A method and apparatus for dynamic heating control of recycled asphalt mortar based on torque feedback

Abstract

This invention discloses a dynamic heating control method and apparatus for recycled asphalt mortar based on torque feedback. The method includes: determining a predicted torque change curve within a preset time period based on the current heating power; determining a first heating power adjustment strategy for the heating device within the preset time period based on the predicted torque change curve and a preset first power generation strategy; performing first control on the heating device according to the first heating power adjustment strategy, and continuously acquiring the real-time torque value of the recycled asphalt mortar at each moment during the first control process; determining a first torque change rate between each real-time torque value; and correcting the first heating power adjustment strategy using a preset correction strategy based on each first torque change rate to obtain a second heating power adjustment strategy. By monitoring the torque of the recycled asphalt mortar in real time and dynamically adjusting the heating strategy, relatively accurate and efficient control of the heating process of the recycled asphalt mortar is achieved.

Description

Technical Field

[0001] This invention belongs to the field of heating control technology for recycled asphalt mortar, and particularly relates to a dynamic heating control method and device for recycled asphalt mortar based on torque feedback. Background Technology

[0002] Recycled asphalt mortar, as an important basic building material, is widely used in road engineering, waterproofing, and roofing construction. During its use, it typically needs to be heated to a specific temperature to reduce torque and achieve suitable workability. Excessive torque can lead to problems such as difficulty in pumping recycled asphalt mortar, uneven mixing, and poor adhesion to aggregates; while insufficient torque may cause accelerated aging of the recycled asphalt mortar, increased energy consumption, and even safety hazards. Therefore, precise control of torque during the heating process of recycled asphalt mortar is a crucial step in ensuring construction quality and efficiency.

[0003] Currently, the industry commonly uses temperature-based control methods to control the heating process of recycled asphalt mortar. This method relies on the correlation between the temperature and torque of the recycled asphalt mortar. By setting a target temperature and using temperature sensor feedback to control the power output of the heating device, the aim is to maintain the recycled asphalt mortar at the preset temperature, thereby indirectly controlling its torque. However, this method has inherent limitations. First, due to the influence of various factors such as the source of the asphalt, its formulation, aging degree, and heating history, a fixed temperature setpoint is difficult to accurately correspond to the required construction torque. Second, this method is an open-loop indirect control and cannot directly respond to the final target parameter of torque. In actual production, due to disturbances such as differences in the performance of heating equipment, uneven temperature distribution inside the tank, and changes in ambient temperature, the actual torque often deviates significantly from the expected value, resulting in problems such as control lag, overshoot (overheating), or insufficient response. Overshoot accelerates asphalt aging, affecting its performance and producing harmful gases; while insufficient response prolongs the production cycle and causes energy waste. Summary of the Invention

[0004] This invention provides a dynamic heating control method and device for recycled asphalt mortar based on torque feedback, which solves the technical problem that existing heating control methods for recycled asphalt mortar often result in a significant deviation between the actual torque and the expected value.

[0005] In a first aspect, the present invention provides a dynamic heating control method for recycled asphalt mortar based on torque feedback, comprising:

[0006] Obtain the current torque value of the recycled asphalt mortar in the recycled asphalt mortar container at the current moment, and the current heating power corresponding to the current torque value, wherein the current heating power is the heating power executed by the heating device at the current moment;

[0007] Determine whether the absolute value of the difference between the current torque value and the preset target torque value is greater than a first preset threshold.

[0008] If the current heating power is greater than the first preset threshold, then based on the current heating power, a predicted torque change curve for a future preset time period is determined, and based on the predicted torque change curve, a first heating power adjustment strategy for the heating device for the future preset time period is determined based on a preset first power generation strategy, wherein the first heating power adjustment strategy includes a first heating power value and a first maintenance time.

[0009] The heating device is controlled according to the first heating power adjustment strategy, and the real-time torque value of the recycled asphalt mortar at each moment is continuously acquired during the first control process.

[0010] A first torque change rate is determined between each real-time torque value. Based on each first torque change rate, a preset correction strategy is used to correct the first heating power adjustment strategy to obtain a second heating power adjustment strategy. The second heating power adjustment strategy includes a second heating power value and a second holding time, and the second heating power value is less than the first heating power value.

