Motor reducer load spectrum compilation method and device for engineering machinery and storage medium
By obtaining the input parameters and torque of the reducer in a test bench calibration environment, using pressure difference and current sensors to collect data, and correcting the torque calculation formula, the problem of insufficient accuracy of the reducer load spectrum in the existing technology is solved, the load spectrum can be obtained conveniently and accurately, and the structural design and service life are improved.
Patent Information
- Application Number
- CN202510723486.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2025-09-05
AI Technical Summary
The existing torque calculation formula has calculation deviations in engineering machinery, resulting in insufficient accuracy of the reducer load spectrum, affecting the structural design and service life.
By obtaining the input parameters and torque of the reducer in the test bench calibration environment, using pressure difference and current sensors to collect data, the torque calculation formula is corrected to generate an accurate load spectrum.
The load spectrum of the reducer is conveniently and accurately obtained, thereby improving the accuracy of the structural design and the service life.
Smart Images
Figure CN120594070A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of engineering machinery, and in particular to a method for compiling a load spectrum of a motor reducer for engineering machinery, an electronic device, and a computer-readable storage medium. Background Art
[0002] Construction machinery operates under harsh conditions and complex loads, making motor reducer structures susceptible to fatigue damage under the long-term effects of random loads. The reducer's load spectrum is essential data for structural fatigue design and testing. For construction machinery, testing the reducer's load spectrum is crucial for guiding motor reducer structural design, identifying design risks, and improving performance and service life. However, due to calculation errors in existing torque calculation formulas, calculating the reducer's input torque based on acquired reducer input parameters using existing torque calculation formulas will affect the accuracy of the generated reducer load spectrum. Summary of the Invention
[0003] The purpose of this application is to provide a method for compiling a load spectrum of a motor reducer for engineering machinery, an electronic device and a computer-readable storage medium, which can realize convenient and accurate acquisition of the load spectrum of the reducer.
[0004] To achieve the above objectives:
[0005] In a first aspect, an embodiment of the present application provides a method for compiling a load spectrum of a motor reducer for engineering machinery, comprising:
[0006] Obtaining input parameters and a calibrated first input torque corresponding to the reducer under at least one preset working condition under a test bench calibration environment; the input parameters include a pressure difference collected by a pressure difference sensor installed on the motor and a current collected by a current sensor;
[0007] Based on the first input torque and a second input torque calculated by a torque calculation formula to be corrected, the torque calculation formula is corrected; the torque calculation formula is used to calculate the input torque of the reducer according to the pressure difference and the current;
[0008] Determine, based on the input parameters of the reducer under the at least one preset working condition in an actual vehicle working environment, a corresponding rotational speed and a third input torque of the reducer obtained by the modified torque calculation formula;
[0009] A load spectrum of the speed reducer is generated according to the third input torque and the rotational speed.
[0010] Optionally, the correcting the torque calculation formula based on the first input torque and a second input torque calculated by the torque calculation formula to be corrected includes:
[0011] According to the pressure difference and the current corresponding to the reducer under at least one preset working condition, the torque calculation formula to be corrected is obtained: At least one second input torque is calculated; wherein T represents torque, f(I) represents displacement and I represents current, ΔP represents voltage difference, and a, b, and c represent constants;
[0012] The torque calculation formula is corrected according to the difference between the first input torque and the corresponding second input torque to obtain the corrected torque calculation formula k' is the target correction coefficient.
[0013] Optionally, the torque calculation formula is corrected according to the difference between the first input torque and the corresponding second input torque to obtain the corrected torque calculation formula: include:
[0014] determining, based on a difference between the first input torque and the corresponding second input torque, a target displacement correction coefficient k' corresponding to an interval in which the difference exists; wherein different intervals of the difference correspond to different displacement correction coefficients;
[0015] According to the target correction coefficient k', the torque calculation formula Make corrections to obtain the corrected torque calculation formula
[0016] Optionally, the first input torque is obtained by calculating using a torque calibration formula of a test bench; the torque calibration formula is used to calibrate the input torque of the reducer.
