush roll brushes the silicon steel on a cleaning line; a comparison module configured to compare the motor current with a preset target current; a matching module configured to, if the motor current is less than the target current, match a difference current between the motor current and the target current in a preset target relationship table to obtain a pressing amount, wherein the target relationship table includes a plurality of current differences and a pressing amount corresponding to each current difference; a control module configured to control a screw motor to operate to drive the brush roll to move towards the silicon steel according to the pressing amount.

[0013] According to a third aspect of the present application, a controller is provided, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor executes the control method for improving the surface quality of silicon steel.

[0014] According to a fourth aspect of the present application, a silicon steel cleaning device is provided, comprising a controller, wherein the controller executes the control method for improving the surface quality of silicon steel.

[0015] The above one or more technical solutions in the embodiments of the present application have at least the following technical effects: The control method and device for improving the surface quality of silicon steel provided by the embodiments of the present application acquire a motor current when a brush roll brushes silicon steel on a cleaning line, compare the motor current with a preset target current, if the motor current is less than the target current, match a difference current between the motor current and the target current in a preset target relationship table to obtain a pressing amount, wherein the target relationship table includes a plurality of current differences and a pressing amount corresponding to each current difference, and control a screw motor to operate to drive the brush roll to move towards the silicon steel according to the pressing amount. In this way, the motor current is associated with the travel of the brush roll, and when the bristles are worn, the pressing amount of the brush roll can be accurately controlled, thereby reducing the occurrence of magnesium oxide residues or bristle marks on the surface of the ultra-thin silicon steel, and ensuring the cleaning quality of the surface of the silicon steel.

[0016] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings provided herein are for illustrative purposes only and, therefore, should not be considered to be limiting in any way. Like reference characters in the drawings are denoted by like reference characters throughout the various figures. The drawings contain only preferred embodiments of the application and do not limit the application to the disclosed embodiments. Figure 1 A flow chart of a control method for improving the surface quality of silicon steel in an embodiment of the application is shown.

[0018] Figure 2 A block diagram of a control device for improving the surface quality of silicon steel in an embodiment of the application is shown. DETAILED DESCRIPTION

[0019] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings of the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application but not all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application.

[0021] It should be noted that similar reference numerals and letters in the following drawings represent similar items, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0022] In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, the terms "arrange", "mount", "connect", and "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] For the ultra-thin specification oriented silicon steel, 16 groups of brush rollers are designed in the cleaning tank of the cleaning section of the tension leveling and coating treatment line, of which 8 groups of rollers are on the upper side and 8 groups of rollers are on the lower side. Among them, the cleaning medium is industrial water, which is used to brush the magnesium oxide dust on the upper and lower surfaces of the strip under the action of the circulating pump to achieve the effect of cleaning the surface of the strip.

[0024] The whole cleaning process is: the circulating pump is started, after the flow is stable, the inlet section of the strip steel is operated, and the brush roller is pressed to start brushing the surface of the strip steel. When the brush roller is used for a long time and the brush bristles are worn, it will cause quality problems such as magnesium oxide residue on the surface of the strip steel. At this time, the pressing amount of the brush roller needs to be manually adjusted, and the positive and negative rotation of the brush roller screw lifting motor is manually operated to realize the adjustment of the distance between the brush roller and the surface of the strip steel. The manual adjustment time is relatively long, and the effect is not good. Since the silicon steel is very thin, if the adjustment is excessive, the brush roller may be pressed too much, causing the quality defect of the brush mark on the surface of the strip steel. If the adjustment is insufficient, the brush roller will not be brushed in place, causing magnesium oxide residue on the surface of the strip steel.

[0025] Based on the above situation, the embodiment of the present application provides a control method for improving the surface quality of silicon steel, which combines Figure 1 As shown in the flowchart, the control method for improving the surface quality of silicon steel includes steps 101 to 104: Step 101: acquiring the motor current when the brush roller brushes the silicon steel on the cleaning line; In this embodiment, the silicon steel is ultra-thin oriented silicon steel, and the thickness is in the range of 0.1-0.19mm. Oriented silicon steel, also known as cold-rolled oriented silicon steel, refers to cold-rolled electrical steel containing 2.9%-3.5% Si, and the crystal structure of the steel plate has a certain regularity and direction. It has excellent electromagnetic properties, such as high magnetic permeability and low iron loss, and can efficiently transmit and convert electrical energy in alternating magnetic fields, thereby reducing energy loss and improving the efficiency and performance of the equipment.

