Hub reduction gear control method and device, test bed, readable storage medium and chip

Abstract

The invention discloses a hub reduction gear control method and device, a test bench, a readable storage medium and a chip, and the method comprises the steps: obtaining a quality parameter corresponding to a sample assembly; judging whether a test bench corresponding to the sample assembly meets a safety performance condition or not, and generating a first judgment result; when the first judgment result is yes, at least one fault parameter corresponding to the sample piece assembly is determined; when the first judgment result is negative, the quality parameter is adjusted; and under the condition that the existence of the fault parameters is determined, the sample assembly is controlled to stop suddenly, and the fault parameters and quality parameters corresponding to the fault parameters are recorded. Through the scheme of the invention, the performance and durability test of the hub reduction gear under the extreme working condition can be directly simulated in a laboratory, the test cost is reduced, the test time is shortened, and the test efficiency and the stability and safety in the test process are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wheel-side reducers, and in particular to a wheel-side reducer control method, device, test bench, readable storage medium and chip. Background Art

[0002] Large heavy-loaded mining dump trucks mostly use the electric wheel technology of "generating electricity with oil" to drive the vehicle. The power transmission mechanism of this technology mainly includes two sets of left and right drive motors, wheel-side reducers, etc. Since one end of the wheel-side reducer is directly connected to the drive motor and the other end is directly connected to the rim and wheel, heavy-loaded mining trucks are generally heavy in tonnage, and components such as motors and reducers are large in size and small in batches. The production and vehicle testing costs are high, and vehicle road tests cannot be carried out at the customer's site. Therefore, the performance and durability of the wheel-side reducer are studied by experimental means in the laboratory.

[0003] At present, the performance and durability tests of wheel reducers are mostly carried out in the laboratory as "factory inspection" type tests. Fig.12 and Fig.13 Shown: In Fig.12 In the process, only the electric wheel assemblies on the left and right sides of the vehicle are moved to the test bench, the frequency conversion motor 1 3002 is connected to one end of the torque meter 1 3004, the other end of the torque meter 1 3004 is connected to one end of the sample assembly 1 3006, the other end of the sample assembly 1 3006 is connected to one end of the flange assembly 3008, the other end of the flange assembly 3008 is connected to one end of the sample assembly 2 3010, the other end of the sample assembly 2 3010 is connected to one end of the torque meter 2 3012, the other end of the torque meter 2 3012 is connected to the frequency conversion motor 2 3014, and controlled by the test bench in the laboratory; Fig.13 The wheel reducer is tested separately, the motor 2 2008, the wheel reducer 2 2004, the variable frequency motor 3 2006 and the torque meter 3 2002 are electrically connected, and the load motor and supporting devices and control program also use the original resources of the test bench. In addition, the traditional monitoring sample means are single and cannot simulate the control strategy for the reducer under specific vehicle operating conditions and certain extreme working conditions. The test method lacks scalability and safety. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a wheel-side reducer control method, device, test bench, readable storage medium and chip, which can solve the problem that traditional monitoring sample means are single and cannot simulate the control strategy for the reducer under specific vehicle operating conditions and certain extreme working conditions.

[0005] In view of this, an embodiment of the first aspect of the present invention provides a wheel-side reducer control method.

[0006] An embodiment of the second aspect of the present invention provides a wheel-side reducer control device.

[0007] An embodiment of a third aspect of the present invention provides a test bench.

[0008] An embodiment of a fourth aspect of the present invention provides a readable storage medium.

[0009] An embodiment of the fifth aspect of the present invention provides a chip.

[0010] In order to achieve the above-mentioned purpose, an embodiment of the first aspect of the present invention provides a wheel-side reducer control method for a test bench, the test bench includes vehicle supporting equipment, a sample assembly, a variable frequency motor and a torque meter, the sample assembly includes a motor and a wheel-side reducer, the sample assembly is connected to one end of the torque meter, and the other end of the torque meter is connected to the variable frequency motor, and the sample assembly is controlled by the variable frequency motor. The wheel-side reducer control method includes: obtaining quality parameters corresponding to the sample assembly, the quality parameters include motor parameters and wheel-side reducer parameters; judging whether the test bench corresponding to the sample assembly meets the safety performance conditions, and generating a first judgment result; when the first judgment result is yes, determining at least one fault parameter corresponding to the sample assembly, the fault parameter including at least one of the inverter voltage, motor power, motor speed and motor temperature on the sample assembly; when the first judgment result is no, adjusting the quality parameter; when it is determined that the fault parameter exists, controlling the sample assembly to stop suddenly, and recording the fault parameter and the quality parameter corresponding to the fault parameter.

