An online hydraulic proportional valve self-learning system and method

Abstract

The application provides an online hydraulic proportional valve self-learning system and method applied to a walking beam furnace, the walking beam furnace comprising a hydraulic proportional valve, a hydraulic cylinder and a walking beam transverse moving magnetic scale connected with the hydraulic cylinder, comprising: an opening acquisition module configured to acquire the opening of the hydraulic proportional valve at a first time and a second time; a displacement acquisition module configured to acquire the displacement of the walking beam transverse moving magnetic scale; a speed acquisition module configured to acquire the speed of the walking beam transverse moving magnetic scale at the second time; and a characteristic curve generation module configured to generate a characteristic curve of the hydraulic proportional valve, so as to solve the problem that in industrial production, the proportional valve cannot be adjusted to realize precise control of the hydraulic equipment due to the inconsistency of the characteristic curves of proportional valves of the same type from the same factory.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic proportional valve, and particularly relates to an online hydraulic proportional valve self-learning system and method. BACKGROUND

[0002] In industrial production, proportional valves are often used to control devices with high control precision. A proportional valve is a kind of hydraulic valve that converts an input electrical signal into force or displacement in proportion, thereby continuously controlling parameters such as pressure and flow.

[0003] There are many types of proportional valves on the market. In order to ensure precise control of proportional valves in industrial production, proportional valves of the same type from the same manufacturer are often used. However, in actual use, the speed of hydraulic equipment cannot be kept consistent even if the opening values of proportional valves of the same type from the same manufacturer are the same. This is because the characteristic curves of many proportional valves of the same type from the same manufacturer cannot remain consistent in actual use. The characteristic curve of a proportional valve includes a dead zone, a linear zone, and a dead zone. In the dead zone, the opening of the proportional valve increases, but the valve does not act. After passing the dead zone, the opening of the proportional valve continues to increase, and the hydraulic equipment starts to act. When the opening reaches a certain value, the speed of the hydraulic equipment reaches the maximum, which is called the linear zone. The proportional valve openings corresponding to the dead zone and the linear zone of many proportional valves of the same type from the same manufacturer are different, so precise control of hydraulic equipment cannot be achieved.

[0004] Because the characteristic curves of proportional valves of the same type from the same manufacturer cannot remain consistent, precise control of hydraulic equipment cannot be achieved when adjusting proportional valves in industrial production. SUMMARY

[0005] The embodiments of the present application provide an online hydraulic proportional valve self-learning system and method to solve the technical problem that precise control of hydraulic equipment cannot be achieved when adjusting proportional valves in industrial production because the characteristic curves of proportional valves of the same type from the same manufacturer cannot remain consistent.

[0006] The first aspect of the present application provides an online hydraulic proportional valve self-learning system applied to a walking beam furnace. The walking beam furnace includes a hydraulic proportional valve, a hydraulic cylinder, and a walking beam transverse moving magnetic scale connected to the hydraulic cylinder, and comprises:

[0007] An opening degree acquisition module in communication with the hydraulic proportional valve and configured to acquire the opening degree of the hydraulic proportional valve at a first time and a second time; the opening degree of the hydraulic proportional valve at the second time is the opening degree of the hydraulic proportional valve after the opening degree of the hydraulic proportional valve at the first time is increased by a set value, the upper limit of the opening degree of the hydraulic proportional valve at the second time is 100%, the initial value of the opening degree of the hydraulic proportional valve at the first time is 0%, and the difference between the first time and the second time is 10 ms;

[0008] A displacement acquisition module in communication with the step beam transverse displacement magnetic scale and configured to acquire the displacement of the step beam transverse displacement magnetic scale based on the positions of the step beam transverse displacement magnetic scale at the first time and the second time;

[0009] A speed acquisition module in communication with the step beam transverse displacement magnetic scale and configured to acquire the speed of the step beam transverse displacement magnetic scale at the second time based on the positions of the step beam transverse displacement magnetic scale at the first time and the second time;

[0010] A characteristic curve generation module in communication with the opening degree acquisition module, the displacement acquisition module, and the speed acquisition module and configured to generate a characteristic curve of the hydraulic proportional valve based on the opening degree of the hydraulic proportional valve at the first time and the second time, the displacement of the step beam transverse displacement magnetic scale, and the speed of the step beam transverse displacement magnetic scale at the second time.