[0011] The heating device is controlled in a second manner according to the second heating power adjustment strategy until the absolute value of the difference between the real-time torque value and the target torque value is not greater than the first preset threshold.

[0012] Secondly, the present invention provides a dynamic heating control device for recycled asphalt mortar based on torque feedback, comprising:

[0013] The acquisition module is configured to acquire the current torque value of the recycled asphalt mortar in the recycled asphalt mortar container at the current moment, and the current heating power corresponding to the current torque value, wherein the current heating power is the heating power executed by the heating device at the current moment;

[0014] The judgment module is configured to determine whether the absolute value of the difference between the current torque value and the preset target torque value is greater than a first preset threshold.

[0015] The generation module is configured to, if the current heating power is greater than a first preset threshold, determine the predicted torque change curve within a future preset time period based on the current heating power, and determine the first heating power adjustment strategy of the heating device within the future preset time period based on the predicted torque change curve and a preset first power generation strategy, wherein the first heating power adjustment strategy includes a first heating power value and a first maintenance time.

[0016] The first control module is configured to perform first control on the heating device according to the first heating power adjustment strategy, and continuously acquire the real-time torque value of the recycled asphalt mortar at each moment during the first control process.

[0017] The correction module is configured to determine a first torque change rate between each real-time torque value, and to correct the first heating power adjustment strategy according to each first torque change rate by adopting a preset correction strategy to obtain a second heating power adjustment strategy. The second heating power adjustment strategy includes a second heating power value and a second holding time, and the second heating power value is less than the first heating power value.

[0018] The second control module is configured to perform second control on the heating device according to the second heating power adjustment strategy until the absolute value of the difference between the real-time torque value and the target torque value is not greater than the first preset threshold.

[0019] Thirdly, an electronic device is provided, comprising: at least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the steps of the torque feedback-based dynamic heating control method for recycled asphalt mortar according to any embodiment of the present invention.

[0020] Fourthly, the present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein when the program instructions are executed by a processor, the processor performs the steps of the dynamic heating control method for recycled asphalt mortar based on torque feedback according to any embodiment of the present invention.

[0021] This application discloses a dynamic heating control method and apparatus for recycled asphalt mortar based on torque feedback. By monitoring the torque of the recycled asphalt mortar in real time and dynamically adjusting the heating strategy, it achieves relatively accurate and efficient control of the heating process. The method first directly acquires the current torque value through an online torque meter. When a large deviation between the current torque and the target torque is detected, a first heating power adjustment strategy for the heating device within a preset future time period is determined based on a pre-set first power generation strategy. This minimizes the overshoot phenomenon caused by excessive response in traditional control. Furthermore, it integrates predicted torque based on historical torque extrapolation and predicted torque based on the temperature-torque mapping relationship, generating a more reliable prediction curve through weighted averaging, thus improving the robustness and accuracy of predictions under complex working conditions. In addition, the method introduces a pre-set correction strategy to modify the first heating power adjustment strategy, resulting in a second heating power adjustment strategy. By continuously monitoring the torque change rate, the heating power and holding time are dynamically reduced, minimizing the adjustment time for recycled asphalt mortar heating while improving the stability of the recycled asphalt mortar product quality. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A flowchart illustrating a dynamic heating control method for recycled asphalt mortar based on torque feedback, provided as an embodiment of the present invention;

[0024] Figure 2 This is a structural block diagram of a dynamic heating control device for recycled asphalt mortar based on torque feedback, provided in an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1The diagram shows a flowchart of a dynamic heating control method for recycled asphalt mortar based on torque feedback, as described in this application.

[0028] like Figure 1 As shown, the dynamic heating control method for recycled asphalt mortar based on torque feedback specifically includes the following steps:

[0029] Step S101: Obtain the current torque value of the recycled asphalt mortar in the recycled asphalt mortar container at the current moment, and the current heating power corresponding to the current torque value, wherein the current heating power is the heating power executed by the heating device at the current moment.

[0030] In this step, an online torque meter is used to measure the torque inside the recycled asphalt mortar container in real time, obtaining the current torque value at the current moment. Given the high torque and high temperature characteristics of recycled asphalt mortar during heating, a rotary torque meter or a vibratory torque meter is preferred. Its sensor (probe) can be directly inserted into the recycled asphalt mortar container and can withstand the high temperature (typically >150°C) and corrosiveness of the recycled asphalt mortar.