[0011] A wheel reducer control method proposed in the present invention is applied to a test bench, which is composed of physical structures such as vehicle supporting equipment, sample assembly, variable frequency motor and torque meter. By collecting and analyzing data, combined with the parameters of the wheel reducer and motor in the sample assembly, the test bench construction and sample fixture are analyzed and calculated for structural strength to ensure the overall stability of the test bench during the test and control process. When it is determined that the test bench is stable and meets the safety performance requirements, the wheel reducer and motor in the sample are tested, and the actual working condition is loaded through the controller dual control system to simulate the operation control strategy of the wheel reducer under extreme working conditions. Through the autonomous determination system, the inverter and controller are connected in series, and the sample assembly is monitored and evaluated in multiple dimensions and multiple physical quantities such as real-time temperature feedback analysis to determine its fault conditions under different extreme data conditions, so as to achieve the purpose of reproducing the fault and record the fault data. It can be understood that through the wheel reducer control method proposed in the present invention, the test of the wheel reducer performance and durability in the road test can be directly simulated in the laboratory, reducing the test cost and test time, and improving the test efficiency and the stability and safety during the test.

[0012] In the above technical solution, whether the vehicle supporting equipment corresponding to the quality parameters meets the safety performance conditions is judged to generate a first judgment result, including: obtaining the load spectrum data of the actual vehicle in the mining area; performing a structural strength simulation analysis on the test bench according to the load spectrum data of the actual vehicle in the mining area, and generating a simulation analysis result; when the simulation analysis result exceeds the safety factor, determining that the first judgment result is yes, otherwise the first judgment result is no.

[0013] In this technical solution, before testing the sample assembly consisting of the wheel-side reducer and the motor, it is necessary to simulate the test bench through 3D software to ensure the stability of the test bench. By obtaining the load spectrum data of the actual vehicle in the mining area, that is, the torque data under the actual working conditions collected on site, the structural strength analysis is carried out through digital model simulation combined with 3D software simulation loading test bench to determine whether the parameters of the test sample meet the structural strength requirements, and ensure that the physical structures of the test bench built on the test site meet the safety factor. Only when the results of the simulation analysis meet the safety factor requirements can the test continue to improve the stability and safety of the test.

[0014] In the above technical solution, the simulation analysis results are generated, including: obtaining the limit data under extreme working conditions based on the load spectrum data of the actual vehicle in the mining area; calculating the limit data and the sample assembly parameters to formulate the test loading boundary; performing structural strength simulation analysis on the test bench corresponding to the sample assembly based on the test loading boundary combined with the simulation model to generate the simulation analysis results.

[0015] In this technical solution, by obtaining the torque data of the actual mining vehicle under the actual on-site collection conditions, the limit data under extreme working conditions are analyzed, which are the maximum torque of the wheel reducer of the actual mining vehicle during the heavy-load uphill process and the minimum torque of the wheel reducer during the no-load downhill process, as well as the corresponding input speed under the extreme torque conditions. The above-mentioned limit data are combined with the rated torque coefficient, and the wheel reducer and motor parameters of the test sample are calculated together to formulate the test loading boundary, that is, the model simulates the limit value of the actual on-site collection conditions, and the digital model is simulated to load, generate a simulation model of the test bench, calculate the extreme stress value of the test bench in the simulation model, and calculate the safety factor under the corresponding extreme working conditions according to the digital model. Through simulation analysis, the overall stability of the test bench construction and test samples during the test is ensured, the damage to the tooling and the occurrence of flying cars are reduced, and the safety of the test is improved.

[0016] In the above technical scheme, the test bench is controlled by the variable frequency drive and the vehicle controller, the variable frequency drive, the motor and the variable frequency motor are electrically connected, and the vehicle controller and the variable frequency drive, the sample assembly and the torque meter are electrically connected; at least one fault parameter corresponding to the sample assembly is determined, including: determining the power-on request of the vehicle controller for the variable frequency motor; the vehicle controller sets a set value for the motor parameter corresponding to the sample assembly; when at least one quality parameter is greater than the set value, the quality parameter is determined to be a fault parameter, and the quality parameters include inverter voltage, motor power, motor speed and motor temperature.

[0017] In this technical solution, the test bench is controlled by the variable frequency drive and the vehicle controller, that is, the ABB variable-frequency drive and the VCU (vehicle control unit) controller, and the control strategy technology of the wheel-side reducer durability test bench is built by the ABB variable-frequency drive and the VCU controller. The motor in the sample assembly is powered on and off by the VCU controller, and the VCU controller sends a torque request instruction to the torque meter, thereby controlling the test torque in the sample assembly and determining the test conditions. The VCU controller can also monitor and independently determine the feedback data of the sample assembly, and control the VCU controller to set the set values ​​corresponding to the motor and wheel-side reducer in the sample assembly through the gear vibration online measurement and autonomous determination system. After completing the power-on request for the variable frequency motor in the test bench, the VCU controller monitors the wheel-side reducer and motor parameters in the sample assembly through internal sensors. When the wheel-side reducer and motor parameters are greater than the set values ​​under the test conditions, the sample assembly fails under the test conditions. The motor parameters greater than the set values ​​are fault parameters. The corresponding test torque can be analyzed through the fault parameters to complete multi-dimensional and multi-physical quantity monitoring and improve the scalability of the test.