[0011] In some embodiments, the online hydraulic proportional valve self-learning system further comprises:

[0012] A display module in communication with the characteristic curve generation module and configured to acquire the characteristic curve of the hydraulic proportional valve, generate a characteristic curve image of the hydraulic proportional valve based on the characteristic curve of the hydraulic proportional valve, and send the characteristic curve image of the hydraulic proportional valve to a display end; the display end is configured to display the characteristic curve image of the hydraulic proportional valve.

[0013] In some embodiments, the opening degree acquisition module comprises:

[0014] A first opening degree acquisition unit in communication with the step beam transverse displacement magnetic scale and configured to acquire the opening degree of the hydraulic proportional valve at a first time and a second time during the forward movement of the step beam transverse displacement magnetic scale;

[0015] A second opening degree acquisition unit in communication with the step beam transverse displacement magnetic scale and configured to acquire the opening degree of the hydraulic proportional valve at a first time and a second time during the backward movement of the step beam transverse displacement magnetic scale;

[0016] A first sending unit, in communication connection with the first opening degree acquisition unit and the second opening degree acquisition unit, configured to acquire the opening degree of the hydraulic proportional valve at the first time and the second time in the forward movement process of the step beam transverse movement magnetic scale, the opening degree of the hydraulic proportional valve at the first time and the second time in the backward movement process of the step beam transverse movement magnetic scale, and send to the characteristic curve generation module.

[0017] In some embodiments, the displacement acquisition module comprises:

[0018] A first displacement acquisition unit, in communication connection with the step beam transverse movement magnetic scale, configured to acquire the displacement in the forward movement process of the step beam transverse movement magnetic scale based on the positions of the step beam transverse movement magnetic scale at the first time and the second time;

[0019] A second displacement acquisition unit, in communication connection with the step beam transverse movement magnetic scale, configured to acquire the displacement in the backward movement process of the step beam transverse movement magnetic scale based on the positions of the step beam transverse movement magnetic scale at the first time and the second time;

[0020] A second sending unit, in communication connection with the first displacement acquisition unit and the second displacement acquisition unit, configured to acquire the displacement in the forward movement process of the step beam transverse movement magnetic scale, the displacement in the backward movement process of the step beam transverse movement magnetic scale, and send to the characteristic curve generation module.

[0021] In some embodiments, the speed acquisition module comprises:

[0022] A first speed acquisition unit, in communication connection with the step beam transverse movement magnetic scale, configured to acquire the speed of the step beam transverse movement magnetic scale at the second time in the forward movement process based on the positions of the step beam transverse movement magnetic scale at the first time and the second time;

[0023] A second speed acquisition unit, in communication connection with the step beam transverse movement magnetic scale, configured to acquire the speed of the step beam transverse movement magnetic scale at the second time in the backward movement process based on the positions of the step beam transverse movement magnetic scale at the first time and the second time;

[0024] A third sending unit, in communication connection with the first speed acquisition unit and the second speed acquisition unit, configured to acquire the speed of the step beam transverse movement magnetic scale at the second time in the forward movement process, the speed of the step beam transverse movement magnetic scale at the second time in the backward movement process, and send to the characteristic curve generation module.

[0025] In some embodiments, the online hydraulic proportional valve self-learning system further comprises:

[0026] a matching module, which is in communication connection with the characteristic curve generation module, is configured to obtain the opening of the hydraulic proportional valve corresponding to the maximum speed of the step beam transverse displacement magnetic scale in the forward process and the opening of the hydraulic proportional valve corresponding to the maximum speed of the step beam transverse displacement magnetic scale in the backward process based on the characteristic curve of the hydraulic proportional valve, and send them to the display end.