[0017] Optionally, before correcting the torque calculation formula based on the first input torque and the second input torque calculated by the torque calculation formula to be corrected, the method includes:
[0018] In response to the motor being in a constant displacement state, determining f(I) to be a certain value k2;
[0019] According to the pressure difference corresponding to the reducer under at least one preset working condition, based on the torque calculation formula Torque calibration formula for test bench Make corrections to obtain the corrected torque calibration formula T t represents the test bench torque, k1 represents the correction coefficient, i1 represents the speed ratio of the reducer, i2 represents the speed ratio of the power head, η1 represents the mechanical efficiency of the reducer, and η2 represents the mechanical efficiency of the power head.
[0020] Optionally, the torque calculation formula is based on the pressure difference corresponding to the reducer under at least one preset working condition. Torque calibration formula for test bench Make corrections to obtain the corrected torque calibration formula include:
[0021] According to the pressure difference corresponding to the reducer under at least one preset working condition, the torque calculation formula is Calculate the fourth input torque and the torque calibration formula Calculate the fifth input torque corresponding to the reducer under the at least one preset working condition under the test bench calibration environment;
[0022] The torque calibration formula is corrected according to the difference between the fourth input torque and the fifth input torque to obtain the corrected torque calibration formula:
[0023] Optionally, the method further includes:
[0024] The input parameters are preprocessed.
[0025] Optionally, the method further includes:
[0026] The current and pressure difference corresponding to the motor under at least one preset working condition in an actual vehicle working environment are obtained through a pressure difference sensor and a current sensor installed on the motor.
[0027] In a second aspect, an embodiment of the present application provides an electronic device, comprising: a processor and a memory storing a computer program, wherein when the processor runs the computer program, the above-mentioned method for compiling a load spectrum of a motor reducer for engineering machinery is implemented.
[0028] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, the method for compiling a load spectrum of a motor reducer for engineering machinery is implemented.
[0029] The present invention provides a method for compiling a load spectrum of a motor reducer for engineering machinery, an electronic device, and a computer-readable storage medium. The method comprises: obtaining input parameters and a calibrated first input torque corresponding to the reducer under at least one preset working condition in a test bench calibration environment; the input parameters include a pressure difference collected by a pressure difference sensor installed on the motor and a current collected by a current sensor; modifying a torque calculation formula based on the first input torque and a second input torque calculated by a torque calculation formula to be modified; the torque calculation formula is used to calculate the input torque of the reducer based on the pressure difference and the current; determining the corresponding speed and a third input torque of the reducer obtained by the modified torque calculation formula based on the input parameters of the reducer under at least one preset working condition in an actual vehicle working environment; and generating a load spectrum of the reducer based on the third input torque and the speed. In this way, the torque calculation formula is modified by the input torque calibrated by the reducer under at least one preset working condition in the test bench calibration environment, and then the input torque of the reducer under the actual vehicle working environment is calculated based on the modified torque calculation formula, which can reduce or eliminate calculation deviations and achieve convenient and accurate acquisition of the load spectrum of the reducer. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 A schematic flow chart of a method for compiling a load spectrum for a motor reducer for engineering machinery provided in an embodiment of the present invention;
[0031] Figure 2 A schematic structural diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION
[0032] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different drawings represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with this application.
[0033] It should be noted that, in this document, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context of the specific embodiment.
[0034] It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are merely used to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the term "if" as used herein may be interpreted as "at the time of," "when," or "in response to a determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprising" and "including" indicate the presence of the described features, steps, operations, elements, components, items, types, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, types, and / or groups. The terms "or" and "and / or" as used herein are to be interpreted as inclusive, meaning any one or any combination. Thus, “A, B, or C” or “A, B, and / or C” means “any of: A; B; C; A and B; A and C; B and C; A, B, and C.” An exception to this definition occurs only when a combination of elements, functions, steps, or operations are inherently mutually exclusive in some manner.
