Tension roller motor monitoring method based on stable duration and electronic equipment

Abstract

The invention provides a tension roller motor monitoring method based on stable duration and electronic equipment, and relates to the technical field of steel rolling production lines. The method can determine a first starting moment when the tension roller motor enters a speed-up mode or a speed-down mode. Receiving the actual linear speed, collected by a speed sensor corresponding to the tension roller motor, of the tension roller motor, and determining a second starting moment when the actual linear speed of the tension roller motor enters the target linear speed range; and determining whether the actual linear speed of the tension roller motor can maintain the preset maintenance duration in the target linear speed range or not. And if the preset maintaining time length can be maintained, determining the stable time length when the actual linear speed of the tension roller motor is stable according to the first starting moment, the second starting moment and the preset maintaining time length. If the stable duration is larger than the first duration threshold value, the alarm information used for representing abnormal operation of the tension roller motor is output, no extra hardware cost exists, few computing resources are occupied, and a high-performance processor does not need to be configured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rolling production lines, and in particular to a monitoring method for a tension roller motor based on a stable time length and an electronic device. BACKGROUND

[0002] In the field of rolling in the metallurgical industry, the tension roller motor as a key device, its running state directly affects the control accuracy and reliability of the entire rolling production line. Especially for continuous production lines, the state of the tension roller motor directly determines whether the production of the unit is smooth, and thus directly affects the quality and yield of the final product.

[0003] However, in a complex industrial environment, the tension roller motor can cause abnormalities for various reasons. For example, electromagnetic interference caused by frequency converters and high-power cables; high-frequency vibration caused by strip deviation, transient overload or unbalanced roller system, resulting in loose bolts or structural damage; mechanical wear and tear and insulation aging; and so on. Therefore, it is necessary to detect the abnormalities caused by the tension roller motor in a timely manner.

[0004] Currently, multiple sensors, such as vibration sensors, temperature sensors, and voiceprint sensors, need to be installed on the rolling production line. Then, an AI large model is used to identify whether the tension roller motor has occurred based on the vibration data collected by the vibration sensor, the temperature data collected by the temperature sensor, and the voiceprint data collected by the voiceprint sensor. In this way, additional hardware costs are required, installation is difficult, labor costs are high, and a large amount of computing resources are occupied, requiring the configuration of high-performance processors. SUMMARY

[0005] The present application provides a monitoring method for a tension roller motor based on a stable time length and an electronic device, which solves the problem of identifying whether the tension roller motor has occurred in the prior art, requiring additional hardware costs, high installation difficulty, and large computing resources, and requiring the configuration of high-performance processors.

[0006] In a first aspect, the present application provides a monitoring method for a tension roller motor based on a stable time length, applied to a main controller, the main controller being configured in a rolling production line, the rolling production line including multiple tension roller motors, each tension roller motor being provided with a speed sensor, and the method provided by the present application comprising: For any tension roller motor, when the tension roller motor enters the speed-up mode or the speed-down mode, the first starting time when the tension roller motor enters the speed-up mode or the speed-down mode is determined. receive an actual linear speed of the tension roller motor collected by a speed sensor corresponding to the tension roller motor, and determine a second starting moment at which the actual linear speed of the tension roller motor enters a target linear speed range, wherein the target linear speed range is a range in which a speed difference between the actual linear speed of the tension roller motor and the set rotating speed is less than a set difference threshold value; determine whether the actual linear speed of the tension roller motor can be maintained for a preset maintenance duration in the target linear speed range; if the actual linear speed of the tension roller motor can be maintained for the preset maintenance duration, determine a stable duration for which the actual linear speed of the tension roller motor reaches stability according to the first starting moment, the second starting moment and the preset maintenance duration; if the stable duration is greater than a first duration threshold value, output alarm information for representing an abnormal operation of the tension roller motor.

[0007] In some embodiments, before the stable duration is greater than the first duration threshold value, the method provided by the present application further comprises: obtaining an identifier of the tension roller motor, and determining a speed interval to which a starting linear speed of the tension roller motor belongs at the first starting moment; determining the first duration threshold value according to the speed interval to which the starting linear speed of the tension roller motor belongs and / or the identifier of the tension roller motor, wherein the greater the lower limit value of the speed interval of the starting linear speed, the smaller the first duration threshold value.