[0018] In the above technical solution, when it is determined that a fault parameter exists, the sample assembly is controlled to stop suddenly, and the fault parameter and the quality parameter corresponding to the fault parameter are recorded, including: when the vehicle controller detects that at least one quality parameter is greater than a set value, it is determined that the sample assembly has failed; the vehicle controller sends an emergency stop command to the frequency converter; the frequency converter controls the frequency converter motor to stop suddenly, driving the sample assembly to stop suddenly; the vehicle controller obtains the fault parameter; obtains the quality parameter corresponding to the fault parameter and the torque meter parameter corresponding to the quality parameter.

[0019] In this technical solution, the VCU controller makes a fault diagnosis corresponding to the sample assembly. When at least one motor parameter is greater than the set value, an emergency stop control command is issued to the ABB inverter. The ABB inverter issues an emergency stop command to the variable frequency motor. After the variable frequency motor stops suddenly, it drives the motor in the sample assembly to stop suddenly. By obtaining the motor parameters that trigger the fault diagnosis and the corresponding torque meter parameters, the test torque conditions under which the fault occurs and the motor fault parameters under the torque conditions can be obtained. Through the joint control of the ABB inverter and the VCU controller, the actual limit torque working condition is loaded on the sample assembly to simulate the fault parameters under extreme and harsh working conditions, so as to improve the structural dimensions and sample parameters of the sample according to the fault parameter analysis and improve the performance and quality of the wheel reducer.

[0020] In the above technical solution, when the first judgment result is no, the quality parameters are adjusted, specifically including: when the first judgment result is no, obtaining the test loading boundary corresponding to the safety factor; and adjusting the quality parameters according to the adjustment range corresponding to the test loading boundary.

[0021] In this technical solution, when the first judgment result is no, it means that the test bench formed by the sample assembly does not meet the safety factor requirements, and the physical structure stability of the test bench needs to be improved. Researchers can improve the sample structure size and sample parameters by obtaining the ultimate torque and the corresponding extreme stress value, perform product iteration and upgrade, and conduct the next test.

[0022] An embodiment of the second aspect of the present invention provides a wheel-side reducer control device for a test bench, the test bench including vehicle supporting equipment, a sample assembly, a variable frequency motor and a torque meter, the sample assembly including a motor and a wheel-side reducer, the sample assembly is connected to one end of the torque meter, and the other end of the torque meter is connected to the variable frequency motor, and the sample assembly is controlled by the variable frequency motor, the wheel-side reducer control device includes: an acquisition module, used to obtain quality parameters corresponding to the sample assembly and load spectrum data of actual vehicles in a mining area; a judgment module, used to judge whether the test bench corresponding to the sample assembly meets the safety performance conditions and generate a first judgment result; an analysis module, used to determine at least one fault parameter corresponding to the sample assembly when the first judgment result is yes, the fault parameters including at least one of the inverter voltage, motor power, motor speed and motor temperature on the sample assembly.

[0023] In this technical solution, the torque data under the actual on-site working conditions and the performance parameters and dimensional parameters of the wheel-side reducer and motor in the sample assembly are obtained through the acquisition module; the judgment module is used to judge whether the extreme stress value of the physical structure of the test bench meets the safety factor, thereby ensuring the stability of the test bench, reducing the probability of runaway and tooling damage, and improving the safety during the test; the analysis module is used to analyze the fault parameters corresponding to the limit torque of the sample assembly under simulated harsh working conditions, which are used to improve the structural dimensions and performance parameters of the sample.

[0024] An embodiment of the third aspect of the present invention provides a test bench, including vehicle supporting equipment, a sample assembly, a variable frequency motor and a torque meter, the sample assembly including a motor and a wheel-side reducer, the sample assembly is connected to one end of the torque meter, and the other end of the torque meter is connected to the variable frequency motor, and the sample assembly is controlled by the variable frequency motor; the vehicle supporting equipment includes a resistance grid, a cooling system, a frequency conversion cabinet and a fan; the variable frequency motor is used to drive the sample assembly, and the variable frequency motor also includes a reducer; the sample assembly includes a first sample assembly and a second sample assembly, the motor in the first sample assembly is energized and runs, and the second sample assembly reduces speed and increases torque of the first sample assembly through the reducer; the first sample assembly and the second sample assembly are connected by a flange; the flange includes a first flange and a second flange, and the first flange and the second flange are connected by a resin pin; a wheel-side reducer control device as provided in the embodiment of the third aspect.

[0025] In this technical solution, the vehicle supporting equipment including the resistor grid, cooling system, frequency converter and fan are built as a whole at the test site, which can reduce the test cost. Two sets of motors and wheel-side reducers form a sample assembly, one of which is a motor assembly with point operation as the first sample assembly; the other set of assemblies plays the role of deceleration and torque increase as the second sample assembly. The two sets of sample assemblies are connected by a customized flange in the middle, and the left and right flanges are connected by resin pins. The reducer cooperates with the second sample assembly to decelerate and increase torque, and the motor in the first sample assembly is powered on and frequency-converted by the frequency converter. The left and right flanges are connected by resin pins to improve the structural strength, reduce the time for single-sided disassembly and inspection of the sample assembly, save test time, and improve test efficiency.

[0026] An embodiment of the fourth aspect of the present invention provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method of the first aspect are implemented.