[0027] The second aspect of the present application provides an online hydraulic proportional valve self-learning method, which is applied to the online hydraulic proportional valve self-learning system of any one of the first aspect, and comprises the following steps:

[0028] obtaining the opening of the hydraulic proportional valve at a first time and a second time; the opening of the hydraulic proportional valve at the second time is the opening of the hydraulic proportional valve after a set value is added to the opening of the hydraulic proportional valve at the first time, the upper limit value of the opening of the hydraulic proportional valve at the second time is 100%, the initial value of the opening of the hydraulic proportional valve at the first time is 0%, and the difference between the first time and the second time is 10 ms;

[0029] obtaining the displacement of the step beam transverse displacement magnetic scale based on the positions of the step beam transverse displacement magnetic scale at the first time and the second time;

[0030] obtaining the speed of the step beam transverse displacement magnetic scale at the second time based on the positions of the step beam transverse displacement magnetic scale at the first time and the second time;

[0031] generating the characteristic curve of the hydraulic proportional valve based on the opening of the hydraulic proportional valve at the first time and the second time, the displacement of the step beam transverse displacement magnetic scale, and the speed of the step beam transverse displacement magnetic scale at the second time.

[0032] In some embodiments, the online hydraulic proportional valve self-learning method further comprises:

[0033] generating a characteristic curve image of the hydraulic proportional valve based on the characteristic curve of the hydraulic proportional valve and sending it to the display end; the display end is used to display the characteristic curve image of the hydraulic proportional valve.

[0034] In some embodiments, the online hydraulic proportional valve self-learning method further comprises:

[0035] obtaining the opening of the hydraulic proportional valve corresponding to the maximum speed of the step beam transverse displacement magnetic scale in the forward process and the opening of the hydraulic proportional valve corresponding to the maximum speed of the step beam transverse displacement magnetic scale in the backward process based on the characteristic curve of the hydraulic proportional valve, and sending them to the display end.

[0036] The embodiment of the present application provides an online hydraulic proportional valve self-learning system and method, which is applied to a walking beam furnace, the walking beam furnace comprising a hydraulic proportional valve, a hydraulic cylinder and a walking beam transverse moving magnetic scale connected with the hydraulic cylinder, comprising: an opening degree acquisition module, which is in communication connection with the hydraulic proportional valve, and is configured to acquire the opening degree of the hydraulic proportional valve at a first time and a second time; the opening degree of the hydraulic proportional valve at the second time is the opening degree of the hydraulic proportional valve after a set value is added to the opening degree of the hydraulic proportional valve at the first time, the upper limit value of the opening degree of the hydraulic proportional valve at the second time is 100%, the initial value of the opening degree of the hydraulic proportional valve at the first time is 0%, and the difference between the first time and the second time is 10 ms; a displacement acquisition module, which is in communication connection with the walking beam transverse moving magnetic scale, and is configured to acquire the displacement of the walking beam transverse moving magnetic scale based on the positions of the walking beam transverse moving magnetic scale at the first time and the second time; a speed acquisition module, which is in communication connection with the walking beam transverse moving magnetic scale, and is configured to acquire the speed of the walking beam transverse moving magnetic scale at the second time based on the positions of the walking beam transverse moving magnetic scale at the first time and the second time; and a characteristic curve generation module, which is configured to generate a characteristic curve of the hydraulic proportional valve based on the opening degree of the hydraulic proportional valve at the first time and the second time, the displacement of the walking beam transverse moving magnetic scale and the speed of the walking beam transverse moving magnetic scale at the second time, so as to solve the problem that the proportional valves of the same type and from the same factory cannot keep consistency in characteristic curves, so that accurate control of hydraulic equipment cannot be achieved when the proportional valve is adjusted in industrial production. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0038] Figure 1 FIG. 1 is a structural schematic diagram of an online hydraulic proportional valve self-learning system in the present application;

[0039] Figure 2 FIG. 3 is a structural schematic diagram of an opening degree acquisition module in the present application;

[0040] Figure 3 FIG. 5 is a structural schematic diagram of a displacement acquisition module in the present application;

[0041] Figure 4 FIG. 7 is a structural schematic diagram of a speed acquisition module in the present application;

[0042] Figure 5Fig. 1 is a schematic diagram of the characteristic curve of the hydraulic proportional valve in the present application;

[0043] Figure 6 Fig. 2 is a schematic diagram of the relationship between the opening and the flow of the proportional valve of the same type in the present application;

[0044] Figure 7 Fig. 3 is a flow chart of the self-learning program of the hydraulic proportional valve in the present application.