[0008] In some embodiments, if the stable duration is greater than the first duration threshold value, outputting the alarm information for representing the abnormal operation of the tension roller motor comprises: if the stable duration is greater than a second duration threshold value, outputting first-level alarm information for representing the abnormal operation of the tension roller motor and controlling the tension roller motor to stop running, wherein the second duration threshold value is greater than the first duration threshold value, and the first-level alarm information is used to represent a serious abnormality of the tension roller motor; if the stable duration is greater than the first duration threshold value and less than the second duration threshold value, outputting second-level alarm information for representing the abnormal operation of the tension roller motor, wherein the second-level alarm information is used to represent a slight abnormality of the tension roller motor.

[0009] In some embodiments, determining the stable duration for which the actual linear speed of the tension roller motor reaches stability according to the first starting moment, the second starting moment and the preset maintenance duration comprises: determining the stable duration for which the actual linear speed of the tension roller motor reaches stability according to the formula , , is the stable duration for which the actual linear speed of the tension roller motor reaches stability, is the first starting moment, is the second starting moment, is a preset maintaining duration.

[0010] In some embodiments, the stable duration in which the actual linear speed of the tension roller motor reaches stability is determined according to the first starting time, the second starting time, and the preset maintaining duration, including: receiving the actual linear speed of the tension roller motor collected by a speed sensor of the tension roller motor; determining the speed difference of the tension roller motor according to the formula , wherein, is the speed difference of the tension roller motor, is a preset reference speed, is a preset speed additional value, is the actual linear speed of the tension roller motor; in a case where the speed difference of the tension roller motor is less than a set speed difference threshold, determining the stable duration in which the actual linear speed of the tension roller motor reaches stability according to the first starting time, the second starting time, and the preset maintaining duration.

[0011] In some embodiments, the method provided by the present application further includes: for any tension roller motor, receiving a set of actual linear speeds of the tension roller motor at each time point collected by a speed sensor of the tension roller motor; differentiating the set of actual linear speeds of the tension roller motor at each time point to obtain an actual acceleration of the tension roller motor; determining an absolute value of a difference between the actual acceleration of the tension roller motor and a preset acceleration threshold value; determining whether the absolute value of the difference is greater than a historical difference extreme value; if the absolute value of the difference is greater than the set historical difference extreme value, outputting a first-level alarm information for representing an abnormal operation of the tension roller motor and controlling the tension roller motor to stop running, and the first-level alarm information is used to represent that the tension roller motor has a serious abnormality.

[0012] In some embodiments, before determining whether the absolute value of the difference is greater than the historical difference extreme value, the method provided by the present application further includes: obtaining an identifier of the tension roller motor and determining a speed interval to which a starting linear speed of the tension roller motor belongs at the first starting time; determining the historical difference extreme value according to the speed interval to which the starting linear speed of the tension roller motor belongs and / or the identifier of the tension roller motor, wherein the greater the lower limit value of the speed interval of the starting linear speed, the smaller the historical difference extreme value.

[0013] In a second aspect, the present application also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, when the processor executes the computer program, the electronic device executes the method provided in the first aspect of the present application.

[0014] In a third aspect, the present application provides a storage medium, the storage medium stores a computer program, when the computer program is executed by a processor, the computer executes the method provided in the first aspect of the present application.

[0015] In a fourth aspect, the present application also provides a computer program product, comprising a computer program, when the computer program is executed, the electronic device executes the method provided in the first aspect of the present application.

[0016] The present application provides a monitoring method of a tension roller motor based on a stable time length and an electronic device. For any tension roller motor, when the tension roller motor enters a speed-up mode or a speed-down mode, a first starting time when the tension roller motor enters the speed-up mode or the speed-down mode can be determined. The actual linear speed of the tension roller motor collected by a speed sensor corresponding to the tension roller motor is received, and a second starting time when the actual linear speed of the tension roller motor enters a target linear speed range is determined. Whether the actual linear speed of the tension roller motor can maintain a preset maintenance time length in the target linear speed range is determined. If the actual linear speed of the tension roller motor can maintain the preset maintenance time length, the stable time length when the actual linear speed of the tension roller motor reaches stability is determined according to the first starting time, the second starting time, and the preset maintenance time length. If the stable time length is greater than a first time threshold, it indicates that the bearing of the tension roller motor or the insulation layer of the tension roller motor has a problem such as degradation, and therefore, alarm information for representing the running abnormality of the tension roller motor is output. In this way, the running abnormality of the tension roller motor can be accurately alarmed, the speed sensor is a device part of the tension roller motor, there is no additional hardware cost and installation labor cost, and the occupied computing resources are small, and a high-performance processor does not need to be configured. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without any creative labor.