[0027] An embodiment of the fifth aspect of the present invention provides a chip, the chip includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the steps of the method of the first aspect.

[0028] Additional aspects and advantages of the present invention will become apparent in the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic flow chart of a wheel reducer control method according to an embodiment of the present application is shown;

[0030] Figure 2 A schematic flow chart of a wheel reducer control method according to an embodiment of the present application is shown;

[0031] Figure 3 A schematic flow chart of a wheel reducer control method according to an embodiment of the present application is shown;

[0032] Figure 4 A schematic flow chart of a wheel reducer control method according to an embodiment of the present application is shown;

[0033] Figure 5 A schematic flow chart of a wheel reducer control method according to an embodiment of the present application is shown;

[0034] Figure 6 A schematic flow chart of a wheel reducer control method according to an embodiment of the present application is shown;

[0035] Figure 7 A schematic structural block diagram of a wheel reducer control device according to an embodiment of the present application is shown;

[0036] Figure 8 A schematic structural block diagram of a test bench according to an embodiment of the present application is shown;

[0037] Fig. 9 A schematic structural block diagram of a test bench according to an embodiment of the present application is shown;

[0038] Fig.10 A logic diagram of a wheel reducer control method according to an embodiment of the present application is shown;

[0039] Fig.11 A schematic diagram of a wheel reducer control method according to an embodiment of the present application is shown;

[0040] Fig.12 A schematic diagram showing the structure of a test bench in the related art is shown;

[0041] Fig.13 A structural schematic diagram of a test bench in the related art is shown.

[0042] in, Figure 7 , Fig. 9 , Fig.12 and Fig.13 The corresponding relationship between the reference numerals and the component names is as follows:

[0043] 900: wheel reducer control device; 902: acquisition module; 906: judgment module; 908: analysis module; 3002: variable frequency motor 1; 3004: torque meter 1; 3006: sample assembly 1; 3008: flange assembly; 3010: sample assembly 2; 3012: torque meter 2; 3014: variable frequency motor 2; 2002: torque meter 3; 2004: wheel reducer 2; 2006: Variable frequency motor three; 2008: Motor two; 4002: Test bench; 4004: Vehicle supporting equipment; 4006: Sample assembly; 4008: Resistance grid; 4010: Cooling system; 4012: Fan; 4014: Frequency conversion cabinet; 4016: Motor; 4018: Wheel-side reducer; 4020: Torque meter; 4022: Variable frequency motor; 4024: Vehicle controller; 4026: Variable frequency drive. DETAILED DESCRIPTION

[0044] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present invention, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the embodiments of the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0046] The following is combined with Figures 1 to 11 , the wheel-side reducer control method, device, test bench, readable storage medium and chip provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0047] This embodiment provides a wheel-side reducer control method for a test bench, the test bench includes vehicle supporting equipment, a sample assembly, a variable frequency motor and a torque meter, the sample assembly includes a motor and a wheel-side reducer, the sample assembly is connected to one end of the torque meter, and the other end of the torque meter is connected to the variable frequency motor, the sample assembly is controlled by the variable frequency motor, and the wheel-side reducer control method is as follows Figure 1 As shown, including:

[0048] Step S102: obtaining quality parameters corresponding to the sample assembly;

[0049] Step S104: determining whether the test bench corresponding to the sample assembly meets the safety performance conditions, and generating a first determination result;

[0050] Step S106: when the first judgment result is yes, determining at least one fault parameter corresponding to the sample assembly;

[0051] Step S108: when the first judgment result is no, adjusting the quality parameter;

[0052] Step S110: When it is determined that the fault parameter exists, the sample assembly is controlled to stop suddenly, and the fault parameter and the quality parameter corresponding to the fault parameter are recorded.

[0053] The wheel reducer control method proposed in this embodiment is applied to a test bench, which is composed of physical structures such as vehicle supporting equipment, sample assembly, variable frequency motor and torque meter. By collecting and analyzing data, combined with the parameters of the wheel reducer and motor in the sample assembly, the test bench construction and sample fixture are analyzed and calculated for structural strength to ensure the overall stability of the test bench during the test and control process. When it is determined that the test bench is stable and meets the safety performance requirements, the wheel reducer and motor in the sample are tested, and the actual working condition is loaded through the controller dual control system to simulate the operation control strategy of the wheel reducer under extreme working conditions. Through the autonomous determination system, the inverter and controller are connected in series, and the sample assembly is monitored and evaluated in multiple dimensions and multiple physical quantities such as real-time temperature feedback analysis to determine its fault conditions under different extreme data conditions, so as to achieve the purpose of reproducing the fault and record the fault data. It can be understood that through the wheel reducer control method proposed in the present invention, the test of the wheel reducer performance and durability in the road test can be directly simulated in the laboratory, reducing the test cost and test time, and improving the test efficiency and the stability and safety during the test.