[0045] Explanation of reference signs:

[0046] 1-opening acquisition module; 11-first opening acquisition unit; 12-second opening acquisition unit; 13-first sending unit; 2-displacement acquisition module; 21-first displacement acquisition unit; 22-second displacement acquisition unit; 23-second sending unit; 3-speed acquisition module; 31-first speed acquisition unit; 32-second speed acquisition unit; 33-third sending unit; 4-characteristic curve generation module; 5-display module; 6-matching module. DETAILED DESCRIPTION

[0047] In order to make the person in the art better understand the technical solutions in the present application, the technical solutions in the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by the person in the art without creative labor should belong to the scope of protection of the present application.

[0048] Because in some technologies, the characteristic curve of the proportional valve of the same type cannot be consistent, so that the precise control of the hydraulic equipment cannot be realized when the proportional valve is adjusted in industrial production. In order to solve the technical problem, the present application provides an online hydraulic proportional valve self-learning system and method, which will be described below:

[0049] By Figure 1It can be known that the application provides an online hydraulic proportional valve self-learning system applied to a walking beam furnace, the walking beam furnace comprising a hydraulic proportional valve, a hydraulic cylinder and a walking beam transverse moving magnetic scale connected with the hydraulic cylinder, the walking beam transverse moving magnetic scale being connected with the hydraulic cylinder, so that the moving speed and the motion state of the hydraulic cylinder can be accurately measured, and the forward process or the backward process, comprising an opening degree acquisition module 1, the opening degree acquisition module 1 being in communication connection with the hydraulic proportional valve and being configured to acquire the opening degree of the hydraulic proportional valve at a first time and a second time; the opening degree of the hydraulic proportional valve at the second time being the opening degree of the hydraulic proportional valve after the opening degree of the hydraulic proportional valve at the first time is increased by a set value, it can be understood that the first time is to start self-learning of the hydraulic proportional valve from the opening degree of the hydraulic proportional valve being 0%, and the opening degree of the hydraulic proportional valve is increased by 0.2% every 10ms according to the self-learning graduation value, so that the opening degree of the hydraulic proportional valve at the second time is 0.2%, and the displacement of the walking beam transverse moving magnetic scale and the speed of the walking beam transverse moving magnetic scale at the second time are recorded, after the recording, the increase of 0.2% is continued until the opening degree of the hydraulic proportional valve corresponding to the second time is 100%, the self-learning of the hydraulic proportional valve is completed, and the characteristic curve of the hydraulic proportional valve is generated; the upper limit value of the opening degree of the hydraulic proportional valve at the second time is 100%, the initial value of the opening degree of the hydraulic proportional valve at the first time is 0%, and the difference between the first time and the second time is 10ms; in order to improve the self-learning accuracy of the hydraulic proportional valve, the application adopts a 10ms scanning period, and the program flow chart is as follows Figure 7The first time is the initial value of the opening degree of the hydraulic proportional valve, which is set to 0%. The incremental value is the incremental value of the proportional valve output per scanning period, i.e. the opening degree of the proportional valve is increased by 0.2% every 10ms according to the incremental value; the maximum output value of the proportional valve is the maximum opening output value of the proportional valve, which is 100%; the displacement acquisition module 2 is in communication connection with the step beam transverse displacement magnetic scale and is configured to acquire the displacement of the step beam transverse displacement magnetic scale based on the positions of the step beam transverse displacement magnetic scale at the first time and the second time; the speed acquisition module 3 is in communication connection with the step beam transverse displacement magnetic scale and is configured to acquire the speed of the step beam transverse displacement magnetic scale at the second time based on the positions of the step beam transverse displacement magnetic scale at the first time and the second time; the opening degree of the hydraulic proportional valve is increased by 0.2% every 10ms according to the incremental value, and the speed acquisition module 3 acquires the difference between the positions of the step beam transverse displacement magnetic scale at the first time and the second time, i.e. the speed of the step beam transverse displacement magnetic scale at the second time; the calculation formula is V=(Sn-Sn-1) / t; in the formula, Sn is the distance moved by the step beam transverse displacement magnetic scale within the first time; Sn-1 is the distance moved by the step beam transverse displacement magnetic scale within the second time, and t is the fixed scanning period, i.e. the difference between the second time and the first time; the characteristic curve generation module 4 is in communication connection with the opening degree acquisition module 1, the displacement acquisition module 2 and the speed acquisition module 3 and is configured to generate the characteristic curve of the hydraulic proportional valve based on the opening degree of the hydraulic proportional valve, the displacement of the step beam transverse displacement magnetic scale and the speed of the step beam transverse displacement magnetic scale at the second time at the first time and the second time; after one cycle of device action, the hydraulic proportional valve opening degree, the step beam magnetic scale displacement value and the corresponding hydraulic cylinder movement speed comparison diagram as shown in Figure 5 can be obtained. Through analysis, it can be seen that the proportional valve opening degree corresponding to the dead zone and the proportional valve opening degree corresponding to the maximum device speed, i.e. the characteristic curve of the hydraulic proportional valve.