[0031] It should be noted that the power of heating devices (such as electric heating elements) is usually controlled by solid-state relays (SSRs) or power regulators. The control system controls the average power by changing the duty cycle of the pulse width modulation (PWM) signal or adjusting the phase angle.

[0032] The rated power of the heating device is known within the control system. By obtaining the current output power command (such as the PWM duty cycle D_current, with a value range of 0-100%), the current heating power can be directly obtained. Heating power = PWM duty cycle. Rated power.

[0033] Step S102: Determine whether the absolute value of the difference between the current torque value and the preset target torque value is greater than a first preset threshold.

[0034] In one specific embodiment, after determining whether the absolute value of the difference between the current torque value and the preset target torque value is greater than a first preset threshold, if it is not greater than the first preset threshold, the historical torque values ​​at each historical moment are directly obtained, and a second torque change rate between each historical torque value and the current torque value is determined, wherein the historical heating power corresponding to each historical moment is the same as the current heating power.

[0035] In this implementation, when the absolute value of the difference between the current torque value and the preset target torque value is not greater than the first preset threshold, it indicates that the current torque value is approaching the target torque value. Increasing the current heating power at this point may lead to overheating, while decreasing it may prolong the time required to reach the target torque value. Therefore, maintaining the current heating power and determining the third holding time required to reach the target torque value is a better adjustment strategy.

[0036] Based on each of the second torque change rates, a third heating power adjustment strategy for the heating device is determined within the future preset time period based on a preset second power generation strategy.

[0037] In this embodiment, a certain second torque change rate is the ratio between a certain historical torque difference and a certain historical time difference. The certain historical torque difference is the difference between a certain historical torque value and the current torque value, and the certain historical time difference is the difference between the acquisition time corresponding to the certain historical torque value and the current time.

[0038] Among the various second torque change rates, the second torque change rate with the largest value is selected and defined as the target second torque change rate. The ratio between the target torque difference and the target second torque change rate is calculated to obtain the third holding time. The target torque difference is the absolute value of the difference between the target torque value and the current torque value. Based on the third holding time and the current heating power, the third heating power adjustment strategy of the heating device in the future preset time period is determined.

[0039] It should be noted that choosing the second torque change rate with the largest value means that the most conservative (safest) estimate is being used. It assumes that the torque will change at the fastest rate historically, resulting in a shorter calculation time and avoiding overheating (overshoot) due to overly optimistic predictions, which could cause the torque value to exceed the target torque value.

[0040] In one specific embodiment, it is assumed that the target torque is 60 N·cm, the current torque is 55 N·cm, the current heating power is 5.0 kW, and the current time is 10:30:00.

[0041] The most recent data recorded at 5.0kW power were selected from the historical database: the first historical torque value was 70N·cm (the first historical time was 10:28:30), the second historical torque value was 65N·cm (the second historical time was 10:29:00), and the third historical torque value was 60N·cm (the first historical time was 10:29:30).

[0042] Calculate the various second torque change rates to obtain the second torque change rate a = (70-55) / 90 ≈ 0.167 N·cm / second, the second torque change rate b = (65-55) / 60 ≈ 0.167 N·cm / second, and the second torque change rate c = (60-55) / 30 ≈ 0.167 N·cm / second.

[0043] The ratio between the target torque difference (|50 mPa·s - 55 mPa·s|) and the target second torque change rate (0.167 mPa·s / second) is calculated to obtain the third holding time, i.e., 5 / 0.167≈30 seconds.

[0044] The final third heating power adjustment strategy is to maintain a heating power of 5.0kW for the next 30 seconds.

[0045] The heating device is controlled according to the third heating power adjustment strategy until the absolute value of the difference between the real-time torque value and the target torque value is not greater than the second preset threshold, wherein the second preset threshold is less than the first preset threshold.

[0046] Step S103: If the current heating power is greater than the first preset threshold, then the predicted torque change curve within a future preset time period is determined based on the current heating power, and the first heating power adjustment strategy of the heating device within the future preset time period is determined based on the predicted torque change curve and the preset first power generation strategy, wherein the first heating power adjustment strategy includes a first heating power value and a first maintenance time.