[0035] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are shown in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence in the order indicated by the arrows. Unless clearly stated herein, the execution of these steps is not strictly limited in order, and they can be performed in other orders. Moreover, at least a portion of the steps in the figure may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.
[0036] It should be noted that in this article, step codes such as S101 and S102 are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantial limitation on the order. When implementing the step, those skilled in the art may execute S102 first and then S101, etc., but these should all be within the scope of protection of this application.
[0037] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.
[0038] In the subsequent description, the use of suffixes such as "module", "component" or "unit" to represent elements is only for the purpose of facilitating the description of the present application and has no specific meaning. Therefore, "module", "component" or "unit" can be used interchangeably.
[0039] See Figure 1 , a method for compiling a load spectrum of a motor reducer for engineering machinery provided in an embodiment of the present application. The method for compiling a load spectrum of a motor reducer for engineering machinery provided in an embodiment of the present application can be executed by a load spectrum compiling device for a motor reducer for engineering machinery provided in an embodiment of the present application. The load spectrum compiling device for a motor reducer for engineering machinery can be implemented in software and / or hardware, such as a computer or a server or other electronic device. In this embodiment, the execution subject of the method for compiling a load spectrum of a motor reducer for engineering machinery is an electronic device as an example. The method for compiling a load spectrum of a motor reducer for engineering machinery provided in this embodiment includes:
[0040] Step S101: Obtain input parameters and a calibrated first input torque corresponding to the reducer under at least one preset working condition in a test bench calibration environment; the input parameters include a pressure difference collected by a pressure difference sensor installed on the motor and a current collected by a current sensor.
[0041] Optionally, the engineering machinery may be a crane, an excavator or a rotary drilling rig, etc. The motor reducer is a combination of a motor (i.e., an electric motor) and a reducer, which reduces the output speed of the motor and increases the torque through the reducer, thereby meeting the engineering machinery's demand for low-speed, high-torque power. The test bench calibration environment refers to a special experimental condition setting for precise calibration and performance testing of the motor reducer. The differential pressure sensor can obtain the pressure difference by detecting the pressure difference between the output ports of the motor; the current sensor can be a Hall effect sensor, a current transformer, etc. It should be understood that the above is only an example and is not intended to limit the scope of protection of this application.
[0042] In this embodiment, when implementing the method for compiling a load spectrum of a motor reducer for a working machine, it is necessary to first build a test system. Specifically, a pressure difference sensor and a current sensor are first installed at the output port of the motor, and a communication channel is built between the pressure difference sensor, the current sensor and the data acquisition device, as well as a communication channel between the data acquisition device and the electronic device, so as to ensure that data information can be transmitted normally, and then the electronic device can obtain the input parameters corresponding to the reducer under at least one preset working condition in the calibration environment of the test bench.
[0043] Among them, in order to ensure that the load spectrum of the reducer obtained can be as close as possible to the actual working state of the whole machine, the preset working conditions should include typical working conditions of engineering machinery as much as possible. Taking the engineering machinery as a rotary drilling rig as an example, the preset working conditions should include at least one working condition of lowering, drilling, lifting the drill, and throwing away the soil. In the test bench calibration environment, by simulating the working conditions of the engineering machinery, the corresponding input parameters and calibrated first input torque of the reducer under at least one preset working condition are obtained. It can be understood that since the output of the motor will serve as the input of the reducer, the pressure difference collected by the pressure difference sensor installed on the motor and the current collected by the current sensor can be used as the input parameters of the reducer.
[0044] The first input torque may be calculated using a torque calibration formula on a test bench; the torque calibration formula is used to calibrate the input torque of the reducer. In this embodiment, if the torque calibration formula does not have a calculation error or the calculation error of the torque calibration formula is negligible, the first input torque calculated using the torque calibration formula on the test bench may serve as the reference input torque of the reducer.
[0045] Step S102: Based on the first input torque and the second input torque calculated by the torque calculation formula to be corrected, the torque calculation formula is corrected; the torque calculation formula is used to calculate the input torque of the reducer according to the pressure difference and the current.