[0026] The cleaning line of the oriented silicon steel refers to the production line on the silicon steel cleaning equipment for surface cleaning treatment of the oriented silicon steel. The brushing device on the cleaning line has multiple brush rollers, which brush the upper and lower surfaces of the silicon steel, and can effectively remove stubborn iron powder, scale and other impurities remaining on the surface of the steel strip, thereby ensuring the cleanliness of the surface of the steel strip.

[0027] The brush roller motor is a power source for driving the brush roller to rotate. The brush roller motor is connected with a current sensor, which is used to collect the motor current of the brush roller motor and send the collected motor current to a controller. The controller can be a PLC.

[0028] Step 102: comparing the motor current with a preset target current; In this embodiment, the target current is matched with the currently brushed silicon steel. The target current is a preset value. When the current value of the brush roller motor is within the target current (for example, the motor current is greater than the target current by a certain value), it indicates that the brush roller (the brush roller is a newly replaced brush roller) and the silicon steel are in the best brushing distance, and the brush bristles on the brush roller have the best brushing effect on the surface of the silicon steel.

[0029] However, with actual use, the bristles on the brush roller will wear down. This not only reduces the cleaning effect on the silicon steel surface, but also reduces the actual motor current due to the reduced motor cleaning load.

[0030] Therefore, this embodiment requires comparing the motor current with the target current.

[0031] Step 103: If the motor current is less than the target current, then match the difference between the motor current and the target current in a preset target relationship table to obtain the reduction amount; wherein, the target relationship table includes multiple current differences and the reduction amount corresponding to each current difference; In this embodiment, if the motor current is less than the target current, it indicates that the brush bristles are worn and the distance between the brush roller and the silicon steel is slightly too large, which may lead to an unsatisfactory brushing effect. The brush roller may not be able to reach the surface of the silicon steel, resulting in magnesium oxide residue on the surface of the silicon steel.

[0032] The target relationship table is based on the relationship between the current difference and the corresponding adjustment of the pressure obtained from multiple brushing experiments.

[0033] Current difference refers to the difference between the actual motor current and the target current. Pressure amount refers to the stroke of the brush roller or lead screw.

[0034] Step 104: Based on the pressure amount, control the lead screw motor to drive the brush roller toward the silicon steel.

[0035] In this embodiment, after determining the pressing amount, the PLC calculates based on the operating parameters and the pressing amount to determine the motor operating information, and sends the motor operating information to the lead screw motor to control its rotation. The rotation of the lead screw motor drives the lead screw to run. The lead screw is connected to the brush roller, and the running direction of the lead screw is perpendicular to the silicon steel surface.

[0036] Therefore, the lead screw motor rotates according to the received motor operation information, driving the lead screw to move, thereby adjusting the distance between the brush roller and the silicon steel surface to ensure the washing effect.

[0037] In one optional implementation, the operating parameters include a first lead screw stroke, which refers to the stroke traveled by the lead screw when it rotates one lead screw thread. Before determining the motor operating information based on the compression amount and the operating parameters, the method includes: The lead screw connected to the lead screw motor is moved to the first position, and the first brush roller position of the brush roller is obtained; Move the lead screw to the second position to obtain the second brush roller position; The number of rotating threads of the lead screw is determined based on the first position and the second position. The stroke of the brush roller is determined based on the first brush roller position and the second brush roller position. The first lead screw stroke is determined based on the stroke of the brush roller and the number of rotating threads of the lead screw.