[0018] Figure 1 One of the flowcharts of the monitoring method of the tension roller motor based on the stable time length provided by the embodiments of the present application; Figure 2 The second flowchart of the monitoring method of the tension roller motor based on the stable time length provided by the embodiments of the present application; Figure 3 A functional module block diagram of a monitoring device for a tension roller motor based on a stable time length is provided for an embodiment of the present application. DETAILED DESCRIPTION

[0019] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it is to be understood that these descriptions are only exemplary and are not intended to limit the scope of the present disclosure. Also, in the following description, descriptions of well-known structures and techniques have been omitted to avoid unnecessarily obscuring the concept of the present disclosure.

[0020] In the drawings, various structural schematic diagrams according to embodiments of the present disclosure are shown. These diagrams are not drawn to scale, in which certain details are exaggerated for the purpose of clarity and certain details can be omitted. The shapes of various regions, layers shown in the drawings, and their relative sizes and positional relationships are only exemplary, and in actuality, they can deviate due to manufacturing tolerances or technical limitations, and a person skilled in the art can additionally design regions / layers with different shapes, sizes, relative positions according to actual needs.

[0021] In the context of the present disclosure, when a layer / element is referred to as being located "on" another layer / element, the layer / element can be directly located on the other layer / element, or there can be an intervening layer / element between them. In addition, if a layer / element is located "on" another layer / element in one orientation, it can be located "under" the other layer / element when the orientation is reversed.

[0022] Below, the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems are described in detail with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0023] An embodiment of the present application provides a monitoring method for a tension roller motor based on a stable time length, applied to a main controller, the main controller being configured in a rolling production line, the rolling production line including a plurality of tension roller motors, each tension roller motor being provided with a speed sensor. As shown in the figure, the method provided by the embodiment of the present application includes: Figure 1 S101: For any tension roller motor, when the tension roller motor enters a speed-up mode or a speed-down mode, determining a first start time at which the tension roller motor enters the speed-up mode or the speed-down mode. S102: Receiving an actual linear speed of the tension roller motor collected by the speed sensor corresponding to the tension roller motor, and determining a second start time at which the actual linear speed of the tension roller motor enters a target linear speed range.

[0024] S102: Receiving an actual linear speed of the tension roller motor collected by the speed sensor corresponding to the tension roller motor, and determining a second start time at which the actual linear speed of the tension roller motor enters a target linear speed range.

[0025] The target linear speed range can be, but is not limited to, a speed within a preset proportion range (e.g., 90%-110%) of the set rotation speed. For example, the speed sensor can be, but is not limited to, an encoder, and the target linear speed range is a range in which the actual linear speed of the tension roller motor and the rotation speed difference of the set rotation speed is less than a set difference threshold.

[0026] S103: Determine whether the actual linear speed of the tension roller motor can be maintained for a preset maintenance duration in the target linear speed range. If yes, perform S104.

[0027] For example, the preset maintenance duration can be, but is not limited to, 0.4s or 0.5s, etc.

[0028] S104: Determine the stable duration for the actual linear speed of the tension roller motor to reach stability according to the first starting time, the second starting time, and the preset maintenance duration.

[0029] For example, the stable duration for the actual linear speed of the tension roller motor to reach stability can be determined according to the formula is the stable duration for the actual linear speed of the tension roller motor to reach stability, is the first starting time, is the second starting time, is the preset maintenance duration.

[0030] S104 can be specifically implemented as: Step A: Receive the actual linear speed of the tension roller motor collected by the speed sensor of the tension roller motor.

[0031] Step B: Determine the speed difference of the tension roller motor according to the formula is the speed difference of the tension roller motor, is a preset reference speed, is a preset speed additional value, is the actual linear speed of the tension roller motor.