[0050] From Figure 1 It can be known that the online hydraulic proportional valve self-learning system further comprises a display module 5 in communication connection with the characteristic curve generation module 4 and configured to acquire the characteristic curve of the hydraulic proportional valve and generate a characteristic curve image of the hydraulic proportional valve based on the characteristic curve of the hydraulic proportional valve and send the characteristic curve image of the hydraulic proportional valve to a display end; the display end is used to display the characteristic curve image of the hydraulic proportional valve, and the working personnel can check the characteristic curve image of the hydraulic proportional valve through the display end, so as to realize precise control of the hydraulic equipment through the characteristic curve image of the hydraulic proportional valve, such asFigure 5 The characteristic curve image of the hydraulic proportional valve can obtain that the hydraulic cylinder starts to advance at -40% opening of the hydraulic proportional valve in the advancing process, and reaches the maximum advancing speed at -80% opening of the proportional valve. In the retreating process, the hydraulic cylinder starts to retreat at 10% opening of the hydraulic proportional valve, and reaches the maximum retreating speed at 50% opening of the proportional valve. The characteristic curve image of the hydraulic proportional valve can realize accurate control of the hydraulic equipment by adjusting the opening of the hydraulic proportional valve. Figure 6 It can be known that even the characteristic curves of proportional valves of the same type and from the same factory cannot keep consistency, that is, the openings of the hydraulic proportional valves are consistent, but the flow rates through the proportional valves are different. Therefore, the online hydraulic proportional valve self-learning system provided in the application can obtain the characteristic curves of each hydraulic valve during operation, so as to accurately control the hydraulic equipment through the characteristic curves, and avoid the influence of different brands, different types, different states of the hydraulic station and other factors on actual application.

[0051] It can be known that the opening acquisition module 1 comprises a first opening acquisition unit 11, a second opening acquisition unit 12 and a first sending unit 13. Figure 2 It can be known that the opening acquisition module 1 comprises a first opening acquisition unit 11, a second opening acquisition unit 12 and a first sending unit 13. Figure 5 As shown in FIG. 4, because the hydraulic proportional valve has different hydraulic valve openings corresponding to the maximum speed of the hydraulic equipment in the advancing process and the retreating process, the hydraulic cylinder is measured in the advancing process and the retreating process respectively to accurately control the operation of the hydraulic equipment, so that the complete characteristic curve of the hydraulic valve can be obtained, and accurate control of the hydraulic equipment can be realized.

[0052] It can be known that the opening acquisition module 1 comprises a first opening acquisition unit 11, a second opening acquisition unit 12 and a first sending unit 13. Figure 3It can be known that the displacement acquisition module 2 comprises: a first displacement acquisition unit 21, which is in communication connection with the step beam transverse movement magnetic scale and is configured to acquire the displacement of the step beam transverse movement magnetic scale in the advancing process based on the positions of the step beam transverse movement magnetic scale at the first time and the second time; a second displacement acquisition unit 22, which is in communication connection with the step beam transverse movement magnetic scale and is configured to acquire the displacement of the step beam transverse movement magnetic scale in the retreating process based on the positions of the step beam transverse movement magnetic scale at the first time and the second time; and a second sending unit 23, which is in communication connection with the first displacement acquisition unit 21 and the second displacement acquisition unit 22 and is configured to acquire the displacement of the step beam transverse movement magnetic scale in the advancing process and the displacement of the step beam transverse movement magnetic scale in the retreating process and send them to the characteristic curve generation module 4.