[0038] It should be noted that in this embodiment, the brush roller does not perform silicon steel cleaning. The lead screw can be manually cranked. Before cranking, the first position of the lead screw and the first brush roller position are recorded. After cranking, the second position of the lead screw and the second brush roller position are recorded. The number of screw rotation threads is determined by the first and second positions. The brush roller stroke can be calculated from the first and second brush roller positions. Dividing the brush roller stroke by the number of screw rotation threads yields the brush roller stroke corresponding to each screw thread, i.e., the first lead screw stroke.

[0039] Based on the reduction amount and the first lead screw stroke, the number of threads that the lead screw needs to rotate can be calculated, and then the calculated relevant quantities are sent to the lead screw motor.

[0040] In another alternative implementation, the operating parameters include a second lead screw stroke, which refers to the stroke of the lead screw within a unit of time. Before determining the motor operating information based on the compression amount and the operating parameters, the method includes: When the lead screw motor is started, the third position corresponding to the lead screw is obtained; After the target running time of the lead screw motor, the fourth position corresponding to the lead screw is obtained; The second lead screw stroke is determined based on the target duration, the third position, and the fourth position.

[0041] In this embodiment, the brush roller does not perform silicon steel cleaning. The lead screw motor can be manually started. Before starting, the third position corresponding to the lead screw is recorded, and then timing begins. After the lead screw motor has run for the target duration, the fourth position corresponding to the lead screw is obtained. The stroke of the lead screw is determined by the third and fourth positions. Then, the stroke of the lead screw is divided by the target duration to obtain the stroke of the lead screw per unit time, i.e., the second lead screw stroke.

[0042] Based on the amount of pressure applied and the first lead screw stroke, the duration for which the lead screw motor needs to rotate can be calculated, and then the calculated values ​​can be sent to the lead screw motor.

[0043] Optionally, the method further includes: After the brush roller moves toward the silicon steel, the motor current is obtained when the brush roller brushes the silicon steel; If the motor current is less than the target current, a prompt message is sent to the staff to replace the brush roller.

[0044] In this embodiment, if the actual motor current is still less than the target current after the brush roller is adjusted in terms of pressure, it indicates that the brush bristles are worn excessively and need to be replaced.

[0045] Optionally, the method further includes: Acquire surface images of the silicon steel captured by a surface inspection instrument; The cleaning effect of the silicon steel is detected based on the surface image. If the washing effect does not meet the preset requirements, a re-inspection message will be sent to the staff.

[0046] In this embodiment, after the brush roller is adjusted in pressure, the surface image of the silicon steel is captured by the surface inspection instrument. Based on the captured surface image of the silicon steel, image recognition analysis is performed to determine whether the brushing effect of the silicon steel meets the requirements. If it does not meet the preset requirements, a re-inspection message is sent to the staff. The staff can conduct a re-inspection based on the captured surface image, or they can conduct an on-site re-inspection.

[0047] In summary, the embodiments of this specification provide a control method for improving the surface quality of silicon steel. This method involves acquiring the motor current during the brushing of silicon steel on a cleaning line; comparing the motor current with a preset target current; if the motor current is less than the target current, matching the difference between the motor current and the target current in a preset target relationship table to obtain a pressure reduction amount; wherein the target relationship table includes multiple current differences and a pressure reduction amount corresponding to each current difference; and controlling the operation of a lead screw motor based on the pressure reduction amount to drive the brush roller towards the silicon steel. Thus, by linking the motor current with the brush roller stroke, the pressure reduction amount of the brush roller can be precisely controlled during brush bristle wear, thereby reducing quality defects such as magnesium oxide residue or brush marks on the surface of ultra-thin silicon steel and ensuring the quality of silicon steel surface cleaning.

[0048] Based on the same inventive concept, combined with Figure 2 As shown, this embodiment of the invention also provides a control device for improving the surface quality of silicon steel, comprising: The acquisition module is used to acquire the motor current when the brush rollers on the cleaning line are washing silicon steel. The comparison module is used to compare the motor current with a preset target current; The matching module is used to match the difference between the motor current and the target current in a preset target relationship table if the motor current is less than the target current, thereby obtaining the reduction amount; wherein the target relationship table includes multiple current differences and the reduction amount corresponding to each current difference; The control module is used to control the operation of the lead screw motor according to the pressure amount, so as to drive the brush roller to move towards the silicon steel.