[0054] Among them, the overall logic diagram of the wheel-side reducer control method is as follows: Fig.10 As shown, the data obtained through data feedback is analyzed to extract the working conditions, the extracted data and the test bench parameters are matched and theoretically calculated, the safety performance of the test bench is determined, and simulation verification is performed. When the safety performance of the test bench meets the requirements, the test bench is built. The test bench is subjected to a fault reproduction test, and the data under the extreme working conditions is input to simulate the extreme working conditions, the fault parameters corresponding to the extreme working conditions are determined, and a durability performance test is performed. The obtained fault parameters and the corresponding extreme working condition parameters are transmitted back, and the product iteration design is completed, the sample structure size and parameters are improved, and the performance quality of the wheel-side reducer is improved.

[0055] In one embodiment, it is determined whether the vehicle-mounted equipment corresponding to the quality parameter meets the safety performance condition, and a first determination result is generated, such as Figure 2 As shown, including:

[0056] Step S1042: Acquire actual vehicle load spectrum data in the mining area;

[0057] Step S1044: performing structural strength simulation analysis on the test bench according to the actual vehicle load spectrum data in the mining area, and generating simulation analysis results;

[0058] Step S1046: When the simulation analysis result exceeds the safety factor, determine that the first judgment result is yes, otherwise the first judgment result is no.

[0059] In this embodiment, before testing the sample assembly consisting of the wheel-side reducer and the motor, it is necessary to simulate the test bench through 3D software to ensure the stability of the test bench. By obtaining the load spectrum data of the actual vehicle in the mining area, that is, the torque data under the actual working conditions collected on site, the digital model simulation combined with the 3D software simulation loading test bench is used to perform structural strength analysis to determine whether the parameters of the test sample meet the structural strength requirements, and ensure that the physical structures of the test bench built on the test site meet the safety factor. Only when the results of the simulation analysis meet the safety factor requirements can the test be continued to improve the stability and safety of the test.

[0060] In one embodiment, simulation analysis results are generated, such as Figure 3 As shown, including:

[0061] Step S10442: obtaining limit data under extreme working conditions according to the load spectrum data of actual vehicles in the mining area;

[0062] Step S10444: Calculate the limit data and sample assembly parameters and establish the test loading boundary;

[0063] Step S10446: Perform structural strength simulation analysis on the test bench corresponding to the sample assembly according to the test loading boundary and the simulation model, and generate simulation analysis results.

[0064] In this embodiment, by obtaining the torque data of the actual vehicle in the mining area under the actual collection conditions on site, the limit data under the extreme working conditions are analyzed, and the limit data are the maximum torque of the wheel reducer of the actual vehicle in the mining area during the heavy-load uphill process and the minimum torque of the wheel reducer during the unloaded downhill process, as well as the input speed corresponding to the torque extreme value. The above-mentioned limit data is combined with the rated torque coefficient, and is calculated together with the wheel reducer and motor parameters of the test sample to formulate the test loading boundary, that is, the model simulates the limit value of the actual collection conditions on site, performs digital model simulation loading, generates a simulation model of the test bench, calculates the extreme stress value of the test bench in the simulation model, and calculates the safety factor under the corresponding extreme working conditions according to the digital model. Through simulation analysis, the overall stability of the test bench construction and the test samples during the test is ensured, the damage to the tooling and the occurrence of flying cars are reduced, and the safety of the test is improved.

[0065] Among them, by analyzing the different torques under the conditions of vehicle speed, slope, load and other conditions under the actual collection working conditions in the mining area, the torque data under extreme working conditions are obtained. For example, the corresponding extreme torque data is obtained by analyzing the heavy-loaded uphill, heavy-loaded downhill, unloaded uphill and unloaded downhill of the actual vehicles in the mining area.

[0066] In one embodiment, the test bench is controlled by a variable frequency drive and a vehicle controller, the variable frequency drive, the motor and the variable frequency motor are electrically connected, and the vehicle controller and the variable frequency drive, the sample assembly and the torque meter are electrically connected; at least one fault parameter corresponding to the sample assembly is determined, such as Figure 4 As shown, including:

[0067] Step S1062: Determine the vehicle controller's power-on request for the variable frequency motor;

[0068] Step S1064: the vehicle controller sets a set value for the motor parameter corresponding to the sample assembly;

[0069] Step S1066: When at least one quality parameter is greater than a set value, the quality parameter is determined to be a fault parameter.

[0070] In this embodiment, the test bench is controlled by the variable frequency drive and the vehicle controller, that is, the ABB variable-frequency drive and the VCU (vehicle control unit) controller, and the control strategy technology of the wheel-side reducer durability test bench is built by the ABB variable-frequency drive and the VCU controller. The motor in the sample assembly is powered on and off by the VCU controller, and the VCU controller sends a torque request instruction to the torque meter, thereby controlling the test torque in the sample assembly and determining the test conditions. The VCU controller can also monitor and autonomously determine the feedback data of the sample assembly, and control the VCU controller to set the set values ​​corresponding to the motor and wheel-side reducer in the sample assembly through the gear vibration online measurement autonomous determination system. After completing the power-on request for the variable frequency motor in the test bench, the VCU controller monitors the wheel-side reducer and motor parameters in the sample assembly through internal sensors. When the wheel-side reducer and motor parameters are greater than the set values ​​under the test conditions, the sample assembly fails under the test conditions. The motor parameters greater than the set values ​​are fault parameters. The corresponding test torque can be analyzed through the fault parameters to complete multi-dimensional and multi-physical quantity monitoring and improve the scalability of the test.