[0053] By Figure 4 It can be known that the speed acquisition module 3 comprises: a first speed acquisition unit 31, which is in communication connection with the step beam transverse movement magnetic scale and is configured to acquire the speed of the step beam transverse movement magnetic scale at the second time in the advancing process based on the positions of the step beam transverse movement magnetic scale at the first time and the second time; a second speed acquisition unit 32, which is in communication connection with the step beam transverse movement magnetic scale and is configured to acquire the speed of the step beam transverse movement magnetic scale at the second time in the retreating process based on the positions of the step beam transverse movement magnetic scale at the first time and the second time; and a third sending unit 33, which is in communication connection with the first speed acquisition unit 31 and the second speed acquisition unit 32 and is configured to acquire the speed of the step beam transverse movement magnetic scale at the second time in the advancing process and the speed of the step beam transverse movement magnetic scale at the second time in the retreating process and send them to the characteristic curve generation module 4.

[0054] By Figure 1It can be known that the online hydraulic proportional valve self-learning system further comprises a matching module 6, which is in communication connection with the characteristic curve generation module 4 and is configured to obtain the opening of the hydraulic proportional valve corresponding to the maximum speed of the step beam transverse displacement magnetic scale in the forward process and the opening of the hydraulic proportional valve corresponding to the maximum speed of the step beam transverse displacement magnetic scale in the backward process based on the characteristic curve of the hydraulic proportional valve, and send them to the display end. It can be understood that in order to increase the work efficiency of the staff, they can quickly obtain the opening of the hydraulic proportional valve corresponding to the maximum speed of the hydraulic equipment running through the characteristic curve of the hydraulic proportional valve. The application sets the matching module 6, so that when the characteristic curve generation module 4 generates the characteristic curve of the hydraulic proportional valve, the opening of the hydraulic proportional valve corresponding to the maximum speed of the hydraulic equipment running is automatically generated and displayed on the display end, so that the hydraulic equipment can be controlled to run at the maximum running speed in the first time, and the work efficiency is improved.

[0055] The second aspect of the application provides an online hydraulic proportional valve self-learning method applied to the online hydraulic proportional valve self-learning system in any of the above embodiments, which comprises: obtaining the opening of the hydraulic proportional valve at a first time and a second time; the opening of the hydraulic proportional valve at the second time is the opening of the hydraulic proportional valve after increasing the opening of the hydraulic proportional valve at the first time by a set value, the upper limit value of the opening of the hydraulic proportional valve at the second time is 100%, the initial value of the opening of the hydraulic proportional valve at the first time is 0%, and the difference between the first time and the second time is 10 ms; obtaining the displacement of the step beam transverse displacement magnetic scale based on the positions of the step beam transverse displacement magnetic scale at the first time and the second time; obtaining the speed of the step beam transverse displacement magnetic scale at the second time based on the positions of the step beam transverse displacement magnetic scale at the first time and the second time; and generating the characteristic curve of the hydraulic proportional valve based on the opening of the hydraulic proportional valve at the first time and the second time, the displacement of the step beam transverse displacement magnetic scale, and the speed of the step beam transverse displacement magnetic scale at the second time. The effects of each part of the above method when executed in the above system can be referred to the system embodiments, which will not be repeated here.

[0056] In this embodiment, the online hydraulic proportional valve self-learning method further comprises: generating a characteristic curve image of the hydraulic proportional valve based on the characteristic curve of the hydraulic proportional valve and sending it to the display end; and the display end is used for displaying the characteristic curve image of the hydraulic proportional valve. The effects of each part of the above method when executed in the above system can be referred to the system embodiments, which will not be repeated here.