[0032] Step C: In the case where the speed difference of the tension roller motor is less than a set speed difference threshold, determine the stable duration for the actual linear speed of the tension roller motor to reach stability according to the first starting time, the second starting time, and the preset maintenance duration.

[0033] Based on the above steps A-C, in the case where the tension roller motor cannot be monitored for abnormalities through the speed difference, the tension roller motor can still be monitored for abnormalities through the stable duration for the actual linear speed of the tension roller motor to reach stability.

[0034] ​​​S105: If the stable duration is greater than the first duration threshold, output alarm information for representing that the tension roller motor is running abnormally.

[0035] Exemplarily, the first duration threshold can be acquired in advance. Specifically, the acquisition manner comprises: Step 1: Acquire the identification of the tension roller motor. The identification of the tension roller motor can include but is not limited to B1R1, B1R2, B2R1, etc.

[0036] Step 2: At a first starting time, determine the speed interval to which the starting linear speed of the tension roller motor belongs.

[0037] For example, the speed interval to which the starting linear speed belongs can include but is not limited to a speed interval less than or equal to 60 m / min and a speed interval greater than 60 m / min.

[0038] Step 3: According to the speed interval to which the starting linear speed of the tension roller motor belongs and / or the identification of the tension roller motor, determine the first duration threshold, wherein the greater the lower limit value of the speed interval of the starting linear speed, the smaller the first duration threshold.

[0039] Exemplarily, the speed interval to which the starting linear speed belongs and the identification of the tension roller motor correspond to the first duration threshold as shown in Table 1. In Table 1, 1.10, 0.70, 1.15 and 0.75, etc. are different speed intervals of starting linear speed and identifications of tension roller motors, which correspond to the first duration threshold respectively.

[0040]

[0041] Table 1 Exemplarily, if the stable duration is greater than the second duration threshold, output first-level alarm information for representing that the tension roller motor is running abnormally and control the tension roller motor to stop running. The second duration threshold is greater than the first duration threshold, and the first-level alarm information is used to represent that the tension roller motor has a serious abnormality. The second duration threshold can be , wherein the historical reference stable duration.

[0042] Exemplarily, if the stable duration is greater than the first duration threshold and less than the second duration threshold, output second-level alarm information for representing that the tension roller motor is running abnormally. The second-level alarm information is used to represent that the tension roller motor has a slight abnormality. The first duration threshold can be , and the second duration threshold can be , wherein is a preset historical reference stable duration.

[0043] In summary, the monitoring method for the tension roller motor based on the stable time length provided by the embodiments of the present application can determine the first starting time when the tension roller motor enters the speed-up mode or the speed-down mode for any tension roller motor. The actual linear speed of the tension roller motor collected by the speed sensor corresponding to the tension roller motor is received, and the second starting time when the actual linear speed of the tension roller motor enters the target linear speed range is determined. It is determined whether the actual linear speed of the tension roller motor can maintain the preset maintenance time length in the target linear speed range. If the actual linear speed of the tension roller motor can maintain the preset maintenance time length, the stable time length when the actual linear speed of the tension roller motor reaches stability is determined according to the first starting time, the second starting time and the preset maintenance time length. If the stable time length is greater than the first time threshold, it indicates that the bearing of the tension roller motor or the insulation layer of the tension roller motor has a problem such as a decrease, and therefore, the alarm information for representing the operation abnormality of the tension roller motor is output. In this way, the operation abnormality of the tension roller motor can be accurately alarmed, the speed sensor is a device part of the tension roller motor, no additional hardware cost and installation labor cost are required, and the occupied computing resources are small, and a high-performance processor does not need to be configured.

[0044] In addition, as shown in Figure 2 the method provided by the embodiments of the present application can further include: S201: For any tension roller motor, receive a set of actual linear speeds of the tension roller motor at each time collected by a speed sensor of the tension roller motor.

[0045] S202: Differentiate the set of actual linear speeds of the tension roller motor at each time to obtain the actual acceleration of the tension roller motor.

[0046] S203: Determine the absolute value of the difference between the actual acceleration of the tension roller motor and the preset acceleration threshold.