[0071] Among them, the VCU controller and ABB frequency converter are used for coordinated linkage control, and the control strategy technology of the wheel-side reducer durability test bench is built to form an autonomous online measurement and judgment system for gear vibration. The ABB frequency converter and VCU controller are connected in series through the communication bus, and the multi-dimensional and multi-physical quantities such as sample temperature are fed back in real time for analysis through sensors in the VCU controller.

[0072] In one embodiment, when it is determined that a fault parameter exists, the sample assembly is controlled to stop suddenly, and the fault parameter and the quality parameter corresponding to the fault parameter are recorded, such as Figure 5 As shown, including:

[0073] Step S1102: When the vehicle controller detects that at least one quality parameter is greater than a set value, it is determined that the sample assembly fails;

[0074] Step S1104: the vehicle controller sends an emergency stop command to the variable frequency drive;

[0075] Step S1106: the variable frequency drive controls the variable frequency motor to stop urgently, and drives the sample assembly to stop urgently;

[0076] Step S1108: The vehicle controller obtains fault parameters;

[0077] Step S1110: Acquire a quality parameter corresponding to the fault parameter and a torque meter parameter corresponding to the quality parameter.

[0078] In this embodiment, the VCU controller makes a fault diagnosis corresponding to the sample assembly. When at least one motor parameter is greater than a set value, an emergency stop control command is issued to the ABB inverter. The ABB inverter issues an emergency stop command to the variable frequency motor. After the variable frequency motor stops suddenly, it drives the motor in the sample assembly to stop suddenly. By obtaining the motor parameters that trigger the fault diagnosis and the corresponding torque meter parameters, the test torque conditions under which the fault occurs and the motor fault parameters under the torque conditions can be obtained. Through the joint control of the ABB inverter and the VCU controller, the sample assembly is loaded with the actual limit torque working condition, and the fault parameters under extreme and harsh working conditions are simulated, so as to improve the structural dimensions and sample parameters of the sample according to the fault parameter analysis, and improve the performance and quality of the wheel-side reducer.

[0079] Through the ABB inverter and VCU controller to carry out joint control, such as Fig.11As shown in the figure, the control strategy technology for building a wheel-side reducer durability test bench is used to control the power-on request, power-off request and torque request command of the sample motor through the VCU controller, and complete the power-on, power-off and torque change of the motor in the sample assembly to achieve the purpose of simulating extreme working conditions. The motor parameters in the sample are monitored through the sensors in the VCU controller, and the feedback data is independently determined to identify sudden faults and control diagnosis. When at least one of the motor parameters such as the inverter voltage is greater than the set value, the motor power is greater than the set value, the motor speed is greater than the set value, and the motor temperature is greater than the set value is triggered, the VCU controller determines that the sample assembly has a fault under the current torque, and controls the variable frequency motor and the sample motor to stop urgently through the series-connected ABB inverter, and records the corresponding fault parameters for later iterative design to improve the sample structure size and parameters.

[0080] It can be understood that by connecting the inverter and the controller in series through the communication bus, the gear vibration online measurement and autonomous judgment system is acted on, and the test bench is monitored and evaluated for multi-dimensional and multi-physical quantities such as real-time feedback analysis of sample temperature to improve test stability and safety.

[0081] In one embodiment, when the first judgment result is no, the quality parameter is adjusted, such as Figure 6 As shown, specifically including:

[0082] Step S1082: when the first judgment result is no, obtaining the test loading boundary corresponding to the safety factor;

[0083] Step S1084: adjusting the quality parameters according to the adjustment range corresponding to the test loading boundary.

[0084] In this embodiment, when the first judgment result is no, it means that the test bench formed by the sample assembly does not meet the safety factor requirements, and the physical structure stability of the test bench needs to be improved. Researchers can improve the sample structure size and sample parameters by obtaining the ultimate torque and the corresponding extreme stress value, perform product iteration and upgrade, and conduct the next test.

[0085] like Figure 7 As shown, the present application provides a wheel-side reducer control device 900, which is used for a test bench. The test bench includes vehicle supporting equipment, a sample assembly, a variable frequency motor and a torque meter. The sample assembly includes a motor and a wheel-side reducer. The sample assembly is connected to one end of the torque meter, and the other end of the torque meter is connected to the variable frequency motor. The wheel-side reducer control device 900 controls the sample assembly through the variable frequency motor and includes:

[0086] An acquisition module 902 is used to acquire mass parameters corresponding to the sample assembly and load spectrum data of a real vehicle in a mining area;

[0087] A judgment module 906 is used to judge whether the test bench corresponding to the sample assembly meets the safety performance conditions and generate a first judgment result;

[0088] The analysis module 908 is used to determine at least one fault parameter corresponding to the sample assembly when the first judgment result is yes, and the fault parameter includes at least one of the inverter voltage, motor power, motor speed and motor temperature on the sample assembly.