[0057] In the embodiment, the online hydraulic proportional valve self-learning method further includes: obtaining, based on the characteristic curve of the hydraulic proportional valve, the opening of the hydraulic proportional valve corresponding to the maximum speed of the step beam transverse moving magnetic scale in the advancing process and the opening of the hydraulic proportional valve corresponding to the maximum speed of the step beam transverse moving magnetic scale in the retreating process, and sending to the display end. The effects of the above method when executed in the above system are described above, and will not be repeated here.

[0058] The above detailed description is further detailed for the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above is only a specific implementation of the embodiments of the present application, and is not used to limit the protection scope of the embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made on the basis of the technical solutions of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. An online hydraulic proportional valve self-learning system applied to a walking beam furnace, the walking beam furnace comprising: The hydraulic proportional valve, the hydraulic cylinder and the step beam transverse moving magnetic scale connected with the hydraulic cylinder, characterized in that comprising: An opening degree acquisition module (1) is in communication connection with the hydraulic proportional valve and is configured to acquire the opening degree of the hydraulic proportional valve at a first time and a second time; the opening degree of the hydraulic proportional valve at the second time is the opening degree of the hydraulic proportional valve after a set value is added based on the opening degree of the hydraulic proportional valve at the first time, the upper limit value of the opening degree of the hydraulic proportional valve at the second time is 100%, the initial value of the opening degree of the hydraulic proportional valve at the first time is 0%, and the difference between the first time and the second time is 10 ms; the set value is 0.2%; A displacement acquisition module (2) is in communication connection with the step beam transverse moving magnetic scale and is configured to acquire the displacement of the step beam transverse moving magnetic scale based on the positions of the step beam transverse moving magnetic scale at the first time and the second time; A speed acquisition module (3) is in communication connection with the step beam transverse moving magnetic scale and is configured to acquire the speed of the step beam transverse moving magnetic scale at the second time based on the positions of the step beam transverse moving magnetic scale at the first time and the second time; A characteristic curve generation module (4) is in communication connection with the opening degree acquisition module (1), the displacement acquisition module (2) and the speed acquisition module (3) and is configured to generate the characteristic curve of the hydraulic proportional valve based on the opening degree of the hydraulic proportional valve at the first time and the second time, the displacement of the step beam transverse moving magnetic scale and the speed of the step beam transverse moving magnetic scale at the second time.

2. The online hydraulic proportional valve self-learning system according to claim 1, characterized in that, Further comprising: A display module (5) is in communication connection with the characteristic curve generation module (4) and is configured to acquire the characteristic curve of the hydraulic proportional valve and generate a characteristic curve image of the hydraulic proportional valve based on the characteristic curve of the hydraulic proportional valve and send the characteristic curve image to a display end; the display end is used to display the characteristic curve image of the hydraulic proportional valve.

3. The online hydraulic proportional valve self-learning system according to claim 1, characterized in that, The opening degree acquisition module (1) comprises: A first opening degree acquisition unit (11) is in communication connection with the step beam transverse moving magnetic scale and is configured to acquire the opening degree of the hydraulic proportional valve at the first time and the second time in the forward movement process of the step beam transverse moving magnetic scale; A second opening degree acquisition unit (12) is in communication connection with the step beam transverse moving magnetic scale and is configured to acquire the opening degree of the hydraulic proportional valve at the first time and the second time in the backward movement process of the step beam transverse moving magnetic scale; A first sending unit (13) is in communication connection with the first opening degree acquisition unit (11) and the second opening degree acquisition unit (12) and is configured to acquire the opening degree of the hydraulic proportional valve at the first time and the second time in the forward movement process of the step beam transverse moving magnetic scale and the opening degree of the hydraulic proportional valve at the first time and the second time in the backward movement process of the step beam transverse moving magnetic scale and send them to the characteristic curve generation module (4).

4. The online hydraulic proportional valve self-learning system according to claim 1, characterized in that, The displacement acquisition module (2) comprises: A first displacement acquisition unit (21) in communication connection with the step beam transverse movement magnetic scale, configured to acquire the displacement of the step beam transverse movement magnetic scale during the advancing process based on the positions of the step beam transverse movement magnetic scale at the first time and the second time; A second displacement acquisition unit (22) in communication connection with the step beam transverse movement magnetic scale, configured to acquire the displacement of the step beam transverse movement magnetic scale during the retreating process based on the positions of the step beam transverse movement magnetic scale at the first time and the second time; A second sending unit (23) in communication connection with the first displacement acquisition unit (21) and the second displacement acquisition unit (22), configured to acquire the displacement of the step beam transverse movement magnetic scale during the advancing process and the displacement of the step beam transverse movement magnetic scale during the retreating process and send them to the characteristic curve generation module (4).