[0046] Among them, in the test bench calibration environment, the first input torque corresponding to the reducer under at least one preset working condition can be regarded as the accurate or reference input torque of the reducer, and the second input torque calculated by the torque calculation formula to be corrected can be regarded as having an error. Therefore, the torque calculation formula can be corrected based on the first input torque and the second input torque calculated by the torque calculation formula to be corrected.
[0047] Specifically, according to the pressure difference and current corresponding to the reducer under at least one preset working condition, the torque calculation formula to be corrected is obtained: At least one second input torque is calculated; wherein T represents torque, f(I) represents displacement and I represents current, ΔP represents pressure difference, and a, b, and c represent constants. The torque calculation formula is corrected according to the difference between the first input torque and the corresponding second input torque to obtain a corrected torque calculation formula.
[0048] Among them, for the pressure difference and current corresponding to the reducer under each preset working condition, the torque calculation formula to be corrected can be used Calculate the corresponding second input torque. It should be noted that the torque calculation formula to be corrected can be the torque calculation formula provided by the motor manufacturer, that is, the existing torque calculation formula. The torque calculation formula to be corrected considers that the current and displacement are in a linear relationship, but in fact the current and displacement may not be in a linear relationship, so the torque calculation formula needs to be corrected. By comparing the first input torque and the second input torque corresponding to the reducer under each preset working condition, the difference between the first input torque and the corresponding second input torque can be obtained. Since the difference can represent the torque calculation accuracy of the torque calculation formula, the torque calculation formula can be corrected according to the difference between the first input torque and the corresponding second input torque to obtain a corrected torque calculation formula.
[0049] In one embodiment, the torque calculation formula is modified according to the difference between the first input torque and the corresponding second input torque, including:
[0050] Determining a target displacement correction coefficient k' corresponding to an interval in which the difference exists, based on a difference between the first input torque and the corresponding second input torque; wherein different intervals of the difference correspond to different displacement correction coefficients;
[0051] The torque calculation formula is corrected according to the target correction coefficient k' to obtain the corrected torque calculation formula
[0052] It should be noted that when there are multiple preset operating conditions, since the difference between the first input torque and the corresponding second input torque can be calculated for each preset operating condition, that is, there are multiple differences between the first input torque and the corresponding second input torque. Therefore, when the torque calculation formula is corrected according to the difference between the first input torque and the corresponding second input torque, the difference between the first input torque and the corresponding second input torque can be understood as the average value, median value or maximum value of all differences between the first input torque and the corresponding second input torque.
[0053] According to the difference between the first input torque and the corresponding second input torque, the correspondence between different difference intervals and different correction coefficients of displacement can be queried to determine the target correction coefficient k' of displacement corresponding to the interval where the difference exists. Then, the torque calculation formula is corrected using the target correction coefficient k' to obtain the corrected torque calculation formula The correction factor is used to correct the torque calculation formula to improve the torque calculation accuracy of the corrected torque calculation formula. In this way, the torque calculation formula can be corrected quickly and accurately.
[0054] In one embodiment, before correcting the torque calculation formula based on the first input torque and the second input torque calculated by the torque calculation formula to be corrected, the method includes:
[0055] In response to the motor being in a constant displacement condition, f(I) is determined to be a certain value k2;
[0056] According to the pressure difference corresponding to the reducer under at least one preset working condition, based on the torque calculation formula Torque calibration formula for test bench Make corrections to obtain the corrected torque calibration formula T t represents the test bench torque, k1 represents the correction coefficient, i1 represents the speed ratio of the reducer, i2 represents the speed ratio of the power head, η1 represents the mechanical efficiency of the reducer, and η2 represents the mechanical efficiency of the power head.