[0089] Optionally, the acquisition module 902 may also be used to acquire a quality parameter corresponding to the fault parameter and a torque meter parameter corresponding to the quality parameter.

[0090] Optionally, the acquisition module 902 may also be used to acquire a test loading boundary corresponding to the safety factor when the first judgment result is no.

[0091] Optionally, the analysis module 908 may also be used to perform a structural strength simulation analysis on a test bench corresponding to the sample assembly according to the test loading boundary in combination with the simulation model, and generate a simulation analysis result.

[0092] In this embodiment, the torque data under the actual on-site collection working conditions and the performance parameters and dimensional parameters of the wheel-side reducer and the motor in the sample assembly are obtained through the acquisition module 902; the judgment module 906 judges whether the extreme stress value of the physical structure of the test bench meets the safety factor, thereby ensuring the stability of the test bench, reducing the probability of runaway and tooling damage, and improving the safety during the test; the analysis module 908 analyzes the fault parameters corresponding to the limit torque of the sample assembly under simulated harsh working conditions, which are used to improve the structural dimensions and performance parameters of the sample.

[0093] In the embodiment of the present application, a test bench 4002 is provided, such as Fig. 9As shown, the test bench 4002 includes vehicle supporting equipment 4004, a sample assembly 4006, a variable frequency motor 4022 and a torque meter 4020. The sample assembly 4006 includes a motor 4016 and a wheel-side reducer 4018. The sample assembly 4006 is connected to one end of the torque meter 4020, and the other end of the torque meter 4020 is connected to the variable frequency motor 4022. The sample assembly 4006 is controlled by the variable frequency motor 4022; the vehicle supporting equipment includes a resistor grid 4008, a cooling system 4010, a variable frequency cabinet 4014 and a fan 4012; the variable frequency Motor 4022 is used to drive sample assembly 4006, and frequency conversion motor 4022 also includes a reducer; the sample assembly includes a first sample assembly and a second sample assembly, the motor 4016 in the first sample assembly is powered on and running, and the second sample assembly reduces speed and increases torque of the first sample assembly through the reducer; the first sample assembly and the second sample assembly are connected through a flange; the flange includes a first flange and a second flange, and the first flange and the second flange are connected by a resin pin; as provided in a wheel reducer control device 900 in an embodiment of the third aspect.

[0094] In this embodiment, the vehicle supporting equipment 4004 includes a resistor grid 4008, a cooling system 4010, a frequency conversion cabinet 4014 and a fan 4012, etc., which are built as a whole at the test site to reduce the test cost. Two sets of motors 4016 and wheel-side reducers 4018 form a sample assembly 4006, one of which is a motor 4016 assembly with a point operation, as the first sample assembly; the other set of assemblies plays a role of deceleration and torque increase, as the second sample assembly. The vehicle controller 4024 monitors and evaluates the sample assembly 4006. The two sets of sample assemblies are connected in the middle with a customized flange, and the left and right flanges are connected with resin pins. The reducer cooperates with the second sample assembly to decelerate and increase torque. The variable frequency driver 4026 controls the variable frequency motor 4022 to drive the motor 4016 in the first sample assembly to power on and change frequency. The left and right flanges are connected by resin pin connection to improve structural strength, reduce the time for single-side disassembly inspection of the sample assembly, save test time, and improve test efficiency.

[0095] The left and right flanges are connected by resin pins, and a 5mm gap is left between the two flanges.

[0096] Optionally, the test bench structure diagram is as follows Figure 8 As shown, the vehicle supporting equipment including the resistance grid, cooling system, frequency converter and fan are connected to the first sample assembly after being built as a whole at the test site, and the frequency converter motor is connected to the first sample assembly to drive the motor in the first sample assembly to operate.

[0097] Optionally, two sets of variable frequency motors can be used to replace one set of sample assemblies, which also has the effect of reducing speed and increasing torque on the first sample assembly.

[0098] An embodiment of the present application provides a readable storage medium, on which programs or instructions are stored. When the programs or instructions are executed by a processor, the various processes of the wheel-side reducer control method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, they will not be repeated here.

[0099] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement various processes of the embodiment of the wheel-side reducer control method, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0100] According to the wheel-side reducer control method, device, test bench, readable storage device and chip provided by the present invention, through the wheel-side reducer control method proposed in the present invention, the test of the performance and durability of the wheel-side reducer under extreme working conditions can be directly simulated in the laboratory, reducing the test cost and test time, improving the test efficiency and the stability and safety during the test, and through the ABB inverter and VCU controller for coordinated linkage control, the sample can be monitored and evaluated in multiple dimensions and multiple physical quantities, thereby improving the scalability of the test method.