[0047] In this step, historical torque values ​​at various historical moments are obtained and sorted according to chronological order to obtain a historical torque value sequence. The historical heating power corresponding to each historical moment is the same as the current heating power. A first torque difference is calculated between the first historical torque value in the historical torque value sequence and the current torque value. Based on the sequence position of each historical torque value, other historical torque values ​​are sequentially added to the first torque difference to obtain at least one first predicted torque. The other historical torque values ​​are any historical torque values ​​in the historical torque value sequence excluding the first historical torque value. The at least one first predicted torque is corrected based on at least one historical temperature value to obtain at least one target predicted torque. The at least one target predicted torque and the prediction time corresponding to the at least one target predicted torque are input into a pre-constructed two-dimensional coordinate system to obtain at least one coordinate point. The at least one coordinate point is then fitted to obtain a predicted torque change curve within a preset future time period. The horizontal axis of the two-dimensional coordinate system represents the prediction time, and the vertical axis represents the target predicted torque.

[0048] It should be noted that, based on at least one historical temperature value, at least one first predicted torque is corrected to obtain at least one target predicted torque, including:

[0049] The historical temperature values ​​at each historical moment are obtained, and the historical temperature values ​​are sorted according to the chronological order to obtain the historical temperature sequence.

[0050] Calculate the first temperature difference between the historical temperature value in the historical temperature sequence and the current temperature value corresponding to the current moment. Then, according to the sequence position of each historical temperature value, add the other historical temperature values ​​to the first temperature difference in turn to obtain at least one predicted temperature. The other historical torque values ​​are any historical torque values ​​in the historical torque value sequence after removing the first historical torque value.

[0051] Based on a pre-established temperature-torque mapping table, a second predicted torque corresponding to at least one predicted temperature is obtained. The process of establishing the temperature-torque mapping table is as follows: under the current heating power, the experimental torque values ​​of recycled asphalt mortar at different experimental temperatures are obtained; based on the correspondence between experimental temperature values ​​and experimental torque values, the temperature-torque function is obtained by fitting using the least squares method; the temperature-torque function is then discretized into a temperature-torque mapping.

[0052] The average of a first predicted torque and a second predicted torque corresponding to a certain prediction time is used to obtain a target predicted torque, that is, at least one target predicted torque is obtained.

[0053] In this embodiment, the first predicted torque derived from historical torque and the second predicted torque derived from historical temperature are averaged to obtain the final target predicted torque. This can significantly improve the accuracy and robustness of predicting future torque change trends, thereby providing a reliable data foundation for formulating an aggressive but not excessive heating strategy. It also minimizes the problems of control overshoot (overheating) or slow response (underheating) caused by inaccurate prediction of a single path.

[0054] Step S104: Perform first control on the heating device according to the first heating power adjustment strategy, and continuously acquire the real-time torque value of the recycled asphalt mortar at each moment during the first control process.

[0055] In this step, a target torque value is selected on the predicted torque change curve, and a target time corresponding to the target torque value is determined according to a preset two-dimensional coordinate system. The time difference between the target time and the current time is calculated to obtain the current holding time. The first heating power ratio is multiplied by the current holding time to obtain the first holding time. Thus, the first heating power adjustment strategy containing the first heating power value and the first holding time is obtained, where the first heating power ratio is the ratio of the current heating power to the first heating power value.

[0056] Step S105: Determine the first torque change rate between each real-time torque value; based on each first torque change rate, use a preset correction strategy to correct the first heating power adjustment strategy to obtain a second heating power adjustment strategy. The second heating power adjustment strategy includes a second heating power value and a second holding time, and the second heating power value is less than the first heating power value.

[0057] Step S106: Perform second control on the heating device according to the second heating power adjustment strategy until the absolute value of the difference between the real-time torque value and the target torque value is not greater than the first preset threshold.

[0058] In this step, the real-time torque change rate between the first real-time torque value and the second real-time torque value is obtained, and it is determined whether the real-time torque change rate is greater than a preset change rate threshold. The first real-time torque value and the second real-time torque value are two adjacent real-time torque values, and the second acquisition time corresponding to the second real-time torque value is later than the first acquisition time corresponding to the first real-time torque value.

[0059] If the difference is greater than the preset rate of change threshold, the time difference between the target time and the second acquisition time is obtained to obtain the correction maintenance time.