[0057] Among them, when the motor is in a constant displacement state (also called constant displacement mode), the output displacement of the motor is fixed, and f(I) can be determined as a certain value k2. At this time, since there is no need to consider the influence of current, that is, there is no need to consider whether the current and displacement are linearly related, the torque calculation formula can be used. The calculated torque is considered accurate. It is understandable that if there is an error in the test bench itself, that is, there is a calculation error in the torque calibration formula of the test bench, in order to eliminate or reduce the influence of the error of the test bench itself and further improve the accuracy of the torque calculation, the torque calculation formula can be used based on the pressure difference corresponding to the reducer under at least one preset working condition under the test bench calibration environment. The calculated torque is used as a reference value, combined with the torque calibration formula of the test bench The calculated torque is used to calibrate the torque of the test bench. Make corrections to obtain the corrected torque calibration formula In this way, the torque calibration formula of the test bench can be accurately and conveniently corrected, further improving the accuracy of torque calculation.
[0058] In one embodiment, according to the pressure difference corresponding to the reducer under at least one preset working condition, based on the torque calculation formula Torque calibration formula for test bench Make corrections to obtain the corrected torque calibration formula include:
[0059] According to the pressure difference corresponding to the reducer under at least one preset working condition, the torque calculation formula is used Calculate the fourth input torque and the torque calibration formula Calculate the fifth input torque corresponding to the reducer under at least one preset working condition under the test bench calibration environment;
[0060] The torque calibration formula is corrected according to the difference between the fourth input torque and the fifth input torque to obtain the corrected torque calibration formula:
[0061] Among them, according to the corresponding pressure difference of the reducer under at least one preset working condition, the torque calculation formula can be used The fourth input torque is calculated respectively as the reference torque corresponding to the reducer under at least one preset working condition. At the same time, the torque calibration formula is used The fifth input torque corresponding to the reducer under at least one preset operating condition under the test bench calibration environment is calculated. The specific calculation process can be referred to the existing technology and will not be repeated here. It should be noted that when there are multiple preset operating conditions, since the difference between the fourth input torque and the corresponding fifth input torque can be calculated for each preset operating condition, that is, there are multiple differences between the fourth input torque and the corresponding fifth input torque. Therefore, when the torque calibration formula is corrected based on the difference between the fourth input torque and the corresponding fifth input torque, the difference between the fourth input torque and the corresponding fifth input torque can be understood as the average value, median value, or maximum value of all differences between the fourth input torque and the corresponding fifth input torque.
[0062] According to the difference between the fourth input torque and the corresponding fifth input torque, the corresponding relationship between different difference intervals and correction coefficients can be queried to determine the displacement correction coefficient k1 corresponding to the interval where the difference exists. Then, the torque calibration formula is corrected using the correction coefficient k1 to obtain the corrected torque calibration formula The correction factor k1 is used to modify the torque calibration formula to improve the torque calculation accuracy of the modified torque calibration formula. This allows for quick and accurate correction of the torque calibration formula, further improving the accuracy of the generated reducer load spectrum.
[0063] Step S103: Determine the corresponding rotational speed and the third input torque of the reducer obtained by the revised torque calculation formula according to the input parameters of the reducer under at least one preset working condition in the actual vehicle working environment.
[0064] In particular, when basic data serving as the load spectrum of the reducer is obtained, that is, after obtaining the input parameters of the reducer under at least one preset operating condition in an actual vehicle operating environment, the third input torque of the reducer can be calculated using the revised torque calculation formula based on the input parameters of the reducer under at least one preset operating condition in the actual vehicle operating environment, and the corresponding speed can be determined. The speed calculation method can refer to the existing technology and will not be repeated here.
[0065] In one embodiment, the method further comprises:
[0066] The current and pressure difference corresponding to the motor under at least one preset working condition in the actual vehicle working environment are obtained through the pressure difference sensor and current sensor installed on the motor.
[0067] Among them, a pressure difference sensor and a current sensor can be installed on the motor of the engineering machinery, so that during the actual working process of the engineering machinery, the current of the motor under at least one preset working condition can be collected through the pressure difference sensor, and the pressure difference of the motor under at least one preset working condition can be collected through the current sensor, so as to accurately and real-time obtain the current and pressure difference corresponding to the motor under at least one preset working condition in the actual vehicle working environment.