[0101] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0102] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0103] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0104] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wheel reducer control method, characterized in that: Used for a test bench, the test bench includes vehicle supporting equipment, a sample assembly, a variable frequency motor and a torque meter, the sample assembly includes a motor and a wheel-side reducer, the sample assembly is connected to one end of the torque meter, and the other end of the torque meter is connected to the variable frequency motor, the sample assembly is controlled by the variable frequency motor, and the wheel-side reducer control method includes: Acquire quality parameters corresponding to the sample assembly, wherein the quality parameters include motor parameters and wheel reducer parameters; Determine whether the test bench corresponding to the sample assembly meets the safety performance conditions, and generate a first determination result; When the first judgment result is yes, determining at least one fault parameter corresponding to the sample assembly, the fault parameter comprising at least one of an inverter voltage, a motor power, a motor speed, and a motor temperature on the sample assembly; When the first judgment result is no, adjusting the quality parameter; When it is determined that the fault parameter exists, the sample assembly is controlled to stop urgently, and the fault parameter and the quality parameter corresponding to the fault parameter are recorded.

2. The wheel reducer control method according to claim 1, characterized in that: The step of judging whether the test bench corresponding to the sample assembly meets the safety performance condition and generating a first judgment result includes: Obtain actual vehicle load spectrum data in the mining area; According to the actual vehicle load spectrum data in the mining area, a structural strength simulation analysis is performed on the test bench to generate a simulation analysis result; When the simulation analysis result exceeds the safety factor, the first judgment result is determined to be yes, otherwise the first judgment result is no.

3. The wheel reducer control method according to claim 2, characterized in that: The generating of simulation analysis results comprises: According to the actual vehicle load spectrum data in the mining area, the limit data under the extreme working conditions are obtained; Calculating the limit data and sample assembly parameters to establish a test loading boundary; According to the test loading boundary and the simulation model, a structural strength simulation analysis is performed on the test bench corresponding to the sample assembly to generate a simulation analysis result.

4. The wheel reducer control method according to claim 1, characterized in that: The test bench is controlled by a variable frequency drive and a vehicle controller, the variable frequency drive, the motor and the variable frequency motor are electrically connected, and the vehicle controller, the variable frequency drive, the sample assembly and the torque meter are electrically connected; The determining of at least one fault parameter corresponding to the sample assembly includes: Determining a power-on request of the vehicle controller for the variable frequency motor; The vehicle controller sets set values ​​for motor parameters corresponding to the sample assembly; When at least one quality parameter is greater than the set value, the quality parameter is determined to be a fault parameter, and the quality parameters include inverter voltage, motor power, motor speed and motor temperature.

5. The wheel reducer control method according to claim 4, characterized in that: When it is determined that the fault parameter exists, controlling the sample assembly to stop urgently, and recording the fault parameter and the quality parameter corresponding to the fault parameter, comprises: When the vehicle controller detects that at least one of the quality parameters is greater than the set value, it is determined that the sample assembly fails; The vehicle controller sends an emergency stop command to the variable frequency drive; The variable frequency driver controls the variable frequency motor to stop suddenly, and drives the sample assembly to stop suddenly; The vehicle controller obtains the fault parameter; A quality parameter corresponding to the fault parameter and a torque meter parameter corresponding to the quality parameter are acquired.

6. The wheel reducer control method according to any one of claims 1 to 5, characterized in that: When the first judgment result is no, adjusting the quality parameter specifically includes: When the first judgment result is no, obtaining a test loading boundary corresponding to the safety factor; The quality parameter is adjusted according to the adjustment amplitude corresponding to the test loading boundary.

7. A wheel reducer control device, characterized in that: Used for a test bench, the test bench includes vehicle supporting equipment, a sample assembly, a variable frequency motor and a torque meter, the sample assembly includes a motor and a wheel-side reducer, the sample assembly is connected to one end of the torque meter, and the other end of the torque meter is connected to the variable frequency motor, the sample assembly is controlled by the variable frequency motor, and the wheel-side reducer control device includes: An acquisition module, used to acquire mass parameters corresponding to the sample assembly and load spectrum data of actual vehicles in the mining area; A judgment module, used to judge whether the test bench corresponding to the sample assembly meets the safety performance conditions and generate a first judgment result; The analysis module is used to determine at least one fault parameter corresponding to the sample assembly when the first judgment result is yes, and the fault parameter includes at least one of the inverter voltage, motor power, motor speed and motor temperature on the sample assembly.

8. A test bench, characterized in that: include: Complete vehicle supporting equipment, sample assembly, variable frequency motor and torque meter, the sample assembly includes a motor and a wheel-side reducer, the sample assembly is connected to one end of the torque meter, the other end of the torque meter is connected to the variable frequency motor, and the sample assembly is controlled by the variable frequency motor; The variable frequency motor is used to drive the sample assembly, and the variable frequency motor also includes a reducer; The sample assembly includes a first sample assembly and a second sample assembly, the motor in the first sample assembly is powered on and runs, and the second sample assembly reduces speed and increases torque of the first sample assembly through the reducer; The first sample assembly and the second sample assembly are connected via a flange; The flange comprises a first flange and a second flange, and the first flange and the second flange are connected by a resin pin; A wheel reducer control device as described in claim 7.

9. A readable storage medium, characterized in that: The readable storage medium stores programs or instructions, and when the programs or instructions are executed by the processor, the steps of the wheel-side reducer control method as described in any one of claims 1 to 6 are implemented.

10. A chip, characterized in that: The chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the wheel-side reducer control method as described in any one of claims 1 to 6.

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