[0060] It should be noted that if the change rate is greater than the preset change rate threshold, there is no need to modify the second heating power adjustment strategy, and the real-time torque change rate between the third real-time torque value and the second real-time torque value is still determined to be greater than the preset change rate threshold.

[0061] Multiply the second heating power ratio by the correction duration to obtain the second duration, thus obtaining the second heating power adjustment strategy that includes the second heating power value and the second duration, wherein the second heating power ratio is the ratio of the current heating power to the second heating power value.

[0062] In summary, the method of this application first directly obtains the current torque value through an online torque meter. When a large deviation between the current torque and the target torque is detected, a first heating power adjustment strategy for the heating device within the preset future time period is determined based on a preset first power generation strategy. This minimizes the overshoot phenomenon caused by excessive response in traditional control. Furthermore, it integrates predicted torque based on historical torque extrapolation and predicted torque based on the temperature-torque mapping relationship, generating a more reliable prediction curve through weighted averaging, thereby improving the robustness and accuracy of predictions under complex working conditions. In addition, the method introduces a preset correction strategy to modify the first heating power adjustment strategy, resulting in a second heating power adjustment strategy. By continuously monitoring the torque change rate, the heating power and holding time are dynamically reduced, which shortens the adjustment time of recycled asphalt mortar heating as much as possible while improving the stability of recycled asphalt mortar product quality.

[0063] Please see Figure 2 The diagram shows a structural block diagram of a dynamic heating control device for recycled asphalt mortar based on torque feedback, according to this application.

[0064] like Figure 2 As shown, the dynamic heating control device 200 for recycled asphalt mortar includes an acquisition module 210, a judgment module 220, a generation module 230, a first control module 240, a correction module 250, and a second control module 260.

[0065] The acquisition module 210 is configured to acquire the current torque value of the recycled asphalt mortar in the recycled asphalt mortar container at the current moment, and the current heating power corresponding to the current torque value, wherein the current heating power is the heating power executed by the heating device at the current moment; the judgment module 220 is configured to determine whether the absolute value of the difference between the current torque value and the preset target torque value is greater than a first preset threshold; the generation module 230 is configured to, if it is greater than the first preset threshold, determine a predicted torque change curve within a future preset time period based on the current heating power, and determine a first heating power adjustment strategy of the heating device within the future preset time period based on the predicted torque change curve and a preset first power generation strategy, wherein the first heating power adjustment strategy includes a first heating power value and a first maintenance time; The first control module 240 is configured to perform first control on the heating device according to the first heating power adjustment strategy, and continuously acquire the real-time torque value of the recycled asphalt mortar at each moment during the first control process; the correction module 250 is configured to determine the first torque change rate between each real-time torque value, and correct the first heating power adjustment strategy according to each first torque change rate using a preset correction strategy to obtain a second heating power adjustment strategy, wherein the second heating power adjustment strategy includes a second heating power value and a second holding time, and the second heating power value is less than the first heating power value; the second control module 260 is configured to perform second control on the heating device according to the second heating power adjustment strategy until the absolute value of the difference between the real-time torque value and the target torque value is not greater than a first preset threshold.

[0066] It should be understood that Figure 2 The modules and references described in the document Figure 1 The steps described in the text correspond to those in the method described above. Therefore, the operations, features, and corresponding technical effects described above also apply to the method described in the text. Figure 2 The various modules in the document will not be described in detail here.

[0067] In other embodiments, the present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein when the program instructions are executed by a processor, the processor performs the torque feedback-based dynamic heating control method for recycled asphalt mortar in any of the above method embodiments.

[0068] In one embodiment, the computer-readable storage medium of the present invention stores computer-executable instructions, which are configured as follows:

[0069] Obtain the current torque value of the recycled asphalt mortar in the recycled asphalt mortar container at the current moment, and the current heating power corresponding to the current torque value, wherein the current heating power is the heating power executed by the heating device at the current moment;

[0070] Determine whether the absolute value of the difference between the current torque value and the preset target torque value is greater than a first preset threshold.

[0071] If the current heating power is greater than the first preset threshold, then based on the current heating power, a predicted torque change curve for a future preset time period is determined, and based on the predicted torque change curve, a first heating power adjustment strategy for the heating device for the future preset time period is determined based on a preset first power generation strategy, wherein the first heating power adjustment strategy includes a first heating power value and a first maintenance time.