[0047] S204: Determine whether the absolute value of the difference is greater than the historical difference extreme value, and if so, perform S205.

[0048] S205: Output a first-level alarm information for representing the operation abnormality of the tension roller motor and control the tension roller motor to stop running, and the first-level alarm information is used to represent that the tension roller motor has a serious abnormality.

[0049] It can be understood that in the case where the absolute value of the difference is greater than the historical difference extreme value, it indicates that the tension roller motor has a serious operation abnormality, and therefore, the first-level alarm information is output.

[0050] Specifically, the historical difference extreme values ​​can be obtained in advance. Specifically, the acquisition method includes: obtaining the identifier of the tension roller motor and, at the first initial moment, determining the speed range to which the initial linear velocity of the tension roller motor belongs; determining the historical difference extreme values ​​based on the speed range to which the initial linear velocity of the tension roller motor belongs and / or the identifier of the tension roller motor, wherein the larger the lower limit of the speed range of the initial linear velocity, the smaller the historical difference extreme value.

[0051] For example, the linear speed range of the tension roller motor may include, but is not limited to, a speed range less than or equal to 60 m / min and a speed range greater than 60 m / min.

[0052] For example, the speed range of the linear velocity of the tension roller motor and the identifier of the tension roller motor, and the corresponding first duration threshold can be shown in Table 2 below. Among them, 3.32, 2.15, 3.33 and 2.14 in Table 1 are different speed ranges of the linear velocity of the tension roller motor and the identifier of the tension roller motor, respectively, and the historical difference extreme values.

[0053]

[0054] Table 2 It should be noted that if the hardware components of the tension roller motor, such as the gearbox, motor, or connector, are replaced, the aforementioned historical difference extreme values ​​and the first duration threshold need to be recalibrated.

[0055] Please see Figure 3 This application also provides a monitoring device for tension roller motors based on stable duration, applied to a main controller. It should be noted that the basic principle and technical effects of the monitoring device for tension roller motors based on stable duration provided in this application are the same as those in the above embodiments. For the sake of brevity, any parts not mentioned in this application can be referred to the corresponding content in the above embodiments. The main controller is configured in a steel rolling production line, which includes multiple tension roller motors, each equipped with a speed sensor. The device provided in this application includes a first moment determination unit, a second moment determination unit, a duration determination unit, a stable duration determination unit, and an abnormal alarm unit. The first moment determination unit is used to determine the first starting moment when the tension roller motor enters the speed-up mode or the speed-down mode for any tension roller motor.

[0056] The second time point determination unit is configured to receive an actual linear speed of the tension roller motor collected by a speed sensor corresponding to the tension roller motor, and determine a second starting time point at which the actual linear speed of the tension roller motor enters a target linear speed range, where the target linear speed range is a range in which a speed difference between the actual linear speed of the tension roller motor and the set rotating speed is less than a set difference threshold value.

[0057] The time length determination unit is configured to determine whether the actual linear speed of the tension roller motor can be maintained for a preset maintenance time length in the target linear speed range.

[0058] The stable time length determination unit is configured to, if the actual linear speed of the tension roller motor can be maintained for the preset maintenance time length, determine a stable time length at which the actual linear speed of the tension roller motor reaches stability according to the first starting time point, the second starting time point, and the preset maintenance time length.

[0059] The abnormality alarm unit is configured to, if the stable time length is greater than a first time length threshold value, output alarm information for representing an abnormality of the tension roller motor.

[0060] In some embodiments, the device provided by the embodiments of the present application further includes a time length threshold value determination unit configured to obtain an identifier of the tension roller motor and determine, at the first starting time point, a speed interval to which a starting linear speed of the tension roller motor belongs; and determine the first time length threshold value according to the speed interval of the starting linear speed of the tension roller motor and / or the identifier of the tension roller motor, where the greater the lower limit value of the speed interval of the starting linear speed, the smaller the first time length threshold value.

[0061] In some embodiments, the abnormality alarm unit is specifically configured to, if the stable time length is greater than a second time length threshold value, output first-level alarm information for representing an abnormality of the tension roller motor and control the tension roller motor to stop running, where the second time length threshold value is greater than the first time length threshold value, and the first-level alarm information is used to represent a serious abnormality of the tension roller motor; and if the stable time length is greater than the first time length threshold value and less than the second time length threshold value, output second-level alarm information for representing an abnormality of the tension roller motor, where the second-level alarm information is used to represent a slight abnormality of the tension roller motor.