[0068] Step S104: generating a load spectrum of the reducer according to the third input torque and the rotational speed.
[0069] Specifically, the load spectrum of the reducer is generated according to the third input torque and speed corresponding to the reducer under at least one preset working condition in the actual vehicle working environment. The specific process can be referred to the existing technology and will not be repeated here.
[0070] In summary, in the load spectrum compilation method for a motor reducer for engineering machinery provided in the above embodiment, the torque calculation formula is corrected by the input torque calibrated by the reducer under at least one preset working condition in the test bench calibration environment, and then the input torque of the reducer in the actual vehicle working environment is calculated according to the corrected torque calculation formula, which can reduce or eliminate calculation deviations and realize convenient and accurate acquisition of the load spectrum of the reducer.
[0071] In one embodiment, the method further includes: preprocessing the input parameters.
[0072] Specifically, the input parameters of the reducer under at least one preset operating condition in a test bench calibration environment and / or the input parameters of the reducer under at least one preset operating condition in an actual vehicle operating environment can be preprocessed to improve the validity of the input parameters. For example, abnormal input parameters can be eliminated, and input parameters corresponding to when the reducer is not operating can be removed.
[0073] Based on the same inventive concept as the above embodiments, an embodiment of the present invention provides an electronic device, such as Figure 2 As shown, the electronic device includes: a processor 310 and a memory 311 storing a computer program; wherein, Figure 2 The processor 310 shown in the figure is not used to indicate that the number of processors 310 is one, but is only used to indicate the positional relationship of the processor 310 relative to other devices. In actual applications, the number of processors 310 may be one or more; similarly, Figure 2The memory 311 shown in the figure has the same meaning, that is, it is only used to refer to the positional relationship of the memory 311 relative to other devices. In actual applications, the number of memories 311 can be one or more. When the processor 310 executes the computer program, the above-mentioned method for compiling a load spectrum for a motor reducer for construction machinery is implemented.
[0074] The electronic device may also include: at least one network interface 312. The various components in the electronic device are coupled together via a bus system 313. It is understood that the bus system 313 is used to achieve connection and communication between these components. In addition to the data bus, the bus system 313 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, Figure 2 Various buses are labeled as bus system 313.
[0075] Memory 311 may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory may include read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disk, or compact disc read-only memory (CD-ROM); magnetic surface memory may include magnetic disk memory or magnetic tape memory. Volatile memory may include random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus random access memory (DRRAM).The memory 311 described in the embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memories.
[0076] The memory 311 in the embodiment of the present invention is used to store various types of data to support the operation of the electronic device. Examples of these data include: any computer program used to operate on the electronic device, such as an operating system and an application; contact data; phone book data; messages; pictures; videos, etc. Among them, the operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., which are used to implement various basic services and process hardware-based tasks. The application program can include various applications, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services. Here, the program that implements the method of the embodiment of the present invention can be included in the application program.
[0077] Based on the same inventive concept as the above-mentioned embodiment, this embodiment also provides a computer-readable storage medium, in which a computer program is stored. The computer-readable storage medium may be a magnetic random access memory (FRAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a flash memory (Flash Memory), a magnetic surface memory, an optical disc, or a read-only optical disc (CD-ROM) or other memory; or it may be various devices including one or any combination of the above-mentioned memories, such as a mobile phone, a computer, a tablet device, a personal digital assistant, etc. When the computer program stored in the computer-readable storage medium is executed by the processor, the above-mentioned method for compiling a load spectrum of a motor reducer for engineering machinery is implemented. For the specific steps implemented when the computer program is executed by the processor, please refer to Figure 1 The description of the illustrated embodiment will not be repeated here.
[0078] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0079] As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion that may include elements other than the listed elements and may also include additional elements not specifically listed.
[0080] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.