[0072] The heating device is controlled according to the first heating power adjustment strategy, and the real-time torque value of the recycled asphalt mortar at each moment is continuously acquired during the first control process.

[0073] A first torque change rate is determined between each real-time torque value. Based on each first torque change rate, a preset correction strategy is used to correct the first heating power adjustment strategy to obtain a second heating power adjustment strategy. The second heating power adjustment strategy includes a second heating power value and a second holding time, and the second heating power value is less than the first heating power value.

[0074] The heating device is controlled in a second manner according to the second heating power adjustment strategy until the absolute value of the difference between the real-time torque value and the target torque value is not greater than the first preset threshold.

[0075] Computer-readable storage media may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required for at least one function; the data storage area may store data created based on the use of the torque feedback-based dynamic heating control device for recycled asphalt mortar. Furthermore, the computer-readable storage medium may include high-speed random access memory, and may also include memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some embodiments, the computer-readable storage medium may optionally include memory remotely configured relative to a processor, which can be connected to the torque feedback-based dynamic heating control device for recycled asphalt mortar via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0076] Figure 3 This is a schematic diagram of the structure of the electronic device provided in the embodiment of the present invention, such as... Figure 3 As shown, the device includes a processor 310 and a memory 320. The electronic device may also include an input device 330 and an output device 340. The processor 310, memory 320, input device 330, and output device 340 can be connected via a bus or other means. Figure 3 Taking a bus connection as an example, the memory 320 is the computer-readable storage medium described above. The processor 310 executes various server functions and data processing by running non-volatile software programs, instructions, and modules stored in the memory 320, thereby implementing the torque feedback-based dynamic heating control method for recycled asphalt mortar described in the above embodiment. The input device 330 can receive input digital or character information and generate key signal inputs related to user settings and function control of the torque feedback-based dynamic heating control device for recycled asphalt mortar. The output device 340 may include a display screen or other display device.

[0077] The aforementioned electronic device can execute the method provided in the embodiments of the present invention, and has the corresponding functional modules and beneficial effects for executing the method. Technical details not described in detail in this embodiment can be found in the method provided in the embodiments of the present invention.

[0078] In one implementation, the aforementioned electronic device is used in a torque feedback-based dynamic heating control device for recycled asphalt mortar, serving as a client, and includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, which, when executed by the at least one processor, enable the at least one processor to:

[0079] Obtain the current torque value of the recycled asphalt mortar in the recycled asphalt mortar container at the current moment, and the current heating power corresponding to the current torque value, wherein the current heating power is the heating power executed by the heating device at the current moment;

[0080] Determine whether the absolute value of the difference between the current torque value and the preset target torque value is greater than a first preset threshold.

[0081] If the current heating power is greater than the first preset threshold, then based on the current heating power, a predicted torque change curve for a future preset time period is determined, and based on the predicted torque change curve, a first heating power adjustment strategy for the heating device for the future preset time period is determined based on a preset first power generation strategy, wherein the first heating power adjustment strategy includes a first heating power value and a first maintenance time.

[0082] The heating device is controlled according to the first heating power adjustment strategy, and the real-time torque value of the recycled asphalt mortar at each moment is continuously acquired during the first control process.

[0083] A first torque change rate is determined between each real-time torque value. Based on each first torque change rate, a preset correction strategy is used to correct the first heating power adjustment strategy to obtain a second heating power adjustment strategy. The second heating power adjustment strategy includes a second heating power value and a second holding time, and the second heating power value is less than the first heating power value.

[0084] The heating device is controlled in a second manner according to the second heating power adjustment strategy until the absolute value of the difference between the real-time torque value and the target torque value is not greater than the first preset threshold.