[0062] In some embodiments, the stable time length determination unit is specifically configured to determine the stable time length at which the actual linear speed of the tension roller motor reaches stability according to an algorithm is the stable time length at which the actual linear speed of the tension roller motor reaches stability, is the first starting time point, is the second starting time point, is the preset maintenance time length.

[0063] ​​In some embodiments, the stability duration determination unit is further configured to receive an actual linear speed of the tension roller motor collected by a speed sensor of the tension roller motor; determine a speed difference of the tension roller motor according to the formula , wherein, is the speed difference of the tension roller motor, is a preset reference speed, is a preset speed addition value, is the actual linear speed of the tension roller motor; and determine a stability duration of the actual linear speed of the tension roller motor reaching stability according to the first starting time, the second starting time and a preset maintenance duration, in a case where the speed difference of the tension roller motor is less than a preset speed difference threshold.

[0064] In some embodiments, the apparatus provided by the embodiments of the present application further includes: a data receiving unit configured to receive, for any tension roller motor, a set of actual linear speeds of the tension roller motor at respective time points collected by a speed sensor of the tension roller motor; an acceleration obtaining unit configured to differentiate the set of actual linear speeds of the tension roller motor at the respective time points to obtain an actual acceleration of the tension roller motor; a data determination unit configured to determine an absolute value of a difference between the actual acceleration of the tension roller motor and a preset acceleration threshold value; a data judgment unit configured to determine whether the absolute value of the difference is greater than a historical difference extreme value; an abnormality alarm unit configured to output a first-level alarm information for representing an abnormal operation of the tension roller motor and control the tension roller motor to stop running, in a case where the absolute value of the difference is greater than the preset historical difference extreme value, the first-level alarm information being used to represent that the tension roller motor has a serious abnormality.

[0065] In some embodiments, the apparatus provided by the embodiments of the present application further includes: an extreme value determination unit configured to obtain an identifier of the tension roller motor and determine a speed interval to which a starting linear speed of the tension roller motor belongs at a first starting time; and determine the historical difference extreme value according to the speed interval to which the starting linear speed of the tension roller motor belongs and / or the identifier of the tension roller motor, wherein the greater the lower limit value of the speed interval to which the starting linear speed belongs, the smaller the historical difference extreme value.

[0066] In addition, the embodiments of the present application further provide an electronic device including 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 enable the electronic device to perform the method provided by the above-mentioned embodiments of the present application.

[0067] In addition, the embodiment of the present application further provides a storage medium, the storage medium stores a computer program, and the computer program is executed by a processor to enable a computer to execute the method provided by the above-mentioned embodiment of the present application.

[0068] In addition, the embodiment of the present application further provides a computer program product, comprising a computer program, when the computer program is executed, enabling an electronic device to execute the method provided by the above-mentioned embodiment of the present application.

[0069] In the above description, the technical details such as the configuration of each layer are not described in detail. However, those skilled in the art should understand that the layers, regions and the like with the required shape can be formed by various technical means. In addition, those skilled in the art can also design methods that are not exactly the same as the above-described methods in order to form the same structure. In addition, although each embodiment is described above, this does not mean that the measures in each embodiment cannot be used advantageously in combination.

[0070] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all the preferred embodiments and all the changes and modifications falling within the scope of the present application.

[0071] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A monitoring method for a tension roller motor based on a stable duration, characterized in that, The method, applied to a main controller configured in a steel rolling production line, includes multiple tension roller motors, each tension roller motor equipped with a speed sensor, and comprises: For any of the tension roller motors, when the tension roller motor enters the speed-up mode or the speed-down mode, the first starting time of the tension roller motor entering the speed-up mode or the speed-down mode is determined. The system receives the actual linear velocity of the tension roller motor from the speed sensor corresponding to the tension roller motor, and determines the second starting moment when the actual linear velocity of the tension roller motor enters the target linear velocity range, wherein the target linear velocity range is the range in which the difference between the actual linear velocity of the tension roller motor and the set rotational speed is less than a set difference threshold. Determine whether the actual linear velocity of the tension roller motor can be maintained for a preset duration within the target linear velocity range; If the preset duration can be maintained, then the actual linear speed of the tension roller motor reaches a stable duration based on the first start time, the second start time, and the preset duration. If the stable duration is greater than the first duration threshold, an alarm message is output to characterize the abnormal operation of the tension roller motor.