5. The online hydraulic proportional valve self-learning system according to claim 1, wherein, The speed acquisition module (3) comprises: A first speed acquisition unit (31) in communication connection with the step beam transverse movement magnetic scale, configured to acquire the speed of the step beam transverse movement magnetic scale at the second time during the advancing process based on the positions of the step beam transverse movement magnetic scale at the first time and the second time; the speed at the second time is V=(Sn-Sn-1) / t; In the formula, Sn is the distance moved by the step beam transverse movement magnetic scale within the first time; Sn-1 is the distance moved by the step beam transverse movement magnetic scale within the second time, and t is the difference between the second time and the first time; A second speed acquisition unit (32) in communication connection with the step beam transverse movement magnetic scale, configured to acquire the speed of the step beam transverse movement magnetic scale at the second time during the retreating process based on the positions of the step beam transverse movement magnetic scale at the first time and the second time; A third sending unit (33) in communication connection with the first speed acquisition unit (31) and the second speed acquisition unit (32), configured to acquire the speed of the step beam transverse movement magnetic scale at the second time during the advancing process and the speed of the step beam transverse movement magnetic scale at the second time during the retreating process and send them to the characteristic curve generation module (4).

6. The online hydraulic proportional valve self-learning system according to claim 2, wherein, Further comprising: A matching module (6) in communication connection with the characteristic curve generation module (4), configured to acquire the opening of the hydraulic proportional valve corresponding to the maximum speed of the step beam transverse movement magnetic scale during the advancing process and the opening of the hydraulic proportional valve corresponding to the maximum speed of the step beam transverse movement magnetic scale during the retreating process based on the characteristic curve of the hydraulic proportional valve and send them to the display end.

7. An online hydraulic proportional valve self-learning method applied to the online hydraulic proportional valve self-learning system of any one of claims 1 to 6, characterized in that, Comprise: Acquire the opening of the hydraulic proportional valve at the first time and the second time; The opening degree of the hydraulic proportional valve at the second time is the opening degree of the hydraulic proportional valve after a set value is added to the opening degree of the hydraulic proportional valve at the first time, the upper limit of the opening degree of the hydraulic proportional valve at the second time is 100%, the initial value of the opening degree of the hydraulic proportional valve at the first time is 0%, and the difference between the first time and the second time is 10 ms; the set value is 0.2%; Based on the positions of the step beam transverse magnetic scale at the first time and the second time, the displacement of the step beam transverse magnetic scale is obtained; Based on the positions of the step beam transverse magnetic scale at the first time and the second time, the speed of the step beam transverse magnetic scale at the second time is obtained; the speed at the second time is V=(Sn-Sn-1) / t; In the formula, Sn is the distance moved by the step beam transverse magnetic scale within the first time; Sn-1 is the distance moved by the step beam transverse magnetic scale within the second time, and t is the difference between the second time and the first time; Based on the opening degree of the hydraulic proportional valve at the first time and the second time, the displacement of the step beam transverse magnetic scale, and the speed of the step beam transverse magnetic scale at the second time, a characteristic curve of the hydraulic proportional valve is generated.

8. The online hydraulic proportional valve self-learning method according to claim 7, characterized in that, Also includes: According to the characteristic curve of the hydraulic proportional valve, a characteristic curve image of the hydraulic proportional valve is generated and sent to a display end; The display end is used to display the characteristic curve image of the hydraulic proportional valve.

9. The online hydraulic proportional valve self-learning method according to claim 8, characterized in that, Also includes: Based on the characteristic curve of the hydraulic proportional valve, the opening degree of the hydraulic proportional valve corresponding to the maximum speed of the step beam transverse magnetic scale in the forward process and the opening degree of the hydraulic proportional valve corresponding to the maximum speed of the step beam transverse magnetic scale in the backward process are obtained and sent to the display end.

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