[0085] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of various embodiments or some parts of embodiments.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dynamic heating control method for recycled asphalt mortar based on torque feedback, characterized in that, include: Obtain the current torque value of the recycled asphalt mortar in the recycled asphalt mortar container at the current moment, and the current heating power corresponding to the current torque value, wherein the current heating power is the heating power executed by the heating device at the current moment; Determine whether the absolute value of the difference between the current torque value and the preset target torque value is greater than a first preset threshold. After determining whether the absolute value of the difference between the current torque value and the preset target torque value is greater than the first preset threshold, the method further includes: If it is not greater than the first preset threshold, the historical torque value at each historical moment is directly obtained, and the second torque change rate between each historical torque value and the current torque value is determined, wherein the historical heating power corresponding to each historical moment is the same as the current heating power. Based on each second torque change rate, a third heating power adjustment strategy for the heating device is determined within a future preset time period based on a preset second power generation strategy. The heating device is controlled in a third manner according to the third heating power adjustment strategy until the absolute value of the difference between the real-time torque value and the target torque value is not greater than the second preset threshold, wherein the second preset threshold is less than the first preset threshold. If the current heating power is greater than the first preset threshold, then based on the current heating power, a predicted torque change curve for a future preset time period is determined, and based on the predicted torque change curve, a first heating power adjustment strategy for the heating device for the future preset time period is determined based on a preset first power generation strategy, wherein the first heating power adjustment strategy includes a first heating power value and a first maintenance time. The heating device is controlled according to the first heating power adjustment strategy, and the real-time torque value of the recycled asphalt mortar at each moment is continuously acquired during the first control process. A first torque change rate is determined between each real-time torque value. Based on each first torque change rate, a preset correction strategy is used to correct the first heating power adjustment strategy to obtain a second heating power adjustment strategy. The second heating power adjustment strategy includes a second heating power value and a second holding time, and the second heating power value is less than the first heating power value. The heating device is controlled in a second manner according to the second heating power adjustment strategy until the absolute value of the difference between the real-time torque value and the target torque value is not greater than the first preset threshold.

2. The method for dynamic heating control of recycled asphalt mortar based on torque feedback according to claim 1, characterized in that, in, The second torque change rate is the ratio between a historical torque difference and a historical time difference, wherein the historical torque difference is the difference between a historical torque value and the current torque value, and the historical time difference is the difference between the acquisition time corresponding to the historical torque value and the current time. The step of determining the third heating power adjustment strategy of the heating device within the future preset time period based on each of the second torque change rates and a preset second power generation strategy includes: The second torque change rate with the largest value among the various second torque change rates is selected and defined as the target second torque change rate. The ratio between the target torque difference and the target second torque change rate is calculated to obtain the third holding time. The target torque difference is the absolute value of the difference between the target torque value and the current torque value. Based on the third maintenance time and the current heating power, a third heating power adjustment strategy for the heating device is determined within the future preset time period.

3. The method for dynamic heating control of recycled asphalt mortar based on torque feedback according to claim 1, characterized in that, The step of determining the predicted torque change curve within a preset time period based on the current heating power includes: The historical torque values ​​at each historical moment are obtained, and the historical torque values ​​are sorted according to the chronological order to obtain a historical torque value sequence. The historical heating power corresponding to each historical moment is the same as the current heating power. Calculate the first torque difference between the first historical torque value in the historical torque value sequence and the current torque value, and add the other historical torque values ​​to the first torque difference in turn according to the sequence position of each historical torque value to obtain at least one first predicted torque, wherein the other historical torque values ​​are any historical torque values ​​in the historical torque value sequence after removing the first historical torque value; The at least one first predicted torque is corrected based on at least one historical temperature value to obtain at least one target predicted torque; The at least one target predicted torque and the predicted time corresponding to the at least one target predicted torque are input into a pre-constructed two-dimensional coordinate system to obtain at least one coordinate point. The at least one coordinate point is then fitted to obtain a predicted torque change curve within a preset time period in the future. The horizontal axis of the two-dimensional coordinate system is the predicted time, and the vertical axis of the two-dimensional coordinate system is the target predicted torque.

4. The method for dynamic heating control of recycled asphalt mortar based on torque feedback according to claim 3, characterized in that, The step of correcting the at least one first predicted torque based on at least one historical temperature value to obtain at least one target predicted torque includes: The historical temperature values ​​at each historical moment are obtained, and the historical temperature values ​​are sorted according to the chronological order to obtain the historical temperature sequence. Calculate the first temperature difference between the historical temperature value in the historical temperature sequence and the current temperature value corresponding to the current moment, and add the other historical temperature values ​​to the first temperature difference in turn according to the sequence position of each historical temperature value to obtain at least one predicted temperature, wherein the other historical torque values ​​are any historical torque values ​​in the historical torque value sequence after removing the first historical torque value. Based on a pre-established temperature-torque mapping table, obtain a second predicted torque corresponding to the at least one predicted temperature; The average of a first predicted torque and a second predicted torque corresponding to a certain prediction time is taken to obtain a certain target predicted torque, that is, the at least one target predicted torque is obtained.