[0049] Optionally, controlling the operation of the lead screw motor according to the compression amount includes: Obtain the operating parameters of the lead screw; wherein the lead screw is connected to the lead screw motor and is used to drive the brush roller to move; Based on the compression amount and the operating parameters, determine the motor operating information; The motor operation information is sent to the lead screw motor to control the lead screw motor to rotate.

[0050] Optionally, the operating parameters include a first lead screw stroke, which refers to the stroke traveled when the lead screw rotates one lead screw thread; Before determining the motor operating information based on the compression amount and the operating parameters, the method includes: The lead screw connected to the lead screw motor is moved to the first position, and the first brush roller position of the brush roller is obtained; Move the lead screw to the second position to obtain the second brush roller position; The number of rotating threads of the lead screw is determined based on the first position and the second position. The stroke of the brush roller is determined based on the first brush roller position and the second brush roller position. The first lead screw stroke is determined based on the stroke of the brush roller and the number of rotating threads of the lead screw.

[0051] Optionally, the operating parameters include a second lead screw stroke, whereby the lead screw stroke refers to the stroke traveled by the lead screw per unit time. Before determining the motor operating information based on the compression amount and the operating parameters, the method includes: When the lead screw motor is started, the third position corresponding to the lead screw is obtained; After the target running time of the lead screw motor, the fourth position corresponding to the lead screw is obtained; The second lead screw stroke is determined based on the target duration, the third position, and the fourth position.

[0052] Optionally, the thickness of the silicon steel is 0.1-0.19 mm.

[0053] Optionally, the method further includes: After the brush roller moves toward the silicon steel, the motor current is obtained when the brush roller brushes the silicon steel; If the motor current is less than the target current, a prompt message is sent to the staff to replace the brush roller.

[0054] Optionally, the method further includes: Acquire surface images of the silicon steel captured by a surface inspection instrument; The cleaning effect of the silicon steel is detected based on the surface image. If the washing effect does not meet the preset requirements, a re-inspection message will be sent to the staff.

[0055] In summary, the control device for improving the surface quality of silicon steel provided in this specification involves acquiring the motor current of the brush rollers during the washing of silicon steel on the cleaning line; comparing the motor current with a preset target current; if the motor current is less than the target current, matching the difference between the motor current and the target current in a preset target relationship table to obtain a pressing amount; wherein the target relationship table includes multiple current differences and a pressing amount corresponding to each current difference; and controlling the operation of the lead screw motor according to the pressing amount to drive the brush rollers towards the silicon steel. Thus, by linking the motor current with the brush roller stroke, the pressing amount of the brush rollers can be precisely controlled when the brush bristles wear down, thereby reducing quality defects such as magnesium oxide residue or brush marks on the surface of ultra-thin silicon steel and ensuring the washing quality of the silicon steel surface.

[0056] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the control device for improving the surface quality of silicon steel described above can be referred to the corresponding process in the aforementioned method, and will not be elaborated further here.

[0057] According to a third aspect of the present invention, a controller is provided, comprising a control device for improving the surface quality of silicon steel, a memory, a processor, and a communication unit. The memory stores machine-readable instructions executable by the processor. When the controller is running, the processor and the memory communicate via a bus, the processor executes the machine-readable instructions, and performs a control method for improving the surface quality of silicon steel.

[0058] The memory, processor, and communication unit are electrically connected directly or indirectly to achieve signal transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The control device for improving the surface quality of silicon steel includes at least one software function module that can be stored in the memory in the form of software or firmware. The processor is used to execute the executable module stored in the memory (e.g., the software function module or computer program included in the control device for improving the surface quality of silicon steel).

[0059] The memory can be, but is not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), etc.

[0060] In some embodiments, the processor is used to perform one or more functions described in this embodiment. In some embodiments, the processor may include one or more processing cores (e.g., a single-core processor (S) or a multi-core processor (S)).

[0061] In this embodiment, the memory is used to store the program, and the processor is used to execute the program after receiving the execution instruction. The process definition method disclosed in any implementation of this embodiment can be applied to the processor, or implemented by the processor.