Claims
1. A method for compiling a load spectrum of a motor reducer for engineering machinery, characterized in that: include: Obtaining input parameters and a calibrated first input torque corresponding to the reducer under at least one preset working condition under a test bench calibration environment; The input parameters include a pressure difference collected by a pressure difference sensor installed on the motor and a current collected by a current sensor; modifying the torque calculation formula based on the first input torque and a second input torque calculated by the torque calculation formula to be modified; The torque calculation formula is used to calculate the input torque of the reducer according to the pressure difference and the current; Determine, based on the input parameters of the reducer under the at least one preset working condition in an actual vehicle working environment, a corresponding rotational speed and a third input torque of the reducer obtained by the modified torque calculation formula; A load spectrum of the speed reducer is generated according to the third input torque and the rotational speed.
2. The method according to claim 1, characterized in that The step of correcting the torque calculation formula based on the first input torque and the second input torque calculated by the torque calculation formula to be corrected includes: According to the pressure difference and the current corresponding to the reducer under at least one preset working condition, the torque calculation formula to be corrected is obtained: At least one second input torque is calculated; wherein T represents torque, f(I) represents displacement and I represents current, ΔP represents voltage difference, and a, b, and c represent constants; The torque calculation formula is corrected according to the difference between the first input torque and the corresponding second input torque to obtain the corrected torque calculation formula k' is the target correction coefficient.
3. The method according to claim 2, characterized in that The torque calculation formula is corrected according to the difference between the first input torque and the corresponding second input torque to obtain the corrected torque calculation formula include: determining, based on a difference between the first input torque and the corresponding second input torque, a target displacement correction coefficient k' corresponding to an interval in which the difference exists; wherein different intervals of the difference correspond to different displacement correction coefficients; According to the target correction coefficient k', the torque calculation formula Make corrections to obtain the corrected torque calculation formula 4. The method according to claim 2, characterized in that The first input torque is obtained by calculating using a torque calibration formula of a test bench; the torque calibration formula is used to calibrate the input torque of the reducer.
5. The method according to claim 4, characterized in that Before correcting the torque calculation formula based on the first input torque and the second input torque calculated by the torque calculation formula to be corrected, the method includes: In response to the motor being in a constant displacement state, determining f(I) to be a certain value k2; According to the pressure difference corresponding to the reducer under at least one preset working condition, based on the torque calculation formula Torque calibration formula for test bench Make corrections to obtain the corrected torque calibration formula T t represents the test bench torque, k1 represents the correction coefficient, i1 represents the speed ratio of the reducer, i2 represents the speed ratio of the power head, η1 represents the mechanical efficiency of the reducer, and η2 represents the mechanical efficiency of the power head.
6. The method according to claim 5, characterized in that The torque calculation formula is based on the pressure difference corresponding to the reducer under at least one preset working condition. Torque calibration formula for test bench Make corrections to obtain the corrected torque calibration formula include: According to the pressure difference corresponding to the reducer under at least one preset working condition, the torque calculation formula is Calculate the fourth input torque and the torque calibration formula Calculate the fifth input torque corresponding to the reducer under the at least one preset working condition under the test bench calibration environment; The torque calibration formula is corrected according to the difference between the fourth input torque and the fifth input torque to obtain the corrected torque calibration formula:
7. The method according to claim 1, characterized in that The method further comprises: The input parameters are preprocessed.
8. The method according to claim 1, characterized in that The method further comprises: The current and pressure difference corresponding to the motor under at least one preset working condition in an actual vehicle working environment are obtained through a pressure difference sensor and a current sensor installed on the motor.
9. An electronic device, characterized in that: include: A processor and a memory storing a computer program, wherein when the processor runs the computer program, the method for compiling a load spectrum of a motor reducer for engineering machinery according to any one of claims 1 to 8 is implemented.
10. A computer-readable storage medium, characterized in that A computer program is stored, and when the computer program is executed by a processor, the method for compiling a load spectrum of a motor reducer for engineering machinery according to any one of claims 1 to 8 is implemented.