5. The method for dynamic heating control of recycled asphalt mortar based on torque feedback according to claim 1, characterized in that, The step of determining the first heating power adjustment strategy of the heating device within the future preset time period based on the predicted torque change curve and a preset first power generation strategy includes: Select the target torque value on the predicted torque change curve, determine the target time corresponding to the target torque value according to the preset two-dimensional coordinate system, calculate the time difference between the target time and the current time, and obtain the current maintenance time; Multiply the first heating power ratio by the current holding time to obtain the first holding time, thus obtaining the first heating power adjustment strategy that includes the first heating power value and the first holding time, wherein the first heating power ratio is the ratio of the current heating power to the first heating power value.

6. The method for dynamic heating control of recycled asphalt mortar based on torque feedback according to claim 5, characterized in that, The step of determining the torque change rate between each real-time torque value, and then correcting the first heating power adjustment strategy according to each torque change rate using a preset correction strategy to obtain the second heating power adjustment strategy includes: The real-time torque change rate between the first real-time torque value and the second real-time torque value is obtained, and it is determined whether the real-time torque change rate is greater than a preset change rate threshold. The first real-time torque value and the second real-time torque value are two adjacent real-time torque values, and the second acquisition time corresponding to the second real-time torque value is later than the first acquisition time corresponding to the first real-time torque value. If the difference is greater than the preset rate of change threshold, the time difference between the target time and the second acquisition time is obtained to obtain the correction maintenance time. Multiply the second heating power ratio by the correction duration to obtain the second duration, thus obtaining the second heating power adjustment strategy that includes the second heating power value and the second duration, wherein the second heating power ratio is the ratio of the current heating power to the second heating power value.

7. A dynamic heating control device for recycled asphalt mortar based on torque feedback, characterized in that, include: The acquisition module is configured to acquire the current torque value of the recycled asphalt mortar in the recycled asphalt mortar container at the current moment, and the current heating power corresponding to the current torque value, wherein the current heating power is the heating power executed by the heating device at the current moment; The judgment module is configured to determine whether the absolute value of the difference between the current torque value and the preset target torque value is greater than a first preset threshold. After determining whether the absolute value of the difference between the current torque value and the preset target torque value is greater than the first preset threshold, the module further includes: If it is not greater than the first preset threshold, the historical torque value at each historical moment is directly obtained, and the second torque change rate between each historical torque value and the current torque value is determined, wherein the historical heating power corresponding to each historical moment is the same as the current heating power. Based on each second torque change rate, a third heating power adjustment strategy for the heating device is determined within a future preset time period based on a preset second power generation strategy. The heating device is controlled in a third manner according to the third heating power adjustment strategy until the absolute value of the difference between the real-time torque value and the target torque value is not greater than the second preset threshold, wherein the second preset threshold is less than the first preset threshold. The generation module is configured to, if the current heating power is greater than a first preset threshold, determine the predicted torque change curve within a future preset time period based on the current heating power, and determine the first heating power adjustment strategy of the heating device within the future preset time period based on the predicted torque change curve and a preset first power generation strategy, wherein the first heating power adjustment strategy includes a first heating power value and a first maintenance time. The first control module is configured to perform first control on the heating device according to the first heating power adjustment strategy, and continuously acquire the real-time torque value of the recycled asphalt mortar at each moment during the first control process. The correction module is configured to determine a first torque change rate between each real-time torque value, and to correct the first heating power adjustment strategy according to each first torque change rate by adopting a preset correction strategy to obtain a second heating power adjustment strategy. The second heating power adjustment strategy includes a second heating power value and a second holding time, and the second heating power value is less than the first heating power value. The second control module is configured to perform second control on the heating device according to the second heating power adjustment strategy until the absolute value of the difference between the real-time torque value and the target torque value is not greater than the first preset threshold.

8. An electronic device, characterized in that, include: At least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by a processor, it implements the method described in any one of claims 1 to 6.

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