[0062] The communication unit is used to establish communication connections between the controller and other devices via the network, and to send and receive data via the network.

[0063] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the controller described above can be referred to the corresponding process in the aforementioned method, and will not be elaborated further here.

[0064] According to a fourth aspect of the present invention, a silicon steel cleaning device is provided, including a controller, wherein the controller performs the aforementioned control method for improving the surface quality of silicon steel.

[0065] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the vehicle controller described above can be referred to the corresponding process in the aforementioned method, and will not be elaborated further here.

[0066] The above are merely various embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A control method for improving the surface quality of silicon steel, characterized by, The method comprises the following steps: obtaining the motor current when the brush roller brushes the silicon steel on the cleaning line; comparing the motor current with the preset target current; if the motor current is less than the target current, matching the difference current between the motor current and the target current in the preset target relationship table to obtain the pressure; controlling the operation of the lead screw motor according to the pressure to drive the brush roller to move towards the silicon steel.

2. The method of claim 1, wherein, The method comprises the following steps: obtaining the operation parameter of the lead screw, wherein the lead screw is connected with the lead screw motor to drive the brush roller to move; determining the motor operation information according to the pressure and the operation parameter; sending the motor operation information to the lead screw motor to control the rotation of the lead screw motor.

3. The method of claim 2, wherein, The operation parameter comprises a first lead screw stroke, which refers to the stroke of the lead screw when the lead screw thread rotates one turn; Before determining the motor operation information according to the pressure and the operation parameter, the method comprises the following steps: running the lead screw connected with the lead screw motor to a first position and obtaining the first brush roller position of the brush roller; running the lead screw to a second position and obtaining the second brush roller position of the brush roller; determining the number of rotating threads of the lead screw according to the first position and the second position; determining the stroke of the brush roller according to the first brush roller position and the second brush roller position of the brush roller; determining the first lead screw stroke according to the stroke of the brush roller and the number of rotating threads of the lead screw.

4. The method of claim 2, wherein, The operation parameter comprises a second lead screw stroke, which refers to the stroke of the lead screw in a unit time; Before determining the motor operation information according to the pressure and the operation parameter, the method comprises the following steps: obtaining the third position corresponding to the lead screw when the lead screw motor is started; obtaining the fourth position corresponding to the lead screw after the lead screw motor operates for a target time; determining the second lead screw stroke according to the target time, the third position and the fourth position.

5. The method of claim 1, wherein, The thickness of the silicon steel ranges from 0.1 mm to 0.19 mm.

6. The method of claim 1, wherein, The method further comprises the following steps: obtaining the motor current when the brush roller brushes the silicon steel after the brush roller moves towards the silicon steel; if the motor current is less than the target current, sending the staff a prompt information to replace the brush roller.

7. The method of claim 1, wherein, The method further comprises the following steps: obtaining the surface image of the silicon steel shot by the surface detector; detecting the brushing effect of the silicon steel according to the surface image; if the brushing effect does not meet the preset requirement, sending the staff a re-inspection information.

8. A control device for improving the surface quality of silicon steel, characterized by, The method comprises the following steps: an obtaining module, configured to obtain the motor current when the brush roller brushes the silicon steel on the cleaning line; a comparing module, configured to compare the motor current with the preset target current; The matching module is configured to, if the motor current is less than the target current, match a difference current between the motor current and the target current in a preset target relationship table to obtain a pressing amount, wherein the target relationship table includes a plurality of current differences and a pressing amount corresponding to each current difference. The control module is configured to control the operation of the lead screw motor according to the pressing amount, so as to drive the brush roller to move towards the silicon steel.

9. A controller characterized by comprising: The controller comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to implement the control method for improving the surface quality of silicon steel according to any one of claims 1-7.

10. A silicon steel cleaning apparatus characterized by, An eight-pole controller, wherein the controller executes the control method for improving the surface quality of silicon steel according to any one of claims 1-7. An eight-pole controller, wherein the controller executes the control method for improving the surface quality of silicon steel according to any one of claims 1-7.

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