2. The method according to claim 1, characterized in that, Before outputting an alarm message characterizing an abnormal operation of the tension roller motor if the stabilization duration exceeds a first duration, the method further includes: Obtain the identifier of the tension roller motor, and at the first starting moment, determine the speed range to which the initial linear velocity of the tension roller motor belongs; The first duration threshold is determined based on the speed range to which the initial linear velocity of the tension roller motor belongs and / or the identifier of the tension roller motor, wherein the larger the lower limit of the speed range of the initial linear velocity, the smaller the first duration threshold.

3. The method according to claim 1, characterized in that, If the stable duration exceeds a first duration threshold, an alarm message is output to characterize the abnormal operation of the tension roller motor, including: If the stable duration is greater than the second duration threshold, a first-level alarm message is output to indicate that the tension roller motor is malfunctioning and the tension roller motor is controlled to stop running. The second duration threshold is greater than the first duration threshold, and the first-level alarm message is used to indicate that the tension roller motor has a serious malfunction. If the stable duration is greater than the first duration threshold and less than the second duration threshold, a secondary alarm message is output to characterize the abnormal operation of the tension roller motor. The secondary alarm message is used to characterize the mild abnormality of the tension roller motor.

4. The method according to claim 1, characterized in that, The step of determining the stable duration for which the actual linear velocity of the tension roller motor reaches a stable value based on the first start time, the second start time, and the preset maintenance duration includes: According to the formula Determine the stabilization time for the actual linear speed of the tension roller motor to reach a stable value. , The stabilization time for the actual linear speed of the tension roller motor to reach a stable value. This is the first starting time. This is the second starting time. This is the preset duration.

5. The method according to claim 1, characterized in that, The step of determining the stable duration for which the actual linear velocity of the tension roller motor reaches a stable value based on the first start time, the second start time, and the preset maintenance duration includes: Receive the actual linear velocity of the tension roller motor collected by the speed sensor of the tension roller motor; According to the formula Determine the speed difference of the tension roller motor, wherein, The speed difference of the tension roller motor. The preset reference speed, Add a preset speed value. This refers to the actual linear velocity of the tension roller motor; When the speed difference of the tension roller motor is less than the set speed difference threshold, the stabilization time for the actual linear speed of the tension roller motor to reach a stable value is determined based on the first start time, the second start time, and the preset maintenance time.

6. The method according to any one of claims 1-5, characterized in that, The method further includes: For any one of the tension roller motors, receive the set of actual linear velocities of the tension roller motor at each moment collected by the speed sensor of the tension roller motor; Differentiate the set of actual linear velocities of the tension roller motor at each moment to obtain the actual acceleration of the tension roller motor; Determine the absolute value of the difference between the actual acceleration of the tension roller motor and the preset acceleration threshold. Determine whether the absolute value of the difference is greater than the historical extreme value of the difference; If the value is greater than the historical extreme value, a first-level alarm message is output to indicate that the tension roller motor is malfunctioning and the tension roller motor is stopped. The first-level alarm message indicates that the tension roller motor has a serious malfunction.

7. The method according to claim 6, characterized in that, Before determining whether the absolute value of the difference is greater than the historical extreme value of the difference, the method further includes: Obtain the identifier of the tension roller motor and, at the first starting moment, determine the speed range to which the initial linear velocity of the tension roller motor belongs; The historical difference extreme value is determined based on the speed range to which the initial linear velocity of the tension roller motor belongs and / or the identifier of the tension roller motor, wherein the larger the lower limit of the speed range of the initial linear velocity, the smaller the historical difference extreme value.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it causes the electronic device to perform the method as described in any one of claims 1 to 7.

9. A storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it causes the computer to perform the method as described in any one of claims 1 to 7.

10. A computer program product, comprising a computer program, characterized in that, When a computer program is run, it causes an electronic device to perform the method as claimed in any one of claims 1 to 7.

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